JPS572813A - Production of decarbonized and melted stainless steel - Google Patents

Production of decarbonized and melted stainless steel

Info

Publication number
JPS572813A
JPS572813A JP7607980A JP7607980A JPS572813A JP S572813 A JPS572813 A JP S572813A JP 7607980 A JP7607980 A JP 7607980A JP 7607980 A JP7607980 A JP 7607980A JP S572813 A JPS572813 A JP S572813A
Authority
JP
Japan
Prior art keywords
refining
converter
melting
raw materials
oxygen
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
JP7607980A
Other languages
Japanese (ja)
Inventor
Bunji Eto
Takeo Iwata
Shingo Sato
Isao Suzuki
Noriyuki Masumitsu
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 JP7607980A priority Critical patent/JPS572813A/en
Publication of JPS572813A publication Critical patent/JPS572813A/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
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/005—Manufacture of stainless steel

Abstract

PURPOSE:To reduce slag sources entering the inside of furnace and reduce the treatment time for secondary refining by carrying out primary refining by blowing carbonaceous powder and oxygen to the molten iron of low silicon and low phosphorus in a converter and fuuther carrying out secondary refining. CONSTITUTION:The molten steel of low silicon and low phosphorus obtained by desiliconization and dephosphorization is charged into a converter and chromium sources and the like are added to this. Next, carbonaceous powder is blown through the tuyere installed under the molten metal surface of the converter, and at this same instant, oxygen refining by top blowing is carried out, whereby melting and decarburization refining of solid raw materials are accomplished. Then, the chromium-contg. molten metal obtained by melting these solid raw materials is subjected to decarbonization and composition control by using a vacuum decarbonizing device.
JP7607980A 1980-06-07 1980-06-07 Production of decarbonized and melted stainless steel Pending JPS572813A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7607980A JPS572813A (en) 1980-06-07 1980-06-07 Production of decarbonized and melted stainless steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7607980A JPS572813A (en) 1980-06-07 1980-06-07 Production of decarbonized and melted stainless steel

Publications (1)

Publication Number Publication Date
JPS572813A true JPS572813A (en) 1982-01-08

Family

ID=13594801

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7607980A Pending JPS572813A (en) 1980-06-07 1980-06-07 Production of decarbonized and melted stainless steel

Country Status (1)

Country Link
JP (1) JPS572813A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5989931A (en) * 1982-11-12 1984-05-24 Matsushita Electric Ind Co Ltd High-frequency heater
JPS59104415A (en) * 1982-12-02 1984-06-16 Nippon Steel Corp Method for melting chromium-containing scrap by using powdery carbonaceous substance as heat source
JPS59104417A (en) * 1982-12-06 1984-06-16 Nippon Steel Corp Preparation of stainless steel
JPS6250403A (en) * 1985-08-29 1987-03-05 Kobe Steel Ltd Production of high-carbon chromium bearing steel
CN104294009A (en) * 2013-07-16 2015-01-21 上海宝锋工程技术有限公司 Top and bottom combined blowing method for desilicication smelting of stainless steel
CN112442569A (en) * 2020-11-20 2021-03-05 新疆八一钢铁股份有限公司 Operation method for efficiently recycling chromium element
CN112481549A (en) * 2020-10-21 2021-03-12 南京钢铁股份有限公司 Preparation method of GCr15 bearing steel

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5432119A (en) * 1977-08-17 1979-03-09 Sumitomo Metal Ind Ltd Refining method for high chromium steel
JPS54158320A (en) * 1978-06-03 1979-12-14 Nippon Steel Corp Refining method for high chromium steel

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5432119A (en) * 1977-08-17 1979-03-09 Sumitomo Metal Ind Ltd Refining method for high chromium steel
JPS54158320A (en) * 1978-06-03 1979-12-14 Nippon Steel Corp Refining method for high chromium steel

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5989931A (en) * 1982-11-12 1984-05-24 Matsushita Electric Ind Co Ltd High-frequency heater
JPH038448B2 (en) * 1982-11-12 1991-02-06 Matsushita Electric Ind Co Ltd
JPS59104415A (en) * 1982-12-02 1984-06-16 Nippon Steel Corp Method for melting chromium-containing scrap by using powdery carbonaceous substance as heat source
JPS59104417A (en) * 1982-12-06 1984-06-16 Nippon Steel Corp Preparation of stainless steel
JPS6250403A (en) * 1985-08-29 1987-03-05 Kobe Steel Ltd Production of high-carbon chromium bearing steel
JPS6331525B2 (en) * 1985-08-29 1988-06-24 Kobe Steel Ltd
CN104294009A (en) * 2013-07-16 2015-01-21 上海宝锋工程技术有限公司 Top and bottom combined blowing method for desilicication smelting of stainless steel
CN104294009B (en) * 2013-07-16 2016-03-30 上海宝锋工程技术有限公司 For the top bottom blowing method that stainless steel desiliconization is smelted
CN112481549A (en) * 2020-10-21 2021-03-12 南京钢铁股份有限公司 Preparation method of GCr15 bearing steel
CN112442569A (en) * 2020-11-20 2021-03-05 新疆八一钢铁股份有限公司 Operation method for efficiently recycling chromium element

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