JPS579823A - Production of mild steel ingot for bar and wire by continuous casting - Google Patents

Production of mild steel ingot for bar and wire by continuous casting

Info

Publication number
JPS579823A
JPS579823A JP8345680A JP8345680A JPS579823A JP S579823 A JPS579823 A JP S579823A JP 8345680 A JP8345680 A JP 8345680A JP 8345680 A JP8345680 A JP 8345680A JP S579823 A JPS579823 A JP S579823A
Authority
JP
Japan
Prior art keywords
molten steel
converter
casting
deoxidation
produced
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
JP8345680A
Other languages
Japanese (ja)
Inventor
Shujiro Ono
Yoshimasa Yoshii
Nobuo Abumi
Takeshi Sugawara
Noboru Okuyama
Kazuo Ishiyama
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 JP8345680A priority Critical patent/JPS579823A/en
Publication of JPS579823A publication Critical patent/JPS579823A/en
Pending 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)
  • Continuous Casting (AREA)
  • Treatment Of Steel In Its Molten State (AREA)

Abstract

PURPOSE:To produce a titled ingot superior in quality and characteristics by subjecting the molten steel produced to have specific tapping C% in a converter to vacuum deoxidation then to Al auxiliary deoxidation and continuously casting the same at specific speeds while preventing the formation of air bubbles. CONSTITUTION:The molten steel produced to have product target C%+0.02- 0.05% tapping C% in a converter is subjected to vacuum degassing treatment. By this treatment, the deoxidation by C+O reaction is progressed at far as possible in the molten steel under reduced pressure. Thence, further the remained free O is deoxidized by a small amount of Al, to control the entire O at 40-90ppm. Next, this molten steel is continuously cast at >=0.8m/min casting speeds so that the formation of air bubbles by the C+O reaction during casting is prevented. In this case, the mild steel ingot (C<=0.25%) for bars and wires of superior drawability, suitability for cold forging, machineability, etc. is produced by the converter-vacuum degassing treatment-continuous casting.
JP8345680A 1980-06-21 1980-06-21 Production of mild steel ingot for bar and wire by continuous casting Pending JPS579823A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8345680A JPS579823A (en) 1980-06-21 1980-06-21 Production of mild steel ingot for bar and wire by continuous casting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8345680A JPS579823A (en) 1980-06-21 1980-06-21 Production of mild steel ingot for bar and wire by continuous casting

Publications (1)

Publication Number Publication Date
JPS579823A true JPS579823A (en) 1982-01-19

Family

ID=13802950

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8345680A Pending JPS579823A (en) 1980-06-21 1980-06-21 Production of mild steel ingot for bar and wire by continuous casting

Country Status (1)

Country Link
JP (1) JPS579823A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6730643B2 (en) 2001-07-23 2004-05-04 Unilever Home & Personal Care Usa Division Of Conopco, Inc. Detergent bar and a process for manufacture
CN106583676A (en) * 2016-12-29 2017-04-26 江苏沙钢集团淮钢特钢股份有限公司 Carbon segregation control method for continuous casting round billet for vehicle wheel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5438567A (en) * 1977-08-31 1979-03-23 Matsushita Electric Works Ltd Deionizer
JPS5497520A (en) * 1978-01-19 1979-08-01 Sumitomo Metal Ind Ltd Production of steel to be enameled

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5438567A (en) * 1977-08-31 1979-03-23 Matsushita Electric Works Ltd Deionizer
JPS5497520A (en) * 1978-01-19 1979-08-01 Sumitomo Metal Ind Ltd Production of steel to be enameled

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6730643B2 (en) 2001-07-23 2004-05-04 Unilever Home & Personal Care Usa Division Of Conopco, Inc. Detergent bar and a process for manufacture
CN106583676A (en) * 2016-12-29 2017-04-26 江苏沙钢集团淮钢特钢股份有限公司 Carbon segregation control method for continuous casting round billet for vehicle wheel

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