Alloy material, valve retainer, and preparation method and installation method thereof

A technology for valve seat rings and alloy materials, which is applied in the direction of valve devices, mechanical equipment, valve lifts, etc., can solve the problems of poor corrosion resistance and wear resistance, achieve excellent wear resistance and corrosion resistance, and ensure wear resistance properties, improving self-lubricating performance and processing performance

Active Publication Date: 2013-03-27
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of poor corrosion resistance and wear resistance of existing alloy materials, and to provide an alloy material with excellent corrosion resistance and wear resistance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] This embodiment provides an alloy material, and the formula of the alloy material is shown in Table 1.

[0039] Preferably, the above-mentioned alloy materials are used in the manufacture of valve seat rings. Of course, it is not limited to the intake and exhaust valve seat rings, and can also be applied to other places with severe corrosion and wear, such as timing gears.

[0040] Adding alloy particles Cr, Mo, Co (Cr-Mo-Co hard particles) to the alloy material can effectively inhibit the initial wear between metals, ensure the wear resistance and thermal stability of the alloy material, and supplement it with MnS ( The combination of S and Mn) can improve the self-lubricating properties and processing properties of alloy materials.

[0041] Preferably, the alloy material of the above formula is prepared through the process of weighing-mixing-pressing-sintering-cold treatment-heat treatment-post-treatment to prepare the valve seat ring. Wherein, weighing, mixing and ...

Embodiment 2

[0054] This embodiment provides an alloy material, and the formula of the alloy material is shown in Table 1.

[0055] Preferably, the above-mentioned alloy materials are used in the manufacture of valve seat rings. Of course, it is not limited to the intake and exhaust valve seat rings, and can also be applied to other places with severe corrosion and wear, such as timing gears.

[0056] Adding alloy particles Cr, Mo, Co (Cr-Mo-Co hard particles) to the alloy material can effectively inhibit the initial wear between metals, ensure the wear resistance and thermal stability of the alloy material, and supplement it with MnS ( The combination of S and Mn) can improve the self-lubricating properties and processing properties of alloy materials.

[0057] Preferably, the alloy material of the above formula is prepared through the process of weighing-mixing-pressing-sintering-cold treatment-heat treatment-post-treatment to prepare the valve seat ring. Wherein, weighing, mixing and ...

Embodiment 3

[0065] This embodiment provides an alloy material, and the formula of the alloy material is shown in Table 1.

[0066] Preferably, the above-mentioned alloy materials are used in the manufacture of valve seat rings. Of course, it is not limited to the intake and exhaust valve seat rings, and can also be applied to other places with severe corrosion and wear, such as timing gears.

[0067] Adding alloy particles Cr, Mo, Co (Cr-Mo-Co hard particles) to the alloy material can effectively inhibit the initial wear between metals, ensure the wear resistance and thermal stability of the alloy material, and supplement it with MnS ( The combination of S and Mn) can improve the self-lubricating properties and processing properties of alloy materials.

[0068] Preferably, the green body of the sintered valve seat ring can also be cold-treated by a freezer and heat-treated by annealing to improve the structure and comprehensive performance of the seat ring.

[0069] Preferably, the abov...

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Abstract

The invention provides an alloy material, a valve retainer prepared from the alloy material, and a preparation method and an installation method of the valve retainer, and belongs to the technical field of auto spare parts. The invention can solve problems of weak corrosion resistance and abrasion resistance of an existing alloy material and a valve retainer prepared from the alloy material in an alcohol fuel engine. The invention improves formula of the alloy material, the preparation process and installation method of the valve retainer. The valve retainer provided by the invention has excellent wear resistance and corrosion resistance, and improved machinability, tensile strength and yield strength.

Description

technical field [0001] The invention belongs to the technical field of engine accessories, and in particular relates to an alloy material, a valve seat ring prepared from the alloy material, a preparation method of the valve seat ring and an installation method of the valve seat ring. Background technique [0002] Ethanol is a clean and renewable energy source. Some ethanol is added to gasoline used in the domestic market, and the consumption of ethanol fuel in the international market, especially the Brazilian market, is huge. Therefore, ethanol-fueled engines have great potential in the international market. [0003] Due to the high ethanol content in ethanol fuel in some areas, for example, the ethanol content in ethanol fuel in Brazil is high, up to 100%. The ring contact surface increases, and there is no oil mist lubrication between the valve and the seat ring, the lubrication condition is harsh, and the corrosion and wear are intensified. Ethanol fuel has higher requ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/60B22F3/16B22F5/10F01L3/02
Inventor 刘吉慕金华谢小祥
Owner CHERY AUTOMOBILE CO LTD
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