The purpose of this paper is to study the effect of copper-coated graphite on the performance of copper-based metal bond grinding wheels.The copper-coated graphite and ordinary graphite were uniformly mixed according to the proportion designed in the re-search plan,and the matrix test strips were made by hot pressing sintering,and the met-al-bonded superhard material grinding wheel was made by adding superhard abrasive in the mixed powder.The hardness,flexural strength,fracture morphology,and cutting performance of metal-bonded superhard material grinding wheels were tested and studied using equipment such as hardness tester,electronic universal testing machine,scanning e-lectron microscope,and scoring machine.Through the analysis of the above results,the effect of different copper-coated graphite contents on the performance of metal-bonded matrix and superhard material grinding wheels had been revealed.The test data shows that the addition of copper plated graphite is beneficial for improving the hardness and flexural strength of the metal-bonded matrix,with a maximum increase of 8.4％and 25.5％;On the other hand,it increases the wear resistance of superhard material grinding wheels,increased it by 60％under the same test conditions.
关键词
镀铜石墨/铜基金属结合剂/硬度/抗折强度/磨耗
Key words
copper-coated graphite/copper-based metal binder/hardness/flexural strength/wear resistance
维普
万方数据