3C陶瓷用钎焊金刚石小磨头的端面磨损  

End face wear of small brazed diamond grinding head for 3C ceramics

作　　者：周渝 黄国钦 ZHOU Yu;HUANG Guoqin(Institution of Manufacturing Engineering,Huaqiao University,Xiamen 361021,Fujian,China)

机构地区：[1]华侨大学制造工程研究院,福建厦门361021

出　　处：《金刚石与磨料磨具工程》2022年第5期595-601,共7页Diamond & Abrasives Engineering

基　　金：国家自然科学基金(51975221)。

摘　　要：金刚石微铣磨头广泛用于3C产品的先进陶瓷构件加工中。通过对3C产品中最常用的氧化锆陶瓷工件进行磨削试验,观察钎焊金刚石微铣磨头磨损过程中的形貌演变,并统计氧化锆陶瓷的累计去除体积与磨头上金刚石磨粒磨损数量的对应关系,对比分析铜基和镍基钎料金刚石微铣磨头的磨损失效情况及寿命。结果表明:在相同加工参数条件下,铜基磨头的寿命较长,是镍基磨头寿命的1.2倍;在磨削过程中,金刚石磨头端面的磨粒存在破碎、磨平、脱落3种主要失效形式,且磨头的磨损主要从磨头端面边缘开始,逐步向其中心扩散,直至磨粒磨损严重而导致磨头失效。The diamond micro-milling head is widely used in the processing of advanced ceramic components of 3C products. Through the grinding tests on the zirconia ceramic workpiece most commonly used in 3C products, the morphology evolution of the brazed diamond micro milling head was observed, and the corresponding relationship between the accumulated removal volume of zirconia ceramics and the wear amount of diamond abrasive grains on the grinding head was counted. The wear failure and the service life of the copper-based and the nickel-based brazed diamond micro milling heads were compared and analyzed. The results show that under the same processing parameters, the life of the copper-based grinding head is longer, which is 1.2 times that of the nickel-based grinding head. In the process of grinding, there are three main failure modes of grinding particles on the end face of diamond grinding head: crushing, flattening and falling off. The wear of grinding head mainly starts from the edge of the end face of the grinding head and gradually spreads to the center until the abrasive wear is serious and the grinding head fails.

关 键 词：金刚石 钎焊 微铣磨头 氧化锆陶瓷 磨损失效 

分 类 号：TG74[金属学及工艺—刀具与模具] TG58