JPS57104626A - Manufacture of fine-grain case-hardening steel - Google Patents

Manufacture of fine-grain case-hardening steel

Info

Publication number
JPS57104626A
JPS57104626A JP18114680A JP18114680A JPS57104626A JP S57104626 A JPS57104626 A JP S57104626A JP 18114680 A JP18114680 A JP 18114680A JP 18114680 A JP18114680 A JP 18114680A JP S57104626 A JPS57104626 A JP S57104626A
Authority
JP
Japan
Prior art keywords
fine
steel
manufacture
hardening steel
grain case
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
JP18114680A
Other languages
Japanese (ja)
Inventor
Kazuhiko Nishida
Takayuki Ikeda
Michitaka Fujita
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.)
Nippon Steel Corp
Original Assignee
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP18114680A priority Critical patent/JPS57104626A/en
Publication of JPS57104626A publication Critical patent/JPS57104626A/en
Pending legal-status Critical Current

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Landscapes

  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE: To manufacture a fine-grain case-hardening steel causing no grain coarsening during carburizing without carrying out normalizing by rolling a steel having a specified composition contg. Al and N in a strictly regulated ratio under such heating and rolling conditions as to precipitate no AlN.
CONSTITUTION: A steel having a composition consisting of 0.10W0.30% C, ≤0.50% Si, 0.30W1.80% Mn, 0.015W0.06% Sol. Al, 0.30W1.80% Cr, ≥0.005% and 1/2AlW(1/2Al-0.01)% N, and the balance Fe with impurities or further contg. 0.05W0.35% Mo is heated to the A3 pointW1,100°C and hot rolled at 900W1,000°C. The resulting fine-grain case-hardening steel precipitates AlN during a temp. rise for carburizing, and by the effect the austenite grains are prevented from coarsening.
COPYRIGHT: (C)1982,JPO&Japio
JP18114680A 1980-12-19 1980-12-19 Manufacture of fine-grain case-hardening steel Pending JPS57104626A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18114680A JPS57104626A (en) 1980-12-19 1980-12-19 Manufacture of fine-grain case-hardening steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18114680A JPS57104626A (en) 1980-12-19 1980-12-19 Manufacture of fine-grain case-hardening steel

Publications (1)

Publication Number Publication Date
JPS57104626A true JPS57104626A (en) 1982-06-29

Family

ID=16095685

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18114680A Pending JPS57104626A (en) 1980-12-19 1980-12-19 Manufacture of fine-grain case-hardening steel

Country Status (1)

Country Link
JP (1) JPS57104626A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61261427A (en) * 1985-05-13 1986-11-19 Kobe Steel Ltd Production of steel having superior cold workability and preventing coarsening of grain during carburization heating
JPS63137145A (en) * 1986-11-29 1988-06-09 Nippon Steel Corp Steel for carburizing
JPS63157816A (en) * 1986-12-22 1988-06-30 Kawasaki Steel Corp Manufacture of carburizing steel material
JPS6447838A (en) * 1987-08-13 1989-02-22 Nippon Steel Corp Curburizing steel
JP2017106079A (en) * 2015-12-10 2017-06-15 山陽特殊製鋼株式会社 Steel for machine structural use excellent in crystal grain coarsening resistance, bending fatigue-resistant strength and impact-resistant strength

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61261427A (en) * 1985-05-13 1986-11-19 Kobe Steel Ltd Production of steel having superior cold workability and preventing coarsening of grain during carburization heating
JPS63137145A (en) * 1986-11-29 1988-06-09 Nippon Steel Corp Steel for carburizing
JPH049858B2 (en) * 1986-11-29 1992-02-21
JPS63157816A (en) * 1986-12-22 1988-06-30 Kawasaki Steel Corp Manufacture of carburizing steel material
JPH0572442B2 (en) * 1986-12-22 1993-10-12 Kawasaki Steel Co
JPS6447838A (en) * 1987-08-13 1989-02-22 Nippon Steel Corp Curburizing steel
JP2017106079A (en) * 2015-12-10 2017-06-15 山陽特殊製鋼株式会社 Steel for machine structural use excellent in crystal grain coarsening resistance, bending fatigue-resistant strength and impact-resistant strength

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