JPS5789425A - Manufacture of steel for carburizing - Google Patents

Manufacture of steel for carburizing

Info

Publication number
JPS5789425A
JPS5789425A JP16268180A JP16268180A JPS5789425A JP S5789425 A JPS5789425 A JP S5789425A JP 16268180 A JP16268180 A JP 16268180A JP 16268180 A JP16268180 A JP 16268180A JP S5789425 A JPS5789425 A JP S5789425A
Authority
JP
Japan
Prior art keywords
steel
manufacture
steel strips
strips
rolling
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
JP16268180A
Other languages
Japanese (ja)
Inventor
Toshio Yanagiya
Kenji Isogawa
Kunio Yamaguchi
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 JP16268180A priority Critical patent/JPS5789425A/en
Publication of JPS5789425A publication Critical patent/JPS5789425A/en
Pending legal-status Critical Current

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  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE: To prevent the coarsening of austenite crystal grains during the carburizing and heating period by designating the average cooling speed and blooming, rolling and heating temperature of a steel strip to specific value in the manufacture of the steel strip from molten steel containing specific proportions of Al and N.
CONSTITUTION: When manufacturing cast steel strips from molten steel containing 0.010W0.060wt% Al and 0.005W0.020wt% N, an average cooling rate for the cast steel strips is designated to 0.2°C/sec or more. Then, during a blooming rolling process to manufacture steel strips from the cast steel strips, a rolling and heating temperature is designated to 1,200W1,350°C. Furthermore, the steel strips are heated to 950W1,100°C and rolled to obtain rolled steel products. As needed, a small amount of one or two or more of Ni, Cr, Mo, and Mn, or of Nb, Ti, Zr, V, and Ta may be added to the steel material.
COPYRIGHT: (C)1982,JPO&Japio
JP16268180A 1980-11-20 1980-11-20 Manufacture of steel for carburizing Pending JPS5789425A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16268180A JPS5789425A (en) 1980-11-20 1980-11-20 Manufacture of steel for carburizing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16268180A JPS5789425A (en) 1980-11-20 1980-11-20 Manufacture of steel for carburizing

Publications (1)

Publication Number Publication Date
JPS5789425A true JPS5789425A (en) 1982-06-03

Family

ID=15759266

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16268180A Pending JPS5789425A (en) 1980-11-20 1980-11-20 Manufacture of steel for carburizing

Country Status (1)

Country Link
JP (1) JPS5789425A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63157816A (en) * 1986-12-22 1988-06-30 Kawasaki Steel Corp Manufacture of carburizing steel material
JPH0673445A (en) * 1992-08-27 1994-03-15 Kobe Steel Ltd Manufacture of steel material having little surface flaw

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4871319A (en) * 1971-12-28 1973-09-27
JPS5187431A (en) * 1975-01-31 1976-07-31 Kawasaki Steel Co Hyomenwarenonai haganechuhennorenzokuchuzonyoruseizohoho
JPS556456A (en) * 1978-06-29 1980-01-17 Daido Steel Co Ltd Blank for surface hardened material having less heat treatment strain

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4871319A (en) * 1971-12-28 1973-09-27
JPS5187431A (en) * 1975-01-31 1976-07-31 Kawasaki Steel Co Hyomenwarenonai haganechuhennorenzokuchuzonyoruseizohoho
JPS556456A (en) * 1978-06-29 1980-01-17 Daido Steel Co Ltd Blank for surface hardened material having less heat treatment strain

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JPH0673445A (en) * 1992-08-27 1994-03-15 Kobe Steel Ltd Manufacture of steel material having little surface flaw

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