[go: up one dir, main page]

WO1996014947A1 - Solid lubricant and method for its preparation - Google Patents

Solid lubricant and method for its preparation Download PDF

Info

Publication number
WO1996014947A1
WO1996014947A1 PCT/EP1994/003739 EP9403739W WO9614947A1 WO 1996014947 A1 WO1996014947 A1 WO 1996014947A1 EP 9403739 W EP9403739 W EP 9403739W WO 9614947 A1 WO9614947 A1 WO 9614947A1
Authority
WO
WIPO (PCT)
Prior art keywords
solid lubricant
lubricant according
shaped bodies
solid
lubricant
Prior art date
Application number
PCT/EP1994/003739
Other languages
German (de)
French (fr)
Inventor
Harri Weinhold
Bernhard Kurze
Gerd Zschorn
Armin HÜBNER
Original Assignee
Ecoform Umformtechnik Gmbh
Sket Drahtziehmaschinenwerk Grüna Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ecoform Umformtechnik Gmbh, Sket Drahtziehmaschinenwerk Grüna Gmbh filed Critical Ecoform Umformtechnik Gmbh
Priority to PCT/EP1994/003739 priority Critical patent/WO1996014947A1/en
Priority to AU10645/95A priority patent/AU1064595A/en
Publication of WO1996014947A1 publication Critical patent/WO1996014947A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M105/00—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound
    • C10M105/08—Lubricating compositions characterised by the base-material being a non-macromolecular organic compound containing oxygen
    • C10M105/22—Carboxylic acids or their salts
    • C10M105/24—Carboxylic acids or their salts having only one carboxyl group bound to an acyclic carbon atom, cycloaliphatic carbon atom or hydrogen
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C23/00—Extruding metal; Impact extrusion
    • B21C23/32—Lubrication of metal being extruded or of dies, or the like, e.g. physical state of lubricant, location where lubricant is applied
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES, PROFILES OR LIKE SEMI-MANUFACTURED PRODUCTS OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C9/00—Cooling, heating or lubricating drawing material
    • B21C9/02—Selection of compositions therefor
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/085—Phosphorus oxides, acids or salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
    • C10M2201/087—Boron oxides, acids or salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/125—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of eight up to twenty-nine carbon atoms, i.e. fatty acids
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
    • C10M2207/10—Carboxylix acids; Neutral salts thereof
    • C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
    • C10M2207/129—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of thirty or more carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/04—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an alcohol or ester thereof; bound to an aldehyde, ketonic, ether, ketal or acetal radical
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/06—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an acyloxy radical of saturated carboxylic or carbonic acid
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
    • C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • C10M2209/06—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an acyloxy radical of saturated carboxylic or carbonic acid
    • C10M2209/062—Vinyl esters of saturated carboxylic or carbonic acids, e.g. vinyl acetate
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
    • C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
    • C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
    • C10M2219/044—Sulfonic acids, Derivatives thereof, e.g. neutral salts
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/02—Groups 1 or 11
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2010/00—Metal present as such or in compounds
    • C10N2010/04—Groups 2 or 12
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/24—Metal working without essential removal of material, e.g. forming, gorging, drawing, pressing, stamping, rolling or extruding; Punching metal
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/241—Manufacturing joint-less pipes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/242—Hot working
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/243—Cold working
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/245—Soft metals, e.g. aluminum
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/246—Iron or steel
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
    • C10N2040/00—Specified use or application for which the lubricating composition is intended
    • C10N2040/20—Metal working
    • C10N2040/244—Metal working of specific metals
    • C10N2040/247—Stainless steel

