JPS57161016A - Refining method of low sulfur high chromium steel - Google Patents

Refining method of low sulfur high chromium steel

Info

Publication number
JPS57161016A
JPS57161016A JP4563681A JP4563681A JPS57161016A JP S57161016 A JPS57161016 A JP S57161016A JP 4563681 A JP4563681 A JP 4563681A JP 4563681 A JP4563681 A JP 4563681A JP S57161016 A JPS57161016 A JP S57161016A
Authority
JP
Japan
Prior art keywords
cac2
steel
contg
slag
sio2
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
JP4563681A
Other languages
Japanese (ja)
Other versions
JPS6152208B2 (en
Inventor
Masatoshi Kuwabara
Hiroyuki Katayama
Yoshiharu Nakane
Jiro Ide
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 JP4563681A priority Critical patent/JPS57161016A/en
Publication of JPS57161016A publication Critical patent/JPS57161016A/en
Publication of JPS6152208B2 publication Critical patent/JPS6152208B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

Abstract

PURPOSE:To obtain low sulfur high chromium steel efficiently at a low cost by adding CaC2 to molten middle-carbon-content chromium steel of a prescribed Cr/C ratio in the presence of a prescribed CaO/SiO2 ratio thereby desulfurizing the same. CONSTITUTION:Chromium-contg. raw materials consisting essentially of high carbon ferrochromium lumps are melted, whereby molten middle carbon ferrochromium steel of 10-40 Cr/C and SiO2-contg. slag are made. Said slag of this case is controlled to basicity, that is, >=1.2 CaO/SiO2. Thence, an Si-contg. alloy (e.g.; ferrosilicon) is added to the molten metal in this state to reduce the Cr2O3 content in the slag, after which CaC2 is added to desufurize the steel. The addition of CaC2 decreases the original unit of CaC2 considerably by blowing CaC2 together with a carrier gas or Ar or the like into the molten metal in particular.
JP4563681A 1981-03-30 1981-03-30 Refining method of low sulfur high chromium steel Granted JPS57161016A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4563681A JPS57161016A (en) 1981-03-30 1981-03-30 Refining method of low sulfur high chromium steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4563681A JPS57161016A (en) 1981-03-30 1981-03-30 Refining method of low sulfur high chromium steel

Publications (2)

Publication Number Publication Date
JPS57161016A true JPS57161016A (en) 1982-10-04
JPS6152208B2 JPS6152208B2 (en) 1986-11-12

Family

ID=12724843

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4563681A Granted JPS57161016A (en) 1981-03-30 1981-03-30 Refining method of low sulfur high chromium steel

Country Status (1)

Country Link
JP (1) JPS57161016A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59108854U (en) * 1983-01-13 1984-07-23 シャープ株式会社 Planetary gear unit mounting device
EP0330482A2 (en) * 1988-02-24 1989-08-30 Kawasaki Steel Corporation Method for producing chromium containing molten iron with low sulphur concentration

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0536165Y2 (en) * 1987-07-31 1993-09-13

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59108854U (en) * 1983-01-13 1984-07-23 シャープ株式会社 Planetary gear unit mounting device
EP0330482A2 (en) * 1988-02-24 1989-08-30 Kawasaki Steel Corporation Method for producing chromium containing molten iron with low sulphur concentration

Also Published As

Publication number Publication date
JPS6152208B2 (en) 1986-11-12

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