JPS5699001A - Preliminarily forming method for top and bottom of slab - Google Patents

Preliminarily forming method for top and bottom of slab

Info

Publication number
JPS5699001A
JPS5699001A JP104480A JP104480A JPS5699001A JP S5699001 A JPS5699001 A JP S5699001A JP 104480 A JP104480 A JP 104480A JP 104480 A JP104480 A JP 104480A JP S5699001 A JPS5699001 A JP S5699001A
Authority
JP
Japan
Prior art keywords
breadth
blank slab
slab
blank
reduction
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
JP104480A
Other languages
Japanese (ja)
Inventor
Kazuo Watanabe
Hidenori Tokita
Hiroe Nakajima
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 JP104480A priority Critical patent/JPS5699001A/en
Publication of JPS5699001A publication Critical patent/JPS5699001A/en
Pending 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
    • B21B1/024—Forging or pressing

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Metal Rolling (AREA)

Abstract

PURPOSE:To effectively improve the yield, by making the reduction of breadth of the blank slab to be given the preliminary treatment a specified amount smaller than the final aimed reduction of breadth of the blank slab to be given by the following edging pass, when the blank slab is to be subjected to the edging pass after preliminarily forming its top and bottom. CONSTITUTION:At preliminarily forming the top and bottom of the blank slab by compressing in the direction of breadth with a specifically shaped pressing tool 4, prior to subjecting the blank slab to the edging pass, the reduction of breadth by the pressing tool 4 is made 10-<=50mm. the final aimed reduction of breadth of the blank slab. Hereupon, it is desirable to change the length of contact between the pressing tool 4 and the side edge of the blank slab correspondingly to the level of breadth of the blank slab. If the breadth of blank slab is to be reduced by the following edging pass, it is desirable to apply said treatment to the blank slab correspondingly to the level of reduction of breadth by the edging pass. In case of stepwise reducing the breadth of blank slab by the edging pass, the aforementioned treatment is applied to the blank slab for every step of the edging pass according to respective level of breadth; hereby, the yield can be further improved.
JP104480A 1980-01-09 1980-01-09 Preliminarily forming method for top and bottom of slab Pending JPS5699001A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP104480A JPS5699001A (en) 1980-01-09 1980-01-09 Preliminarily forming method for top and bottom of slab

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP104480A JPS5699001A (en) 1980-01-09 1980-01-09 Preliminarily forming method for top and bottom of slab

Publications (1)

Publication Number Publication Date
JPS5699001A true JPS5699001A (en) 1981-08-10

Family

ID=11490549

Family Applications (1)

Application Number Title Priority Date Filing Date
JP104480A Pending JPS5699001A (en) 1980-01-09 1980-01-09 Preliminarily forming method for top and bottom of slab

Country Status (1)

Country Link
JP (1) JPS5699001A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594910A (en) * 1982-07-01 1984-01-11 Kawasaki Steel Corp Restricting method of crop at front and rear ends of sheet bar
JPS62267002A (en) * 1986-05-16 1987-11-19 Kawasaki Steel Corp Preforming method for front and rear ends of hot slab
FR2750351A1 (en) * 1996-06-27 1998-01-02 Lorraine Laminage Method of calibrating size of metal rod
JP2008272807A (en) * 2007-05-01 2008-11-13 Nippon Steel Corp Method for determining pre-forming condition of slab

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS594910A (en) * 1982-07-01 1984-01-11 Kawasaki Steel Corp Restricting method of crop at front and rear ends of sheet bar
JPS62267002A (en) * 1986-05-16 1987-11-19 Kawasaki Steel Corp Preforming method for front and rear ends of hot slab
FR2750351A1 (en) * 1996-06-27 1998-01-02 Lorraine Laminage Method of calibrating size of metal rod
JP2008272807A (en) * 2007-05-01 2008-11-13 Nippon Steel Corp Method for determining pre-forming condition of slab

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