Definitions

  • the invention relates to the field of drawing extruded material, in particular the drawing of wire, rods and tubes, and to the field of lubricants for such drawing processes.
  • the invention relates to solid lubricants which can be applied to extruded metal for drawing in order to enable or facilitate drawing, and to a method for their production.
  • a lubricant applied to the material to be formed prior to the forming is necessary for the drawing of extruded metal.
  • Such lubricants can be classified according to their physical state, among other things. A distinction is made between solid lubricants, paste-like and liquid lubricants. In the group of solid lubricants, a distinction is made between those used in powder form (Bartz, W. Bleche Rohr, Profile 27 (1980) 1, pp. 36 - 41) and those that consist of a liquid lubricant on the material to be formed in For of a solid lubricant film.
  • Solid lubricants in powder form are regularly applied during wire drawing by running the wire in front of the forming tool through a box filled with a lubricant powder (US Pat. No. 3,763,680).
  • a lubricant powder US Pat. No. 3,763,680
  • the lubricant powder accumulates on the surface of the wire and is at least partially transported to the forming tool.
  • the wire usually has to be surface-treated beforehand, which is very expensive.
  • a major further disadvantage of this method is that the use of the known lubricant powder mi is associated with a considerable health and environmental damage lubricant dust development.
  • liquid lubricants are used which contain solid lubricants in dissolved and / or emulsified and / or dispersed form (EP 0 301 120; DE 2 920 857).
  • the strand-like metal material is then immersed in this liquid lubricant or i Continuous process.
  • the lubricant present on the surface of the material to be formed must then be dried as a wet coating before the material to be formed can be subjected to the drawing process. This is usually done by a subsequent exposure to heat or also by heating the material to be formed before coating, so that the wet film dries on the surface of the material to be formed.
  • This method avoids the generation of lubricant dust, but its decisive disadvantage is that it is very complex and requires a relatively large amount of space and time for drying.
  • the object of the invention is to largely avoid the formation of dust when coating with solid lubricants for drawing and / or when drawing extruded metallic material, while at the same time substantially reducing the effort required to achieve high-performance solid lubricant films.
  • the solid lubricant according to the invention for drawing extruded material is characterized by the fact that one or more solid substances which can be used as lubricants for drawing processes are processed to form shaped bodies, each batch of shaped bodies consisting of shaped bodies having the same or mutually different geometry and / or size and avoidance of dust-forming fractions.
  • the solid lubricant is advantageously characterized in that the surface of the moldings is solidified or covered with a protective layer to prevent or reduce the occurrence of abrasion or breakage.
  • the solid lubricant is advantageously characterized in that the shaped bodies are coated or impregnated with a hydrophobic substance or with a non-hygroscopic or only slightly hygroscopic substance.
  • the solid lubricant is also advantageously characterized in that the shaped bodies are designed as a compact, pellet, as granulate particles or spherically.
  • the solid lubricant is characterized in that the lubricants are salts of the fatty acids, in particular calcium stearate, which are mixed with calcium oxide, lithium stearate and / or ⁇ . It is also advantageous that the solid lubricant is characterized in that the moldings contain one or more additives in addition to the lubricant.
  • the solid lubricant is characterized in that the moldings contain, as additives, corrosion inhibitors, high-pressure stabilizers, film formers, borates, dyes and / or odorants.
  • the solid lubricant is characterized in that polyvinyl alcohol is used as the film former.
  • the solid lubricant is characterized in that sodium tetraborate is used as the borate.
  • the molded bodies are produced by shaping processes, such as pressing powder into pellets, granulating, briquetting or assembling, while avoiding the formation of dust-forming fractions.
  • the essence of the invention is not changed if, after the manufacturing process during transport or storage or when using the moldings in the coating and drawing process, under unfavorable external conditions, dust-forming fractions should occur.
  • the moldings require a smaller storage and transport volume than the known powdered lubricants.
  • a flat matrix is used to produce pellets with a diameter of 1 cm and a height of 2 cm from a powder mixture consisting of 50% by weight calcium stearate, 40% by weight sodium tetraborate and 10% by weight polyvinyl alcohol.
  • pellets can then be used, for example, for drawing and / or for coating steel wire of quality D9, by pulling the steel wire through a chamber into which the pelletized solid lubricant is pressed by means of a lubricant feed adapted to the pellet geometry.
  • a powder mixture consisting of 45% by mass of calcium stearate, 13.5% by mass of lithium stearate, 36.5% by mass of polyphosphate and 5% by mass of alkylarylsylfonate is prepared using the known extrudates. Press granulation with a horizontal disc die into granules with a granule diameter of 3 mm and a length of 6 mm.
  • These granules can then be used, for example, for drawing and / or for coating stainless steel wire by pulling the stainless steel wire through a chamber into which the granulated solid lubricant is pressed from a funnel-shaped reservoir by means of a lubricant supply.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Emergency Medicine (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Metal Extraction Processes (AREA)

Abstract

The invention concerns the field of the extrusion of rod-like shaping material and the field of lubricants therefor. The solid lubricant according to the invention can be applied to the shaping material in order to render possible or facilitate extrusion. The solid lubricant is characterized in that one or a plurality of solid substances used as lubricant for extrusion processes is processed so as to form shaped bodies. Each batch of shaped bodies consists of shaped bodies having the same or different geometry and/or size, so as to avoid dust-producing fractions. The surfaces of the shaped bodies can be hardened or coated with a protective layer in order to prevent or reduce wear or fracturing. The shaped bodies can also be coated or impregnated with a hydrophobic substance or a non-hygroscopic or only slightly hygroscopic substance. During production, the shaped bodies are manufactured, in a manner such that dust-producing fractions are avoided, by shaping processes, such as powder compaction to form pellets, granulates, briquettes or fabricated parts.

