GB1308607A - Treatment of molten steel - Google Patents

Treatment of molten steel

Info

Publication number
GB1308607A
GB1308607A GB1965669A GB1308607DA GB1308607A GB 1308607 A GB1308607 A GB 1308607A GB 1965669 A GB1965669 A GB 1965669A GB 1308607D A GB1308607D A GB 1308607DA GB 1308607 A GB1308607 A GB 1308607A
Authority
GB
United Kingdom
Prior art keywords
steel
april
treatment
molten steel
teeming
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.)
Expired
Application number
GB1965669A
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.)
GKN Group Services Ltd
Original Assignee
GKN Group Services 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 GKN Group Services Ltd filed Critical GKN Group Services Ltd
Publication of GB1308607A publication Critical patent/GB1308607A/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
    • 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
    • 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
    • C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal
    • 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
    • C21C7/0006—Adding metallic additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

1308607 Steel of improved hardenability GKN GROUP SERVICES Ltd 15 April 1970 [17 April 1969] 19656/69 Headings C7A and C7D Prior to teeming the steel is heated so that the whole of the melt is above 1675‹C, and is maintained above that temperature for about 2 to 30 minutes, after which aluminium and/or titanium are added prior to or during teeming; the additions may be such as to produce final contents of 0À03-0À1% Al and 0À03% Ti. A preferred steel composition contains C 0À36 - 0À45 Mn 1À5 - 2 Si 0À25 - 0À5 Cr 0À2 - 0À3 Ni 0À15 - 0À3 Mo 0À1 - 0À15 S 0À01 - 0À05 P 0À01 - 0À05 Cu 0À0 - 0À25 Sn 0À0 - 0À03 and is so balanced that the parameter -1À37587 + (1À02692 Î Si%) + (0À49025 x Cu%) + (0À50216 Î Mn%) + (2À38480 x C%) + (0À35889 x Cr%) + (1À07513 x Mo%) - (0À05591 Î BS gram size number) - (2À46496 Î S%) + (0À48334 Î Ni%) + (3À3767 x P%) - (0À59522 Î Sn%) is not less than 0À8.
GB1965669A 1969-04-17 1969-04-17 Treatment of molten steel Expired GB1308607A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1965669 1969-04-17

Publications (1)

Publication Number Publication Date
GB1308607A true GB1308607A (en) 1973-02-21

Family

ID=10132986

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1965669A Expired GB1308607A (en) 1969-04-17 1969-04-17 Treatment of molten steel

Country Status (4)

Country Link
US (1) US3690868A (en)
JP (1) JPS5428369B1 (en)
DE (1) DE2018561B2 (en)
GB (1) GB1308607A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5094923A (en) * 1990-04-24 1992-03-10 Kennametal Inc. Air hardening steel
CA2686093C (en) 2007-04-16 2018-05-08 Corium International, Inc. Solvent-cast microneedle arrays containing active

Also Published As

Publication number Publication date
JPS5428369B1 (en) 1979-09-17
DE2018561B2 (en) 1975-11-13
DE2018561A1 (en) 1971-10-14
US3690868A (en) 1972-09-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee