JPS57110612A - Vacuum refining method of low carbon, low nitrogen and high chromium steel - Google Patents

Vacuum refining method of low carbon, low nitrogen and high chromium steel

Info

Publication number
JPS57110612A
JPS57110612A JP18755980A JP18755980A JPS57110612A JP S57110612 A JPS57110612 A JP S57110612A JP 18755980 A JP18755980 A JP 18755980A JP 18755980 A JP18755980 A JP 18755980A JP S57110612 A JPS57110612 A JP S57110612A
Authority
JP
Japan
Prior art keywords
vacuum
steel
low
high chromium
chromium steel
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
JP18755980A
Other languages
Japanese (ja)
Other versions
JPS6040491B2 (en
Inventor
Hisafumi Otani
Yasuo Mihara
Hiroyuki Kakiuchi
Takashi Murai
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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 Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP18755980A priority Critical patent/JPS6040491B2/en
Publication of JPS57110612A publication Critical patent/JPS57110612A/en
Publication of JPS6040491B2 publication Critical patent/JPS6040491B2/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 reduce the contents of silicon in low carbon, low nitrogen, high chromium steel by charging calcareous raw material in the process of vacuum decarburization by oxygen blowing during vacuum refining of said steel. CONSTITUTION:The low carbon, low nitrogen, high chromium steel contg. <=0.0050wt% C, <=0.0100wt% N, 13-32wt% Cr is vacuum-refined with a strong stirring, vacuum ladle degassing, decarburizing installation. At this time, calcareous raw material is charged in the ragne of 4-20kg per ton of the molten steel to the extent of maintaining the slag basicity expressed in the weight ratio of CaO to the SiO2 in slag is kept at <=1.5 in a vacuum, decarburization process by oxygen blowing. Then, the content of silicon in the steel is reduced to <=0.15wt%.
JP18755980A 1980-12-29 1980-12-29 Vacuum refining method for low carbon, low nitrogen, high chromium steel Expired JPS6040491B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18755980A JPS6040491B2 (en) 1980-12-29 1980-12-29 Vacuum refining method for low carbon, low nitrogen, high chromium steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18755980A JPS6040491B2 (en) 1980-12-29 1980-12-29 Vacuum refining method for low carbon, low nitrogen, high chromium steel

Publications (2)

Publication Number Publication Date
JPS57110612A true JPS57110612A (en) 1982-07-09
JPS6040491B2 JPS6040491B2 (en) 1985-09-11

Family

ID=16208193

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18755980A Expired JPS6040491B2 (en) 1980-12-29 1980-12-29 Vacuum refining method for low carbon, low nitrogen, high chromium steel

Country Status (1)

Country Link
JP (1) JPS6040491B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62227029A (en) * 1986-03-28 1987-10-06 Sumitomo Metal Ind Ltd Production of clean steel
CN103468877A (en) * 2013-08-02 2013-12-25 南京钢铁股份有限公司 Vacuum refining process for molten steel
CN113215475A (en) * 2021-03-26 2021-08-06 舞阳钢铁有限责任公司 Production method for controlling nitrogen and impurities of high-alloy steel

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NO163384C (en) * 1987-12-18 1990-05-16 Norsk Hydro As PROCEDURE FOR AUTOMATIC PARTICLE ANALYSIS AND DEVICE FOR ITS PERFORMANCE.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62227029A (en) * 1986-03-28 1987-10-06 Sumitomo Metal Ind Ltd Production of clean steel
JPH0469207B2 (en) * 1986-03-28 1992-11-05 Sumitomo Kinzoku Kogyo Kk
CN103468877A (en) * 2013-08-02 2013-12-25 南京钢铁股份有限公司 Vacuum refining process for molten steel
CN113215475A (en) * 2021-03-26 2021-08-06 舞阳钢铁有限责任公司 Production method for controlling nitrogen and impurities of high-alloy steel

Also Published As

Publication number Publication date
JPS6040491B2 (en) 1985-09-11

Similar Documents

Publication Publication Date Title
ES8302787A1 (en) Process for refining high-chromium steels
JPS57110612A (en) Vacuum refining method of low carbon, low nitrogen and high chromium steel
JPS572813A (en) Production of decarbonized and melted stainless steel
DE3567031D1 (en) Process for refining pig iron
ES8402355A1 (en) Process for producing steel in a converter from pig iron and ferrous scrap.
JPS5432119A (en) Refining method for high chromium steel
JPS5768253A (en) Production of high carbon steel wire rod
JPS56130416A (en) Steel making method
JPS5760004A (en) Converter refining method
JPS57158316A (en) Production of al-containing steel
JPS5741312A (en) Decarburization refining method of high chromium steel
JPS55107715A (en) Blowing method of dephosphorizer to bottom blowing converter
JPS6487708A (en) Manufacture of high manganese steel by refining
JPS5719317A (en) Refining method for stainless steel
JPS57155314A (en) Refining of high-cr steel
Wayne The VAD Process
JPS5594415A (en) Steel making method of less slag producing amount
JPS6436717A (en) Method for preventing flowing-out of slag in converter
JPS5371615A (en) Method and apparatus for continuously decarburizing hot iron
JPS5475418A (en) Hot iron dephosphorization method
JPS5754215A (en) Method of refining with slag minimized by using combined flux
JPS5594416A (en) Weighed tapping method
Ueda et al. Sumitomo's SARP(Sumitomo Alkali Refining or Slag All Recycling) Process
Taskinen et al. Slag Pretreatment for Simultaneous Dephosphorization and Desulphurization of Hot Metal
JPS56166315A (en) Dephosphorizing and desulfurizing method for molten iron