Study on the Grind-Hardening of the Loader Clevis Pin

On the basis of the cylindrical plunge grinding and intermittent axial feed grinding experiment, the grind-hardened layer structure and its property of the loader clevis pin were studied. The result shows that there are some arc shape medium/high-temperature tempered zones and some annular unhardene...

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Bibliographic Details
Published in:Key engineering materials 2014-08, Vol.621, p.140-145
Main Authors: Liu, Ju Dong, Zhuang, Jie Zhen, Xu, Zhi Long
Format: Article
Language:English
Subjects:
Circumferences
Clevis
Control
Hardening
Loaders
Microhardness
Microstructure
Plunge grinding
Troostite
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Summary:On the basis of the cylindrical plunge grinding and intermittent axial feed grinding experiment, the grind-hardened layer structure and its property of the loader clevis pin were studied. The result shows that there are some arc shape medium/high-temperature tempered zones and some annular unhardened zone in external circumference surface, which is result of temperature gradient, induced grinding heat when circumferential feed and axial grinding heat conduction. The microstructure of hardened zone is mixture martensite, and the microstructure of tempered zone is tempered martensite and troostite. Different structure zone has same microhardness distribution regulation, but the microhardness of hardened zone can reach 640HV0.5. The loader clevis pin processed by grind-hardening meets the property request for working.
ISSN:1013-9826
1662-9795
1662-9795
DOI:10.4028/www.scientific.net/KEM.621.140