JPS55125221A - Production of low-carbon stainless steel by plasma arc melting - Google Patents

Production of low-carbon stainless steel by plasma arc melting

Info

Publication number
JPS55125221A
JPS55125221A JP3336279A JP3336279A JPS55125221A JP S55125221 A JPS55125221 A JP S55125221A JP 3336279 A JP3336279 A JP 3336279A JP 3336279 A JP3336279 A JP 3336279A JP S55125221 A JPS55125221 A JP S55125221A
Authority
JP
Japan
Prior art keywords
gas
plasma
plasma arc
stainless steel
partial pressure
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
JP3336279A
Other languages
Japanese (ja)
Other versions
JPS5733324B2 (en
Inventor
Saburo Sugiura
Michihiko Fujine
Shizunori Hayakawa
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 JP3336279A priority Critical patent/JPS55125221A/en
Publication of JPS55125221A publication Critical patent/JPS55125221A/en
Publication of JPS5733324B2 publication Critical patent/JPS5733324B2/ja
Granted legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Landscapes

  • Treatment Of Steel In Its Molten State (AREA)
  • Furnace Details (AREA)

Abstract

PURPOSE: To remove and refine C, N and other impurites while reducing the consumption of plasma torch electrode by decreasing stepwise the oxygen partial pressure in inert gas as plasma working gas at the time of refining low-carbon stainless steel by a plasma arc melting method.
CONSTITUTION: Steel scrap, return scrap, Fe-Cr, Fe-Ni are charged into the crucible 7 in the plasma arc furnace and a furnace cover 8 is put on. After Ar gas is fed into a melting chamber 12 from an Ar gas cylinder 18, the charged raw material is melted by supplying current to an induction coil 9. The molten slag formed at this time is removed, after which CaO-Al2O3-base flux is charged from a storage tank 15 and while the mixed gases of O2 partial pressure 0.5atm are being flowed by Ar gas and the O2 gas from a cylinder 22, plasma arc is formed between a plasma torck 16 and molten metal M, whereby the molten metal is heated and its impurities such as C, N, Pb, Sn and Zn are oxidation-removed. The slag is renewed and the oxygen partial pressure is decreased along with the progression of the refining, whereby the refining is repeated and the high-quality stainless steel is provided without oxidizing Cr and consuming the plasma torch 16.
COPYRIGHT: (C)1980,JPO&Japio
JP3336279A 1979-03-23 1979-03-23 Production of low-carbon stainless steel by plasma arc melting Granted JPS55125221A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3336279A JPS55125221A (en) 1979-03-23 1979-03-23 Production of low-carbon stainless steel by plasma arc melting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3336279A JPS55125221A (en) 1979-03-23 1979-03-23 Production of low-carbon stainless steel by plasma arc melting

Publications (2)

Publication Number Publication Date
JPS55125221A true JPS55125221A (en) 1980-09-26
JPS5733324B2 JPS5733324B2 (en) 1982-07-16

Family

ID=12384466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3336279A Granted JPS55125221A (en) 1979-03-23 1979-03-23 Production of low-carbon stainless steel by plasma arc melting

Country Status (1)

Country Link
JP (1) JPS55125221A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013014A (en) * 1983-06-30 1985-01-23 Ishikawajima Harima Heavy Ind Co Ltd Ladle refining device
FR2796517A1 (en) * 1999-07-12 2001-01-19 Air Liquide Method for reducing nitrogen oxides (NOx) emitted by plasma torch operating in air, has air supply partially replaced by a mixture with reduced oxygen content
KR101188326B1 (en) 2010-11-05 2012-10-09 주식회사 포스코 Method of molten metal refining
CN114959423A (en) * 2022-06-07 2022-08-30 甘肃酒钢集团宏兴钢铁股份有限公司 Smelting method of high-silicon titanium-containing austenitic stainless steel

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6013014A (en) * 1983-06-30 1985-01-23 Ishikawajima Harima Heavy Ind Co Ltd Ladle refining device
FR2796517A1 (en) * 1999-07-12 2001-01-19 Air Liquide Method for reducing nitrogen oxides (NOx) emitted by plasma torch operating in air, has air supply partially replaced by a mixture with reduced oxygen content
KR101188326B1 (en) 2010-11-05 2012-10-09 주식회사 포스코 Method of molten metal refining
CN114959423A (en) * 2022-06-07 2022-08-30 甘肃酒钢集团宏兴钢铁股份有限公司 Smelting method of high-silicon titanium-containing austenitic stainless steel
CN114959423B (en) * 2022-06-07 2023-04-14 甘肃酒钢集团宏兴钢铁股份有限公司 Smelting method of high-silicon titanium-containing austenitic stainless steel

Also Published As

Publication number Publication date
JPS5733324B2 (en) 1982-07-16

Similar Documents

Publication Publication Date Title
GB1501132A (en) Electroslag casting of a metal roll
JPS5681655A (en) Refining method for medium-carbon high-chromium molten metal
JPS55125221A (en) Production of low-carbon stainless steel by plasma arc melting
US3723630A (en) Method for the plasma-ac remelting of a consumable metal bar in a controlled atmosphere
ES8207587A1 (en) Selective reduction of heavy metals
US5514331A (en) Method and device for producing stainless steel
US4133967A (en) Two-stage electric arc - electroslag process and apparatus for continuous steelmaking
FI70258B (en) FOERFARANDE FOER RAFFINERING AV FERROKROMMETALL
GB1470796A (en) Method and apparatus for the continuous production of steel
US3736361A (en) Method for the plasma remelting of a consumable metal bar in a controlled atmosphere
JPS57120629A (en) Refining method
JPS5623239A (en) Manufacture of chromium or chromium alloy ingot
JPS5747841A (en) Method and apparatus for remelting and refining metal with arc of consumption type hollow electrode
JPS6466056A (en) Mold powder for continuous casting
US2971834A (en) Process in selective reduction of chrome ore
RU2278169C2 (en) Method for production of chromium-manganese stainless steel
US4540433A (en) Treatment of ferromanganese
SU1275048A1 (en) Method of steel deoxidation in electric furnaces
SU1073299A1 (en) Stainless steel production process
SU506186A1 (en) Method of melting stainless steels
RU2032754C1 (en) Method for manufacture of roll
SU964003A1 (en) Method for blast furnace smelting
RU2061069C1 (en) Method of processing of slags of copper-smelting
KR860003353A (en) Method of refining molten steel by arc processing
Borodin et al. The Production of Corrosion-Resisting Steel With Vacuum Decarburization