LU102757B1

LU102757B1 - A continuous composite deformation device

Info

Publication number: LU102757B1
Application number: LU102757A
Authority: LU
Inventors: Zhang Xuebin; Zhou Yanjun; Huang Tao; Zhang Yanmin; Wu Baoan; Peng Xiaowen; Cao Jun; Ding Yutian; Wu Hanjiang; Song Kexing; Li Shaolin; Lyu Changchun
Original assignee: Univ Henan Polytechnic; Univ Lanzhou Tech; Chongqing Materials Res Inst Co Ltd; Henan Youke Electronic Mat Co Ltd; Univ Henan Science & Tech
Priority date: 2021-03-08
Filing date: 2021-04-01
Publication date: 2021-10-01
Also published as: CN113020312A; JP2022136949A; JP7164132B2

Abstract

The invention relates to the technical field of mechanical processing and relates to a continuous composite deformation device. The composite deformation device comprises a roller pair, an extrusion die, a reducing drawing die, an extrusion wheel and a planetary roller. The composite deformation device not only makes the performance of the bar material strengthened and improved many times, but also can obtain high-performance bars of the required specifications. It also realizes the continuous production of the entire process, and finally completes the diameter reducing processing of bar for the required specification.

Description

BL-5218 LU102757

REVENDICATION DE LA PRIORITE de la demande de brevet | En Chine | Du 8 mars 2021 | No. 202110251344.X Mémoire Descriptif déposé à l’appui d’une demande de 9 BREVET D’ INVENTION au Luxembourg aunom de: Henan University of Science And Technology No.263, Kaiyuan Avenue, Luolong District, Luoyang City, Henan Province, 471000, Chine Henan Polytechnic University No. 2001 Century Avenue, High-tech District, Jiaozuo City, Henan 454000, Chine Lanzhou University of Technology No.287, Langongping Road, Qilihe District, Lanzhou City, Gansu Province, 730050, Chine Henan Youke Electronic Materials Co., Ltd. Qinyuan Industrial Park, High-Technology Industry Centralization Area, Jiyuan City, Henan Province, Chine Chongqing Materials Research Institute Co, Ltd. No.8, Jiade Road, Caijiagang Town, Beibei District, Chongqing City, 400707, Chine pour : «A CONTINUOUS COMPOSITE DEFORMATION DEVICE».

2021061246.doc/ ERR

BL-5218 LU102757

A CONTINUOUS COMPOSITE DEFORMATION DEVICE

FIELD OF THE INVENTION The invention relates to the technical field of mechanical processing, and specifically relates to a continuous composite deformation device.

BACKGROUND OF THE INVENTION With the rapid development of science and technology and the rapid changes in the market today, the performance requirements for metal materials are getting higher and higher. It has become an indisputable fact that the performance index of metal materials increase with the improvement of the degree of grain refinement. Therefore, the preparation of Fine-grained metallic materials have become an important research direction for the development of high-performance materials. Compared with large plastic deformation technologies such as forging, drawing, extrusion and the like, an equal channel angular extrusion technology (namely Equal Channel Angular Processing, abbreviated in English as ECAP) is mainly used for extrusion processing of bars, which can significantly improve the mechanical properties of metal materials while not changing the cross-section shape of materials in the deformation process. It not only has stronger grain refining ability, but also eliminates the voids and defects of the blank, so that the internal structure of the material has a high degree of uniformity. However, the equal channel angular extrusion technology requires multiple deformations of a single piece in order to accumulate sufficient plastic deformation. Continuous production can not be realized so that the processing efficiency is low. Moreover, at present, it is often undesirable to achieve the desired result with only one strengthening process or apparatus.

Therefore, there is a need to provide an improved solution to the above-mentioned deficiencies of the prior art.

SUMMARY OF THE INVENTION The present invention aims to provide a continuous composite deformation device so as to at least solve the problems that the current equal channel angular extrusion technology can not realize continuous production, resulting in low processing efficiency.

In order to achieve the above object, the present invention provides the following technical

BL-5218 2 LU102757 scheme.

A continuous composite deformation device comprising: a roller pair used for rolling a bar and guiding the bar to move downstream; an extrusion die arranged downstream of the roller pair and used for changing the advancing direction of the bar and generating plastic deformation for the bar; a diameter reducing drawing die arranged downstream of the extrusion die and used to performing diameter reducing extrusion on the bar to make the diameter of the bar smaller; the composite deformation device also comprises an extrusion wheel and a planetary roller, the extrusion wheel and the planetary roller are arranged between the roller pair and the extrusion die, and are used for rolling the bar again.

