JPS5451910A - Soaking method - Google Patents

Soaking method

Info

Publication number
JPS5451910A
JPS5451910A JP11886777A JP11886777A JPS5451910A JP S5451910 A JPS5451910 A JP S5451910A JP 11886777 A JP11886777 A JP 11886777A JP 11886777 A JP11886777 A JP 11886777A JP S5451910 A JPS5451910 A JP S5451910A
Authority
JP
Japan
Prior art keywords
steel
ingots
soaking
temp
soaking pit
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.)
Pending
Application number
JP11886777A
Other languages
Japanese (ja)
Inventor
Naohisa Tsuneyoshi
Yoshiyuki Okita
Makoto Inoue
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP11886777A priority Critical patent/JPS5451910A/en
Publication of JPS5451910A publication Critical patent/JPS5451910A/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/70—Furnaces for ingots, i.e. soaking pits

Abstract

PURPOSE:To greatly reduce the original unit of fuel for soaking, by lowering temp in a soaking pit and shortening retention time by utilizing recuperation by the heat accumulation of the inside of steel ingots when soaking the steel ingots of rimmed steel and semi-killed steel. CONSTITUTION:Since the track time of the steel ingots of rimmed steel and semi- killed steel is short, there exist non-coagulated portions at the insides of steel ingots at the time when the ingots are charged into a soaking pit, and the coagulation rate of the section is not more than 60%. Thus, since the insides of steel ingots have a large quantity of accumulated heat, the temp of the inside of the soaking pit is made to be the low temp of 1100-1250 deg.C. The retention time in the soaking pit is also shortened to 3 hrs.. Temp rises due to recuperation from non-coagulated portions at the insides of steel ingots, and the ingots can be blooming milled without having no effect on mill torque and deformability in blooming mill and without lowering mill yield. Thus, this method greatly reduces the original unit of fuel for the soaking pit per steel ingot.
JP11886777A 1977-10-03 1977-10-03 Soaking method Pending JPS5451910A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11886777A JPS5451910A (en) 1977-10-03 1977-10-03 Soaking method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11886777A JPS5451910A (en) 1977-10-03 1977-10-03 Soaking method

Publications (1)

Publication Number Publication Date
JPS5451910A true JPS5451910A (en) 1979-04-24

Family

ID=14747078

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11886777A Pending JPS5451910A (en) 1977-10-03 1977-10-03 Soaking method

Country Status (1)

Country Link
JP (1) JPS5451910A (en)

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