著者
井川 良雄 熊谷 憲
出版者
Japan Society of Powder and Powder Metallurgy
雑誌
粉体および粉末冶金 (ISSN:05328799)
巻号頁・発行日
vol.38, no.4, pp.552-556, 1991

The Osprey Process introduced here is a kind of spray deposition, available for manufacturing bulk preform of high density and high strength by one process straight from molten metals.<BR>The characteristics of this osprey preform are as follows;<BR>(1) Osprey preform density as deposit is higher than 99.4% for high speed steel (Disc preform) and higher than 99.3% for high carbon high speed steel (Tube preform).<BR>(2) The transverse rupture strength of Osprey preform after forged is superior to that of wrought alloy.<BR>(3) The transverse rupture strength of Osprey preform after HIP treatment is 2 times as high as that of conventional cast.<BR>(4) The density and strength of Osprey preform which were adequately deposited, worked and heat treated are expected to be improved further.