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Method for improving surface friction wear performance by changing surface grain direction

A technology of surface texture and wear performance, applied in the direction of testing wear resistance, preparation of test samples, etc., can solve problems such as unpublished patents

Inactive Publication Date: 2012-02-08
ZHENJIANG YINUOWEI SHAPE MEMORY ALLOYS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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  • Method for improving surface friction wear performance by changing surface grain direction
  • Method for improving surface friction wear performance by changing surface grain direction

Examples

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Embodiment 1

[0009] Planing of No. 45 carbon steel to obtain a wavy surface texture with a roughness of Ra3.2; then a quenching and tempering process is carried out. The workpiece of length 100mm×width 85mm×height 20mm is heated to 840℃ for 2 hours, and then quickly released Into the 10% salt solution for cold quenching to make it completely quenched, and then the workpiece is subjected to high temperature tempering treatment, 560 ℃ for 1.5 hours, the hardness of the obtained No. 45 carbon steel is about 35HRC; finally the treated No. 45 The carbon steel was processed into a test piece with a size of 22 mm in length × 20 mm in width × 4 mm in height. Before the friction and wear test, the surface of the specimen must be wiped with alcohol along the direction of the texture. During the friction and wear process, the surface is lubricated with lubricating oil. During the test, the angle of the specimen is changed with a protractor to realize the texture and the direction of the friction pair. ...

Embodiment 2

[0011] Planing of No. 45 carbon steel to obtain a wavy surface texture with a roughness of Ra3.2; then a quenching and tempering process is carried out. The workpiece of length 100mm×width 85mm×height 20mm is heated to 840℃ for 2 hours, and then quickly released Into the 10% salt solution for cold quenching to make it completely quenched, and then the workpiece is subjected to high temperature tempering treatment, 560 ℃ for 1.5 hours, the hardness of the obtained No. 45 carbon steel is about 35HRC; finally the treated No. 45 The carbon steel is processed into a test piece with a size of 22 mm in length × 20 mm in width × 4 mm in height. Before the friction and wear test, the surface of the test piece must be wiped with alcohol along the direction of the texture. During the friction and wear process, the surface is lubricated with lubricating oil. During the test, the angle of the test piece is changed with a protractor to realize the texture and the direction of movement of the ...

Embodiment 3

[0013] Planing of No. 45 carbon steel to obtain a wavy surface texture with a roughness of Ra3.2; then a quenching and tempering process is carried out. The workpiece of length 100mm×width 85mm×height 20mm is heated to 840℃ for 2 hours, and then quickly released Into the 10% salt solution for cold quenching to make it completely quenched, and then the workpiece is subjected to high temperature tempering treatment, 560 ℃ for 1.5 hours, the hardness of the obtained No. 45 carbon steel is about 35HRC; finally the treated No. 45 The carbon steel is processed into a test piece with a size of 22 mm in length × 20 mm in width × 4 mm in height. Before the friction and wear test, the surface of the test piece must be wiped with alcohol along the direction of the texture. During the friction and wear process, the surface is lubricated with lubricating oil. During the test, the angle of the test piece is changed with a protractor to realize the texture and the direction of movement of the ...

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Abstract

The invention relates to a method for improving the surface friction wear performance by changing the surface grain direction, belonging to the field of surface friction wear performance. The method comprises the following steps of: planning the surface of No.45 carbon steel to obtain the surface with the roughness of Ra3.2; carrying out hardening and tempering treatment, heating a workpiece to 840 DEG C and preserving the temperature for 2h, then fast placing the workpiece to a 10% saline solution for cold quenching, carrying out high-temperature tempering treatment on the workpiece after completely quenching, and preserving the temperature of 560 DEG C for 1.5h to obtain the No.45 carbon steel with the hardness of about 35HRC; finally processing the workpiece to form a specimen with the length 22mm*width 20mm*height 4mm; and then carrying out a friction wear test and setting a 0-90 DEG change between the surface grains of the specimen and the motion direction of a friction pair to respectively obtain a relation between the grain direction and the grinding crack depth as well as a relation between the grain direction and the friction coefficient, wherein the friction wear test is carried out on a multifunctional friction wear tester, and the setting time is 300S.

Description

Technical field [0001] The invention relates to the field of surface friction and wear performance, in particular to a method for improving surface friction and wear performance by changing the direction of surface texture. Background technique [0002] With the development of mechanical equipment in the direction of high speed, high precision and heavy load, people put forward higher and higher requirements for the surface quality of mechanical parts. Because improving the surface texture of mechanical processing can improve the wear resistance, reliability and service life of mechanical parts, and accurately evaluating and characterizing the surface texture is its premise and basis. Correctly stipulating and controlling the surface texture, its role is often not Inferior to the adoption of a new material and new structure, which has great economic value. Due to the different surface textures, the contact between two objects is always discontinuous. Surface texture is of great ...

Claims

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Application Information

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IPC IPC(8): G01N3/56G01N1/28
Inventor 王怀庆司松海司乃潮杨道清刘光磊
Owner ZHENJIANG YINUOWEI SHAPE MEMORY ALLOYS
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