CN113770190B - Method for measuring and adjusting concentricity of extruder - Google Patents
Method for measuring and adjusting concentricity of extruder Download PDFInfo
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- CN113770190B CN113770190B CN202010520467.4A CN202010520467A CN113770190B CN 113770190 B CN113770190 B CN 113770190B CN 202010520467 A CN202010520467 A CN 202010520467A CN 113770190 B CN113770190 B CN 113770190B
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- 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
- B21C23/21—Presses specially adapted for extruding metal
- B21C23/217—Tube extrusion presses
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- 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
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, rods or tubes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention relates to a method for measuring and adjusting concentricity of an extruder, which comprises the following steps: s1, pushing out an extrusion die (6) to a station for replacing the extrusion die; s2, pushing the extrusion cylinder (5) to an extrusion position; s3, taking the front beam (7) as a reference, and aligning the center position of the core rod beam (3) to meet the technical requirement; s4, taking the core rod beam (3) as a reference, and aligning the central position of the extrusion beam (2) to meet the technical requirements; s5, adjusting the center position of the extrusion cylinder (5) to meet the technical requirement by taking the extrusion beam (2) as a reference; s6, pushing the extrusion die (6) to an extrusion position; s7, taking the core rod beam (3) as a reference, and aligning the central position of the extrusion die (6) to meet the technical requirements. The invention has the beneficial effects that: the method can simply and practically measure and adjust the concentricity of the related parts of the extruder, recover the functional precision of equipment and meet the production process requirement.
Description
Technical Field
The invention relates to a method for measuring and repairing the functional precision of extruder equipment in the process of hot extrusion production of steel pipes in the metallurgical industry. By the method, concentricity of relevant parts of the extruder can be conveniently measured, functional precision of extruder equipment can be adjusted and repaired, and requirements of production technology are met.
Background
High-end seamless steel pipes, such as: the seamless steel tube for electric power, the oil well tube for petroleum drilling and the like are produced by adopting forging, reaming, extrusion and other processes, so that the required mechanical properties can be achieved. The 60MN extruder is key process equipment in the hot extrusion production process of the steel pipe, as shown in figure 1, and mainly comprises the following components: the extrusion die comprises a rear beam 1, an extrusion beam 2, a core rod beam 3, a pull rod beam 4, an extrusion barrel 5, an extrusion die 6, a front beam 7 and the like.
Profile of the 60MN extruder process action:
1. the feeding manipulator places the heated steel pipe blank in front of the extrusion cylinder 5;
2. the mandrel beam 3 pushes the extrusion beam 2 to move forwards and pushes the steel pipe blank into the extrusion cylinder;
3. the extrusion beam 2 and the core rod beam 3 exert force simultaneously, and steel pipe blanks are extruded through an extrusion die 6 to form steel pipes;
4. the extrusion beam 2 ejects the extrusion residue in the extrusion barrel 5, and the extrusion beam 2 and the core rod beam 3 are retreated to a preparation station to finish the hot extrusion process of the steel pipe.
With the increase of the production capacity, part of moving parts are worn, the concentricity among the parts such as the extrusion die 6, the extrusion barrel 5, the extrusion beam 2, the core rod beam 3 and the like of the 60MN extruder is increased, the functional precision of equipment is reduced, the requirement of the production process cannot be met, the wall thickness tolerance of the produced steel pipe exceeds the standard, and the quality is not controlled.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention aims to provide a method for measuring and adjusting concentricity of an extruder, which can eliminate the problem of non-concentricity caused by movement abrasion among parts such as an extrusion die, an extrusion cylinder, an extrusion beam, a core rod beam and the like of a steel pipe hot extruder, and can recover the functional precision of equipment and meet the requirements of related production processes by simply and practically measuring and adjusting the concentricity of related parts of the extruder.
The invention is realized by the following technical scheme:
a method for measuring and adjusting concentricity of an extruder, which comprises the following steps:
s1, pushing out an extrusion die to a station for replacing the extrusion die;
s2, pushing the extrusion cylinder to an extrusion position, namely the nearest limit position of the front beam;
s3, using the front beam as a reference, aligning the central position of the core beam, namely using the central position of the front beam as a reference, and aligning the central position of the core beam;
s4, using the core rod beam as a reference, aligning the central position of the extrusion beam, namely using the central position of the core rod beam as a reference, and aligning the central position of the extrusion beam;
s5, using the extrusion beam as a reference, aligning the central position of the extrusion barrel, namely using the central position of the extrusion beam as a reference, and aligning the central position of the extrusion barrel;
s6, pushing the extrusion die to an extrusion position;
and S7, aligning the central position of the extrusion die by taking the core rod beam as a reference, namely aligning the central position of the extrusion die by taking the central position of the core rod beam as a reference.
