Manufacture and Grinding Performance of a Polyimide Resin-Bonded cBN Wheel for Precision Grinding of Ferrous Materials

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Abstract:

A polyimide resin-bonded cubic boron nitride (cBN) wheel was designed and manufactured for precision grinding ferrous materials. Firstly, the curing reaction of the resin, which including chain and cross-linking polymerization stages with the exothermic peaks of 140°C and 235°C, respectively, was analyzed by DSC-TG. Based on thermal analysis, a hot press forming process and a post thermal treatment were employed for manufacturing the wheel. Grinding experiment results showed that the transient normal grinding forces vary from 9 to 12 N and fluctuate slightly with 1~2 N when grinding hardened steel 45#. The grinding ratio of 775 and the surface roughness of 0.19 μm were obtained.

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443-448

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March 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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