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Meng Fanzhong
Chain Transmission Institute,
Jilin University,
Changchun 130025, China
Wang Shukun
College of Mechanical Science
and Engineering,
Jilin University,
Changchun 130025, China
Lan Hong
Chain
Transmission Institute,
Jilin University,
Changchun 130025, China
Xu Rongjin
Xu Hanxue
Huzhou Qiujing Automobile Chain
Drive Co., Ltd,
Huzhou 313012, China |
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WEAR FAILURE
MECHANISM AND
MULTI-IMPACT PROPERTY OF
AUTOMOTIVE ENGINE CHAIN*
Abstract:
The multi-impact characteristics and failure mechanism of two kinds of automotive engine chain made in China are studied through engine assembly and road-drive tests. The worn surface morphologies of rubbing area between pin, bush and roller are also analyzed based on scanning electron microscope. The results show that the main wear mechanism of automotive engine chain is fatigue wear, and its failure mechanism is the forming, extending and flaking of cracks on top layer of pin and bush. In addition, the material, hot-treatment method and shaping technique for roller have a great influence upon the resistance to multi-impact. Ensuring sufficient strength and plasticity of roller, as well as adopting suitable shaping technique are the effective method to increase its resistance to multi-impact.
Key words:
Automotive engine chain Wear mechanism Cold-extruding roller Resistance to multi-impact Cycle performance
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