JPS5797801A - Method for rolling in rolling mill for wire rod and bar material - Google Patents

Method for rolling in rolling mill for wire rod and bar material

Info

Publication number
JPS5797801A
JPS5797801A JP17378380A JP17378380A JPS5797801A JP S5797801 A JPS5797801 A JP S5797801A JP 17378380 A JP17378380 A JP 17378380A JP 17378380 A JP17378380 A JP 17378380A JP S5797801 A JPS5797801 A JP S5797801A
Authority
JP
Japan
Prior art keywords
group
screw
rolling
mill group
rolling mill
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
JP17378380A
Other languages
Japanese (ja)
Inventor
Yoshihiro Yamaguchi
Tokuo Mizuta
Yoichi Takahashi
Mitsuru Moritaka
Mikio Moriga
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP17378380A priority Critical patent/JPS5797801A/en
Publication of JPS5797801A publication Critical patent/JPS5797801A/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
    • B21B37/58—Roll-force control; Roll-gap control
    • 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
    • B21B1/16—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section
    • B21B1/18—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 wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process

Landscapes

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

Abstract

PURPOSE:To eliminate the adverse influence by the skid marks of billets and to improve the accuracy of sectional dimensions by performing screw-down controlling only in the final stand of an intermediate rolling mill group in rolling mills of a fully continuous system for wire rods and bar materials. CONSTITUTION:In continuous type rolling mills for wire rods constituted of a roughing mill group 1, the 1st intermediate rolling mill group 2, the 2nd intermediate rolling mill group 3 and a finishing mill group 4, screw down controlling is necessary in order to eliminate the adverse influence owing to skid marks. The results of the investigations indicate that this can be accomplished by performing screw-down control in such a way that the fluctuation ratios in the top and bottom directions of the rolled material just prior to entering the group 4 are kept constant, that is, the rolling roll gaps on the upper stream side of the group 4 are maintained constant no matter what kind of rolling is done on the upper stream side of the group 4. Hence, if the screw-down devices 6 of the final stand of the group 3 are of an oil hydraulic system, the home positions of rams are controlled and if of a screw type, the home positions of rolls are controlled. It is equally well to perform screw-down control with the initial stage stand of the group 4 in combination with this at this time.
JP17378380A 1980-12-11 1980-12-11 Method for rolling in rolling mill for wire rod and bar material Pending JPS5797801A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17378380A JPS5797801A (en) 1980-12-11 1980-12-11 Method for rolling in rolling mill for wire rod and bar material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17378380A JPS5797801A (en) 1980-12-11 1980-12-11 Method for rolling in rolling mill for wire rod and bar material

Publications (1)

Publication Number Publication Date
JPS5797801A true JPS5797801A (en) 1982-06-17

Family

ID=15967063

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17378380A Pending JPS5797801A (en) 1980-12-11 1980-12-11 Method for rolling in rolling mill for wire rod and bar material

Country Status (1)

Country Link
JP (1) JPS5797801A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102671938A (en) * 2012-05-08 2012-09-19 首钢总公司 High speed production method for controlling banded structure of low carbon steel wire rod

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5039066A (en) * 1973-08-08 1975-04-10

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5039066A (en) * 1973-08-08 1975-04-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102671938A (en) * 2012-05-08 2012-09-19 首钢总公司 High speed production method for controlling banded structure of low carbon steel wire rod

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