Beneficial effects: The composite deformation device disclosed by the present invention is a composite deformation device combining a plurality of strengthening processes. The entire process organically combines a plurality of process mechanisms, such as accumulative pack bonding, equal channel angular extrusion, diameter reducing extrusion, continuous extrusion and the like, so that not only the performance of the bar is enhanced for a plurality of times and the high-performance bar with the required specification can be obtained, but also the continuous production of the whole process is realized, and finally the diameter reduction processing of bars with required specifications is finished. The composite deformation device is compact in structure, simple and flexible to operate, and low in cost.

THE DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic structural diagram of a continuous composite deformation device in an embodiment of the present invention.

In figs.: 1. initial roller; 2.bar; 3. first roller; 4. second roller; 5. third roller; 6. extrusion die; 7. diameter reducing drawing die; 8. extrusion wheel groove; 9. extrusion wheel shaft; 10.extrusion wheel; 11. connecting key.

BL-5218 3 LU102757

DETAILED EMBODIMENTS The technical solutions in the embodiments of the present invention will be described clearly and completely below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art are within the scope of the present invention.

According to a specific embodiment of the present invention, as shown in FIG 1, the present invention provides a continuous composite deformation device, which is used for rod blanks continuously cast from a horizontal single crystal or core-filled. The composite deformation device in the present application can be used for copper alloys, aluminum alloys, magnesium alloys, etc., such as copper-clad aluminum rod blanks, aluminum alloy rod blanks, magnesium alloy rod blanks, etc. The composite deformation device comprises a roll pair, extrusion die 6 and diameter reducing drawing die 7.

The roller pair comprises two initial rollers 1 and is used for rolling the bar 2 and guiding the bar 2 to move downstream, that is, the bar 2 is guided to feed along the horizontal direction by the roller pair. In other embodiments, multiple pairs of rollers may be arranged in parallel along the horizontal direction.

The extrusion die 6 is arranged downstream of the roller pair and is used for changing the advancing direction of the bar 2 and generating plastic deformation to the bar 2. The diameter reducing drawing die 7 is arranged downstream of the extrusion die 6 and is used for performing diameter reducing and extruding on the bar 2 so as to reduce the diameter of the bar 2.

The composite deformation device also comprises an extrusion wheel 10 and a planetary roller, the extrusion wheel 10 and the planetary roller are arranged between the roller pair and the extrusion die 6, and the extrusion wheel 10 and the first roller 3 are used for carrying out secondary rolling on the bar 2.

In this embodiment, the planetary rollers comprise a first roller 3, a second roller 4 and a third roller 5 which are arranged around the extrusion wheel 10. The first roller 3, the second roller 4 and the third roller 5 are equivalent to three small planetary rollers distributed annularly around the extrusion wheel 10. The bar 2 passes through the gap between the first roll 3, the second roll 4, the third roll 5, and the extrusion wheel 10 in sequence, so that the bar 2 is rolled three times and moves forwards

BL-5218 4 LU102757 abuting the surface of the extrusion wheel 10. A pack rolling bending channel is formed between the extrusion wheel 10 and the first roller 3, the second roller 4 and the third roller 5. The bar 2 changes the moving direction under the action of the three rollers while the bar 2 is subjected to three times of rolling, so that the bar 2 clings to the surface of the extrusion wheel 10 and becomes a bent shape. In other embodiments, two rollers, or more than four rollers, may be provided. Bar 2 has accumulated a large amount of deformation after pack rolling of the roller pair, the extrusion wheel 10 and the three rollers (four rolling passes in total).

The extrusion wheel 10 and the planetary roller have coordinated speeds, so that the bar 2 can | pass through each deformation channel at a constant speed, and a continuous processing effect is achieved. Since a plurality of rollers are provided in cooperation with the extrusion wheel 10, the power required for continuous processing is guaranteed. In one extrusion process, the bar 2 passes through a plurality of deformation channels, which greatly improves the strengthening effect of bar

2. The extrusion wheel 10 is arranged on the extrusion wheel shaft 9, and the extrusion wheel 10 and the extrusion wheel shaft 9 are connected through a connecting key 11.

