Title:
ステンレス鋼粉末
Document Type and Number:
Japanese Patent JP4536166
Kind Code:
B2
Abstract:
The invention concerns a process for producing low oxygen, essentially carbon free stainless steel powder, which comprises the steps of preparing molten steel which in addition to iron contains carbon and at least 10% of chromium, adjusting the carbon content of the melt to a value which is decided by the expected oxygen content after water atomising; water-atomising the melt and annealing the as-atomised powder at a temperature of at least 1120° C. in a reducing atmosphere containing controlled amounts of water. The invention also concerns a water-atomised powder including 10% by weight of chromium and having a carbon content between 0.2 and 0.7, preferably between 0.4 and 0.6% by weight and an oxygen/carbon ratio of about 1 to 3 and at most 0.5% of impurities, as well as the annealed powder obtained according to the process.
Inventors:
Alvidson, Johann
Triggmo, Alf
Triggmo, Alf
Application Number:
JP50430699A
Publication Date:
September 01, 2010
Filing Date:
June 17, 1998
Export Citation:
Assignee:
Hoganus Activola Get
International Classes:
B22F9/08; B22F1/00; C22C33/02; C22C38/00; C22C38/22; C22C38/50
Domestic Patent References:
| JP59080702A | ||||
| JP51001353A | ||||
| JP8176603A | ||||
| JP8193251A | ||||
| JP8246008A | ||||
| JP7243009A | ||||
| JP1275702A | ||||
| JP4048002A | ||||
| JP2274801A | ||||
| JP63238201A |
Attorney, Agent or Firm:
Hideto Asamura
Hajime Asamura
Yuichiro Asano
Katsunori Ando
Hajime Asamura
Yuichiro Asano
Katsunori Ando