Extrusion preparation device and preparation method of Babbitt metal composite material
Technical Field
The invention relates to the technical field of alloy materials, in particular to an extrusion preparation device and a preparation method of a Babbitt metal composite material.
Background
The requirements of the Babbitt metal bearing bush material on high use temperature, low starting friction and low friction coefficient are increasing, and the introduction of reinforcing fibers into the Babbitt metal is an ideal solution. However, the problems of large density difference, non-wetting interface and difficult metallurgical compatibility exist between the Babbitt metal and the reinforced fiber, so that the traditional smelting-casting method cannot prepare the composite material of the Babbitt metal and the reinforced fiber with good performance at all. This has led to some stagnation in the research of babbitt metal and reinforced fibre composites.
At present, some powder metallurgy methods and thermal spraying methods are used for relatively uniformly mixing reinforcing fibers into metal materials, but only small workpieces can be prepared by the methods, and large workpieces cannot be prepared by the methods. The Babbitt metal bearing shells are basically applied to medium and large bearing equipment, so that the prior processes are difficult to apply. And these processes require specialized equipment, resulting in large investment, complex processes, and long cycle times. There is also a considerable distance from the industrial application. Therefore, an extrusion preparation device and a preparation method of the Babbitt metal composite material are provided to solve the problems.
Disclosure of Invention
A first object of the present invention is to provide an extrusion preparation apparatus for babbitt metal composite material;
A second object of the present invention is to provide a method for preparing a babbitt metal composite.
To achieve the first object of the present invention, an embodiment of the present invention provides an extrusion preparing apparatus for a babbitt alloy composite material, comprising a housing means including a heating means and having a housing cavity for housing a babbitt alloy and a reinforcing fiber, the heating means for applying heat to the housing cavity to heat the babbitt alloy and the reinforcing fiber, and a punching means including a first punch and a second punch for alternately reciprocating in the housing cavity to punch a mixed babbitt alloy and reinforcing fiber.
In the related technology, the problems of large density difference, non-wetting interface and difficult metallurgical compatibility exist between the Babbitt metal and the reinforced fiber, so that the traditional smelting-casting method cannot prepare the composite material of the Babbitt metal and the reinforced fiber with good performance at all, but only small workpieces can be prepared by using a powder metallurgy method and a thermal spraying method, and large workpieces cannot be prepared. The Babbitt metal bearing shells are basically applied to medium and large bearing equipment, so that the prior processes are difficult to apply. And these processes require specialized equipment, resulting in large investment, complex processes, and long cycle times. The invention provides an extrusion preparation device of a Babbitt metal composite material, which is characterized in that a mixture of Babbitt metal and reinforcing fibers is added into a containing device, the mixture is stamped and mixed through a stamping device, and the Babbitt metal and the reinforcing fibers are alternately stamped and mixed by a first punch and a second punch, so that the Babbitt metal and the reinforcing fibers continuously perform relative movement, and finally the reinforcing fibers are uniformly distributed in the Babbitt metal. The reinforced fibers in the Babbitt metal and reinforced fiber composite material obtained by the method are uniformly distributed, and the composite material has high density and excellent comprehensive performance.
In addition, the technical scheme provided by the embodiment of the invention can also have the following additional technical characteristics:
In one example of the invention, the accommodating device further comprises an extrusion die, a fixing seat and a fixing seat, wherein the extrusion die surrounds and defines an accommodating inner cavity, the fixing seat is sleeved outside the extrusion die, the inner wall of the heating device is attached to the outer wall of the extrusion die, and the inner wall of the fixing seat is matched with the outer wall of the extrusion die and is used for fixing the extrusion die.
Compared with the prior art, the technical effects of the fixing seat is sleeved on the outer side of the extrusion die, the fixing seat plays a role in fixing and fastening the extrusion device, the extrusion die is prevented from shaking in the stamping process, the quality of a processed composite material is reduced, the heating device is arranged on the outer side of the extrusion die, the composite material in the extrusion die is heated in the stamping process, the Babbitt metal plasticity is improved, the deformation resistance is reduced, the extrusion die is easy to flow and form, a good forged structure is obtained, meanwhile, the heating device is arranged around the laminating extrusion die, the composite material is uniformly heated, the internal structure of the processed composite material is more uniform and stable, the heating time is shortened, and the processing efficiency is improved.