Description

FESTSCHMIERSTOFF UND VERFAHREN ZU DESSEN HERSTELLUNGSOLID LUBRICANT AND METHOD FOR THE PRODUCTION THEREOF
TECHNISCHES GEBIETTECHNICAL AREA
Die Erfindung bezieht sich auf das Gebiet des Ziehens von strang¬ formigem Umformgut, insbesondere des Ziehens von Draht, Stangen und Rohren, und auf das Gebiet der Schmierstoffe für derartige Ziehprozesse. Die Erfindung betrifft FestSchmierstoffe, die auf strangförmiges metallisches Umformgut für das Ziehen aufgebracht werden können, um das Ziehen zu ermöglichen oder zu erleichtern, sowie ein Verfahren zu deren Herstellung.The invention relates to the field of drawing extruded material, in particular the drawing of wire, rods and tubes, and to the field of lubricants for such drawing processes. The invention relates to solid lubricants which can be applied to extruded metal for drawing in order to enable or facilitate drawing, and to a method for their production.
STAND DER TECHNIKSTATE OF THE ART
Für das Ziehen von strangformigem metallischem Umformgut ist das Vorhandensein eines vor der Umformung auf das Umformgut aufge¬ brachten Schmierstoffes notwendig. Derartige Schmierstoffe können unter anderem nach ihrem Aggregatzustand eingeordnet werden. Dabei unterscheidet man zwischen FestSchmierstoffen, pastenarti¬ gen und flüssigen Schmierstoffen. In der Gruppe der FestSchmierstoffe unterscheidet man im wesent lichen zwischen den in Pulverform eingesetzten (Bartz, W. Bleche Rohre, Profile 27 (1980) 1, S. 36 - 41) und solchen, die au einem flüssigen Schmiermittel heraus auf dem Umformgut in For eines Festschmierstoffilms abgeschieden werden.The presence of a lubricant applied to the material to be formed prior to the forming is necessary for the drawing of extruded metal. Such lubricants can be classified according to their physical state, among other things. A distinction is made between solid lubricants, paste-like and liquid lubricants. In the group of solid lubricants, a distinction is made between those used in powder form (Bartz, W. Bleche Rohr, Profile 27 (1980) 1, pp. 36 - 41) and those that consist of a liquid lubricant on the material to be formed in For of a solid lubricant film.
Festschmierstoffe in Pulverform werden beim Drahtziehen regelmä ßig dadurch aufgebracht, daß der Draht vor dem Umformwerkzeu durch einen Kasten läuft, der mit einem Schmierstoffpulver ge füllt ist (US 3 763 680) . Hierbei lagert sich das Schmierstoff pulver an der Oberfläche des Drahtes an und wird so zumindes teilweise mit in das Umformwerkzeug transportiert. Zur Verbesse rung der Haftung des Schmierstoffpulvers auf der Drahtoberfläch und zur Erzielung ausreichender Schmierbedingungen muß der Drah vorher meist noch oberflächenbehandelt werden, was sehr aufwendi ist.Solid lubricants in powder form are regularly applied during wire drawing by running the wire in front of the forming tool through a box filled with a lubricant powder (US Pat. No. 3,763,680). Here, the lubricant powder accumulates on the surface of the wire and is at least partially transported to the forming tool. To improve the adhesion of the lubricant powder to the wire surface and to achieve sufficient lubrication conditions, the wire usually has to be surface-treated beforehand, which is very expensive.
Ein wesentlicher weiterer Nachteil diese Verfahrens besteh darin, daß die Anwendung der bekannten Schmierstoffpulver mi einer erheblichen gesundheits- und umweitschädigenden Schmier stoffStaubentwicklung verbunden ist.A major further disadvantage of this method is that the use of the known lubricant powder mi is associated with a considerable health and environmental damage lubricant dust development.
