Title:
合金粉末の製造方法
Document Type and Number:
Japanese Patent JP6393885
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a production method of an alloy powder from which an alloy structure can be manufactured that is in any shapes and dimensions and has high uniformity in the elemental composition and the distribution of mechanical strength and favorable high-temperature strength and corrosion resistance.SOLUTION: The production method of an alloy powder includes: a melting step of melting a raw metal ingot to prepare a molten metal; a peroxidation step of blowing oxygen gas into the molten metal to form a slag; a separation step of separating the slag floating on the liquid surface of the molten metal from the molten metal; a degassing step of degassing the molten metal by blowing argon gas into the molten metal separated from the slag; a casting step of casting the degassed molten metal to mold a cast alloy; a step of melting the cast alloy in vacuum to obtain a molten alloy; and a pulverization step of allowing the molten alloy to flow downward and blowing inert gas to the flowing molten alloy to form an alloy powder.SELECTED DRAWING: None
Inventors:
Takahiko Kato
Kousuke Kousuke
Tadashi Fujieda
Kinya Aota
Isamu Takahashi
Hiroyuki Satake
Satoshi Yamaga
Moto Murakami
Kousuke Kousuke
Tadashi Fujieda
Kinya Aota
Isamu Takahashi
Hiroyuki Satake
Satoshi Yamaga
Moto Murakami
Application Number:
JP2014151341A
Publication Date:
September 26, 2018
Filing Date:
July 25, 2014
Export Citation:
Assignee:
Hitachi Metals Co., Ltd.
International Classes:
B22F9/08; B22D23/00; C22C30/00; C22C30/02; C22C30/04; C22C30/06
Domestic Patent References:
| JP2002173732A | ||||
| JP2003293024A | ||||
| JP10204549A | ||||
| JP2014019886A | ||||
| JP2001192709A | ||||
| JP2014105373A | ||||
| JP2009074173A |
Foreign References:
| WO2009069684A1 | ||||
| US20130323116 | ||||
| CN103056352A |
Other References:
F. J. WANG, Y. ZHANG, G. L. CHEN,Cooling Rate and Size Effect on the Microstructure and Mechanical Properties of AlCoCrFeNi High Entr,Journal of Engineering Materials and Technology,米国,ASME,2009年 7月,Vol.131, No.3,p.034501.1-034501.3