In one example of the invention, the extrusion die comprises a first die comprising a first cavity, a second die comprising a second cavity, wherein the first die and the second die are symmetrically arranged, and the first cavity and the second cavity together form at least part of the receiving cavity.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is that the first die and the second die are surrounded to form the accommodating cavity for accommodating the Babbitt metal and the reinforcing fibers, at least part of the accommodating cavity is formed by the first cavity and the second cavity together and is used for accommodating the mixture of the Babbitt metal and the reinforcing fibers, and meanwhile, the extrusion die is arranged into two parts, so that the device is convenient to transport and occupied space is reduced.
In one example of the present invention, the first mold and the second mold are detachably disposed.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is that the first die and the second die are designed to be detachable, so that the processed composite material is conveniently taken out of the accommodating cavity, after the composite material is stamped and mixed, the first die and the second die are detached to separate the composite material from the accommodating device, and the composite material is continuously stamped so that the composite material and the extrusion die are welded under high pressure, and the situation can be avoided by adopting the first design, so that the material is easier to obtain.
In one example of the invention, the second punch includes a cavity penetrating an inner space of the second punch, wherein at least part of the first punch is formed in a columnar structure, and an outer wall of the columnar structure of the first punch and an inner wall of the cavity of the second punch are fitted to each other during at least part of the alternately reciprocating movement of the first punch and the second punch.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is that the combination of the first punch and the second punch can fully punch and mix materials at different positions in the accommodating cavity, so that the reinforced fibers are distributed more uniformly in the Babbitt alloy, and the quality of the composite material is improved.
In one example of the present invention, the end of the first punch is raised toward the end near the receiving means and the end of the second punch is recessed toward the end near the receiving means.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is that the Babbitt alloy and the reinforcing fiber at the middle part are moved towards the periphery of the extrusion die by extrusion of the first punch, then the Babbitt alloy and the reinforcing fiber at the periphery of the extrusion die are moved towards the center of the extrusion die by the second punch, and the Babbitt alloy and the reinforcing fiber are continuously and relatively moved by the reciprocating and alternating movement of the second punch and the first punch, so that the reinforcing fiber is uniformly distributed in the Babbitt alloy.
In order to achieve the second object of the present invention, an embodiment of the present invention provides a method for preparing a babbitt metal composite material, the method comprising the steps of:
S100, preparing a mixture of Babbitt metal and reinforcing fibers;
S200, adding the mixture into a containing device, starting a heating device, and controlling the temperature of a containing cavity of the containing device to reach T ℃;
and S300, controlling the first punch and the second punch of the stamping device to alternately reciprocate in the accommodating cavity so as to perform stamping and mixing on the mixture in the accommodating device.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is that the invention provides a stamping and mixing mode, so that the reinforcing fibers are uniformly distributed in the Babbitt metal, and the obtained composite material has the advantages of uniform distribution of the reinforcing fibers, high compactness of the composite material and excellent comprehensive performance.
In one embodiment of the present invention, S100 specifically includes:
S110, processing the Babbitt metal into a plate body;
s120, uniformly paving reinforcing fibers on the plate body;
s130, alternately stacking the plate body and the reinforcing fibers according to the sequence of one layer of plate body and one layer of reinforcing fibers to obtain a stacked body;
and S140, pressing the stacked body to obtain a mixture, wherein the pressing pressure is 100Mpa, and the pressure maintaining time is 5min.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is that the method of layering and stacking the Babbitt metal plate body and the reinforcing fibers at intervals is adopted, so that the reinforcing fibers have a relatively uniform initial value in the Babbitt metal, the number of stamping processing times is reduced, the processing efficiency is greatly improved, and the distribution of the reinforcing fibers in the composite material is more uniform.
