WIRE DRAWING DIE AND METHOD OF MAKING THE SAME
专利汇可以提供WIRE DRAWING DIE AND METHOD OF MAKING THE SAME专利检索，专利查询，专利分析的服务。并且In the past, wire drawing dies employing blanks having polycrystalline aggregate of synthetic diamond cores have been shrink-fitted in the casing. Such shrink-fitting of the blank has required a substantial amount of skilled labor and has resulted in excessive breakage of the synthetic diamond core. Accordingly it has been desirable to provide a wire drawing die employing a synthetic hard, wear-resistant material, and a method of making the same which eliminates shrink-fitting of the blank in the casing. In accordance with the method a wire drawing die (10) is produced by providing a metal casing (12) with a cavity (18) having an undercut (22) adjacent the bottom (20), a first layer (51) of metal powder is deposited in the cavity (18), a metal blank (38) having a core (40) formed of a synthetic hard, wear-resistant material is placed on the first layer (51) and a second, layer (54) of metal powder is deposited in the cavity covering the first layer (51) and the blank (38). A cylindrical plug (24), having a cavity (30) formed in one end, is inserted in the casing cavity (18) with a close slip-fit and pressure is applied to the other end of said plug (24) to thereby compress the metal powder layers. The casing (12) is heated to a temperature which is sufficient to melt the metal powder but is less than the thermal degradation temperature of the core (40) thus forming a body of molten metal which encapsulates the blank (38). The casing (12) is cooled to solidify the metal body and thereby secure the plug (24) and blank (38) in the casing cavity (18).，下面是WIRE DRAWING DIE AND METHOD OF MAKING THE SAME专利的具体信息内容。
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