JPS55106601A - Manufacture of slab for thick steel plate by continuous casting - Google Patents

Manufacture of slab for thick steel plate by continuous casting

Info

Publication number
JPS55106601A
JPS55106601A JP99079A JP99079A JPS55106601A JP S55106601 A JPS55106601 A JP S55106601A JP 99079 A JP99079 A JP 99079A JP 99079 A JP99079 A JP 99079A JP S55106601 A JPS55106601 A JP S55106601A
Authority
JP
Japan
Prior art keywords
slab
central zone
rolls
compression stress
steel plate
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
JP99079A
Other languages
Japanese (ja)
Other versions
JPS6324761B2 (en
Inventor
Katsu Okado
Yoneaki Fujita
Takashi Ariizumi
Takeshi Hirasawa
Shizutada Yamagishi
Original Assignee
Nippon Kokan Kk <Nkk>
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 Kokan Kk <Nkk> filed Critical Nippon Kokan Kk <Nkk>
Priority to JP99079A priority Critical patent/JPS6324761B2/ja
Publication of JPS55106601A publication Critical patent/JPS55106601A/en
Publication of JPS6324761B2 publication Critical patent/JPS6324761B2/ja
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/02Metal-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 billets, in which the cross-sectional form is unimportant Rolling combined with forging or pressing
    • B21B1/026Rolling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/46Metal-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 metal immediately subsequent to continuous casting

Abstract

PURPOSE:To increase the rolling pressure for the middle part of the material, and to improve the effect of pressure welding for the porosity, by giving material the strong reduction with the stepped rolls and flat rolls, while the bloomed slab still keeping a temperature difference between its surface and central zone. CONSTITUTION:While the continuously cast and bloomed slab still keeps a temperature difference between its surface and central zone, a strong reduction is given by the stepped rolls 1 to the middle part A of the material 2. Hereby, the compression stress acting in the longitudinal direction of the sheet generates at the part A, and the tensile stress generates at the part B being left free from above reduction, and the compression stress of the part A increases. Next, the material 2 is rolled by the flat rolls 3, and the part B receives reduction under the compression stress acting in the longitudinal direction of the sheet, and a high rolling force can be obtained. According to this method, the porosity at the central zone of the slab is effectively pressure welded, and the cast structure is efficiently forged; as a result, the manufacturing limit for the sound, high equality thick steel plate is widened.
JP99079A 1979-01-11 1979-01-11 Expired JPS6324761B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP99079A JPS6324761B2 (en) 1979-01-11 1979-01-11

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP99079A JPS6324761B2 (en) 1979-01-11 1979-01-11

Publications (2)

Publication Number Publication Date
JPS55106601A true JPS55106601A (en) 1980-08-15
JPS6324761B2 JPS6324761B2 (en) 1988-05-23

Family

ID=11489027

Family Applications (1)

Application Number Title Priority Date Filing Date
JP99079A Expired JPS6324761B2 (en) 1979-01-11 1979-01-11

Country Status (1)

Country Link
JP (1) JPS6324761B2 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0164265A2 (en) * 1984-06-08 1985-12-11 DAVY McKEE (SHEFFIELD) LIMITED Method of rolling metal slab
US4876874A (en) * 1986-03-15 1989-10-31 Nippon Steel Corporation Method of hot rolling steel strip with deformed sections
JPH04305301A (en) * 1991-04-01 1992-10-28 Nkk Corp Rolling method of billet
JPH04327301A (en) * 1991-04-30 1992-11-16 Nkk Corp Method for rolling billet
US20150367408A1 (en) * 2013-05-02 2015-12-24 Nippon Steel & Sumitomo Metal Corporation Continuous casting equipment

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015174395A1 (en) 2014-05-14 2015-11-19 新日鐵住金株式会社 Continuous casting method for slab

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0164265A2 (en) * 1984-06-08 1985-12-11 DAVY McKEE (SHEFFIELD) LIMITED Method of rolling metal slab
US4876874A (en) * 1986-03-15 1989-10-31 Nippon Steel Corporation Method of hot rolling steel strip with deformed sections
JPH04305301A (en) * 1991-04-01 1992-10-28 Nkk Corp Rolling method of billet
JPH04327301A (en) * 1991-04-30 1992-11-16 Nkk Corp Method for rolling billet
US20150367408A1 (en) * 2013-05-02 2015-12-24 Nippon Steel & Sumitomo Metal Corporation Continuous casting equipment
US9782824B2 (en) * 2013-05-02 2017-10-10 Nippon Steel and Sumitomo Metal Corporation Continuous casting equipment

Also Published As

Publication number Publication date
JPS6324761B2 (en) 1988-05-23

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