JPS566704A - Hot width-gauge control rolling method for cast slab of middle and low carbon steel - Google Patents

Hot width-gauge control rolling method for cast slab of middle and low carbon steel

Info

Publication number
JPS566704A
JPS566704A JP8075779A JP8075779A JPS566704A JP S566704 A JPS566704 A JP S566704A JP 8075779 A JP8075779 A JP 8075779A JP 8075779 A JP8075779 A JP 8075779A JP S566704 A JPS566704 A JP S566704A
Authority
JP
Japan
Prior art keywords
low carbon
carbon steel
billet
cracks
gauge control
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.)
Granted
Application number
JP8075779A
Other languages
Japanese (ja)
Other versions
JPH0112561B2 (en
Inventor
Fujio Fujisawa
Shigeru Hayano
Kazuaki Ezaka
Shigenori Tanaka
Hiroo Suzuki
Kazuo Watanabe
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
Nippon Steel Corp
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 Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP8075779A priority Critical patent/JPS566704A/en
Priority to DE19803023723 priority patent/DE3023723A1/en
Publication of JPS566704A publication Critical patent/JPS566704A/en
Publication of JPH0112561B2 publication Critical patent/JPH0112561B2/ja
Granted legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
    • B21B1/02—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling heavy work, e.g. ingots, slabs, blooms, or billets, in which the cross-sectional form is unimportant ; Rolling combined with forging or pressing
    • B21B1/026—Rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/12—Accessories for subsequent treating or working cast stock in situ
    • B22D11/1206—Accessories for subsequent treating or working cast stock in situ for plastic shaping of strands

Abstract

PURPOSE: To make the high rate width-gauge control rolling possible to prevent the generation of cracks, by continuously casting the specified middle and low carbon steel while continuing the moderate slow cooling from the start till arriving at the just front of the warming zone, and next, by warming the billet at the specified temperature region, and then, by carrying out the hot rolling pass.
CONSTITUTION: The middle and low carbon steel, containing 0.01W0.25% C, ≤150ppm O2, ≤0.03% S, and ≥10 Mn/S ratio, is continuously cast while continuing the moderate slow cooling at the ≤1°C/sec rate from the start till arriving at the just front of the warming zone. Following to this, this steel billet is warmed at a temperature range regulated to 950W1,300°C for at least 10min; after that, this steel billet is hot rolled at a rate 50mm or larger/one pass for one side. According to this constitution, the sheet type precipitation to be the cause of the rolling cracks can be perfectly spheroidized and the fine spheroidal precipitations can be made coarse spheroidal particles; hereby, even if the hot rolling for the high rate with reducing is applied to this billet, the generation of both of surface flaws and internal cracks can be prevented.
COPYRIGHT: (C)1981,JPO&Japio
JP8075779A 1979-06-28 1979-06-28 Hot width-gauge control rolling method for cast slab of middle and low carbon steel Granted JPS566704A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP8075779A JPS566704A (en) 1979-06-28 1979-06-28 Hot width-gauge control rolling method for cast slab of middle and low carbon steel
DE19803023723 DE3023723A1 (en) 1979-06-28 1980-06-25 Continuously cast and hot rolled semi-finished steel prods. - using controlled cooling and heat in slab for hot rolling without causing defects in prods.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8075779A JPS566704A (en) 1979-06-28 1979-06-28 Hot width-gauge control rolling method for cast slab of middle and low carbon steel

Publications (2)

Publication Number Publication Date
JPS566704A true JPS566704A (en) 1981-01-23
JPH0112561B2 JPH0112561B2 (en) 1989-03-01

Family

ID=13727274

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8075779A Granted JPS566704A (en) 1979-06-28 1979-06-28 Hot width-gauge control rolling method for cast slab of middle and low carbon steel

Country Status (2)

Country Link
JP (1) JPS566704A (en)
DE (1) DE3023723A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58167064A (en) * 1982-03-26 1983-10-03 Nippon Kokan Kk <Nkk> Continuous casting method of steel
JPS60166150A (en) * 1984-02-10 1985-08-29 Nippon Steel Corp Continuous casting method of steel
KR20180130576A (en) 2016-08-08 2018-12-07 신닛테츠스미킨 카부시키카이샤 Steel plate

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58174551A (en) * 1982-04-03 1983-10-13 Sumitomo Electric Ind Ltd Steel containing boron and manufacture thereof
JPS5989727A (en) * 1982-11-12 1984-05-24 Kawasaki Steel Corp Manufacture of cold rolled steel sheet for extremely deep drawing with superior press formability
DE3580767D1 (en) * 1984-02-10 1991-01-17 Nippon Steel Corp METHOD FOR A WEAKENED STEIGAGE SOLARIZATION OF STEEL.

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52105520A (en) * 1976-03-02 1977-09-05 Nippon Steel Corp Continuous casting and continuous hot rolling of aluminium-killed stee l

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52105520A (en) * 1976-03-02 1977-09-05 Nippon Steel Corp Continuous casting and continuous hot rolling of aluminium-killed stee l

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58167064A (en) * 1982-03-26 1983-10-03 Nippon Kokan Kk <Nkk> Continuous casting method of steel
JPH0218936B2 (en) * 1982-03-26 1990-04-27 Nippon Kokan Kk
JPS60166150A (en) * 1984-02-10 1985-08-29 Nippon Steel Corp Continuous casting method of steel
JPH0245536B2 (en) * 1984-02-10 1990-10-09 Nippon Steel Corp
KR20180130576A (en) 2016-08-08 2018-12-07 신닛테츠스미킨 카부시키카이샤 Steel plate
US11365465B2 (en) 2016-08-08 2022-06-21 Nippon Steel Corporation Steel sheet

Also Published As

Publication number Publication date
JPH0112561B2 (en) 1989-03-01
DE3023723A1 (en) 1981-01-15

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