JPS53132453A - Piercing method in press piercing mill - Google Patents

Piercing method in press piercing mill

Info

Publication number
JPS53132453A
JPS53132453A JP4805777A JP4805777A JPS53132453A JP S53132453 A JPS53132453 A JP S53132453A JP 4805777 A JP4805777 A JP 4805777A JP 4805777 A JP4805777 A JP 4805777A JP S53132453 A JPS53132453 A JP S53132453A
Authority
JP
Japan
Prior art keywords
piercing
press
mill
billet
indenting
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
JP4805777A
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 JP4805777A priority Critical patent/JPS53132453A/en
Publication of JPS53132453A publication Critical patent/JPS53132453A/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
    • 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
    • B21B17/08—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 having one or more protrusions, i.e. only the mandrel plugs contact the rolled tube; Press-piercing mills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Forging (AREA)

Abstract

PURPOSE:To reduce the indenting force to the utmost, and also, to prevent the bulging at the inelt side, by piercing the billet while maintaining constant the indenting velocity for the billet from the backside, and besides, by controlling the circumferential velocity at the groove bottom of the rolling roll to the specified condition.
JP4805777A 1977-04-25 1977-04-25 Piercing method in press piercing mill Pending JPS53132453A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4805777A JPS53132453A (en) 1977-04-25 1977-04-25 Piercing method in press piercing mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4805777A JPS53132453A (en) 1977-04-25 1977-04-25 Piercing method in press piercing mill

Publications (1)

Publication Number Publication Date
JPS53132453A true JPS53132453A (en) 1978-11-18

Family

ID=12792700

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4805777A Pending JPS53132453A (en) 1977-04-25 1977-04-25 Piercing method in press piercing mill

Country Status (1)

Country Link
JP (1) JPS53132453A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02220702A (en) * 1989-02-20 1990-09-03 Nippon Steel Corp Method for preventing over-filing of press roll piercer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5224970A (en) * 1975-08-22 1977-02-24 Nippon Steel Corp Method of press roll boring

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5224970A (en) * 1975-08-22 1977-02-24 Nippon Steel Corp Method of press roll boring

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02220702A (en) * 1989-02-20 1990-09-03 Nippon Steel Corp Method for preventing over-filing of press roll piercer

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