The Applied Research About The Iron And Nickel-based Replace The Cobalt-base's Cemented Carbide

Introduced the present situation and development of Cemented carbide with iron nickel and Cobalt -based binders introduced, analyzed the key of make use of ferry and nickel to replace cobalt in cemented carbide, and the way of solve these difficulty is discussed.WC-20 (Fe/Co/Ni) cemented carbides were prepared by conventional powder metallurgy technology, the microstructures and mechanical properties were emphatically studied. The properties of Cemented carbide with iron sad nickel binders WC-Co Cemented carbide are compared with WC-Co Cemented carbide. It shows that WC-Co Cemented carbide could be replaced by iron/nickel-based Cemented carbide in cane shredder blade fields.The results were concluded as following:1. By the iron, the nickel, the cobalt make the binder's the cemented carbide, when the sintering temperature surpasses 1,450℃, the new Cemented carbide reached the liquid phase sintering, obtain certainly density.2. By the WC-20 %( 81.4Fe-10.2Ni-8.4Co) and WC-20 %( 65Fe-25Ni-15Co) make thebinder's the cemented carbide, has close traditional the cemented carbide performance3. By the WC-20 %( 71Fe-19.5Ni-9.5Co) make the binder's the cemented carbide, the hardness achieved 83.47 HRA, the Flexural strength reached 2376MPa, its performance over traditional cemented carbide.4. If the iron, the nickel replace the cobalt's cemented carbide were widely used, every cane shredder's cost may reduce 4000rmb/ years, the whole autonomous region's sugar factories can produce 50 million annual direct economic benefits.The article pointed out: with the development of production technology of modern cemented car-bide, the new generation of cemented carbide of few cobalt and no cobalt will replace the conterminal cemented carbide and they are widely application in many applied area.