In one embodiment of the present invention, S300 specifically includes:
s310, controlling the first punch to extrude the mixture, and controlling the first punch to return after extrusion, wherein the extrusion speed of the first punch is 20mm/min;
s320, controlling the second punch to extrude the mixture, and controlling the second punch to return after extrusion, wherein the extrusion speed of the second punch is 20mm/min;
s330, repeating S310 and S320 for 150-170 times.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is that the first punch is utilized. The reciprocating alternating motion of the second punch head enables the Babbitt metal and the reinforcing fibers to continuously generate relative motion, and finally the reinforcing fibers are uniformly distributed in the Babbitt metal.
In one example of the invention, T is 110-130 ℃.
Compared with the prior art, the technical effect achieved by adopting the technical scheme is that the Babbitt metal has good plasticity and fluidity in the temperature range, is favorable for fully mixing the Babbitt metal and the reinforcing fiber, reduces the stamping difficulty, reduces the stamping power consumption and saves the cost.
After the technical scheme of the invention is adopted, the following technical effects can be achieved:
(1) The reinforced fibers in the composite material are uniformly distributed, the density of the composite material is high, and the comprehensive performance is excellent;
(2) The processing time is short, and the processing efficiency is higher;
(3) The process is simple and the process cost is low.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of an extrusion device for preparing a babbitt metal composite material according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of stacking of a babbitt metal and a reinforcing fiber according to an embodiment of the present invention.
FIG. 3 is a second schematic diagram of a stacking method of Babbitt metal and reinforcing fibers according to an embodiment of the present invention.
Fig. 4 is a schematic diagram of a preparation method of a babbitt metal composite material according to an embodiment of the present invention.
FIG. 5 is a second schematic diagram of a method for preparing a Babbitt metal composite according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a stamping device according to an embodiment of the present invention.
Reference numerals illustrate:
10-extrusion preparation device of Babbitt metal composite material, 100-containing device, 110-containing inner cavity, 120-extrusion die, 121-first die, 121 a-first inner cavity, 122-second die, 122 a-second inner cavity, 130-heating device, 140-fixing seat, 200-stamping device, 210-first punch, 220-second punch and 221-cavity.
Detailed Description
In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with present invention are described in detail with embodiments of the present invention including only some but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The following describes some embodiments of the present invention with reference to fig. 1-6.
[ First embodiment ]
As shown in fig. 1, an embodiment of the present invention provides an extrusion apparatus 10 for preparing a babbitt alloy composite material, comprising a holding device 100, the holding device 100 including a heating device 130 and having a holding cavity 110, the holding cavity 110 for holding babbitt alloy and reinforcing fibers, the heating device 130 for applying heat to the holding cavity 110 to heat the babbitt alloy and reinforcing fibers, and a punching device 200, the punching device 200 including a first punch 210 and a second punch 220 for alternately reciprocating in the holding cavity 110 to punch mixed babbitt alloy and reinforcing fibers.
In the related technology, the problems of large density difference, non-wetting interface and difficult metallurgical compatibility exist between the Babbitt metal and the reinforced fiber, so that the traditional smelting-casting method cannot prepare the composite material of the Babbitt metal and the reinforced fiber with good performance at all, but only small workpieces can be prepared by using a powder metallurgy method and a thermal spraying method, and large workpieces cannot be prepared. The Babbitt metal bearing shells are basically applied to medium and large bearing equipment, so that the prior processes are difficult to apply. And these processes require specialized equipment, resulting in large investment, complex processes, and long cycle times. The invention provides an extrusion preparation device 10 of a Babbitt metal composite material, which is characterized in that a mixture of Babbitt metal and reinforcing fibers is added into a containing device 100, the mixture is subjected to punching mixing by a punching device 200, and the Babbitt metal and the reinforcing fibers are alternately subjected to punching mixing by a first punch 210 and a second punch 220, so that the Babbitt metal and the reinforcing fibers continuously perform relative movement, and finally the reinforcing fibers are uniformly distributed in the Babbitt metal. The reinforced fibers in the Babbitt metal and reinforced fiber composite material obtained by the method are uniformly distributed, and the composite material has high density and excellent comprehensive performance.
