JPS5630002A - Rolling method for splitting high temperature cast billet - Google Patents

Rolling method for splitting high temperature cast billet

Info

Publication number
JPS5630002A
JPS5630002A JP10355879A JP10355879A JPS5630002A JP S5630002 A JPS5630002 A JP S5630002A JP 10355879 A JP10355879 A JP 10355879A JP 10355879 A JP10355879 A JP 10355879A JP S5630002 A JPS5630002 A JP S5630002A
Authority
JP
Japan
Prior art keywords
splitting
billet
cast billet
split
high temperature
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
JP10355879A
Other languages
Japanese (ja)
Inventor
Norio Hirakawa
Tsutomu Ishita
Shinichi Yoshima
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 JP10355879A priority Critical patent/JPS5630002A/en
Publication of JPS5630002A publication Critical patent/JPS5630002A/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
    • B21B1/08—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 structural sections, i.e. work of special cross-section, e.g. angle steel
    • B21B1/0815—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 structural sections, i.e. work of special cross-section, e.g. angle steel from flat-rolled products, e.g. by longitudinal shearing
    • 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
    • B21B2001/022—Blooms or billets

Landscapes

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

Abstract

PURPOSE:To almost eliminate the large size camber usually generated at the end of the cast billet, when the high temperature cast billet is to be split by the roller provided with the ring protuberance, by first forming the rolled groove by above stated roll, and next, by splitting the billet at its middle zone before finishing the splitting work at the forefront and tail ends. CONSTITUTION:At forming the splitting groove in the high temperature cast billet 4 by the roll 2 provided with the ring protuberance 1 at its drum portion, before splitting the billet 4, the rolled groove 5 of specified depth is carved in the cast billet 4 over its whole length; next, the middle zone with the exception of about 1m at each of forefront and tail ends is split 6 so as to once stop the splitting work leaving about 1m tail end unsplit. Then, both ends are split in a way of splitting the billet 4 from the already split middle zone toward the forefront end as shwon by the arrow mark (a). The splitting in the direction (b) is similarly worked. According to this method, the large camber toward the right and the left at the ends of the cast billet 4, being generated by the conventional splitting method, is almost eliminated.
JP10355879A 1979-08-16 1979-08-16 Rolling method for splitting high temperature cast billet Pending JPS5630002A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10355879A JPS5630002A (en) 1979-08-16 1979-08-16 Rolling method for splitting high temperature cast billet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10355879A JPS5630002A (en) 1979-08-16 1979-08-16 Rolling method for splitting high temperature cast billet

Publications (1)

Publication Number Publication Date
JPS5630002A true JPS5630002A (en) 1981-03-26

Family

ID=14357138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10355879A Pending JPS5630002A (en) 1979-08-16 1979-08-16 Rolling method for splitting high temperature cast billet

Country Status (1)

Country Link
JP (1) JPS5630002A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783983A (en) * 1986-11-12 1988-11-15 Mandayam Narasimhan Method and apparatus for amorphous metal slitting

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4783983A (en) * 1986-11-12 1988-11-15 Mandayam Narasimhan Method and apparatus for amorphous metal slitting

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