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Automobile semi-axle forging and stamping die

A technology of automobile half shaft and forging, which is applied in the direction of forging/pressing/hammer device, forging/pressing/hammering machinery, manufacturing tools, etc. Fatigue cracks and other problems, to achieve long service life, reduce thermal sensitivity, and uniform structure

Inactive Publication Date: 2017-04-26
LIUZHOU TONGWEI MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under such harsh service conditions, the mold often has thermal fatigue cracks and is scrapped, and the service life is very low.
[0004] Automobile semi-axis forging dies are usually produced by casting. The uniformity of the die structure is poor, the tensile properties and impact toughness are low, the die loss is large during the production process, the product yield is low, and the production efficiency is not high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Automobile semi-axis forging molds are smelted from the following materials in parts by weight: 90 parts of 45 steel, 0.8 parts of ferrosilicon, 0.6 parts of ferro-vanadium, 5 parts of tungsten carbide powder, 0.6 parts of medium-carbon ferromanganese, and 0.05 parts of low-carbon ferrochrome share.

[0043] The silicon content of the ferrosilicon is 80%.

[0044] The vanadium content of the ferrovanadium is 60%.

[0045] The manganese content of the medium carbon ferromanganese is 80%.

[0046] The chromium content of the low-carbon ferrochrome is 75%.

Embodiment 2

[0048] Automobile semi-axis forging molds are smelted from the following materials in parts by weight: 110 parts of 45 steel, 1.5 parts of ferrosilicon, 1.2 parts of ferro-vanadium, 10 parts of tungsten carbide powder, 1 part of medium-carbon ferromanganese, and 0.1 parts of low-carbon ferrochrome share.

[0049] The silicon content of the ferrosilicon is 74%.

[0050] The vanadium content of the ferrovanadium is 50%.

[0051] The manganese content of the medium carbon ferromanganese is 75%.

[0052] The chromium content of the low-carbon ferrochrome is 63%.

Embodiment 3

[0054] Automobile semi-axis forging molds are smelted from the following materials in parts by weight: 95 parts of 45 steel, 1.1 parts of ferrosilicon, 0.8 parts of ferro-vanadium, 6 parts of tungsten carbide powder, 0.7 parts of medium-carbon ferromanganese, and 0.07 parts of low-carbon ferrochrome share.

[0055] The silicon content of the ferrosilicon is 76%.

[0056] The vanadium content of the ferrovanadium is 55%.

[0057] The manganese content of the medium carbon ferromanganese is 78%.

[0058] The chromium content of the low-carbon ferrochrome is 70%.

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PUM

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Abstract

The invention relates to a forging and stamping die, in particular to an automobile semi-axle forging and stamping die. The automobile semi-axle forging and stamping die is formed by smelting following materials including, by weight, 90-110 parts of 45# steel, 0.8-1.5 parts of silicon iron, 0.6-1.2 parts of ferrovanadium, 5-10 parts of tungsten carbide powder, 0.6-1 part of mid-carbon ferromanganese and 0.05-0.1 part of low-carbon ferrochromium. The automobile semi-axle forging and stamping die provided by the invention is good in material matching and casting density, even in structure, high in strength, resistant to high temperature and long in service life.

Description

technical field [0001] The invention relates to a forging die, in particular to a forging die for an automobile half shaft. Background technique [0002] The automobile half shaft is the main part of the rear axle of the automobile. During the operation of the automobile, the half bearing is subjected to various complex alternating stresses such as the weight of the entire body and cargo and the transmission torque. At present, when producing automobile half shafts, the workpiece is usually forged by using automobile half shaft forging dies. [0003] The stress of the automobile semi-axis forging die: it bears both compressive stress and bending stress, and also bears a certain tensile stress when demolding. Since the die is in contact with the hot blank, it needs water cooling, so it bears thermal fatigue and thermal stress caused by cold and hot stress. scour. Under such harsh service conditions, the mold often has thermal fatigue cracks and is scrapped, and the service ...

Claims

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Application Information

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IPC IPC(8): C22C33/06C21D1/18B21J13/02
CPCB21J13/02C21D1/18C21D2211/001C21D2211/002C21D2211/008C22C33/006C22C33/06
Inventor 袁玮骏黄名兴唐绍淼罗丙球
Owner LIUZHOU TONGWEI MACHINERY
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