JPS569326A - Manufacture of case hardening steel - Google Patents

Manufacture of case hardening steel

Info

Publication number
JPS569326A
JPS569326A JP8351479A JP8351479A JPS569326A JP S569326 A JPS569326 A JP S569326A JP 8351479 A JP8351479 A JP 8351479A JP 8351479 A JP8351479 A JP 8351479A JP S569326 A JPS569326 A JP S569326A
Authority
JP
Japan
Prior art keywords
steel
case hardening
manufacture
hot
quality characteristics
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
JP8351479A
Other languages
Japanese (ja)
Other versions
JPS5946288B2 (en
Inventor
Katsunori Takada
Mitsuyasu Nakakura
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.)
Daido Steel Co Ltd
Original Assignee
Daido Steel Co 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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP54083514A priority Critical patent/JPS5946288B2/en
Publication of JPS569326A publication Critical patent/JPS569326A/en
Publication of JPS5946288B2 publication Critical patent/JPS5946288B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To manufacture a case hardening low-alloy steel which is less in dispersion of quality characteristics after being rolled and also free of the formation of anomalous texture due to the coarsening of crystal grains after the subsequent surface hardening treatment by hot-rolling a steel containing specific alloying components under a definite condition.
CONSTITUTION: A case hardening steel contains 0.05W0.30% C, 0.10W0.40% Si, and 0.30W2.0% Mn, together with at least one of 0.007W0.025% N, 0.015W0.08% Al, 0.01W0.20% Ti, 0.01W0.20% V, and 0.005W0.20% Nb; or together with, besides the components mentioned above, 0.80W1.50% Cr, 0.10W0.50% Mo, 0.20W1.50% Cr and 1.5W4.0% Ni, or 0.30W0.70% Cr, 0.10W0.30% Mo, and 0.30W2.0% Ni. The steel is hot-rolled under the conditions of a final finish processing rate of >15% and a final finish temperature of <950°C and then cooled at a cooling rate of 10°C/sec or less down to 500°C. Thus, a case hardening steel adequate for mechanical structure with uniform quality characteristics can be manufactured.
COPYRIGHT: (C)1981,JPO&Japio
JP54083514A 1979-07-03 1979-07-03 Manufacturing method of case hardened steel Expired JPS5946288B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54083514A JPS5946288B2 (en) 1979-07-03 1979-07-03 Manufacturing method of case hardened steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54083514A JPS5946288B2 (en) 1979-07-03 1979-07-03 Manufacturing method of case hardened steel

Publications (2)

Publication Number Publication Date
JPS569326A true JPS569326A (en) 1981-01-30
JPS5946288B2 JPS5946288B2 (en) 1984-11-12

Family

ID=13804585

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54083514A Expired JPS5946288B2 (en) 1979-07-03 1979-07-03 Manufacturing method of case hardened steel

Country Status (1)

Country Link
JP (1) JPS5946288B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5852424A (en) * 1981-09-22 1983-03-28 Nippon Steel Corp Manufacture of steel for carburizing at high temperature
JPS61124520A (en) * 1984-11-21 1986-06-12 Kawasaki Steel Corp Production of regulated coarse-grained carburizing steel
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
US4634573A (en) * 1981-09-10 1987-01-06 Daido Tokushuko Kabushiki Kaisha Steel for cold forging and method of making
JPS63157816A (en) * 1986-12-22 1988-06-30 Kawasaki Steel Corp Manufacture of carburizing steel material
US4773947A (en) * 1983-08-02 1988-09-27 Nissan Motor Co., Ltd. Manufacturing process for high temperature carburized case harden steel

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5477217A (en) * 1977-12-01 1979-06-20 Sumitomo Metal Ind Ltd Production of rod steel without thermal refining

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5477217A (en) * 1977-12-01 1979-06-20 Sumitomo Metal Ind Ltd Production of rod steel without thermal refining

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4634573A (en) * 1981-09-10 1987-01-06 Daido Tokushuko Kabushiki Kaisha Steel for cold forging and method of making
JPS5852424A (en) * 1981-09-22 1983-03-28 Nippon Steel Corp Manufacture of steel for carburizing at high temperature
US4773947A (en) * 1983-08-02 1988-09-27 Nissan Motor Co., Ltd. Manufacturing process for high temperature carburized case harden steel
JPS61124520A (en) * 1984-11-21 1986-06-12 Kawasaki Steel Corp Production of regulated coarse-grained carburizing steel
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
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

Also Published As

Publication number Publication date
JPS5946288B2 (en) 1984-11-12

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