JPS5684102A - Rough rolling method for billet - Google Patents

Rough rolling method for billet

Info

Publication number
JPS5684102A
JPS5684102A JP15947679A JP15947679A JPS5684102A JP S5684102 A JPS5684102 A JP S5684102A JP 15947679 A JP15947679 A JP 15947679A JP 15947679 A JP15947679 A JP 15947679A JP S5684102 A JPS5684102 A JP S5684102A
Authority
JP
Japan
Prior art keywords
spraying
water
amount
sections
bar
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
JP15947679A
Other languages
Japanese (ja)
Inventor
Hitoshi Asai
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 JP15947679A priority Critical patent/JPS5684102A/en
Publication of JPS5684102A publication Critical patent/JPS5684102A/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
    • B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product

Landscapes

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

Abstract

PURPOSE:To improve the yield of rolling work, by spraying the controlled amount of cooling water in front of the roughing mill in order to give a transversal temperature difference to the billet, and hereby changing its transversal deformation resistance while undergoing the roughing pass. CONSTITUTION:A hot run table 4 is installed in front of the first roughing mill 1 in the rough rolling line; a high pressure water spraying header 5 is arranged above this hot run table 4 so as to cross over the rolled bar S running on the table 4; many spray nozzles 6 are attached to the header 5 at a constant picth; these nozzles 6 are uniformly distributed in each of spraying sections A, B, C, D, E. An electromagnetic valve 7 is provided in each of spraying sections A-E on purpose to control the amount of highly pressurized water to be sprayed in each of sections A-E according to the control command sent from the control room 8; hereby, the temperature of water- cooled bar S is controlled. The measuring probe 10 of the thermometer 9, installed just in front of the rolling mill 1, is brought down to touch the bar S for measuring temperatures of the water- cooled bar S separately for each of spraying sections A-E; the measurements are transmitted to the control room 8 to help its control work for adjusting the amount of highly pressurized water to be sprayed. By the present method, the amount of tongue or fish-tail shaped material to be cut off after the roughing pass is minimized, and hence, the yield is improved.
JP15947679A 1979-12-07 1979-12-07 Rough rolling method for billet Pending JPS5684102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15947679A JPS5684102A (en) 1979-12-07 1979-12-07 Rough rolling method for billet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15947679A JPS5684102A (en) 1979-12-07 1979-12-07 Rough rolling method for billet

Publications (1)

Publication Number Publication Date
JPS5684102A true JPS5684102A (en) 1981-07-09

Family

ID=15694597

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15947679A Pending JPS5684102A (en) 1979-12-07 1979-12-07 Rough rolling method for billet

Country Status (1)

Country Link
JP (1) JPS5684102A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5994351A (en) * 1982-11-22 1984-05-31 Fujitsu Ltd Electron beam device
JP2008260027A (en) * 2007-04-10 2008-10-30 Nippon Steel Corp Method for rolling width of steel slab
CN107493531A (en) * 2017-08-04 2017-12-19 歌尔科技有限公司 A kind of head pose detection method, device and earphone
CN110039450A (en) * 2018-01-15 2019-07-23 宝山钢铁股份有限公司 A kind of water curtain blow device on grinding mill

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5994351A (en) * 1982-11-22 1984-05-31 Fujitsu Ltd Electron beam device
JPH0512815B2 (en) * 1982-11-22 1993-02-19 Fujitsu Ltd
JP2008260027A (en) * 2007-04-10 2008-10-30 Nippon Steel Corp Method for rolling width of steel slab
CN107493531A (en) * 2017-08-04 2017-12-19 歌尔科技有限公司 A kind of head pose detection method, device and earphone
CN107493531B (en) * 2017-08-04 2019-11-08 歌尔科技有限公司 A kind of head pose detection method, device and earphone
CN110039450A (en) * 2018-01-15 2019-07-23 宝山钢铁股份有限公司 A kind of water curtain blow device on grinding mill

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