金刚石与磨料磨具工程2018，Vol.38Issue(2)：20-25,6.DOI:10.13394/j.cnki.jgszz.2018.2.0005
金属结合剂金刚石砂轮中铝基结合剂性能优化研究
Performance optimization of Al-based bond matrix in metallic bond diamond wheel
摘要
Abstract
Commonly used alloying elements,namely Cu,Zn,Mg and Mn,were selected to strengthen aluminum with AlSi20as the main component.The factors,each with three levels,were marked as A, B,C and D,respectively.The L9(34)orthogonal test scheme was developed.Al-based bonding matrix was prepared by hot pressing sintering.The effects of alloying elements on the properties of the matrix were studied by means of Archimedes drainage method,rockwell hardness test,three-point bending strength test and scanning electron microscope.Results show that the addition of alloy elements reduces the sintering temperature of AlSi20and promotes the densification of sintering.The influence of alloy elements on hardness is Mn>Zn>Cu>Mg.The influence of bending strength is Cu>Mn>Zn>Mg.In conclusion,the combination of A1B2C2D2and A1B3C3D3have high hardness and bending strength,whose matrices are closely tied to diamond.The fracture mode of binding agent is brittle fracture,which can improve the self-dressing ability of diamond grinding wheel.关键词
金刚石砂轮/铝基结合剂/脆性断裂/自锐性Key words
diamond grinding wheel/Al-based bonding matrix/brittle fracture/self-dressing ability分类
矿业与冶金引用本文复制引用
陈克鑫,刘一波,曹彩婷,刘伟..金属结合剂金刚石砂轮中铝基结合剂性能优化研究[J].金刚石与磨料磨具工程,2018,38(2):20-25,6.基金项目
北京市科委超硬材料制品工程技术研究中心2013年度科技创新基地培育与发展工程专项:"钨钼靶材用高性能金刚石砂轮技术开发". （）
