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GB931404A - Manufacture of transformer steels - Google Patents

Manufacture of transformer steels

Info

Publication number
GB931404A
GB931404A GB2571959A GB2571959A GB931404A GB 931404 A GB931404 A GB 931404A GB 2571959 A GB2571959 A GB 2571959A GB 2571959 A GB2571959 A GB 2571959A GB 931404 A GB931404 A GB 931404A
Authority
GB
United Kingdom
Prior art keywords
manufacture
stirring
stopper
steels
transformer
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
GB2571959A
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.)
Vodafone GmbH
Original Assignee
Mannesmann 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
Application filed by Mannesmann AG filed Critical Mannesmann AG
Publication of GB931404A publication Critical patent/GB931404A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D1/00—Treatment of fused masses in the ladle or the supply runners before casting
    • B22D1/002—Treatment with gases
    • B22D1/005—Injection assemblies therefor
    • 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
    • C21C7/04—Removing impurities by adding a treating agent
    • C21C7/072—Treatment with gases

Landscapes

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

Abstract

A method of making high-grade transformer steel comprises introducing slag-free molten steel into a ladle, deoxidizing and/or alloying with silicon and/or aluminium, and stirring the melt by means of an inert gas passed therethrough. The gas may be introduced through a porous body introduced at an off-centre position or may be supplied through a hollow stopper rod having a plurality of small bores above the connection with the stopper. The stirring operation may be performed in a vacuum chamber.
GB2571959A 1958-08-01 1959-07-27 Manufacture of transformer steels Expired GB931404A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0038483 1958-08-01

Publications (1)

Publication Number Publication Date
GB931404A true GB931404A (en) 1963-07-17

Family

ID=7303112

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2571959A Expired GB931404A (en) 1958-08-01 1959-07-27 Manufacture of transformer steels

Country Status (1)

Country Link
GB (1) GB931404A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3392009A (en) * 1965-10-23 1968-07-09 Union Carbide Corp Method of producing low carbon, non-aging, deep drawing steel

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3392009A (en) * 1965-10-23 1968-07-09 Union Carbide Corp Method of producing low carbon, non-aging, deep drawing steel

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