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JPS55103210A - Setting method for roll gap in stretching reducer - Google Patents

Setting method for roll gap in stretching reducer

Info

Publication number
JPS55103210A
JPS55103210A JP1067579A JP1067579A JPS55103210A JP S55103210 A JPS55103210 A JP S55103210A JP 1067579 A JP1067579 A JP 1067579A JP 1067579 A JP1067579 A JP 1067579A JP S55103210 A JPS55103210 A JP S55103210A
Authority
JP
Japan
Prior art keywords
roll gap
value
operator
stand
operates
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
JP1067579A
Other languages
Japanese (ja)
Inventor
Fumiki Hirao
Koji Yoshioka
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.)
SUMITOMO KAINAN KOKAN KK
Nippon Steel Corp
Original Assignee
SUMITOMO KAINAN KOKAN KK
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 KAINAN KOKAN KK, Sumitomo Metal Industries Ltd filed Critical SUMITOMO KAINAN KOKAN KK
Priority to JP1067579A priority Critical patent/JPS55103210A/en
Publication of JPS55103210A publication Critical patent/JPS55103210A/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
    • B21B37/78—Control of tube rolling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B17/00—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling
    • B21B17/02—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length
    • B21B17/04—Tube-rolling by rollers of which the axes are arranged essentially perpendicular to the axis of the work, e.g. "axial" tube-rolling with mandrel, i.e. the mandrel rod contacts the rolled tube over the rod length in a continuous process

Landscapes

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

Abstract

PURPOSE:To finish the pipe into desired size and shape, and to remove the fluctuation of rolling characteristics, by measuring and processing the outer diameter of the pipe blank at the position corresponding to the bottom of groove of both caliber rolls on the exit side of each stand, and by operating the distance between the bottom of groove and the outer surface of the mandrel on purpose to control the roll gap. CONSTITUTION:The mandrel bar MB is inserted into the pipe blank PP; under this condition, the outer diameter D of this pipe blank PP is measured by the detector 11 when passing each stand, on the exit side of that stand. This information is corrected by the correction operator 13 into the clearance size D' between bottoms of grooves of caliber rolls 1a, 1b, and information on this value D' is inputted to the roll gap operator 14. The roll gap operator 14 operates the roll gap (h) from this valve D' and previously set and memorized value of diameter DM of the mandrel MB according to the forfula h=1/2(D'-DM). The comparison operator 15 operates the difference of this value (h) from the aim value hO, and operates the roll gap variation S required in naking zero this difference. Responding to this operation, the motor 10 actuates so as to set the roll gap to the aim value.
JP1067579A 1979-01-31 1979-01-31 Setting method for roll gap in stretching reducer Pending JPS55103210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1067579A JPS55103210A (en) 1979-01-31 1979-01-31 Setting method for roll gap in stretching reducer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1067579A JPS55103210A (en) 1979-01-31 1979-01-31 Setting method for roll gap in stretching reducer

Publications (1)

Publication Number Publication Date
JPS55103210A true JPS55103210A (en) 1980-08-07

Family

ID=11756826

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1067579A Pending JPS55103210A (en) 1979-01-31 1979-01-31 Setting method for roll gap in stretching reducer

Country Status (1)

Country Link
JP (1) JPS55103210A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996022845A1 (en) * 1995-01-25 1996-08-01 Butty Jean Francois Method of producing a metal hollow body, hollow bodies produced according to this method and device for carrying out this method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996022845A1 (en) * 1995-01-25 1996-08-01 Butty Jean Francois Method of producing a metal hollow body, hollow bodies produced according to this method and device for carrying out this method

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