JPS57120614A - Method for producing steel material from ingot - Google Patents

Method for producing steel material from ingot

Info

Publication number
JPS57120614A
JPS57120614A JP378381A JP378381A JPS57120614A JP S57120614 A JPS57120614 A JP S57120614A JP 378381 A JP378381 A JP 378381A JP 378381 A JP378381 A JP 378381A JP S57120614 A JPS57120614 A JP S57120614A
Authority
JP
Japan
Prior art keywords
ingot
hot working
segregation
steel material
reduction
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
JP378381A
Other languages
Japanese (ja)
Other versions
JPH0158251B2 (en
Inventor
Takaharu Konno
Shiro Imai
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
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP378381A priority Critical patent/JPS57120614A/en
Publication of JPS57120614A publication Critical patent/JPS57120614A/en
Publication of JPH0158251B2 publication Critical patent/JPH0158251B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE: To obtain a steel material having uniform internal quality by subjecting a continuously cast ingot to heating, hot working and reheating treatments under specific temp. conditions and reduction of area, thereby dispersing and decreasing the segregation of the alloy elements and impurity elements present in the ingot.
CONSTITUTION: A continuously cast ingot is subjected to primary hot working at temps. above the A3 transformation point and below 1,200°C, and ≥20% reduction of sectional area. Thence, continuously from this or from the end temp. of the primary hot working, it is reheated within the ranges of 120W below 180min at 1,000°C, 30W180min at 1,165°C, 15W60min at 1,250°C, and below 30min at 1,300°C. This method is intended to annihilate or disperse and decrease the segregation of the alloy elements and impurity elements present in the ingot by treating the ingot through strain induced diffusion to be executed in a short time at low temps. If at least 0.0005W0.0008wt% Ca is beforehand added to this steel, the effect is further promoted.
COPYRIGHT: (C)1982,JPO&Japio
JP378381A 1981-01-16 1981-01-16 Method for producing steel material from ingot Granted JPS57120614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP378381A JPS57120614A (en) 1981-01-16 1981-01-16 Method for producing steel material from ingot

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP378381A JPS57120614A (en) 1981-01-16 1981-01-16 Method for producing steel material from ingot

Publications (2)

Publication Number Publication Date
JPS57120614A true JPS57120614A (en) 1982-07-27
JPH0158251B2 JPH0158251B2 (en) 1989-12-11

Family

ID=11566777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP378381A Granted JPS57120614A (en) 1981-01-16 1981-01-16 Method for producing steel material from ingot

Country Status (1)

Country Link
JP (1) JPS57120614A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59197523A (en) * 1983-04-19 1984-11-09 Sumitomo Metal Ind Ltd Manufacture of hot rolled steel plate for processing
JPS6230632A (en) * 1985-08-01 1987-02-09 Shinetsu Sekiei Kk Production of high-purity quartz glass
JPS62180013A (en) * 1986-02-04 1987-08-07 Nippon Kokan Kk <Nkk> Manufacture of nontemper high tension steel plate having low welding crack susceptibility

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59197523A (en) * 1983-04-19 1984-11-09 Sumitomo Metal Ind Ltd Manufacture of hot rolled steel plate for processing
JPS6230632A (en) * 1985-08-01 1987-02-09 Shinetsu Sekiei Kk Production of high-purity quartz glass
JPS62180013A (en) * 1986-02-04 1987-08-07 Nippon Kokan Kk <Nkk> Manufacture of nontemper high tension steel plate having low welding crack susceptibility

Also Published As

Publication number Publication date
JPH0158251B2 (en) 1989-12-11

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