Für das Erzeugen der bekannten Festschmierstoffilme wird vo flüssigen Schmiermittel ausgegangen, die Festschmierstoffe gelös und/oder emulgiert und/oder dispergiert enthalten (EP 0 301 120; DE 2 920 857) . Das strangförmige metallische Umformgut wird dan in dieses flüssiges Schmiermittel getaucht oder durch dieses i Durchlaufverfahren hindurchgeführt. Anschließend muß das auf der Umformgutoberfläche als nasser Überzug vorliegende Schmiermittel getrocknet werden, bevor das Umformgut dem Ziehprozeß unterworfen werden kann. Dies geschieht üblicherweise durch eine nachfolgende Wärmeeinwirkung oder auch dadurch, daß das Umformgut vor dem Beschichten erwärmt wird, so daß der nasse Film auf der Oberflä¬ che des Umformgutes trocknet.For the production of the known solid lubricant films, liquid lubricants are used which contain solid lubricants in dissolved and / or emulsified and / or dispersed form (EP 0 301 120; DE 2 920 857). The strand-like metal material is then immersed in this liquid lubricant or i Continuous process. The lubricant present on the surface of the material to be formed must then be dried as a wet coating before the material to be formed can be subjected to the drawing process. This is usually done by a subsequent exposure to heat or also by heating the material to be formed before coating, so that the wet film dries on the surface of the material to be formed.
Bei diesem Verfahren wird zwar eine SchmierstoffStaubentwicklung vermieden, sein entscheidender Nachteil besteht jedoch darin, daß es sehr aufwendig ist und relativ viel Platz und Zeit für die Trocknung benötigt wird.This method avoids the generation of lubricant dust, but its decisive disadvantage is that it is very complex and requires a relatively large amount of space and time for drying.
DARSTELLUNG DER ERFINDUNGPRESENTATION OF THE INVENTION
Die Aufgabe der Erfindung besteht darin, beim Beschichten mit Festschmierstoffen für das Ziehen und/oder beim Ziehen von strangformigem metallischem Umformgut die Entstehung von Staub weitgehend zu vermeiden, bei gleichzeitiger wesentlicher Verring¬ erung des Aufwandes für die Erzielung hochleistungsfähiger Fest¬ schmierstoffilme.The object of the invention is to largely avoid the formation of dust when coating with solid lubricants for drawing and / or when drawing extruded metallic material, while at the same time substantially reducing the effort required to achieve high-performance solid lubricant films.
Die Aufgabe wird durch die in den Ansprüchen angegebene Erfindung gelöst. Der erfindungsgemäße Festschmierstoff für das Ziehen von strang¬ formigem Umformgut, wie Draht, Stangen und Rohren, ist dadurc gekennzeichnet, daß ein oder mehrere als Schmierstoff für Zieh¬ prozesse einsetzbare feste Stoffe zu Formkörpern verarbeitet sind, wobei jede Formkörpercharge aus Formkδrpern mit gleiche oder zueinander unterschiedliche Geometrie und/oder Größe unte Vermeidung staubbildender Fraktionen besteht.The object is achieved by the invention specified in the claims. The solid lubricant according to the invention for drawing extruded material, such as wire, rods and tubes, is characterized by the fact that one or more solid substances which can be used as lubricants for drawing processes are processed to form shaped bodies, each batch of shaped bodies consisting of shaped bodies having the same or mutually different geometry and / or size and avoidance of dust-forming fractions.
Vorteilhafterweise ist der Festschmierstoff dadurch gekennzeich¬ net, daß die Oberfläche der Formkörper zur Verhinderung oder Verminderung des Entstehens von Abrieb oder Bruch verfestigt ode mit einer Schutzschicht überzogen ist.The solid lubricant is advantageously characterized in that the surface of the moldings is solidified or covered with a protective layer to prevent or reduce the occurrence of abrasion or breakage.
Weiterhin vorteilhafterweise ist der Festschmierstoff dadurch gekennzeichnet, daß die Formkörper mit einem hydrophoben Stoff oder mit einem nichthygroskopischen oder nur schwach hygroskopi¬ schem Stoff überzogen oder imprägniert sind.Furthermore, the solid lubricant is advantageously characterized in that the shaped bodies are coated or impregnated with a hydrophobic substance or with a non-hygroscopic or only slightly hygroscopic substance.
Ebenfalls vorteilhafterweise ist der Festschmierstoff dadurch gekennzeichnet, daß die Formkörper als Preßling, Pellet, als Granulatteilchen oder kugelförmig ausgebildet sind.The solid lubricant is also advantageously characterized in that the shaped bodies are designed as a compact, pellet, as granulate particles or spherically.
