JPS5677005A - Hot rolling method for steel - Google Patents

Hot rolling method for steel

Info

Publication number
JPS5677005A
JPS5677005A JP15207579A JP15207579A JPS5677005A JP S5677005 A JPS5677005 A JP S5677005A JP 15207579 A JP15207579 A JP 15207579A JP 15207579 A JP15207579 A JP 15207579A JP S5677005 A JPS5677005 A JP S5677005A
Authority
JP
Japan
Prior art keywords
cooling effect
roll
cooling water
cooling
temperature zone
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
JP15207579A
Other languages
Japanese (ja)
Inventor
Masao Hachitani
Otosaku Suzuki
Hiroo Yamanishi
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 GURIISU KK
Nippon Steel Corp
Nippon Grease Co Ltd
Original Assignee
NIPPON GURIISU KK
Nippon Steel Corp
Nippon Grease Co 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 NIPPON GURIISU KK, Nippon Steel Corp, Nippon Grease Co Ltd filed Critical NIPPON GURIISU KK
Priority to JP15207579A priority Critical patent/JPS5677005A/en
Publication of JPS5677005A publication Critical patent/JPS5677005A/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
    • B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
    • B21B27/06—Lubricating, cooling or heating rolls
    • B21B27/10—Lubricating, cooling or heating rolls externally
    • 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
    • B21B45/02—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 lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0206—Coolants
    • 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
    • B21B45/02—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 lubricating, cooling, or cleaning
    • B21B45/0203—Cooling
    • B21B45/0209—Cooling devices, e.g. using gaseous coolants
    • B21B45/0215—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes
    • B21B45/0218—Cooling devices, e.g. using gaseous coolants using liquid coolants, e.g. for sections, for tubes for strips, sheets, or plates

Landscapes

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

Abstract

PURPOSE: To effectively cool the roll, and to restrict the temperature drop in the rolled material to a very small value, by employing a cooling effect changing agent having different cooling effect between the low temperature zone and the high temperatur zone, after adding it to the cooling water.
CONSTITUTION: The cooling effect changing agent accomplishes the cooling effect in a low temperature zone like as 400 or lower degrees for example, but declines the cooling effect in a high temperature zone like as 400W1,200°C for example, one or more than two of sodium alginate, carboxylmethylcellulose, hydroxyethylcellulose, polyacrylamide, and polyalkyleneglycol, are employed as this cooling effect transforming agent. For instance, when the material 31 is to be rolled by the rolling roll 30, the tip 34a of the drain board 34 is tight pressed to the roll 30 leaving no clearance, and the cooling water 33 is sprayed from the nozzle 32 against the roll 30; besides, the modified cooling water 37, prepared by adding above stated cooling effect changing agent to the cooling water, is sprayed from the nozzle 36 against the roll 30. Hereby, the roll life can be about 5% extended and the temperature drop in the rolled material can be reduced by about 5W15°C.
COPYRIGHT: (C)1981,JPO&Japio
JP15207579A 1979-11-26 1979-11-26 Hot rolling method for steel Pending JPS5677005A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15207579A JPS5677005A (en) 1979-11-26 1979-11-26 Hot rolling method for steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15207579A JPS5677005A (en) 1979-11-26 1979-11-26 Hot rolling method for steel

Publications (1)

Publication Number Publication Date
JPS5677005A true JPS5677005A (en) 1981-06-25

Family

ID=15532500

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15207579A Pending JPS5677005A (en) 1979-11-26 1979-11-26 Hot rolling method for steel

Country Status (1)

Country Link
JP (1) JPS5677005A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63256215A (en) * 1987-04-13 1988-10-24 Nippon Steel Corp Cooling method for rolled steel stock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63256215A (en) * 1987-04-13 1988-10-24 Nippon Steel Corp Cooling method for rolled steel stock
JPH0426924B2 (en) * 1987-04-13 1992-05-08 Nippon Steel Corp

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