JPS5768204A - Hot rolling method for steel material - Google Patents

Hot rolling method for steel material

Info

Publication number
JPS5768204A
JPS5768204A JP14151180A JP14151180A JPS5768204A JP S5768204 A JPS5768204 A JP S5768204A JP 14151180 A JP14151180 A JP 14151180A JP 14151180 A JP14151180 A JP 14151180A JP S5768204 A JPS5768204 A JP S5768204A
Authority
JP
Japan
Prior art keywords
steel material
water
rolling mill
finish rolling
prescribed
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
JP14151180A
Other languages
Japanese (ja)
Other versions
JPS5932201B2 (en
Inventor
Tadayoshi Wada
Shoichi Oshimi
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 JP14151180A priority Critical patent/JPS5932201B2/en
Publication of JPS5768204A publication Critical patent/JPS5768204A/en
Publication of JPS5932201B2 publication Critical patent/JPS5932201B2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
    • B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically

Landscapes

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

Abstract

PURPOSE:To prevent a steel material from the temperature drop and generation of surface flaws, by passing the steel material through an air-water spraying zone for a prescribed period of time between a rough rolling mill and a finish rolling mill, in order to form fine water droplets upon the surface of the steel material with a prescribed range of a water rate density, and by applying a high pressure water descaling process to the steel material under a prescribed condition on the feed-in side of the finish rolling mill. CONSTITUTION:A steel material 2 is passed through an air-water spraying zone provided with air-water spraying nozzles 3a-3d, between a rough rolling mill 1 and a finish rolling mill 9. The time needed in passing the spraying zone is prescribed as 1-30 seconds, wherein fine water droplets are formed on the surface of the steel material 2 with a water rate density of 0.2-75cc/m<2>.sec. A high pressure water descaling process is then applied to the steel material 2 on the feed-in side of the finish rolling mill 9, by jetting water at 55-130kg/cm<2> pressure from nozzles 8a, 8b for removing the scales from the surface of the steel material 2; after which, the steel material 2 is subjected to a finish rolling pass.
JP14151180A 1980-10-09 1980-10-09 Hot rolling method for steel materials Expired JPS5932201B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14151180A JPS5932201B2 (en) 1980-10-09 1980-10-09 Hot rolling method for steel materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14151180A JPS5932201B2 (en) 1980-10-09 1980-10-09 Hot rolling method for steel materials

Publications (2)

Publication Number Publication Date
JPS5768204A true JPS5768204A (en) 1982-04-26
JPS5932201B2 JPS5932201B2 (en) 1984-08-07

Family

ID=15293653

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14151180A Expired JPS5932201B2 (en) 1980-10-09 1980-10-09 Hot rolling method for steel materials

Country Status (1)

Country Link
JP (1) JPS5932201B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6061114A (en) * 1983-09-13 1985-04-08 Sumitomo Metal Ind Ltd Free-cutting steel rolling method
JPS6368214A (en) * 1986-09-09 1988-03-28 Kawasaki Steel Corp Descaling method in case of hot rolling
JPS63309318A (en) * 1987-06-08 1988-12-16 Nippon Steel Corp Method and device for hot width rolling of metallic slab

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6061114A (en) * 1983-09-13 1985-04-08 Sumitomo Metal Ind Ltd Free-cutting steel rolling method
JPS6368214A (en) * 1986-09-09 1988-03-28 Kawasaki Steel Corp Descaling method in case of hot rolling
JPS63309318A (en) * 1987-06-08 1988-12-16 Nippon Steel Corp Method and device for hot width rolling of metallic slab

Also Published As

Publication number Publication date
JPS5932201B2 (en) 1984-08-07

Similar Documents

Publication Publication Date Title
CA2332933A1 (en) Method and apparatus for producing martensite- or bainite-rich steel using steckel mill and controlled cooling
JPS5768204A (en) Hot rolling method for steel material
JPS5741821A (en) Descaling method for steel strip
JPS56134005A (en) Temper rolling method
JPS56163258A (en) Descaling method for steel plate
JPS5699009A (en) Removing method for rolling mill oil in cold rolling work for metallic strip
JPS55133802A (en) Cold rolling mill
JPS5791819A (en) Surface treatment device for stainless steel strip
JPS5758902A (en) Simultaneous manufacture of multiple billets
JPS57109517A (en) Descaling method
JPS5739003A (en) Manufacture of stainless steel sheet with uniform luster
JPS5768217A (en) Descaling method of hot rolled strip
ATE116877T1 (en) METHOD AND DEVICE FOR DESCALING A HOT ROLLED METAL OBJECT.
JPS54162631A (en) Descaling method for secondary scale of hot rolled steel strip
JPS5726178A (en) Continuously pickling method for steel strip
JPS5474258A (en) Hot rolling apparatus for steel material
JPS57110626A (en) Method for quenching of strip in continuous annealing
JPS56139212A (en) Method and apparatus for supplying rolling mill oil
DE4208036A1 (en) Descaling process for heat-rolled profiled sheet metal plates - uses solid jets of pressurised water with circular cross-section directed at speeds of more than 200 metres per second.
JPS5633103A (en) Feeding method for cast slab to hot rolling pass
JPS5770019A (en) Method for improving exfollation of scale on surface of hot rolled steel plate
JPS57103717A (en) Roll cooling method in hot rolling
JPS5425214A (en) Method of producing hot-rolled soft steel plate
Yanagi et al. Continuous Pickling Method and Apparatus
JPS5732820A (en) Scale removing method for hot rolled steel plate