Paper Title:

Study on Bit Body Materials Made of Tungsten Carbide and Steel Shot

Periodical Key Engineering Materials (Volume 487)
Main Theme Advances in Grinding and Abrasive Technology XVI
Edited by Feng Zhu, Xipeng Xu and Renke Kang
Pages 381-385
DOI 10.4028/www.scientific.net/KEM.487.381
Citation J.L. Peng et al., 2011, Key Engineering Materials, 487, 381
Online since July, 2011
Authors J.L. Peng, Long Chen Duan, Hao Shi, Shao Lin Xu
Keywords Diamond Bit Body, Erosion Resistance, Glue-Included Tungsten Carbide, Steel Shot
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Abstract

This paper introduces a new kind of diamond bit body material. The characteristics of this material are as follows: the outer bit body cast with tungsten-carbide and the inside is steel shot. So the bit body has got high wear resistance on the outside and good mechanical properties inside at the same time. The mechanical properties inside and the wear resistance outside of the bit were tested. The paper also introduces how to apply a film of mixture of glue-included tungsten-carbide on the surface of the bit mold and graphite stick. The improvements of mechanical properties inside and maintenance of wear resistance outside have made much choice to design wider and deeper junk slots. Thus the performance of bit has been improved.