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AN AQUEOUS WC-Co CEMENTED CARBIDE SLURRY AND A METHOD OF GEL-CASTING A CEMENTED CARBIDE BODY
AN AQUEOUS WC-Co CEMENTED CARBIDE SLURRY AND A METHOD OF GEL-CASTING A CEMENTED CARBIDE BODY
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机译:WC-Co硬质合金水浆和凝胶浇铸硬质合金的方法
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摘要
The present invention provides a method of gel-casting WC-Co cemented carbide powder, where the resulting gelled body can be of complex shape and has a high green density, a good homogeneity and sufficiently good mechanical properties for the gelled body to be demolded and dried without significant shape-distortions and cracking. The method relates to the forming of a gelled body through the gelling of an aqueous slurry of WC-Co cemented carbide powder with good dispersion characteristics, where the gelling is achieved by the temperature induced polymerisation reaction between a monomer and a cross-linker, catalysed by a free-radical initiator. By further subjecting the body to drying, heating and sintering, a dense cemented carbide body is obtained.
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