Preferably, in the step S3, concentricity between the front beam (7) and the mandrel beam (3) is controlled by: not exceeding 0.35mm.
Preferably, in the step S4, concentricity between the mandrel beam (3) and the extrusion beam (2) is controlled by: not exceeding 0.35mm.
Preferably, in the step S5, concentricity between the extrusion beam (2) and the extrusion cylinder (5) is controlled by: not exceeding 0.55mm.
Preferably, in the step S7, concentricity between the mandrel bar (3) and the extrusion die (6) is controlled by: not more than 0.35mm
The invention has the following beneficial effects:
1. the requirements on measuring tools are low, only a caliper is needed, and other auxiliary appliances are not needed to be prepared;
2. the requirements on operators are low, and the calipers are used skillfully;
3. the measuring process is simple;
4. the time required for measurement and adjustment is short, and only 2 days are needed.
Drawings
Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of a steel pipe hot press;
FIG. 2 is a process flow diagram of the present invention;
in the figure: 1. a rear beam; 2. extruding the beam; 3. a mandrel beam; 4. a tie bar beam; 5. an extrusion cylinder; 6. an extrusion die; 7. a front beam.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications could be made by those skilled in the art without departing from the inventive concept. These are all within the scope of the present invention.
Example 1
The embodiment provides a method for measuring and adjusting concentricity of an extruder, as shown in fig. 2, specifically comprising the following steps:
s1, pushing out an extrusion die 6 to a station for replacing the extrusion die;
s2, pushing the extrusion cylinder 5 to an extrusion position, namely a nearest limit position from the front beam;
s3, using the front beam 7 as a reference, aligning the central position of the core beam 3, namely using the central position of the front beam as a reference, aligning the central position of the core beam, and controlling concentricity between the front beam 7 and the core beam 3: no more than 0.25mm;
s4, taking the core rod beam 3 as a reference, aligning the central position of the extrusion beam 2, namely taking the central position of the core rod beam as a reference, aligning the central position of the extrusion beam, and controlling concentricity between the core rod beam 3 and the extrusion beam 2: no more than 0.25mm;
s5, taking the extrusion beam 2 as a reference, aligning the central position of the extrusion barrel 5, namely taking the central position of the extrusion beam as a reference, aligning the central position of the extrusion barrel, and controlling concentricity between the extrusion beam 2 and the extrusion barrel 5: no more than 0.25mm;
s6, pushing the extrusion die 6 to an extrusion position;
s7, taking the mandrel beam 3 as a reference, aligning the central position of the extrusion die 6, namely taking the central position of the mandrel beam as a reference, aligning the central position of the extrusion die, and controlling concentricity between the mandrel beam 3 and the extrusion die 6: no more than 0.25mm.
In the steps, when concentricity between the front beam (7) and the core beam (3), between the core beam (3) and the extrusion beam (2), between the extrusion beam (2) and the extrusion cylinder (5) and between the core beam (3) and the extrusion die (6) is controlled, a measuring tool only needs a caliper, and other auxiliary tools are not needed to be prepared.
Example 2
The embodiment provides a method for measuring and adjusting concentricity of an extruder, which comprises the following steps:
s1, pushing out an extrusion die 6 to a station for replacing the extrusion die;
s2, pushing the extrusion cylinder 5 to an extrusion position, namely a nearest limit position from the front beam;
s3, using the front beam 7 as a reference, aligning the central position of the core beam 3, namely using the central position of the front beam as a reference, aligning the central position of the core beam, and controlling concentricity between the front beam 7 and the core beam 3: no more than 0.35mm;
s4, taking the core rod beam 3 as a reference, aligning the central position of the extrusion beam 2, namely taking the central position of the core rod beam as a reference, aligning the central position of the extrusion beam, and controlling concentricity between the core rod beam 3 and the extrusion beam 2: no more than 0.35mm;
s5, using the extrusion beam 2 as a reference, aligning the central position of the extrusion barrel 5, namely using the central position of the extrusion beam as a reference, and aligning the central position of the extrusion barrel by 0.55mm;
s6, pushing the extrusion die 6 to an extrusion position;
s7, taking the mandrel beam 3 as a reference, aligning the central position of the extrusion die 6, namely taking the central position of the mandrel beam as a reference, aligning the central position of the extrusion die, and controlling concentricity between the mandrel beam 3 and the extrusion die 6: 0.35mm.
In the steps, when concentricity between the front beam (7) and the core beam (3), between the core beam (3) and the extrusion beam (2), between the extrusion beam (2) and the extrusion cylinder (5) and between the core beam (3) and the extrusion die (6) is controlled, a measuring tool only needs a caliper, and other auxiliary tools are not needed to be prepared.
