JPS572819A - Production of a -si killed molten steel - Google Patents

Production of a -si killed molten steel

Info

Publication number
JPS572819A
JPS572819A JP7734380A JP7734380A JPS572819A JP S572819 A JPS572819 A JP S572819A JP 7734380 A JP7734380 A JP 7734380A JP 7734380 A JP7734380 A JP 7734380A JP S572819 A JPS572819 A JP S572819A
Authority
JP
Japan
Prior art keywords
molten steel
vacuum
time
degassing treatment
production
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
JP7734380A
Other languages
Japanese (ja)
Other versions
JPS60404B2 (en
Inventor
Mutsumitsu Odera
Yasushi Nishino
Yoshiaki Takeda
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 JP55077343A priority Critical patent/JPS60404B2/en
Publication of JPS572819A publication Critical patent/JPS572819A/en
Publication of JPS60404B2 publication Critical patent/JPS60404B2/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/10—Handling in a vacuum

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To obtain molten steel of low hydrogen contents through degassing treatment of low degree of vacuum by adding Fe-Si and Fe-Mn to molten steel during tapping in such a manner that it contains prescribed amounts of Si and Mn. CONSTITUTION:At the time of tapping molten steel from the inside of a converter, Fe-Si and Fe-Mn are charged into the molten steel in such a manner that it contains 0.05-0.20% Si and <=2.0% Mn, whereby it is subjected to deoxidation controlling. Next, degassing treatment of more than one time of circulation number is applied to this molten steel by a vacuum degassing plant. Thence, components such as Al or other alloy elements are added in a vacuum. By the above-mentioned method, the degassing treatment time is reduced, and the yield and cost are improved.
JP55077343A 1980-06-09 1980-06-09 Method for producing Al-Si killed molten steel Expired JPS60404B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55077343A JPS60404B2 (en) 1980-06-09 1980-06-09 Method for producing Al-Si killed molten steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55077343A JPS60404B2 (en) 1980-06-09 1980-06-09 Method for producing Al-Si killed molten steel

Publications (2)

Publication Number Publication Date
JPS572819A true JPS572819A (en) 1982-01-08
JPS60404B2 JPS60404B2 (en) 1985-01-08

Family

ID=13631271

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55077343A Expired JPS60404B2 (en) 1980-06-09 1980-06-09 Method for producing Al-Si killed molten steel

Country Status (1)

Country Link
JP (1) JPS60404B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6465225A (en) * 1987-09-07 1989-03-10 Sumitomo Metal Ind Economical manufacture of flow phosphorus-high manganese steel
JPH06197831A (en) * 1992-12-30 1994-07-19 Akira Yamamoto Manufacture of container provided with support wall and suchlike container
CN103642979A (en) * 2013-12-13 2014-03-19 唐山国丰钢铁有限公司 Using method of silicon-aluminum alloy
KR20160062611A (en) * 2014-11-25 2016-06-02 동국제강주식회사 Method of controlling total oxygen for eaf operation
JP2020002461A (en) * 2018-06-26 2020-01-09 日本製鉄株式会社 Manufacturing method of killed steel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793000A (en) * 1972-06-12 1974-02-19 Nat Steel Corp Process for preparing killed low carbon steel and continuously casting the same, and the solidified steel shapes thus produced
JPS5290419A (en) * 1976-01-27 1977-07-29 Nisshin Steel Co Ltd Method of continuous casting of cast piece for cold rolled steel plate

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3793000A (en) * 1972-06-12 1974-02-19 Nat Steel Corp Process for preparing killed low carbon steel and continuously casting the same, and the solidified steel shapes thus produced
JPS5290419A (en) * 1976-01-27 1977-07-29 Nisshin Steel Co Ltd Method of continuous casting of cast piece for cold rolled steel plate

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6465225A (en) * 1987-09-07 1989-03-10 Sumitomo Metal Ind Economical manufacture of flow phosphorus-high manganese steel
JPH0510403B2 (en) * 1987-09-07 1993-02-09 Sumitomo Metal Ind
JPH06197831A (en) * 1992-12-30 1994-07-19 Akira Yamamoto Manufacture of container provided with support wall and suchlike container
CN103642979A (en) * 2013-12-13 2014-03-19 唐山国丰钢铁有限公司 Using method of silicon-aluminum alloy
KR20160062611A (en) * 2014-11-25 2016-06-02 동국제강주식회사 Method of controlling total oxygen for eaf operation
JP2020002461A (en) * 2018-06-26 2020-01-09 日本製鉄株式会社 Manufacturing method of killed steel

Also Published As

Publication number Publication date
JPS60404B2 (en) 1985-01-08

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