Vorteilhaft ist auch, daß der Festschmierstoff dadurch gekenn¬ zeichnet ist, daß als Schmierstoffe Salze der Fettsäuren, insbe¬ sondere Calciu stearat, welches mit Calciumoxid vermischt sein ;ann, Lithiumstearat und/oder ^.inkstearat verwendet sind. Es ist auch vorteilhaft, daß der Festschmierstoff dadurch gekenn¬ zeichnet ist, daß die Formkörper neben dem Schmierstoff einen oder mehrere Zusatzstoffe enthalten.It is also advantageous that the solid lubricant is characterized in that the lubricants are salts of the fatty acids, in particular calcium stearate, which are mixed with calcium oxide, lithium stearate and / or ^ . It is also advantageous that the solid lubricant is characterized in that the moldings contain one or more additives in addition to the lubricant.
Und ebenfalls vorteilhaft ist, daß der Festschmierstoff dadurch gekennzeichnet ist, daß die Formkörper als Zusatzstoffe Korrosi¬ onsinhibitoren, Hochdruckstabilisatoren, Filmbildner, Borate, Farbstoffe und/oder Geruchswirkstoffe enthalten.It is also advantageous that the solid lubricant is characterized in that the moldings contain, as additives, corrosion inhibitors, high-pressure stabilizers, film formers, borates, dyes and / or odorants.
Es ist ebenfalls vorteilhaft, daß der Festschmierstoff dadurch gekennzeichnet ist, daß als Filmbildner Polyvinylalkohol verwen¬ det ist.It is also advantageous that the solid lubricant is characterized in that polyvinyl alcohol is used as the film former.
Und vorteilhafterweise ist der Festschmierstoff dadurch gekenn¬ zeichnet, daß als Borat Natriumtetraborat verwendet ist.And advantageously, the solid lubricant is characterized in that sodium tetraborate is used as the borate.
Zur Herstellung des erfindungsgemäßen Festschmierstoffs ist nach der Erfindung vorgesehen, daß die Formkörper unter Vermeidung des Entstehens staubbildender Fraktionen durch Formgebungsverfahren, wie Verpressen von Pulver zu Pellets, Granulieren, Brikettieren oder Konfektionieren erzeugt werden.For the production of the solid lubricant according to the invention it is provided according to the invention that the molded bodies are produced by shaping processes, such as pressing powder into pellets, granulating, briquetting or assembling, while avoiding the formation of dust-forming fractions.
Durch das erfindungsgemäße Verfahren können alle bekannten Fest¬ schmierstoffe, die für das Ziehen strangförmiger metallischer Werkstoffe aufgebracht werden, zu den erfindungsgemäßen Formkör¬ pern verarbeitet werden. Dabei werden an sich bekannte Technolo¬ gien zur z.B. Pelletierung oder Granulierung oder Brikettierung PCΪYEP94/03739With the method according to the invention, all known solid lubricants which are applied for drawing strand-like metallic materials can be processed into the moldings according to the invention. Techniques known per se, for example pelleting or granulation or briquetting, are used PCΪYEP94 / 03739
eingesetzt. Durch diese Technologien entstehen aus den pulverfδr migen Festschmierstoffen Formkörper die gleiche Form und gleich Größe oder gleiche Form und verschiedene Größe oder verschied Formen und gleiche Größe oder verschiedene Formen und verschiede ne Großen haben können. Allen gemeinsam ist, daß sie nach ihre Herstellung keine staubbildenden Fraktionen mehr aufweisen. Dari besteht ein wesentlicher Vorteil der erfindungsgemäßen Lösung, d keine gesundheits- und umweltbelastende SchmierstoffStaubentwick lung mehr auftreten kann.used. Through these technologies, powdered solid lubricants are used to give shaped articles the same shape and size or shape and different size or different shapes and sizes or different shapes and sizes. What they all have in common is that after their production they no longer have any dust-forming fractions. This is a major advantage of the solution according to the invention, in that lubricant dust development which is harmful to health and the environment can no longer occur.
