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Method for forging combined forged steel coupler yoke for railway vehicles

A railway vehicle and hook tail frame technology is applied in the forging field of combined forged steel hook tail frame, which can solve the problems of difficult process, low material utilization rate, short service life and other problems of the integral forged steel hook tail frame, and achieves a reduction in machine tools. The effect of adding allowance, high material utilization rate and long service life

Active Publication Date: 2006-07-26
CHONGQING CHANGZHENG HEAVY IND
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a forging method for a combined forged steel coupler frame for railway vehicles, which solves the defects of air holes, shrinkage, inclusions and cracks in the existing cast steel coupler frame, and has a short service life. The hook tail frame also has problems such as difficult process, large amount of machine addition and low material utilization rate.

Method used

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  • Method for forging combined forged steel coupler yoke for railway vehicles
  • Method for forging combined forged steel coupler yoke for railway vehicles
  • Method for forging combined forged steel coupler yoke for railway vehicles

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Embodiment Construction

[0023] The process steps of the method of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0024] Such as Figure 1 to Figure 5 As shown, take the production of railway coupler yoke frame No. 17 as an example. The yoke frame is a frame-type thin-walled structure with a minimum wall thickness of 28mm and a minimum height of 140mm. The square hole at the head cannot be forged, and the draft angle needs to be machined. , the amount of machining is large, the utilization rate of materials is low, the weight of the coupler frame is 97.5Kg, and it must be forged on a 16t hammer or other large die forging equipment. The manufacturing steps are:

[0025] (1) Blanking to obtain a blank of a certain length.

[0026] (2) Blank making, the blank obtained by blanking is heated and drawn on the free forging anvil to make blank, or other process methods are used to make blank, so that the blank is initially def...

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Abstract

The invention relates the forging method of composite steel-forged coupler yoke frame, comprising blanking, making flan, die forging forming, cutting edge, preprocessing, bending forming, welding, heat treatment and machining. Making flan is that the blank is forged to get the explosion blank whose shape and size are close to coupler yoke frame; die forging forming is that the blank is putted in final forging mold cavity to get the explosion rough; bending forming is that the explosion rough is bended to U-shaped; welding is combination welding to form butt plate of coupler yoke frame. The invention possesses the following characters: metal fiber current direction is good, forging forming is easy, the die lifetime is long, forging and machining difficulty are reduced, material utilization is high, and the cost is low.

Description

technical field [0001] The invention relates to a forging method of a combined forged steel coupler frame for railway vehicles. Background technique [0002] The coupler frame is an important part of the coupler buffer device on a railway vehicle. When the vehicle is towed, connected and buffered, it directly completes the transmission of the longitudinal force between the vehicles. With the development of my country's railway construction in the direction of heavy-duty speed-up, traditional cast steel coupler frames inevitably have defects such as pores, shrinkage, inclusions, and cracks due to inherent factors in the casting process, and the existence of these defects has a great impact on railway heavy-duty vehicles. High-speed operation constitutes a potential safety hazard. Judging from the inspection and maintenance of railway wagons in operation at present, about 40% of the problems are all on the coupler frame. Therefore, it is very urgent to improve the manufacturing...

Claims

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Application Information

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IPC IPC(8): B23P23/04B21J5/02B21J1/04
Inventor 袁灿伦罗正章杨方彤
Owner CHONGQING CHANGZHENG HEAVY IND
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