The diameters of the first roller 3, the second roller 4 and the third roller 5 are the same, and the diameter of the extrusion wheel 10 is larger than that of the first roller 3, the second roller 4, and the third roller 5. The included angle formed by the line connecting the center of the first roller and the center of the extrusion wheel and the line connecting the center of the second roller and the center of the extrusion wheel, is equal to the included angle formed by the line connecting the center of the second roller and the center of the extrusion wheel and the line connecting the center of the third roller and the center of the extrusion wheel. In this embodiment, the above included angles are all 30° , and the distance between the first roller 3, the second roller 4, the third roller 5 and the extrusion wheel 10 is the same. In other embodiments, according to process requirements, the position of the rollers can be adjusted and the position of each planetary wheel can be adjusted, so that the deformation of each rolling can be adjusted, and the effects of increasing the friction force and the feeding force of the feeding (i.e. the bar 2) can be achieved while the amount of rolling deformation is increased.

The extrusion die 6 comprises an arc-shaped channel and a linear channel, and a tangent line at the intersection of the arc-shaped channel and the linear channel is perpendicular to the linear channel. The arc-shaped channel and the linear channel form an extrusion cavity. The surface of one side of the inlet of the extrusion cavity is arc-shaped, and the other side is a basal plane. The

BL-5218 > LU102757 arc-shaped surface and the basal plane are matched with the surface of the extrusion wheel to form a shearing bending channel. Passing through the shearing bending channel is equivalent to finishing one-pass equal-channel angular extrusion. The bar 2 turns approximately 90° in the process of entering the linear channel from the arc-shaped channel, and the bar 2 undergoes severe approximate shear deformation in the process of passing through the shearing bending channel, so | that a large amount of plastic deformation are accumulated in the bar 2. That the bar 2 passes through the shearing bending channel, is equivalent to finishing one-pass equal-channel angular extrusion, and the pack rolling bending channel is successively connected with the shearing bending channel.

In this embodiment, the extrusion die 6 is located downstream of the third roller 5, and the arc-shaped channel is arranged adjacent to the extrusion wheel 10. The bar 2 enters the arc-shaped channel after being rolled by the extrusion wheel 10 and the third roller 5. The arc-shaped surface of one side of the arc-shaped channel is the surface of the extrusion wheel 10, and the arc-shaped surface of the other side of the arc-shaped channel is arranged on the extrusion die 6. That is, the extrusion die 6 is placed beside the extrusion wheel 10, and the arc-shaped channel is formed by a part of the outer surface of the extrusion wheel 10 and the arc-shaped surface on the extrusion die 6 together, so that the bar 2 is always in contact with the extrusion wheel 10 when entering the arc-shaped channel. The extrusion wheel 10 is capable of providing advancing power to the bar 2, which facilitates the bar 2 to enter the extrusion die 6 and provides as much power as possible for the bar 2 to enter the linear channel from the arc-shaped channel.

An inlet of the diameter reducing drawing die 7 is connected with an outlet of the extrusion die 6. The extrusion die 6 is provided with a rectangular groove on the right end face. The diameter reducing drawing die 7 is cuboid in shape, and embedded in the rectangular groove of the extrusion die 6. The outlet diameter of the diameter reducing drawing die 7 is smaller than the inlet diameter, thereby the diameter reducing process of the bar 2 is completed.

When the bar 2 is processed using the continuous composite deformation device, the bar 2 in this example is a Cu-20Ag as-cast rod blank produced by a horizontal continuous casting device, and the produced as-cast rod blank is introduced into the continuous composite deformation device. The specific process is as follows: The bar 2 is fed under the guiding effect of a pair of initial rollers | and enters between the extrusion wheel 10 and the first roller 3 along the horizontal direction (and the direction tangent to

BL-5218 6 LU102757 the extrusion wheel 10). The first roller 3, the second roller 4 and the third roller 5 are three small planetary rollers annularly distributed around the extrusion wheel 10. The three planetary rollers form a planetary roller set. A pack rolling bending channel is formed between the planetary roller set and the extrusion wheel 10. After the bar 2 comes into contact with the rotating extrusion wheel 10, under the action of the friction force between the planetary roller set, the extrusion wheel 10 and the extrusion wheel groove 8 and the bar 2, the bar 2 enters the pack rolling bending channel, so | that the bar 2 accumulates a large amount of plastic deformation. The extrusion die 6 is set on the right side of the extrusion wheel 10, and while located below the third roller 5. The arc-shaped surface on one side and linear channel of the extrusion die 6 are matched with a part of the outer surface of the extrusion wheel 10 to form a shearing bending channel. After the bar 2 passing through the pack rolling bending channel, the bar 2 is immediately pushed into the shearing bending channel under the driving action of friction force. Severe approximate shear deformation occurs at the corners of the die cavity of the extrusion die 6, which made the bar 2 accumulate a large amount of plastic deformation. After passing through the shearing bending channel, the bar 2 finally passes through the diameter reducing drawing die 7, and the diameter reducing extrusion process is completed under the action of the diameter reducing drawing die 7.