In diesem Zusammenhang gilt, daß das Wesen der Erfindung nich dadurch verändert wird, falls nach dem Herstellungsprozeß währen des Transportes oder der Lagerung oder beim Einsatz de Formkörper im Beschichtungs- und Ziehprozeß unter ungünstige äußeren Bedingungen durch Abrieb und/oder Bruch staubbildend Fraktionen entstehen sollten.In this context, the essence of the invention is not changed if, after the manufacturing process during transport or storage or when using the moldings in the coating and drawing process, under unfavorable external conditions, dust-forming fractions should occur.
Weiterhin ist vorteilhaft, daß die Formkörper ein geringere Lager- und Transportvolumen als die bekannten pulverförmige Schmierstoffe erfordern.It is also advantageous that the moldings require a smaller storage and transport volume than the known powdered lubricants.
Besonders vorteilhaft ist die geringere Empfindlichkeit gege Hygroskopizität. Außerdem werden bei den erfindungsgemäßen Form kδrpern auch Entmischungen z.B. während des Transport verhindert. Schließlich wird die Überführung von Mischungen au Produkten mit unterschiedlicher Teilchengröße, Teilchenform, spezifischem Gewicht, Hygroskopizität in eine stabile Mischun möglich. Im weiteren ist die Erfindung an Ausführungsbeispielen erläutertThe lower sensitivity to hygroscopicity is particularly advantageous. In addition, segregation, for example during transport, is also prevented in the mold according to the invention. Finally, it is possible to convert mixtures of products with different particle size, particle shape, specific weight, hygroscopicity into a stable mixture. The invention is explained below using exemplary embodiments
WEGE ZUR AUSFUHRUNG DER ERFINDUNGWAYS OF CARRYING OUT THE INVENTION
Beispiel 1example 1
Aus einer Pulvermischung, die aus 50 Masse-% Calciumstearat, 40 Masse-% Natriumtetraborat und 10 Masse-% Polyvinylalkohol besteht, werden mit Hilfe des bekannten KollerStrangprinzips mit einer Flachmatrize zu Pellets mit Durchmessern von 1 cm und einer Höhe von 2 cm hergestellt.With the help of the well-known Koller strand principle, a flat matrix is used to produce pellets with a diameter of 1 cm and a height of 2 cm from a powder mixture consisting of 50% by weight calcium stearate, 40% by weight sodium tetraborate and 10% by weight polyvinyl alcohol.
Diese Pellets können dann beispielsweise beim Ziehen und/oder für das Beschichten von Stahldraht der Qualität D9 eingesetzt werden, indem der Stahldraht durch eine Kammer gezogen wird, in die der pelletierte Festschmierstoff mittels einer der Pelletgeometrie angepaßten SchmierstoffZuführung gepreßt wird.These pellets can then be used, for example, for drawing and / or for coating steel wire of quality D9, by pulling the steel wire through a chamber into which the pelletized solid lubricant is pressed by means of a lubricant feed adapted to the pellet geometry.
Dieses Beispiel ist der beste Weg zur Ausführung der Erfindung.This example is the best way to practice the invention.
Beispiel 2Example 2
Eine Pulvermischung, die aus 45 Masse-% Calciumstearat, 13,5 Masse-% Lithiumstearat, 36,5 Masse-% Polyphosphat und 5 Masse-% Alkylarylsylfonat besteht, wird mit Hilfe der bekannten Strang- preßgranulation mit einer horizontalen Scheibenmatrize zu Granu¬ lat mit einem Granulatdurchmessern von 3 mm und einer Länge von 6 mm verarbeitet.A powder mixture consisting of 45% by mass of calcium stearate, 13.5% by mass of lithium stearate, 36.5% by mass of polyphosphate and 5% by mass of alkylarylsylfonate is prepared using the known extrudates. Press granulation with a horizontal disc die into granules with a granule diameter of 3 mm and a length of 6 mm.
Dieses Granulat kann dann beispielsweise beim Ziehen und/oder für das Beschichten von Edelstahldraht eingesetzt werden, indem der Edelstahldraht durch eine Kammer gezogen wird, in die der granu¬ lierte Festschmierstoff mittels einer SchmierstoffZuführung aus einem trichterförmigen Vorratsbehälter gepreßt wird. These granules can then be used, for example, for drawing and / or for coating stainless steel wire by pulling the stainless steel wire through a chamber into which the granulated solid lubricant is pressed from a funnel-shaped reservoir by means of a lubricant supply.

