JPS55138001A - Preparation of powder of alloy steel with low oxygen - Google Patents

Preparation of powder of alloy steel with low oxygen

Info

Publication number
JPS55138001A
JPS55138001A JP4460679A JP4460679A JPS55138001A JP S55138001 A JPS55138001 A JP S55138001A JP 4460679 A JP4460679 A JP 4460679A JP 4460679 A JP4460679 A JP 4460679A JP S55138001 A JPS55138001 A JP S55138001A
Authority
JP
Japan
Prior art keywords
steel powder
treated
powder
reduction
low oxygen
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
Application number
JP4460679A
Other languages
Japanese (ja)
Inventor
Nobuyasu Kawai
Minoru Hirano
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP4460679A priority Critical patent/JPS55138001A/en
Publication of JPS55138001A publication Critical patent/JPS55138001A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To manufacture alloy steel powder suitable for raw material for powder metallurgy by a method wherein atomized steel powder containing elements, which are easy to be oxidized, is heated in a reducing gas atmosphere containing hydrogen gas, reduction-treated and annealing-treated.
CONSTITUTION: Atomized steel powder containing elements such as, Cr, Mn, V, Nb, Si, etc., which are easy to be oxidized, is reduction-treated in a low temperature range of 300W650°C, preferably, approximate 450W550°C, in a reducing gas (particularly, mixed gas of three molecules of hydrogen and one molecule of nitrogen) atmosphere containing hydrogen gas. The atomized steel powder after the reduction treatment is annealing-treated at a temperature of approximate 850W 1,200°C in an atmosphere containing the same hydrogen gas as mentioned above. Thus, steel powder with a low oxygen level is obtained as compared to conventional reduction methods.
COPYRIGHT: (C)1980,JPO&Japio
JP4460679A 1979-04-11 1979-04-11 Preparation of powder of alloy steel with low oxygen Pending JPS55138001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4460679A JPS55138001A (en) 1979-04-11 1979-04-11 Preparation of powder of alloy steel with low oxygen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4460679A JPS55138001A (en) 1979-04-11 1979-04-11 Preparation of powder of alloy steel with low oxygen

Publications (1)

Publication Number Publication Date
JPS55138001A true JPS55138001A (en) 1980-10-28

Family

ID=12696099

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4460679A Pending JPS55138001A (en) 1979-04-11 1979-04-11 Preparation of powder of alloy steel with low oxygen

Country Status (1)

Country Link
JP (1) JPS55138001A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6425901A (en) * 1987-07-17 1989-01-27 Kobe Steel Ltd Production of low alloy steel powder for low c and low o powder metallurgy
JPH0448002A (en) * 1990-06-18 1992-02-18 Kawasaki Steel Corp Method for raising temperature at the time of executing finish reduction annealing to alloy steel powder
JP2021113358A (en) * 2015-03-19 2021-08-05 Ｄｏｗａエレクトロニクス株式会社 Silver-covered metal powder and method for producing the same

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4834509A (en) * 1971-09-04 1973-05-19
JPS5281056A (en) * 1975-12-29 1977-07-07 Kobe Steel Ltd Method of making carbon prealloy steel powder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4834509A (en) * 1971-09-04 1973-05-19
JPS5281056A (en) * 1975-12-29 1977-07-07 Kobe Steel Ltd Method of making carbon prealloy steel powder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6425901A (en) * 1987-07-17 1989-01-27 Kobe Steel Ltd Production of low alloy steel powder for low c and low o powder metallurgy
JPH0448002A (en) * 1990-06-18 1992-02-18 Kawasaki Steel Corp Method for raising temperature at the time of executing finish reduction annealing to alloy steel powder
JP2021113358A (en) * 2015-03-19 2021-08-05 Ｄｏｗａエレクトロニクス株式会社 Silver-covered metal powder and method for producing the same

Similar Documents

Publication Publication Date Title
JPS55100959A (en) Invar alloy with excellent welding high temperature crack resistance and strain corrosion crack resistance
KR20000067948A (en) Process for the preparation of an iron-based powder
JPS55138001A (en) Preparation of powder of alloy steel with low oxygen
JPS6425901A (en) Production of low alloy steel powder for low c and low o powder metallurgy
JPS527818A (en) Process for producing rust proofing, medium carbon, martensitic, chrom ium stainless steel
JPS55138046A (en) Electric contact material
JPS5538931A (en) Production of raw material powder for powder metallurgy
JPS55164019A (en) Nitrogen adding agent for iron and steel and preparation thereof
JPS579803A (en) Sintering method
JPS55161001A (en) Production of steel powder for powder metallurgy
JPS54133418A (en) Case hardening steel without producing abnormal carburized structure
JPS5249973A (en) Decreasing method of nox in boilr exhaust gas
JPS5672142A (en) Manufacture of magnesium alloy
JPS5597424A (en) Preparation of heat-treated steel with excellent low temperature toughness
JPS5269812A (en) Preparation of ultra low carbon high cr steel
JPS5521517A (en) Manufacture of hot-rolled coil
JPS649604A (en) Manufacture of ferromagnetic metal powder
JPS5576046A (en) Ultra low carbon nitriding steel
JPS5443108A (en) Preparation of solid solution containing molybdenum
JPS56134509A (en) Production of shaped active carbon
Jiang et al. Study on the Dephosphorization of High-Manganese Steel(Mn 13) Under Reducing Atmosphere by Injection Process
JPS5544567A (en) Production of sintered parts
JPS5450407A (en) Preparation of sintered product
JPS5677360A (en) Iron-base sintered parts
Kauv et al. Process Control in the Production of Sintered Steels Under an Atmosphere of Hydrogen With Methane Addition