JPH02179819A - Cooling controller for hot-rolled steel sheet - Google Patents

Cooling controller for hot-rolled steel sheet

Info

Publication number
JPH02179819A
JPH02179819A JP63331093A JP33109388A JPH02179819A JP H02179819 A JPH02179819 A JP H02179819A JP 63331093 A JP63331093 A JP 63331093A JP 33109388 A JP33109388 A JP 33109388A JP H02179819 A JPH02179819 A JP H02179819A
Authority
JP
Japan
Prior art keywords
water
sprayed
steel sheet
hot steel
warpage
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
JP63331093A
Other languages
Japanese (ja)
Other versions
JPH0741303B2 (en
Inventor
Motohiro Osada
Hiroto Ono
Masanao Yamamoto
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 JP63331093A priority Critical patent/JPH0741303B2/en
Publication of JPH02179819A publication Critical patent/JPH02179819A/en
Publication of JPH0741303B2 publication Critical patent/JPH0741303B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the controller capable of keeping the warpage of a hot steel being cooled within control limits by controlling the amt. of cooling water to be sprayed from nozzles provided on the upper and lower faces of the hot steel sheet, and determining the water cooling time in accordance with the obtained water amt. sprayed to the upper and lower faces.
CONSTITUTION: The relation between the amt. of cooling water to be sprayed from the nozzles 7c arranged on the upper face and the heat transfer rate of the hot steel sheet 1 is obtained by a first arithmetic means based on the previously given physical properties of the sheet 1 such as its quality, thickness, width, and length. The relation between the amt. of cooling water to be sprayed from the nozzle 7c arranged on the lower face and the heat transfer rate of the hot steel sheet 1 is obtained in the same way by a second arithmetic means. The warpage is calculated by a warpage arithmetic means from the temp. history of the hot steel 1 based on the obtained relations from the 1st and 2nd arithmetic means. Meanwhile, the amts. of water to be sprayed from the nozzles 7c provided of the upper and lower faces are controlled by a cooling water control means so that the obtained warpage is kept within control limits, and the water cooling time is determined in accordance with the obtained amts. of water sprayed to the upper and lower faces.
COPYRIGHT: (C)1990,JPO&Japio
JP63331093A 1988-12-28 1988-12-28 Cooling control device for hot rolled steel sheet Expired - Lifetime JPH0741303B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63331093A JPH0741303B2 (en) 1988-12-28 1988-12-28 Cooling control device for hot rolled steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63331093A JPH0741303B2 (en) 1988-12-28 1988-12-28 Cooling control device for hot rolled steel sheet

Publications (2)

Publication Number Publication Date
JPH02179819A true JPH02179819A (en) 1990-07-12
JPH0741303B2 JPH0741303B2 (en) 1995-05-10

Family

ID=18239775

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63331093A Expired - Lifetime JPH0741303B2 (en) 1988-12-28 1988-12-28 Cooling control device for hot rolled steel sheet

Country Status (1)

Country Link
JP (1) JPH0741303B2 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04200911A (en) * 1990-11-30 1992-07-21 Nkk Corp Method for preventing fluctuation of thickness, with, shape and sheet crown of steel strip
JPH0671325A (en) * 1992-08-27 1994-03-15 Kobe Steel Ltd Tip end warp reducing method in plate rolling
EP1944099A1 (en) * 2006-09-19 2008-07-16 Nippon Steel Corporation Cooling method of steel plate
JP2011167754A (en) * 2010-02-22 2011-09-01 Sumitomo Metal Ind Ltd Method and device for controlling cooling of thick steel plate and method for manufacturing thick steel plate
JP2013013936A (en) * 2011-06-07 2013-01-24 Nippon Steel & Sumitomo Metal Corp Cooling appararus and cooling method of hot-rolled steel sheet
JP2013013935A (en) * 2011-06-07 2013-01-24 Nippon Steel & Sumitomo Metal Corp Cooling method of hot-rolled steel sheet
US9186710B2 (en) 2011-06-07 2015-11-17 Nippon Steel & Sumitomo Metal Corporation Method for cooling hot-rolled steel sheet
US9211574B2 (en) 2011-07-27 2015-12-15 Nippon Steel & Sumitomo Metal Corporation Method for manufacturing steel sheet
US9566625B2 (en) 2011-06-07 2017-02-14 Nippon Steel & Sumitomo Metal Corporation Apparatus for cooling hot-rolled steel sheet

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2286935B1 (en) 2008-03-31 2017-08-02 JFE Steel Corporation Steel plate quality assurance system and method
JP5532637B2 (en) * 2009-03-13 2014-06-25 Jfeスチール株式会社 Thick steel plate temperature guarantee system and thick steel plate manufacturing method
JP5391758B2 (en) * 2009-03-18 2014-01-15 Jfeスチール株式会社 Thick steel plate quality assurance equipment

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04200911A (en) * 1990-11-30 1992-07-21 Nkk Corp Method for preventing fluctuation of thickness, with, shape and sheet crown of steel strip
JPH0671325A (en) * 1992-08-27 1994-03-15 Kobe Steel Ltd Tip end warp reducing method in plate rolling
EP1944099A1 (en) * 2006-09-19 2008-07-16 Nippon Steel Corporation Cooling method of steel plate
EP1944099A4 (en) * 2006-09-19 2008-11-19 Nippon Steel Corp Cooling method of steel plate
US7718018B2 (en) 2006-09-19 2010-05-18 Nippon Steel Corporation Method of cooling steel plate
JP2011167754A (en) * 2010-02-22 2011-09-01 Sumitomo Metal Ind Ltd Method and device for controlling cooling of thick steel plate and method for manufacturing thick steel plate
JP2013013936A (en) * 2011-06-07 2013-01-24 Nippon Steel & Sumitomo Metal Corp Cooling appararus and cooling method of hot-rolled steel sheet
JP2013013935A (en) * 2011-06-07 2013-01-24 Nippon Steel & Sumitomo Metal Corp Cooling method of hot-rolled steel sheet
US9186710B2 (en) 2011-06-07 2015-11-17 Nippon Steel & Sumitomo Metal Corporation Method for cooling hot-rolled steel sheet
US9566625B2 (en) 2011-06-07 2017-02-14 Nippon Steel & Sumitomo Metal Corporation Apparatus for cooling hot-rolled steel sheet
US9211574B2 (en) 2011-07-27 2015-12-15 Nippon Steel & Sumitomo Metal Corporation Method for manufacturing steel sheet

Also Published As

Publication number Publication date
JPH0741303B2 (en) 1995-05-10

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