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Forging process of left half axle and right half axle for automobile

A technology of left and right and automobiles, applied in the field of forging, can solve the problems of multiple processes, easy bending of blanks to form interlayers, and high cost, and achieve the effects of improving production efficiency, facilitating promotion and utilization, and simplifying production processes

Inactive Publication Date: 2015-11-18
安徽众鑫科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, in the automobile industry, there are many kinds of spare parts, many of which are forged. There are left half-shafts and right half-shafts distributed on the automobile axle. However, due to the outer diameter of the upper boss The outer diameter of the lower end is Therefore, it is in the shape of a truncated cone. If you use it directly The round bar for forging, catchy It is difficult for the circle to be sufficient or meet the size requirements, and use The round steel is forged. Due to the long length, the billet is easy to bend and form interlayer during the forging process. Currently, it is used by other forging manufacturers. The round steel is cold-extruded, and the outer diameter of the catch is cold-extruded and then forged. In addition, other manufacturers use The round steel turns the lower end into The circle is then forged. This process is indeed feasible, but there are many processes, high cost, long cycle and low efficiency.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The overall hot stamping process of the inner hole and the surrounding small holes of the forging includes the following process steps:

[0018] ①, blanking: blanking with a sawing machine, the specification is The blank is cut according to the length required by the process card, and the length error is controlled at 2mm. If the blank is too long, flashing will easily occur during pre-forging, which will cause forging defects to the subsequent forming. If the blank is too short, the product will be easily filled during the forming process. insufficient.

[0019] ②. Heating: The intermediate frequency furnace is heated to 950°C. The temperature should not be too high or too low. If the temperature is too high, the product will be overheated, and if the temperature is too low, the product will be insufficient;

[0020] ③ Pre-forging: use a 400T friction press for pre-forging, and heat the The round steel is placed in the pre-forging die for pre-forging. The main purp...

Embodiment 2

[0027] The overall hot stamping process of the inner hole and the surrounding small holes of the forging includes the following process steps:

[0028] ①, blanking: select the diameter The round steel is blanked with a sawing machine, and blanked according to the length required by the process card. The length error is 3mm. If the blank is too long, it is easy to produce flash during pre-forging, which will bring forging defects to the subsequent forming. If the blank is too short, it will cause the forming During the process, the product is easy to be insufficient;

[0029] ②. Heating: The intermediate frequency furnace is heated to 1000°C. The temperature should not be too high or too low. If the temperature is too high, the product will be overheated, and if the temperature is too low, the product will fail to forge;

[0030] ③ Pre-forging: use a 400T friction press for pre-forging, and heat the The round steel is put into the pre-forging die for pre-forging, firstly pu...

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PUM

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Abstract

A forging process of a left half axle and a right half axle for an automobile relates to the technical field of forging, and comprises the following steps: blanking, heating, pre-forging, forming, trimming, hardening and tempering and shot-blasting. The forging process has the benefits that the applicant conducts process research and improvement to solve existing problems and determines that the pre-forging method replaces cold-extruding or lathe turning and forming is carried out after pre-forging to meet the process requirements, so that the manufacturing technology is simplified, the production cost is lowered and the production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of forging, in particular to a forging process for left and right axle shafts for automobiles. Background technique [0002] At present, in the automobile industry, there are many kinds of spare parts, many of which are forged. There are left half-shafts and right half-shafts distributed on the automobile axle. However, due to the outer diameter of the upper boss The outer diameter of the lower end is Therefore, it is in the shape of a truncated cone. If you use it directly The round bar for forging, catchy It is difficult for the circle to be sufficient or meet the size requirements, and use The round steel is forged. Due to the long length, the billet is easy to bend and form interlayer during the forging process. Currently, it is used by other forging manufacturers. The round steel is cold-extruded, and the outer diameter of the catch is cold-extruded and then forged. In addition, other manufact...

Claims

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Application Information

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IPC IPC(8): B23P15/00
CPCB23P15/00B60B35/14
Inventor 张锦荣黎成玉汤志清
Owner 安徽众鑫科技股份有限公司
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