JPS5719366A - Machine structural steel with superior cold forgeability and machinability - Google Patents

Machine structural steel with superior cold forgeability and machinability

Info

Publication number
JPS5719366A
JPS5719366A JP9350180A JP9350180A JPS5719366A JP S5719366 A JPS5719366 A JP S5719366A JP 9350180 A JP9350180 A JP 9350180A JP 9350180 A JP9350180 A JP 9350180A JP S5719366 A JPS5719366 A JP S5719366A
Authority
JP
Japan
Prior art keywords
machine structural
structural steel
machinability
inclusions
cas
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
JP9350180A
Other languages
Japanese (ja)
Other versions
JPH0133544B2 (en
Inventor
Sadayoshi Furusawa
Hideo Takeshita
Tsuyoshi Yukioka
Jiro Koarai
Shuji Iwata
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 JP9350180A priority Critical patent/JPS5719366A/en
Priority to DE3126984A priority patent/DE3126984A1/en
Priority to US06/281,675 priority patent/US4431445A/en
Publication of JPS5719366A publication Critical patent/JPS5719366A/en
Publication of JPH0133544B2 publication Critical patent/JPH0133544B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To enhance the cold forgeability and machinability of a machine structural steel by adjusting each of the Ca, S, Pb and Bi contents to a proper amount, controlling the inclusions to appropriate shape, and dispersing them finely.
CONSTITUTION: This machine structural steel is obtd. by continuously adding much Ca to molten steel so as to convert dissolved S into CaS and eliminate or minimize Al2O3 by reduction in the presence of Ca. As a result, the inclusions are converted into CaS-CaO and dispersed finely and uniformly. Pb and/or Si is then added by a small amount in the form of a compound, metal or an alloy. Thus, the titled steel contains 0.001W0.05% Ca, 0.02W0.15% Pb and/or Bi and ≤0.005% S, and the inclusions are regulated to CaS-CaO, Pb, Bi and <0.001% Al2O3.
COPYRIGHT: (C)1982,JPO&Japio
JP9350180A 1980-07-09 1980-07-09 Machine structural steel with superior cold forgeability and machinability Granted JPS5719366A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP9350180A JPS5719366A (en) 1980-07-09 1980-07-09 Machine structural steel with superior cold forgeability and machinability
DE3126984A DE3126984A1 (en) 1980-07-09 1981-07-08 Steel for mechanical engineering, having excellent cold-forgeability and machinability
US06/281,675 US4431445A (en) 1980-07-09 1981-07-09 Steel for machine construction having excellent cold forgeability and machinability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9350180A JPS5719366A (en) 1980-07-09 1980-07-09 Machine structural steel with superior cold forgeability and machinability

Publications (2)

Publication Number Publication Date
JPS5719366A true JPS5719366A (en) 1982-02-01
JPH0133544B2 JPH0133544B2 (en) 1989-07-13

Family

ID=14084089

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9350180A Granted JPS5719366A (en) 1980-07-09 1980-07-09 Machine structural steel with superior cold forgeability and machinability

Country Status (1)

Country Link
JP (1) JPS5719366A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6421012A (en) * 1987-07-17 1989-01-24 Kobe Steel Ltd Production of shaft-shaped parts induction-hardened after cold forging
JPH07291190A (en) * 1995-05-22 1995-11-07 Yamaha Motor Co Ltd Small-sized vessel
KR20240027759A (en) 2021-08-10 2024-03-04 닛폰세이테츠 가부시키가이샤 steel

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6421012A (en) * 1987-07-17 1989-01-24 Kobe Steel Ltd Production of shaft-shaped parts induction-hardened after cold forging
JPH0745695B2 (en) * 1987-07-17 1995-05-17 株式会社神戸製鋼所 Method for manufacturing shaft-shaped component that is induction hardened after cold forging
JPH07291190A (en) * 1995-05-22 1995-11-07 Yamaha Motor Co Ltd Small-sized vessel
KR20240027759A (en) 2021-08-10 2024-03-04 닛폰세이테츠 가부시키가이샤 steel

Also Published As

Publication number Publication date
JPH0133544B2 (en) 1989-07-13

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