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Automobile axle material

A technology for axles and automobiles, applied in the field of automobile axle materials, can solve the problems of insufficient fatigue resistance, insufficient surface hardness, and low strength of steel pipes, etc., and achieve good comprehensive mechanical properties, good cutting performance, and good fatigue resistance. Effect

Inactive Publication Date: 2016-09-07
ANQING JIAN AUTO PART FORGING & ROLLING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of materials and processes in traditional axles, the strength of the steel pipe is not high, the surface hardness is not enough, the impact toughness is poor, and the fatigue resistance cannot meet the requirements
The shaft material of high-power and high-speed engine is mostly copper-lead alloy sliding bearing material, which has a high lead content, and the electroplated anti-friction layer of lead will cause environmental pollution

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1, an automobile axle material, containing C: 0.25%-0.35%, Si: 0.2-0.5%, Mn: 0.5-0.8%, Cr0.6%-1.2%, Mo: 0.40-0.60% by weight %, V: 0.15-0.25%, S: 0.001-0.030%, Al: 0.1-0.5%, Cu0.25-0.55%, Ti: 0.6%-1.2%, Ni: 0.05-0.2%, V0.03-0.06 %, Ca 0.02% to 0.05%, and the remainder includes Fe and unavoidable impurities; and the following elements are limited: P: 0.05% or less, O: 0.06% or less.

[0015] A preparation method for automobile axle material, smelting: smelting in an electric arc furnace, ingredients are molten iron with a weight percentage greater than or equal to 40% and scrap steel with a weight percentage of 40% to 60%, and the control endpoint C≥0.25%, P≤0.020% , the content of residual elements meets the design requirements, and the tapping temperature of molten steel is 1600 ° C ~ 1650 ° C, among which, pre-deoxidation alloying is carried out in the ladle, and Al is added during the tapping process; then, LF refining is carried out outside the furnace, a...

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PUM

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Abstract

The invention discloses an automobile axle material. The automobile axle material comprises, by weight, 0.25%-0.35% of C, 0.2%-0.5% of Si, 0.5%-0.8% of Mn, 06%-1.2% of Cr, 0.40%-0.60% of Mo, 015%-0.25% of V, 0.001%-0.030% of S, 0.1%-0.5% of Al, 0.25%-0.55% of Cu, 0.6%-1.2% of Ti, 0.05%-0.2% of Ni and the balance Fe and inevitable impurities. In addition, the weight percentage of P is limited below 0.05%, and the weight percentage of O is limited below 0.06%. An axle steel pipe prepared from the material is high in strength and surface hardness, good in impact toughness, excellent in anti-fatigue performance; and steel has excellent hardenability and good comprehensive mechanical performance, and the surface hardness of a nitride layer of the steel is 1000 HV or over.

Description

technical field [0001] The invention relates to the technical field of production and processing of axle parts, in particular to an automobile axle material. Background technique [0002] With the rapid development of my country's economy, the automobile industry is developing rapidly. And with the development of automobile technology, the requirements for various spare parts of automobiles are also getting higher and higher. As an important part of automobile transmission, automobile axles are in great demand and have high requirements. However, due to the limitations of materials and processes in traditional axles, the strength of the steel pipe is not high, the surface hardness is not enough, the impact toughness is poor, and the fatigue resistance cannot meet the requirements. Most of the high-power and high-speed engine shaft materials are copper-lead alloy sliding bearing materials, which contain a high amount of lead, and the electroplated anti-friction layer of lea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/18C22C38/14C22C38/04C22C38/02C22C38/12C22C38/06C22C38/16C22C38/08C22C33/04C21D8/00
CPCC22C38/18C21D8/005C22C33/04C22C38/002C22C38/02C22C38/04C22C38/06C22C38/08C22C38/12C22C38/14C22C38/16
Inventor 査凌宇
Owner ANQING JIAN AUTO PART FORGING & ROLLING
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