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Graphite-doped tough and self-lubricating automobile part cast steel material

A self-lubricating technology for auto parts, applied in the field of casting materials, can solve problems such as oil leakage and cracks, easy deformation, and difficulty in meeting the work needs of heavy-duty vehicles, and achieve good plasticity, good wear reduction, and good low-temperature toughness Effect

Inactive Publication Date: 2016-10-05
ANHUI YUEZHONG AUTO BODY EQUIP
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  • Summary
  • 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
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Effect test

Embodiment Construction

[0013] A tough self-lubricating cast steel material for auto parts doped with graphite, 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, graphite 4, Selenium 0.5, tungsten 0.1, manganese 1.7, chromium 1.4, calcium silicide 0.8, fiber pulp 0.8, electroslag pre-slag 0.7, fluorite powder 0.3, impurities ≤ 0.01.

[0014] The tough self-lubricating auto parts cast steel material doped with graphite 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, graphite, and crystalline silicon into small particles, put them into a ball mill, and put them in the state of argon 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;

[0016]...

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PUM

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Abstract

The invention discloses a graphite-doped touch and self-lubricating automobile part cast steel material. The cast steel material is prepared from, by weight, 95-98 parts of waste steel (the content of iron is not smaller than 98%), 2-3 parts of Z18 pig iron, 0.4-0.45 part of crystalline silicon, 4-4.5 parts of graphite, 0.5-0.6 part of selenium , 0.1-0.12 part of tungsten, 1.7-2 part of manganese, 1.4-1.6 parts of chromium, 0.8-0.86 part of calcium silicide , 0.8-0.9 part of fiber pulp, 0.7-0.75 part of electroslag premelted slag, 0.3-0.33 part of fluorite powder and smaller than or equal to 0.01 part of impurities. By means of the cast steel material, the components such as graphite and selenium are added in the casting and smelting process so that lubricating systems can be formed in the cast steel material; due to the fact that a composite deoxidizing agent is added, the lubricating systems are evenly distributed in a base body; and the cast steel material has the beneficial effects of being good in antifriction performance, not likely to be abraded, high in strength, good in toughness, wide in application range and the like and is very suitable for being manufactured into various automobile parts, abrasion is not likely to happen because of lubrication, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of casting materials, in particular to a graphite-doped tough self-lubricating cast steel material for auto parts. 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 ...

Claims

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Application Information

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IPC IPC(8): C22C33/04C21C5/52
CPCC21C5/5241C22C33/006C22C33/04Y02P10/20
Inventor 杨贤亮
Owner ANHUI YUEZHONG AUTO BODY EQUIP
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