Fatigue-resistant material used for automobile gear

An automotive gear and fatigue-resistant technology, applied in the field of auto parts, can solve the problems of dispersion and density value that cannot be solved at the same time, limit the large-scale development of the steel industry, and the quality stability is not high, so as to achieve high strength and prevent Good effect on oxidation, fatigue resistance and toughness

Inactive Publication Date: 2016-08-10
ANHUI HEKUANG MACHINERY
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AI Technical Summary

Problems solved by technology

Although he provided a kind of niobium carbide composite powder with a density value close to molten steel and a kind of niobium carbide composite powder with good dispersion in molten steel, the problems of dispersibility and density value in the steelmaking process cannot be solved at the same time, which limits the steel industry. Large-scale development, and aluminum powder is prone to oxidation, and the quality stability is not high when preparing aluminum-doped niobium carbide

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] A kind of anti-fatigue material for automobile gear is prepared according to the following steps:

[0014] a. Melting: Add low-sulfur phosphorus clean scrap steel into high-frequency induction melting furnace to melt into molten steel, then add recarburizer, wait for the temperature in the furnace to rise to 1500°C, add pig iron, ferrosilicon and ferromanganese, keep warm for 20 minutes and then add After copper, nickel, titanium and strontium are completely melted, add modified niobium carbide, raise the temperature to 1630°C, keep stirring at constant temperature for 5 minutes to obtain matrix alloy liquid;

[0015] b. Detection: Detect the component content of the matrix alloy liquid, add materials to make the elements by weight percentage: carbon: 0.5%, silicon: 2.1%, manganese: 1.3%, copper: 0.6%, nickel: 1.2%, aluminum : 0.001%, titanium 0.1%, strontium: 0.01%, sulfur ≤ 0.015%, phosphorus ≤ 0.015%, the balance is iron and unavoidable impurities;

[0016] c. Pouri...

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Abstract

The invention discloses a fatigue-resistant material used for an automobile gear. The material is prepared from the following elements in weight percent: 0.5-0.6% of carbon, 2.1-2.3% of silicon, 1.3-1.5% of manganese, 0.6-0.8% of copper, 1.2-1.4% of nickel, 0.001-0.02% of aluminium, 0.1-0.2% of titanium, 0.01-0.03% of strontium, less than or equal to 0.015% of sulfur, less than or equal to 0.015% of phosphorus, and the balance of iron and unavoidable impurities. The fatigue-resistant material effectively realizes improvement of comprehensive performances of alloy steel materials, can meet the requirements of modern technological development for high load, fatigue resistance and good toughness of alloy steel materials, and has the characteristics of being high in safety and long in service life when being used for automobile gears.

Description

technical field [0001] The invention relates to the technical field of automobile parts, in particular to a fatigue-resistant material for automobile gears. Background technique [0002] Iron and steel materials occupy an important position in the mechanical engineering manufacturing industry due to their high strength and good toughness. In recent years, mechanical engineering structures have increasingly developed in the direction of giantization and high parameters, and higher and higher requirements have been put forward for the performance of steel materials. , the addition of particles to strengthen steel materials has many advantages, but it is often at the expense of reducing plasticity and toughness on the premise of increasing strength and hardness. In the article "Preparation Technology and Application of Nano-NbC / Fe(Fe3C) Composite Powder for Iron-Based Materials Strengthened by Adding Particles", Qin Sen chose NbC as the strengthening phase particle, and added i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/06C22C38/02C22C38/04C22C38/08C22C38/16C22C38/14C22C38/06C21C7/06C21C7/064
CPCC21C7/0037C21C7/06C21C7/064C22C33/06C22C38/002C22C38/02C22C38/04C22C38/06C22C38/08C22C38/14C22C38/16Y02P10/20
Inventor 胡乾桂
Owner ANHUI HEKUANG MACHINERY
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