{"id":21174,"date":"2022-06-11T15:43:53","date_gmt":"2022-06-11T07:43:53","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=21174"},"modified":"2022-06-11T15:51:14","modified_gmt":"2022-06-11T07:51:14","slug":"how-to-do-metallographic-preparation-and-hardness-test-of-cemented-carbide-in-meetyou-carbide","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/how-to-do-metallographic-preparation-and-hardness-test-of-cemented-carbide-in-meetyou-carbide\/","title":{"rendered":"How to do Metallographic Preparation and hardness test of cemented carbide in meetyou CARBIDE"},"content":{"rendered":"
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Cemented carbide is a kind of alloy material prepared by powder metallurgy process using hard compounds of refractory metals such as tungsten carbide (WC) or other MC type carbides and bonding metals. The bonding metals are mainly cobalt based, nickel based and iron-based.<\/p>\n\n\n\n
Generally, high-power precision cutting machine and diamond cutting blade (20lc) are used for cemented carbide sampling. Due to its own hard characteristics, the cutting surface flatness is very good, and rough grinding steps are usually not\u00a0required.<\/p>\n\n\n\n
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The removed samples usually need to be inlaid before grinding and polishing. In the inlay, we recommend to use the hot inlay epoxy resin added with mineral or glass powder. If cold inlay must be used under some special conditions, we also need to add reinforced ceramic powder to the resin to improve the hardness of the resin.<\/p>\n\n\n\n
For the grinding of cemented carbide, silicon carbide abrasive paper is powerless, so a specific diamond grinding disc must be selected. When the amount of material removed by grinding is large, we can use resin bonded disc or 45 \u03bc M metal bonding plate as the first step of grinding. When the cutting surface is smooth and smooth, and there is no need to remove the material, we can also choose hard grinding disc with rough polishing of diamond suspension as the first step.<\/p>\n\n\n\n