Example 3
The embodiment provides a method for measuring and adjusting concentricity of an extruder, which comprises the following steps:
s1, pushing out an extrusion die 6 to a station for replacing the extrusion die;
s2, pushing the extrusion cylinder 5 to an extrusion position, namely a nearest limit position from the front beam;
s3, using the front beam 7 as a reference, aligning the central position of the core beam 3, namely using the central position of the front beam as a reference, aligning the central position of the core beam, and controlling concentricity between the front beam 7 and the core beam 3: 0.3mm;
s4, taking the core rod beam 3 as a reference, aligning the central position of the extrusion beam 2, namely taking the central position of the core rod beam as a reference, aligning the central position of the extrusion beam, and controlling concentricity between the core rod beam 3 and the extrusion beam 2: 0.3mm;
s5, using the extrusion beam 2 as a reference, aligning the central position of the extrusion barrel 5, namely using the central position of the extrusion beam as a reference, and aligning the central position of the extrusion barrel by 0.3mm;
s6, pushing the extrusion die 6 to an extrusion position;
s7, taking the mandrel beam 3 as a reference, aligning the central position of the extrusion die 6, namely taking the central position of the mandrel beam as a reference, aligning the central position of the extrusion die, and controlling concentricity between the mandrel beam 3 and the extrusion die 6: 0.3mm.
In the steps, when concentricity between the front beam (7) and the core beam (3), between the core beam (3) and the extrusion beam (2), between the extrusion beam (2) and the extrusion cylinder (5) and between the core beam (3) and the extrusion die (6) is controlled, a measuring tool only needs a caliper, and other auxiliary tools are not needed to be prepared.
The method can simply and practically measure and adjust the concentricity of the related parts of the extruder, recover the functional precision of equipment, meet the requirements of production technology, can be implemented in the process of shutdown maintenance, and needs about 2 working days.
The foregoing description is only illustrative of the preferred embodiments of the present invention and is not intended to limit the scope of the invention, but rather the equivalent variations and modifications in shape, construction, characteristics and spirit according to the scope of the claims should be construed to be included in the scope of the claims.
Claims (2)
1. A method for measuring and adjusting concentricity of an extruder, comprising the following steps:
s1, pushing out an extrusion die (6) to a station for replacing the extrusion die;
s2, pushing the extrusion cylinder (5) to an extrusion position;
s3, using the front beam (7) as a reference, and aligning the center position of the core rod beam (3);
s4, taking the core rod beam (3) as a reference, and aligning the central position of the extrusion beam (2);
s5, taking the extrusion beam (2) as a reference, and aligning the central position of the extrusion cylinder (5);
s6, pushing the extrusion die (6) to an extrusion position;
s7, aligning the central position of the extrusion die (6) by taking the mandrel beam (3) as a reference, wherein in the step S3, the concentricity between the front beam (7) and the mandrel beam (3) is controlled: not more than 0.35mm of the total diameter of the tube,
in the step S4, concentricity between the mandrel beam (3) and the extrusion beam (2) is controlled: not more than 0.35mm of the total diameter of the tube,
in the step S5, concentricity control between the extrusion beam (2) and the extrusion cylinder (5): not exceeding 0.55mm.
2. Method for measuring and adjusting the concentricity of an extrusion press according to claim 1, characterized in that in step S7 the concentricity between the mandrel bar (3) and the extrusion die (6) is controlled: not exceeding 0.35mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010520467.4A CN113770190B (en) | 2020-06-10 | 2020-06-10 | Method for measuring and adjusting concentricity of extruder |
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| CN202010520467.4A CN113770190B (en) | 2020-06-10 | 2020-06-10 | Method for measuring and adjusting concentricity of extruder |
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| CN113770190A CN113770190A (en) | 2021-12-10 |
| CN113770190B true CN113770190B (en) | 2023-09-08 |
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| CN116422720B (en) * | 2023-04-27 | 2023-11-10 | 重庆丰利钛新材料科技有限公司 | A vertical extrusion and demoulding production device for titanium alloy pipes |
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| AT410195B (en) * | 2001-05-09 | 2003-02-25 | Technoplast Kunststofftechnik | METHOD AND DEVICE FOR ADAPTING AN EXTRUSION TOOL TO AN EXTRUDER |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3201966A (en) * | 1961-05-23 | 1965-08-24 | Benteler Werke Ag | Apparatus for the extrusion pressing of tubes, especially steel tubes |
| US3861192A (en) * | 1973-02-06 | 1975-01-21 | Toyota Motor Co Ltd | Press for cold extrusion of deep-holed or bottomed cylindrical articles |
| JP2010179332A (en) * | 2009-02-05 | 2010-08-19 | Ube Machinery Corporation Ltd | Extruding press and method for controlling the same |
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| CN105170702A (en) * | 2015-09-25 | 2015-12-23 | 宝钢特钢有限公司 | Center measurement and adjustment method for steel pipe heat extruder |
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