Claims

PATENTANSPRUCHE PATENT CLAIMS
1. Festschmierstoff für das Ziehen von strangformigem Umformgut, wie Draht, Stangen und Rohren, dadurch gekennzeichnet, daß ein oder mehrere als Schmierstoff für Ziehprozesse einsetzbare feste Stoffe zu Formkörpern verarbeitet sind, wobei jede Formkörper¬ charge aus Formkörpern mit gleicher oder zueinander unterschied¬ liche Geometrie und/oder Größe unter Vermeidung staubbildender Fraktionen besteht.1. Solid lubricant for drawing extruded material, such as wire, rods and tubes, characterized in that one or more solid substances which can be used as lubricants for drawing processes are processed to give shaped articles, each shaped article batch consisting of shaped articles having the same or different from one another There is geometry and / or size while avoiding dust-forming fractions.
2. Festschmierstoff nach Anspruch 1, dadurch gekennzeichnet, daß die Oberfläche der Formkδrper zur Verhinderung oder Verminderung des Entstehens von Abrieb oder Bruch verfestigt oder mit einer Schutzschicht überzogen ist.2. Solid lubricant according to claim 1, characterized in that the surface of the molded body is solidified to prevent or reduce the occurrence of abrasion or breakage or is coated with a protective layer.
3. Festschmierstoff nach Anspruch 1, dadurch gekennzeichnet, daß die Formkörper mit einem hydrophoben Stoff oder mit einem nicht¬ hygroskopischen oder nur schwach hygroskopischem Stoff überzogen oder imprägniert sind.3. Solid lubricant according to claim 1, characterized in that the moldings are coated or impregnated with a hydrophobic substance or with a non-hygroscopic or only slightly hygroscopic substance.
4. Festschmierstoff nach Anspruch 1, dadurch gekennzeichnet, daß die Formkδrper als Pellet, als Granulatteilchen oder kugelförmig ausgebildet sind.4. Solid lubricant according to claim 1, characterized in that the shaped bodies are designed as a pellet, as granules or spherical.
5. Festschmierstoff nach Anspruch 1, dadurch gekennzeichnet, daß als Schmierstoffe Salze der Fettsäuren, insbesondere Calciumstea- rat, welches mit Calciumoxid vermischt sein kann, Lithiumstearat und/oder Zinkstearat verwendet sind.5. Solid lubricant according to claim 1, characterized in that as lubricants salts of the fatty acids, especially calcium stea Rat, which can be mixed with calcium oxide, lithium stearate and / or zinc stearate are used.
6. Festschmierstoff nach Anspruch 1, dadurch gekennzeichnet, daß die Formkδrper neben dem Schmierstoff einen oder mehrere Zusatz¬ stoffe enthalten.6. Solid lubricant according to claim 1, characterized in that the moldings contain one or more additives in addition to the lubricant.
7. Festschmierstoff nach Anspruch 6, dadurch gekennzeichnet, daß die Formkδrper als Zusatzstoffe Korrosionsinhibitoren, Hochdruck¬ stabilisatoren, Filmbildner, Borate, Farbstoffe und/oder Geruchs¬ wirkstoffe enthalten.7. Solid lubricant according to claim 6, characterized in that the moldings contain as additives corrosion inhibitors, high pressure stabilizers, film formers, borates, dyes and / or odorants.
8. Festschmierstoff nach Anspruch 7, dadurch gekennzeichnet, daß als Filmbildner Polyvinylalkohol verwendet ist.8. Solid lubricant according to claim 7, characterized in that polyvinyl alcohol is used as the film former.
9. Festschmierstoff nach Anspruch 7, dadurch gekennzeichnet, daß als Borat Natriumtetraborat verwendet ist.9. Solid lubricant according to claim 7, characterized in that sodium tetraborate is used as borate.
10. Verfahren zur Herstellung von Festschmierstoff nach Anspruch 1, dadurch gekennzeichnet, daß die Formkörper unter Vermeidung des Entstehens staubbildender Fraktionen durch Formgebungsverfah¬ ren, wie Verpressen von Pulver zu Pellets, Granulieren, Briket¬ tieren oder Konfektionieren erzeugt werden. 10. A process for the production of solid lubricant according to claim 1, characterized in that the shaped bodies are produced by avoiding the formation of dust-forming fractions by shaping processes, such as pressing powder into pellets, granulating, briquetting or finishing.
PCT/EP1994/003739 1994-11-11 1994-11-11 Solid lubricant and method for its preparation WO1996014947A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/EP1994/003739 WO1996014947A1 (en) 1994-11-11 1994-11-11 Solid lubricant and method for its preparation
AU10645/95A AU1064595A (en) 1994-11-11 1994-11-11 Solid lubricant and method for its preparation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1994/003739 WO1996014947A1 (en) 1994-11-11 1994-11-11 Solid lubricant and method for its preparation

Publications (1)

Publication Number Publication Date
WO1996014947A1 true WO1996014947A1 (en) 1996-05-23

