JPS5726108A - Production of stainless steel powder - Google Patents
Production of stainless steel powderInfo
- Publication number
- JPS5726108A JPS5726108A JP10160780A JP10160780A JPS5726108A JP S5726108 A JPS5726108 A JP S5726108A JP 10160780 A JP10160780 A JP 10160780A JP 10160780 A JP10160780 A JP 10160780A JP S5726108 A JPS5726108 A JP S5726108A
- Authority
- JP
- Japan
- Prior art keywords
- stainless steel
- powder
- soln
- treated
- etching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
PURPOSE: To produce stainless steel powder of good formability with high yields by subjecting the austenitic stainless steel having been solid solution-treated to sensitization treatment under specific conditions and etching the same with a mixed acid soln of nitricacid and hydrofluoricacid of proper concns.
CONSTITUTION: The austenitic atainless steel having been solid solution-treated is heated for 10W20hr at 630W700°C in an oxidation-free or reducing atmosprere, after which it is slowly cooled down to ordinary temp. The stainless steel having undergone such sensitization treatment is immersed in an etching soln. of 20±5% nitric acid concn. in the soln. and 3±0.5% hydrofluoric acid concn., whereby intergranular corrosion is caused and the stainless steel in made into powder. The stainless powder obtained by this method has a gain size distribution of about ≥90% 250-mesh undersize, and since no mechanical size reducing means are used after the intergranular corrosion, the hardness of the powder is low. The high powder density at the compression molding makes the formation of cracking or the like in the molding virtually none.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10160780A JPS5726108A (en) | 1980-07-24 | 1980-07-24 | Production of stainless steel powder |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10160780A JPS5726108A (en) | 1980-07-24 | 1980-07-24 | Production of stainless steel powder |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5726108A true JPS5726108A (en) | 1982-02-12 |
Family
ID=14305073
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10160780A Pending JPS5726108A (en) | 1980-07-24 | 1980-07-24 | Production of stainless steel powder |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5726108A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104162678A (en) * | 2014-09-03 | 2014-11-26 | 四川理工学院 | Method for preparing high-compressibility water atomization stainless steel powder through intergranular corrosion |
-
1980
- 1980-07-24 JP JP10160780A patent/JPS5726108A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104162678A (en) * | 2014-09-03 | 2014-11-26 | 四川理工学院 | Method for preparing high-compressibility water atomization stainless steel powder through intergranular corrosion |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS55113865A (en) | Leveling aging method for age hardening type titanium alloy member | |
JPS54145335A (en) | Surface reforming of metal molding | |
JPS5726108A (en) | Production of stainless steel powder | |
JPS5248507A (en) | Method for cooling outer surface of metallic pipe or large diameter | |
SU1194898A1 (en) | Method of treating stainless maraging steel | |
JPS57134519A (en) | Production of unidirectional magnetic steel plate of high magnetic flux density | |
JPS5719321A (en) | Improvement for sulfide stress corrosion cracking of low alloy steel | |
JPS5719322A (en) | Improvement of sulfide stress corrosion cracking of low alloy steel | |
JPS55138082A (en) | Descaling method for stainless steel | |
JPS5538983A (en) | Production of high density powder molding by powder hot forging process | |
JPS56102501A (en) | Manufacture of sintered parts | |
JPS5719325A (en) | Production of steel product | |
JPS57116727A (en) | Production of high carbon alloy steel wire rod | |
Kolachev | The Effect of Hydrogen on the Yield Strength of Rolled Steel During Acceptance Testing | |
JPS5716114A (en) | Manufacture of steel for hardening by high frequency | |
JPS57120660A (en) | Manufacture of nickel superalloy | |
JPS5721234A (en) | Production of hardened steel piston ring | |
SU876736A1 (en) | Method of treatment of invar alloy | |
JPS5576046A (en) | Ultra low carbon nitriding steel | |
JPS575817A (en) | Stainless steel having excellent anticorrosion and preparation thereof | |
JPS5322809A (en) | Heat treating method of piping | |
JPS53124124A (en) | Manufacture of rolled steel | |
JPS5480264A (en) | Manufacture of pipe of zirconium or zirconium base alloy | |
JPS5681619A (en) | Production of tempered high tensile steel plate | |
JPS56158819A (en) | Manufacture of cold rolled plate of austenite stainless steel with fine surface luster and high corrosion resistance |