GB1136758A - Improvements in the manufacture of low-carbon steel - Google Patents

Improvements in the manufacture of low-carbon steel

Info

Publication number
GB1136758A
GB1136758A GB5446465A GB5446465A GB1136758A GB 1136758 A GB1136758 A GB 1136758A GB 5446465 A GB5446465 A GB 5446465A GB 5446465 A GB5446465 A GB 5446465A GB 1136758 A GB1136758 A GB 1136758A
Authority
GB
United Kingdom
Prior art keywords
steel
vacuum
vacuum treatment
dec
carbon
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
GB5446465A
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.)
Fried Krupp Huettenwerke AG
Original Assignee
Fried Krupp Huettenwerke AG
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
Priority claimed from DE1965B0080054 external-priority patent/DE1458811C2/en
Application filed by Fried Krupp Huettenwerke AG filed Critical Fried Krupp Huettenwerke AG
Publication of GB1136758A publication Critical patent/GB1136758A/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
    • C21C7/0081—Treating and handling under pressure

Abstract

1,136,758. Producing low-carbon steel. FRIED. KRUPP HUTTENWERKE A. G. Dec. 22, 1965 [Dec.23, 1964; Jan. 9, 1965], No.54464/65. Addition to 1, 014, 103. Heading C7D. Steel is conventionally produced with a carbon content in the range 0À03 - 0À12%, or appropriately more where an oxidizing agent is added to the bath, and is then tapped in the unkilled state, the steel being subjected to vacuum during tapping. A second vacuum treatment follows, whereby the carbon content of the steel is reduced to below 0À008%, or preferably less than 0À005%; this second step may employ any of the known methods of vacuum treatment. Oxygen or an oxygenreleasing substance such as carbon dioxide may be present during either or both of the vacuum treatment steps, preferably in an amount such that there is an oxygen partial pressure of 1 to 20 mm. of mercury in the free vacuum space, while after decarburization is complete alloying elements such as aluminium and silicon may be added under vacuum. The second vacuum treatment step may itself be divided into two stages, an oxidizing agent being employed in the first stage to effect decarburization, followed by use of an inert gas for degasification and possibly alloying.
GB5446465A 1964-12-23 1965-12-22 Improvements in the manufacture of low-carbon steel Expired GB1136758A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEB0079869 1964-12-23
DE1965B0080054 DE1458811C2 (en) 1965-01-09 1965-01-09 Process for the production of low carbon steels

Publications (1)

Publication Number Publication Date
GB1136758A true GB1136758A (en) 1968-12-18

Family

ID=25967340

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5446465A Expired GB1136758A (en) 1964-12-23 1965-12-22 Improvements in the manufacture of low-carbon steel

Country Status (4)

Country Link
AT (1) AT307469B (en)
GB (1) GB1136758A (en)
LU (1) LU50135A1 (en)
NL (1) NL6516818A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2281312A (en) * 1993-08-20 1995-03-01 Leybold Durferrit Gmbh Process for decarburizing carbon-containing molten metal

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2281312A (en) * 1993-08-20 1995-03-01 Leybold Durferrit Gmbh Process for decarburizing carbon-containing molten metal
GB2281312B (en) * 1993-08-20 1997-04-23 Leybold Durferrit Gmbh Process for decarburizing carbon-containing molten metal

Also Published As

Publication number Publication date
NL6516818A (en) 1966-06-24
LU50135A1 (en) 1966-02-23
AT307469B (en) 1973-05-25

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