Family

ID=8165911

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1994/003739 WO1996014947A1 (en) 1994-11-11 1994-11-11 Solid lubricant and method for its preparation

Country Status (2)

Country Link
AU (1) AU1064595A (en)
WO (1) WO1996014947A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1093510A4 (en) * 1998-06-09 2002-06-05 Henkel Corp Composition and process for lubricated plastic working of metals
US6455476B1 (en) 1998-06-09 2002-09-24 Henkel Corporation Composition and process for lubricated plastic working of metals
US8541350B2 (en) 2007-11-16 2013-09-24 Henkel Ag & Co. Kgaa Dry-film, anti-corrosive cold forming lubricant

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63213595A (en) * 1987-03-03 1988-09-06 Shoji Nogami Lubricant containing sericite subjected to hydrophobic treatment
EP0571815A2 (en) * 1992-05-26 1993-12-01 Elf Atochem North America, Inc. Dry wire drawing lubricants

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63213595A (en) * 1987-03-03 1988-09-06 Shoji Nogami Lubricant containing sericite subjected to hydrophobic treatment
EP0571815A2 (en) * 1992-05-26 1993-12-01 Elf Atochem North America, Inc. Dry wire drawing lubricants

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 12, no. 501 (C - 556) 27 December 1988 (1988-12-27) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1093510A4 (en) * 1998-06-09 2002-06-05 Henkel Corp Composition and process for lubricated plastic working of metals
US6455476B1 (en) 1998-06-09 2002-09-24 Henkel Corporation Composition and process for lubricated plastic working of metals
US8541350B2 (en) 2007-11-16 2013-09-24 Henkel Ag & Co. Kgaa Dry-film, anti-corrosive cold forming lubricant

Also Published As

Publication number Publication date
AU1064595A (en) 1996-06-06

Similar Documents

Publication Publication Date Title
DE60221658T2 (en) FLOORED OR STEAMED METAL AGGLOMERATES, PARTS AND PLATES
EP0675770B1 (en) Method and device for applying a lubricant-carrier layer, in particular to material from which wire is to be drawn
WO1995011096B1 (en) Method and device for applying a lubricant-carrier layer, in particular to material from which wire is to be drawn
EP0197586B1 (en) Process and devices for producing glass articles
DE19843887B4 (en) Hygienic granules and process for their production
WO1996014947A1 (en) Solid lubricant and method for its preparation
DE2539674C3 (en) Process for the production of profiles from preferably lignocellulose-containing materials by discontinuous extrusion or continuous extrusion
JP2008189993A (en) Granulated powder for die compaction, its manufacturing method, and method for manufacturing sintered part using the granulated powder
DE2407887A1 (en) PROCESS FOR AGGLOMERATING AND FORMING CARBON MATERIAL
DE3108986C2 (en)
DE2826513A1 (en) CEMENT DUST BRIQUETTES AND THE PROCESS FOR THEIR PRODUCTION
DE2647447C2 (en) Process for the production of bar-shaped cleaning agents
EP0564713A2 (en) Process for solidifying powders containing metal, apparatus for solidifying and obtained solids
DE60206844T2 (en) Method of forming under pressure and element produced thereby
EP2399951B1 (en) Pellets and method for their manufacture
DE60220647T3 (en) ABRASPENT GRANULATE OF AGGLOMERATED MINERAL MATERIAL, POWDER CONTAINING THIS GRANULATE AND METHOD FOR THE PRODUCTION THEREOF
DE2333422A1 (en) HARD MATERIAL AND PROCESS FOR ITS MANUFACTURING
DE1008005B (en) Process for the production of raw materials for sintering
DE2719377C3 (en) Hot melt adhesive body and process for its manufacture
DE69320693T2 (en) Dry wire drawing lubricant
DE1595468C (en) Process for the production of poly tetrafluoroethylene
CH688800A5 (en) A process for producing coarse ceramic clay products and the method made products.
DE1925700C3 (en) Process for the production of non-decrepitating silica gel
AT99087B (en) Compression molding process.
EP1882679B1 (en) Method for granulation of kieserite and mineral fertiliser containing kieserite

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AM AT AU BB BG BR BY CA CH CN CZ DE DK EE ES FI GB GE HU JP KE KG KP KR KZ LK LR LT LU LV MD MG MN MW NL NO NZ PL PT RO RU SD SE SI SK TJ TT UA US UZ VN

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): KE MW SD SZ AT BE CH DE DK ES FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
122 Ep: pct application non-entry in european phase
NENP Non-entry into the national phase

Ref country code: CA