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Seamless steel tube used for automobile axle shaft sleeve and production method thereof

A technology of automobile half shaft and seamless steel pipe, which is applied in the field of half shaft casing processing, and can solve the problems of low production efficiency of traditional processes

Inactive Publication Date: 2019-03-29
LINZHOU FENGBAO PIPE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a seamless steel pipe for automobile half shaft sleeve and its production method, which can solve the problem of low production efficiency of traditional technology

Method used

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  • Seamless steel tube used for automobile axle shaft sleeve and production method thereof
  • Seamless steel tube used for automobile axle shaft sleeve and production method thereof
  • Seamless steel tube used for automobile axle shaft sleeve and production method thereof

Examples

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Embodiment 1

[0029] A seamless steel pipe for automobile half-axle sleeves, calculated by weight percentage, comprising the following components:

[0030] C, 0.42%, Si, 0.17%, Mn, 1.40%, P, 0.030%, S, 0.030%, Cr, 0.25%, Mo, 0.10%, C, 0.20%, Ni, 0.30%.

Embodiment 2

[0032] A seamless steel pipe for automobile half-axle sleeves, calculated by weight percentage, comprising the following components:

[0033] C, 0.43%, Si, 0.177%, Mn, 1.60%, P, 0.020%, S, 0.010%, Cr, 0.10%, Mo, 0.10%, Cu, 0.20%, Ni, 0.20%.

Embodiment 3

[0035] A seamless steel pipe for automobile half-axle sleeves, calculated by weight percentage, comprising the following components:

[0036] C, 0.45%, Si, 0.27%, Mn, 1.7%, P, 0.010%, %, S, 0.005%, Cr, 0.15, Mo, 0.02%, Cu, 0.05%, Ni, 0.06%.

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Abstract

The invention relates to the field of machining of axle shaft sleeves, in particular to a seamless steel tube used for an automobile axle shaft sleeve and a production method thereof. The seamless steel tube comprises the following components including, by weight, 0.42-0.49% of C, 0.17-0.37% of Si, 1.40-1.80% of Mn, not greater than 0.030% of P, not greater than 0.030% of S, no greater than 0.25%of Cr, not greater than 0.10% of Mo, not greater than 0.20% of Cu and not greater than 0.30% of Ni. Thus, according to applied characteristics of the automobile axle shaft sleeve, besides having highrequirements for geometric dimensioning, the automobile axle shaft sleeve should further have certain hardness, abrasion resistance and high fatigue performance, and therefore, requirements for the general mechanical performance of the steel tube are high; to make steel have the performance, the strength, hardness, tenacity and abrasion resistance are improved by reducing the content of C, increasing the content of Mn and adding Cr; and meanwhile, by reducing the contents of the P and S, the steel purity degree is increased, hot shortness and cold shortness of the steel are reduced, and the plasticity and tenacity of the steel are improved. Compared with the prior art, the seamless steel tube and the production method thereof have the advantage that the steel tube hardness uniformity is guaranteed by optimizing and adjusting the chemical components of the automobile axle shaft sleeve.

Description

technical field [0001] The invention relates to the field of half-shaft casing processing, in particular to a seamless steel pipe for automobile half-shaft casings and a production method thereof. Background technique [0002] At present, the seamless steel pipe is a round or special-shaped steel with a hollow section and no welds on the circumference. It is widely used as a fluid pipe or structural part. Compared with solid steel, the weight of the steel pipe with the same bending and torsional strength will be more Light, is an economical section steel. [0003] The automobile half shaft sleeve is a kind of seamless steel pipe, which is used for the wheel side support at both ends of the automobile drive axle. It not only bears the weight of the entire vehicle body, but also bears the effects of various complex alternating stresses during the operation of the automobile. Therefore, the automobile half-axle sleeve has extremely high requirements on the strength, rigidity a...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/58C22C38/44C22C38/42B21C37/06
CPCB21C37/06C22C38/002C22C38/02C22C38/04C22C38/42C22C38/44C22C38/58
Inventor 肖永忠向鹏曹铜壁王英林薛永财
Owner LINZHOU FENGBAO PIPE