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随着我国工业生产的迅速发展,硬质合金的研究、生产和使用亦不断增多,尤其在机械制造部门例如金属切削加工中,硬质合金占着一定的地位。作为生产和使用硬质合金的部门,怎样制断其质量好坏,以便加以合理应用,这是一个比较重要的问题,因此必须对硬质合金进行检验工作。烧结硬质合金是用粉末冶金方法制造成的,具有不同程度的孔隙。孔隙之大小、数量和分布
With the rapid development of industrial production in our country, the research, production and use of cemented carbide have also been on the increase. Especially in the field of mechanical manufacturing such as metal cutting, cemented carbide occupies a certain position. As the production and use of cemented carbide department, how to cut off its quality in order to be rationally used, which is a more important issue, it is necessary to test the cemented carbide. Sintered cemented carbide is made by powder metallurgy, with varying degrees of porosity. The size, number and distribution of pores