Iron and Nickel Replacing Cobalt

With the rapid development of industrial technology, cemented carbide tool materials have been rapidly penetrated into all aspects of industrial production, gradually replacing the original high speed steel materials, and showing unparalleled excellent performance. The main component of cemented carbide is tungsten carbide (WC). Because cobalt powder has good wettability to tungsten, it usually uses cobalt as adhesive phase.

Recently, the price of cobalt has been rising and high, affecting the production cost of hard alloy. Experts and scholars from all over the world are studying new resources of new cemented carbide materials, such as iron and nickel instead of cobalt.

The iron nickel ore reserves are quite abundant, and the technical problem of cheap price, some scholars have proposed a kind of performance that can ensure the hard alloy forming and special low-cost performance of hard alloy materials, while using argon in the sintering of cemented carbide mixture Gas as a carrier gas dewaxing, paraffin wax recycling, greatly improving the quality of the use of the product.

The full refining paraffin, which has a melting point of 58, is used as a molding agent. After heating and melting, it is directly added to the wet mill of the mixed slurry with wet grinding. It is wet for about 24 hours with the mixture, and a new hard alloy with low cost and high performance is prepared by drying, granulation, pressing molding, deforming agent and vacuum sintering. Materials were used, and argon was used as carrier gas in the sintering process to recover the paraffin.

The problem of environmental pollution is reduced and the hidden danger of safety is eliminated. At the same time, the properties of hard alloy forming and the quality of hard alloy materials are guaranteed. It has a broad and long-term application prospect. It can guarantee the performance of hard alloy forming and the special excellent performance of low cost hard alloy material. At the same time, when the cemented carbide is sinter, argon is used as carrier gas for dewaxing and recovery of paraffin, which greatly improves the quality of the product, reduces the pollution and reduces the hidden danger.

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