Abstract
A spray forming technique, which can produce semi-finished products with high density and rapid solidification structure in a single operation, has been developed recently. This method is called the Osprey process. This process can control size and distribution of carbides and takes lower production cost than powder metallurgy (P/M) process owing to a single operation. In this paper the cutting performance of high-speed steel (HSS) end mill produced by Osprey process was investigated by comparison with conventional ingot metallurgy (I/M) and P/M ones. This Osprey HSS end mill exhibited superior wear resistance to I/M and P/M ones in milling tool steel (SKD 11), but some chippings and fracture appeared at the end cutting edge in milling stainless steel (SUS 304) in small feed rate.
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