JPS55122802A - Free-cutting steel powder - Google Patents

Free-cutting steel powder

Info

Publication number
JPS55122802A
JPS55122802A JP3033479A JP3033479A JPS55122802A JP S55122802 A JPS55122802 A JP S55122802A JP 3033479 A JP3033479 A JP 3033479A JP 3033479 A JP3033479 A JP 3033479A JP S55122802 A JPS55122802 A JP S55122802A
Authority
JP
Japan
Prior art keywords
mns
free
steel
amount
steel powder
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.)
Granted
Application number
JP3033479A
Other languages
Japanese (ja)
Other versions
JPS5645964B2 (en
Inventor
Toru Yamagami
Tatsumi Kawama
Masahiro Shimoda
Hitoshi Sakuma
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 JP3033479A priority Critical patent/JPS55122802A/en
Publication of JPS55122802A publication Critical patent/JPS55122802A/en
Publication of JPS5645964B2 publication Critical patent/JPS5645964B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/02—Making ferrous alloys by powder metallurgy
    • C22C33/0207—Using a mixture of prealloyed powders or a master alloy
    • C22C33/0221—Using a mixture of prealloyed powders or a master alloy comprising S or a sulfur compound

Abstract

PURPOSE: To obtain free-cutting steel powder in which the desulfurization does not occur in sintering, by containing a specified amount of S in the steel, and containing Mn slightly more than the Mn amount required to balance with the S amount as MnS, and grinding by atomization.
CONSTITUTION: S is contained in steel by 0.15W0.5wt%, and Mn is added by excess of 0.3wt% than the amount of Mn required to balance with said S as MnS. This steel is ground by atomization, and raw material steel powder for sintered product is obtained. When atomizing, oxidation of Mn which may reduce the MnS does not occur, and the excess Mn prevents decomposition of MnS and oxidation of Mn. The quantity of S necessary for free-cutting property exists in the form of MnS, so that deterioration of free-cutting property of sintered product due to desulfurization of S and damage of sintering furnace due to desulfurized S may be prevented.
COPYRIGHT: (C)1980,JPO&Japio
JP3033479A 1979-03-14 1979-03-14 Free-cutting steel powder Granted JPS55122802A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3033479A JPS55122802A (en) 1979-03-14 1979-03-14 Free-cutting steel powder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3033479A JPS55122802A (en) 1979-03-14 1979-03-14 Free-cutting steel powder

Publications (2)

Publication Number Publication Date
JPS55122802A true JPS55122802A (en) 1980-09-20
JPS5645964B2 JPS5645964B2 (en) 1981-10-30

Family

ID=12300910

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3033479A Granted JPS55122802A (en) 1979-03-14 1979-03-14 Free-cutting steel powder

Country Status (1)

Country Link
JP (1) JPS55122802A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0545884A3 (en) * 1991-12-04 1995-02-01 Boehler Edelstahl Steel and process and installation for its preparation
EP0726332A2 (en) * 1995-02-07 1996-08-14 Crucible Materials Corporation Sulfur-containing powder-metallurgy tool steel article
US6071414A (en) * 1995-03-22 2000-06-06 Mechano Chemical Research Institute Ltd. Method for desalinating salts-containing water and apparatus therefor

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102248156B (en) * 2011-06-14 2013-03-27 吕元之 Powder metallurgy car connecting rod and common mould pressing production method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329258A (en) * 1976-08-31 1978-03-18 Kobe Steel Ltd High sulfur content free cutting steel powder manufacturing

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5329258A (en) * 1976-08-31 1978-03-18 Kobe Steel Ltd High sulfur content free cutting steel powder manufacturing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0545884A3 (en) * 1991-12-04 1995-02-01 Boehler Edelstahl Steel and process and installation for its preparation
EP0726332A2 (en) * 1995-02-07 1996-08-14 Crucible Materials Corporation Sulfur-containing powder-metallurgy tool steel article
EP0726332A3 (en) * 1995-02-07 1998-01-28 Crucible Materials Corporation Sulfur-containing powder-metallurgy tool steel article
US6071414A (en) * 1995-03-22 2000-06-06 Mechano Chemical Research Institute Ltd. Method for desalinating salts-containing water and apparatus therefor

Also Published As

Publication number Publication date
JPS5645964B2 (en) 1981-10-30

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