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A kind of forging method of high-speed train axle box body

A technology of axle box and pre-forging, which is applied to railway car body parts, manufacturing tools, vehicle parts, etc. It can solve the problems that have not yet been involved in the distribution of the volume of the forging of the axle box, the distribution of the forging streamline of the shape of the pre-forging, and achieve the deformation of the forging Good uniformity, reduced extrusion load, and high material utilization

Active Publication Date: 2018-06-12
SHANDONG UNIV +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it has not yet involved the volume distribution, pre-forging shape, die structure and forging streamline distribution and other related processes in the pre-forging process of axle box forgings

Method used

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  • A kind of forging method of high-speed train axle box body
  • A kind of forging method of high-speed train axle box body
  • A kind of forging method of high-speed train axle box body

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Embodiment Construction

[0042] The present invention will be further introduced below in conjunction with the accompanying drawings and specific embodiments.

[0043] like figure 1 Shown is the outline diagram of the main geometric features of the high-speed train axle box forging. The axle box forging is composed of the end part 5 of the axle box forging, the middle part 6 of the axle box forging and the rod part 7 of the axle box forging (referred to as the end part 5 , middle part 6 and rod part 7), the material is 7050 high-strength aluminum alloy, and the total volume of the axle box hot forging (including flash) is about 3.404×10 7 mm 3 , the middle part 6 occupies the largest volume, about 2.5515×10 7 mm 3 , the volume of rod 7 is 6.749×10 6 mm 3 , while the volume of end 5 is only 1.736×10 6 mm 3 , it can be seen that the volume of each part is very different. In addition, the maximum contour lines of the end part 5, the middle part 6 and the rod part 7 are not on the same horizontal l...

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Abstract

The invention discloses a forging method of a high-speed train axle box body. The forging method comprises the following steps that 1, blank blanking is conducted, wherein a blank is a cylindrical extrusion bar, and the blank with the set length is obtained through sawing blanking; 2, transverse flattening upsetting is conducted, wherein transverse flattening upsetting is conducted on the blank to obtain a prefabricated blank; 3 the prefabricated blank is extruded to obtain a pre-forging piece, wherein the pre-forging piece sequentially comprises an end corresponding to the shape of the axle box body, a middle and a rod portion in the length direction, and volume distribution of the pre-forging piece is matched with that of the axle box body; 4, final forging piece molding is conducted, wherein the pre-forging piece is placed in a final forging mold to be subjected to final forging, and a final forging piece is obtained. Volume distribution of the pre-forging piece is well matched with that of the final forging piece, an extrusion process is adopted in pre-forging piece molding, no flash is generated, the pre-forging piece is stably positioned in a final forging mold cavity, and therefore it can be guaranteed that the final forging piece is well molded.

Description

technical field [0001] The invention relates to a new forging process of an aluminum alloy axle box body of a high-speed train and a mold structure thereof, in particular to a shape design method of a preformed part of an axle box body forging with a large difference in volume distribution and a complex shape and a mold structure thereof. Background technique [0002] High-speed trains refer to railway trains with a running speed exceeding 200km / h. They occupy a pivotal position in modern transportation and have the advantages of high passenger capacity, large transport capacity, fast speed, low energy consumption, and safety and environmental protection. Since the world's first high-speed railway was built in 1964, high-speed railway has rapidly entered people's lives and become an irreplaceable part. In order to realize the lightweight of high-speed trains, aluminum alloys with high strength and low density are generally used as materials for structural parts of high-speed...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/02B21J13/02B21K7/12B21K1/26
CPCB21J5/02B21J13/02B21K1/26B21K7/12
Inventor 赵国群徐潇杨昭程仁策廖茂罗顺成陈良王广春
Owner SHANDONG UNIV
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