In the entire process flow, the pack rolling bending channel, the shearing bending channel, and the diameter reducing extrusion channel are successively connected; by one extrusion process, the bar material continuously passes through the three extrusion cavities, and the extrusion efficiency of the bar 2 is greatly improved. That is, the bar 2 is drawn in the cavity of the diameter reducing drawing die 7 after completing the strain accumulation process such as multi-wheel rolling (i.e. accumulative pack rolling), equal channel angular extrusion, continuous extrusion, etc. So far, a set of continuous extrusion strengthening process of bar 2 with required specifications has been completed.

In summary, in the technical scheme of the continuous composite deformation device provided by the invention, a plurality of process mechanisms such as accumulative pack rolling, equal-channel angular extrusion, diameter reducing extrusion, continuous extrusion and the like are organically combined in the entire process, so that the performance of the bar is enhanced for multiple times, and continuous production of the entire process is also realized. Moreover, the composite deformation device is compact in structure, simple and flexible to operate. and low in cost.

BL-5218 LU102757 The above is only the preferred example the present invention, and is not intended to limit the present invention.

Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the protection scope of claim in the present invention.

Claims

BL-5018 8 LU102757 Claims: I. A continuous composite deformation device, characterized in that, the composite deformation device comprises: a roller pair used for rolling a bar and guiding the bar to move downstream; an extrusion die arranged downstream of the roller pair and used for changing the advancing | direction of the bar and generating plastic deformation for the bar; a diameter reducing drawing die arranged downstream of the extrusion die and used to perform diameter reducing extrusion on the bar r to make the diameter of the bar smaller; the composite deformation device also comprises an extrusion wheel and a planetary roller, wherein the extrusion wheel and the planetary roller are arranged between the roller pair and the extrusion die, and the extrusion wheel and the planetary roller are used for rolling the bar again.
2. The continuous composite deforming device according to claim 1, characterized in that, the planetary rollers comprise a first roller, a second roller and a third roller which are arranged around the extrusion wheel, the bar passes through the gap between the first roller, the second roller, the third roller, and the extrusion wheel, so that the bar 2 is rolled three times and moves forwards abuting the surface of the extrusion wheel.
3.The continuous composite deformation device according to claim 2, characterized in that, The extrusion die comprises an arc-shaped channel and a linear channel, and a tangent line at the intersection of the arc-shaped channel and the linear channel is perpendicular to the linear channel.
4. The continuous composite deformation device according to claim 3, characterized in that, the extrusion die is located downstream of the third roller, and the arc-shaped channel is arranged adjacent to the extrusion wheel, and the bar 2 enters the arc-shaped channel after being rolled by the extrusion wheel and the third roller.
5. The continuous composite deformation device according to claim 4, characterized in that,

BL-5218 U10275 an arc-shaped surface of one side of the arc-shaped channel is a surface of the extrusion wheel. and an arc-shaped surface of the other side of the arc-shaped channel is arranged on the extrusion die.
6. The continuous composite deformation device according to claim 2, characterized in that, an included angle formed by the line connecting the center of the first roller and the center of the extrusion wheel and the line connecting the center of the second roller and the center of the extrusion wheel, is equal to an included angle formed by the line connecting the center of the | second roller and the center of the extrusion wheel and the line connecting the center of the third | | roller and the center of the extrusion wheel.
7. The continuous composite deformation device according to claim 2, characterized in that, diameters of the first roller, the second roller and the third roller are the same, and the diameter of the extrusion wheel is larger than that of the first roller.
8.The continuous composite deformation device according to claim 1, characterized in that, an inlet of the diameter reducing drawing die is connected with an outlet of the extrusion die.
9.The continuous composite deformation device according to claim 8, characterized in that, the diameter reducing drawing die is embedded in the outlet of the extrusion die.
10. The continuous composite deformation device according to any one of claims 1-9, characterized in that, an outlet diameter of the diameter reducing drawing die is smaller than an inlet diameter. | |