树脂结合剂超硬磨料砂轮磨削稳定性试验研究  

Experimental Study on Grinding Stability of Superabrasive Grinding Wheel for Resin Bond

作　　者：冯克明 邢波 师超钰 朱建辉 赵金坠 FENG Ke-ming;XING Bo;SHI Chao-yu;ZHU Jian-hui;ZHAO Jin-zhui(State Key Laboratory of Superabrasive,Zhengzhou Research Institute for Abrasive ＆ Grinding Co.,Ltd.,Zhengzhou 450001,Henan,China)

机构地区：[1]郑州磨料磨具磨削研究所有限公司超硬材料磨具国家重点实验室,河南郑州450001

出　　处：《兵工学报》2018年第7期1389-1396,共8页Acta Armamentarii

基　　金：国家自然科学基金项目(U1604254);国家科技支撑计划项目(2015BAF31B00)

摘　　要：针对树脂结合剂超硬磨具在应用方面普遍存在的磨削性能稳定性差等工程技术问题,选取不同树脂原材料、树脂置空时间、磨料层径向位置3个关键因素作为研究对象,开展了树脂金刚石砂轮平面磨削硬质合金试验。结果表明:酚醛树脂原材料对砂轮磨削性能有较大影响,普通型树脂不适于硬质合金磨削、耐热型树脂适于大切深磨削、增韧型树脂适于小切深精密磨削;树脂置空时间对砂轮磨削性能有一定影响,随着树脂置空时间延长,磨削比缓慢下降;砂轮磨料层径向位置对磨削性能影响较特殊,当磨料层在1.0 mm以上时磨削比变化不大,当磨料层在1.0 mm以下时磨削比出现明显下降。树脂超硬磨料砂轮制成工艺及磨削应用技术的细化有利于改善砂轮磨削性能的稳定。Three key influencing factors of different resin raw materials,setting time of resin and radial position of abrasive layer are investigated for the poor stability of grinding properties of superhard resin bonding abrasives,and a resin diamond grinding wheel is used to grind a cemented carbide in test. The results show that the phenolic resin raw materials have a great influence on the grinding performance of grinding wheel,the ordinary resin is not suitable for carbide grinding,the heat-resistant resin is suitable for deep grinding,and the toughening resin is suitable for micro-depth cut grinding. The store time of phenolic resin has a certain influence on grinding performance,the grinding ratio decreases slowly with the extending of store time; and the radial position of abrasive layer has a special effect on the grinding performance. When the abrasive layer is above 1. 0 mm in thickness,the grinding ratio changes little;when the abrasive layer is below 1. 0 mm in thickness,the grinding ratio decreases obviously. Refining of making and grinding technologies of super-hard resin grinding wheel is beneficial to improve the stability of grinding performance.

关 键 词：树脂金刚石砂轮 硬质合金 磨削稳定性 磨削比 

分 类 号：TG743[金属学及工艺—刀具与模具]