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Low-alloy cast steel used for automobile axle housing and long in service life

A low-alloy cast steel, long-life technology, applied in the field of low-alloy cast steel, can solve the problems of difficult to meet the working needs of heavy-duty vehicles, prone to deformation, oil leakage and cracks, etc., achieve scientific and reasonable composition ratio, improve fluidity , good plasticity

Inactive Publication Date: 2016-04-06
ANHUI YUEZHONG AUTO BODY EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitations of its own structure and welding process, the plate welded axle housing is prone to deformation, oil leakage and cracks during use, which is difficult to meet the work needs of heavy vehicles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] A low-alloy cast steel with long service life for automobile axle housings, made of the following raw materials in parts by weight (kg): steel scrap (iron content not less than 98%) 95, Z18 pig iron 2, crystalline silicon 0.4, carbon 0.18, manganese 1.4, nickel 0.28, vanadium 0.08, titanium 0.1, calcium silicide 0.8, polyurethane emulsion 0.2, bauxite 0.5, titanium dioxide 0.35, impurities ≤ 0.01.

[0014] The low-alloy cast steel with long service life for the automobile axle housing is prepared by the following specific steps:

[0015] (1) Heat all the tools and molds at 250°C and take them out for later use; break steel scrap, Z18 pig iron, carbon, and crystalline silicon into small particles, then put them into a ball mill, and put them in the state of argon gas Ball milling for 4 hours to obtain composite powder; put the composite powder into the vacuum induction furnace, heat up and heat until completely melted, then hot-roll, and make a billet after cooling;

[...

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PUM

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Abstract

The invention discloses low-alloy cast steel used for an automobile axle housing and long in service life. The low-alloy cast steel is prepared from, by weight, 95-98 parts of waste steel (the iron content is not smaller than 98%), 2-3 parts of Z18 pig iron, 0.4-0.45 part of crystal silicon, 0.18-0.2 part of carbon, 1.4-1.5 part of manganese, 0.28-0.3 part of nickel, 0.08-0.1 part of vanadium, 0.1-0.12 part of titanium, 0.8-0.86 part of calcium silicide, 0.2-0.24 part of polyurethane emulsion, 0.5-0.54 part of bauxite, 0.35-0.4 part of titanium white and not larger than 0.01 part of impurities. The low-alloy cast steel is scientific and reasonable in component matching, waste steel is adopted, raw material cost is saved, the prepared low-alloy cast steel is durable, the technical problems that the compressive capacity of the middle of an automobile axle housing in the prior art is low, and the service life is short are solved, and the low-alloy cast steel is an ideal automobile axle housing material.

Description

technical field [0001] The invention relates to the technical field of casting materials, in particular to low-alloy cast steel with long service life for automobile axle housings. Background technique [0002] The automobile axle is one of the key parts of the automobile. It is not only a part of the transmission system, but also an important part of the driving system. As the main part of the axle, the automobile axle housing is a key component to ensure the normal operation and service life of the automobile, so it has high requirements for its mechanical strength, stiffness and fatigue resistance. The production cost of the axle housing accounts for about 30% of the total cost of the drive axle. Especially when heavy-duty vehicles are working due to harsh roads and working conditions, the axle housing is subjected to strong impact loads, and the quality requirements for the axle housing are higher. Due to the limitations of its own structure and welding process, the pl...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/08C22C38/12C22C38/14C22C33/04C21C7/06C21D6/00
CPCC21C7/06C21D6/001C21D6/005C21D6/008C22C33/04C22C38/02C22C38/04C22C38/08C22C38/12C22C38/14Y02P10/20
Inventor 杨贤亮
Owner ANHUI YUEZHONG AUTO BODY EQUIP
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