In this embodiment, the accommodating device 100 further includes an extrusion die 120, the extrusion die 120 surrounds and defines an accommodating cavity 110, a fixing base 140 sleeved outside the extrusion die 120, wherein an inner wall of the heating device 130 is attached to an outer wall of the extrusion die 120, and an inner wall of the fixing base 140 is matched with the outer wall of the extrusion die 120 and is used for fixing the extrusion die 120.
Specifically, the fixing seat 140 is sleeved on the outer side of the extrusion die 120, plays a role in fixing and fastening the extrusion device, prevents the extrusion die 120 from shaking in the stamping process, and accordingly reduces the quality of the processed composite material, the heating device 130 is arranged on the outer side of the extrusion die 120, heats the composite material in the extrusion die 120 in the stamping process, improves the plasticity of the Babbitt metal, reduces the deformation resistance, enables the Babbitt metal to be easy to flow and form and obtains good forged tissues, and meanwhile, the heating device 130 is arranged around the laminating extrusion die 120, so that the composite material is uniformly heated, the internal structure of the processed composite material is more uniform and stable, the heating time is shortened, and the processing efficiency is improved.
For example, the fixing base 140 is provided with a locking mechanism to facilitate the disassembly and assembly of the extrusion device.
In the embodiment, the extrusion die 120 comprises a first die 121, wherein the first die 121 comprises a first inner cavity 121a, a second die 122, and the second die 122 comprises a second inner cavity 122a, wherein the first die 121 and the second die 122 are symmetrically arranged, and the first inner cavity 121a and the second inner cavity 122a form at least part of the accommodating inner cavity 110 together.
Specifically, at least a portion of the accommodating cavity 110 is formed by the first cavity 121a and the second cavity 122a together, so as to accommodate the mixture of the babbitt metal and the reinforcing fiber, and meanwhile, the extrusion die 120 is arranged into two parts, which is beneficial to the transportation of the device and reduces the occupied space.
For example, the bottom of the extrusion die 120 is configured to have an inner circular bottom structure such that the surrounding composite material flows directly to the middle when being extruded, and the composite material in the middle flows to the periphery when being extruded, further promoting the mixing of the babbitt metal and the reinforcing fibers, and making the distribution of the reinforcing fibers in the composite material more uniform.
In this embodiment, the first mold 121 and the second mold 122 are detachably disposed.
Specifically, the first die 121 and the second die 122 are designed to be detachable, so that the processed composite material can be conveniently taken out of the accommodating cavity 110, after the composite material is stamped and mixed, the first die 121 and the second die 122 are detached to separate the composite material from the accommodating device 100, and the composite material is welded with the extrusion die 120 under high pressure due to continuous stamping of the composite material, so that the situation can be avoided, and the material is easier to obtain.
For example, the contact surfaces of the first mold 121 and the second mold 122 should coincide with each other and should be flat and smooth to avoid the composite material from entering into the gap between the first mold 121 and the second mold 122.
By way of example again, a layer of sealing material should be provided between the first die 121 and the second die 122, as well as to avoid the composite material entering the gap between the first die 121 and the second die 122.
In the present embodiment, the second punch 220 includes a cavity 221 penetrating through an inner space of the second punch 220, wherein at least a portion of the first punch 210 is formed in a cylindrical structure, and an outer wall of the cylindrical structure of the first punch 210 and an inner wall of the cavity 221 of the second punch 220 are attached to each other during at least a portion of the alternately reciprocating movement of the first punch 210 and the second punch 220.
Specifically, the combination of the first punch 210 and the second punch 220 can perform sufficient stamping and mixing on the materials at different positions in the accommodating cavity 110, so that the reinforcing fibers are distributed more uniformly in the babbitt alloy, and the quality of the composite material is improved.
