GB1311156A - Steel making method and apparatus - Google Patents

Steel making method and apparatus

Info

Publication number
GB1311156A
GB1311156A GB2574570A GB2574570A GB1311156A GB 1311156 A GB1311156 A GB 1311156A GB 2574570 A GB2574570 A GB 2574570A GB 2574570 A GB2574570 A GB 2574570A GB 1311156 A GB1311156 A GB 1311156A
Authority
GB
United Kingdom
Prior art keywords
steel
ladle
making method
steel making
molten 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.)
Expired
Application number
GB2574570A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1311156A publication Critical patent/GB1311156A/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
    • C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
    • C21C7/0043—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material into the falling stream of molten metal
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/60—Ferrous alloys, e.g. steel alloys containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight of sulfur

Landscapes

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

Abstract

1311156 Adding lead to molten steel J J A ORMAECHEA 28 May 1970 [3 Feb 1970 25745/70 Heading C7D A machinable Pb-bearing steel is made by adding solid or liquid Pb to a stream of molten steel directly after it leaves a melting furnace during discharge to a ladle, preferably at a temperature more than 1600‹C. The Pb reacts with O 2 in the steel to form PbO 2 which precipitates as a fine homogeneous dispersion as the temperature drops below 1600‹C. in the ladle. Preferably the steel is allowed to stand in the ladle for at least 5 minutes, then Al killed, before it is poured or tapped into a mould. The quantity of Pb added is preferably 40% greater than that desired to incorporate, e.g. 0À1-0À8% homogeneously distributed, in the steel.
GB2574570A 1970-02-03 1970-05-28 Steel making method and apparatus Expired GB1311156A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES376188A ES376188A1 (en) 1970-02-03 1970-02-03 Method of producing lead bead bearing steel

Publications (1)

Publication Number Publication Date
GB1311156A true GB1311156A (en) 1973-03-21

Family

ID=8455007

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2574570A Expired GB1311156A (en) 1970-02-03 1970-05-28 Steel making method and apparatus

Country Status (11)

Country Link
US (1) US3756805A (en)
AT (1) AT322598B (en)
BE (1) BE762489A (en)
CH (1) CH545855A (en)
DE (2) DE2012668A1 (en)
ES (1) ES376188A1 (en)
FR (1) FR2079204A1 (en)
GB (1) GB1311156A (en)
LU (1) LU62493A1 (en)
NL (1) NL7101331A (en)
SE (1) SE382829B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3917240A (en) * 1971-08-02 1975-11-04 Sumitomo Metal Ind Apparatus for projecting pieces of a deoxidizing agent into molten steel
AT345491B (en) * 1976-12-10 1978-09-25 Voest Ag DEVICE FOR ADDING ADDITIVES INTO A CAST METAL JET
DE2730045C2 (en) * 1977-07-02 1984-11-08 Krupp Stahl Ag, 4630 Bochum Process for producing wear-resistant rails and / or wheel materials
SE7714561L (en) * 1977-12-21 1979-06-22 Uddeholms Ab WAY TO PRODUCE A LEAD ALLOY STEEL AND ACCORDING TO THE WAY OF MANUFACTURED STEEL
US4371395A (en) * 1981-07-06 1983-02-01 Southwire Company Technique for adding lead to steel
JPS63123554A (en) * 1986-11-14 1988-05-27 Nippon Steel Corp Production of free cutting steel
US4751047A (en) * 1987-05-26 1988-06-14 Nippon Steel Corporation Method of adding low-melting-point metal to molten steel
US4849167A (en) * 1988-03-18 1989-07-18 Inland Steel Company Method and appartus for adding liquid alloying ingredient to molten steel
US4848755A (en) * 1988-03-18 1989-07-18 Inland Steel Company Apparatus for adding liquid alloying ingredient to molten steel

Also Published As

Publication number Publication date
US3756805A (en) 1973-09-04
BE762489A (en) 1971-07-16
DE2012668A1 (en) 1971-08-12
AT322598B (en) 1975-05-26
CH545855A (en) 1974-02-15
SE382829B (en) 1976-02-16
NL7101331A (en) 1971-08-05
LU62493A1 (en) 1971-08-11
DE2065802A1 (en) 1976-03-11
FR2079204A1 (en) 1971-11-12
ES376188A1 (en) 1972-03-16

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
433D Application made for revocation (sect. 33/1949)
434A Offer to surrender (sect. 34/1949)
433 Proceeding terminated by voluntary surrender of the patent (sect. 33/1949)
434C Patent revoked (sect. 34/1949)
PLNP Patent lapsed through nonpayment of renewal fees