Spheroidizing mechanism and practice of eutectic carbides in Fe-W-C alloy

来源期刊：中国有色金属学报(英文版)2005年第z3期

论文作者：蒋志强 杜建铭

文章页码：208 - 211

Key words：Fe-W-C alloy； eutectic carbide； spheroidizing； modification

Abstract: The influences of Ce, K and Na on the structures and properties of Fe-W-C alloy were investigated, and the idea estimating spheroidizing effect of carbides using circular degree(C.D) was put forward. The result shows that eutectic carbide turns into sphericity from network after modification, carbide is refined and uniformly distributed and C.D of eutectic carbide increases. The mechanism of carbide spheroidizing was analyzed. The impact toughness and abrasion resistance of Fe-W-C obviously improve with the rise of C.D of carbides. The service life of modified Fe-W-C roll is 30% higher than that of high chromium cast iron roll, while its production cost is reduced by 30%.