JPS5597807A - Controlling method for pipe rolling - Google Patents

Controlling method for pipe rolling

Info

Publication number
JPS5597807A
JPS5597807A JP543179A JP543179A JPS5597807A JP S5597807 A JPS5597807 A JP S5597807A JP 543179 A JP543179 A JP 543179A JP 543179 A JP543179 A JP 543179A JP S5597807 A JPS5597807 A JP S5597807A
Authority
JP
Japan
Prior art keywords
pipe blank
pipe
peripheral speed
mandrel
rolling
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
JP543179A
Other languages
Japanese (ja)
Inventor
Takeo Yamada
Chihiro Hayashi
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
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 Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP543179A priority Critical patent/JPS5597807A/en
Publication of JPS5597807A publication Critical patent/JPS5597807A/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 manufacture the finished pipe possessing uniform wall thickness distribution over the entire regions in the longitudinal direction, by rolling the region generating the thin wall at the rear end of the pipe blank while controllably increasing the peripheral speed of the reducing roll, at rolling the pipe blank with the mandrel. CONSTITUTION:The mandrel 2 is inserted into the pipe blank 1 being sent from the upstream process; after that, the pipe blank 1 is sent in the arrowed direction and is passed through the gap of reducing rolls 31a-38a included in each rolling stand 31-38, and is stretched. The drive and the peripheral speed of each reducing roll are controlled by the controller 4 memorizing the reference peripheral speed specified so as to make faster the peripheral speed on the downstream side than that on the upstream side in the traveling direction of the pipe blank 1. Hereby, the wall thickness and outer diameter of the pipe blank 1 are gradually reduced while the mandrel 2 is restricting the inner diameter of the pipe blank 1, and the pipe blank 1 is rolled into the specified finished pipe.
JP543179A 1979-01-18 1979-01-18 Controlling method for pipe rolling Pending JPS5597807A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP543179A JPS5597807A (en) 1979-01-18 1979-01-18 Controlling method for pipe rolling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP543179A JPS5597807A (en) 1979-01-18 1979-01-18 Controlling method for pipe rolling

Publications (1)

Publication Number Publication Date
JPS5597807A true JPS5597807A (en) 1980-07-25

Family

ID=11610993

Family Applications (1)

Application Number Title Priority Date Filing Date
JP543179A Pending JPS5597807A (en) 1979-01-18 1979-01-18 Controlling method for pipe rolling

Country Status (1)

Country Link
JP (1) JPS5597807A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6072602A (en) * 1983-09-27 1985-04-24 Nippon Steel Corp Rolling method of metallic pipe by compensating its rear-end speed

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6072602A (en) * 1983-09-27 1985-04-24 Nippon Steel Corp Rolling method of metallic pipe by compensating its rear-end speed

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