Experimental Study on the Texture of Interference Fit Interface for Remanufacturing of Low Disassembly Damage Demand

doi:10.3901/JME.2018.21.166

Abstract

Abstract: In the process of disassembly on the interference fit interface, it's easy to form scratch, furrow or adhesion of dry friction damage, increasing the cost of repair. In order to reduce the interfacial damage, the surface texture is added to the mating surface. The effect of the texture of the circular pits on the interfacial damage is studied by using KMN and 40CrNiMo7 as materials. It is found that the number of free abrasive particles on the sliding surface is reduced due to the existence of texture, and the interfacial disassembly damage is significantly reduced. The experiment shows that the texture can effectively improve the bearing capacity of the mating surface. The static friction coefficient of textured surface is increased by about 0.1 compared with that without texture within the pressure range of 50~200 MPa. However, the micro scratch formed by the disassembly destroys the annular melting zone around the texture, and makes it decrease with the increase of the number of disassembly. After two times of remanufacturing disassembly experiment, the static friction coefficient of texture surface is only higher than that without texture surface 0.01~0.03.

Key words: bearing capacity, disassembly damage, interface texture, interference fit, remanufacturing

CLC Number:

TH11

ZHOU Dan, GAO Xin, YI Lixiang, LIU Guangfu. Experimental Study on the Texture of Interference Fit Interface for Remanufacturing of Low Disassembly Damage Demand[J]. Journal of Mechanical Engineering, 2018, 54(21): 166-172.

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