For example, the first punch 210, the second punch 220 and the side surface of the accommodating cavity 110 are all cylindrical, and the design is adopted so that the device has no dead angle, the babbitt alloy and the reinforcing fiber can be fully mixed, and the phenomenon that the reinforcing fiber or the babbitt alloy is accumulated at certain parts of the composite material is avoided.
In this embodiment, the end of the first punch 210 protrudes toward the end near the accommodating device 100, and the end of the second punch 220 is recessed toward the end near the accommodating device 100.
Specifically, the pastille and the reinforcing fiber in the middle part are moved to the peripheral direction of the extrusion die 120 by extrusion of the first punch 210, then the pastille and the reinforcing fiber in the periphery of the extrusion die 120 are moved to the central direction of the extrusion die 120 by the second punch 220, and the pastille and the reinforcing fiber are continuously moved relatively by the reciprocating alternating movement of the second punch 220 and the first punch 210, so that the state that the reinforcing fiber is uniformly distributed in the pastille is finally achieved.
For example, the first ram 210 has a rounded protrusion at its end and the second ram 220 has a rounded depression at its end, and the rounded protrusions and depressions provide less resistance to the composite material in flow mixing and facilitate mixing.
[ Second embodiment ]
Further, a preparation method for preparing the Babbitt metal composite by adopting the device in the embodiment comprises the following steps:
S100, preparing a mixture of Babbitt metal and reinforcing fibers;
S200, adding the mixture into the containing device 100, starting the heating device 130, and controlling the temperature of the containing cavity 110 of the containing device 100 to reach T ℃;
The first ram 210 and the second ram 220 of the stamping device 200 are controlled to alternately reciprocate in the accommodating chamber 110 to stamp-mix the mixture in the accommodating device 100S 300.
Specifically, the invention provides a punching mixing mode, so that the reinforcing fibers are uniformly distributed in the Babbitt metal, and the obtained composite material has the advantages of uniform distribution of the reinforcing fibers, high density of the composite material and excellent comprehensive performance.
In this embodiment, S100 specifically includes:
S110, processing the Babbitt metal into a plate body;
s120, uniformly paving reinforcing fibers on the plate body;
s130, alternately stacking the plate body and the reinforcing fibers according to the sequence of one layer of plate body and one layer of reinforcing fibers to obtain a stacked body;
and S140, pressing the stacked body to obtain a mixture, wherein the pressing pressure is 100Mpa, and the pressure maintaining time is 5min.
Specifically, the method of layering and stacking the Babbitt metal plate body and the reinforcing fibers at intervals is adopted, so that the reinforcing fibers have relatively uniform initial values in the Babbitt metal, the number of stamping processing times is reduced, the processing efficiency is greatly improved, and the reinforcing fibers are distributed more uniformly in the composite material.
In this embodiment, S300 specifically includes:
S310, controlling the first punch 210 to extrude the mixture, and controlling the first punch 210 to return after extrusion, wherein the extrusion speed of the first punch 210 is 20mm/min;
s320, controlling the second punch 220 to extrude the mixture, and controlling the second punch 220 to return after extrusion, wherein the extrusion speed of the second punch 220 is 20mm/min;
s330, repeating S310 and S320 for 150-170 times.
Specifically, the first punch 210 and the second punch 220 reciprocate alternately to make the Babbitt metal and the reinforcing fiber move relatively continuously, so as to reach the state of uniformly distributing the reinforcing fiber in the Babbitt metal.
In this embodiment, T is 110-130 ℃.
Specifically, the Babbitt metal has good plasticity and fluidity in the temperature range, is favorable for fully mixing the Babbitt metal and the reinforcing fiber, reduces the stamping difficulty, reduces the stamping power consumption and saves the cost.
It should be noted that the above-mentioned embodiments are merely for illustrating the technical solution of the present invention, and not for limiting the same, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it should be understood by those skilled in the art that the technical solution described in the above-mentioned embodiments may be modified or some technical features may be equivalently replaced, and these modifications or substitutions do not make the essence of the corresponding technical solution deviate from the spirit and scope of the technical solution of the embodiments of the present invention.