JPS53127361A - Replacing apparatus for plug bar of piercing mill - Google Patents

Replacing apparatus for plug bar of piercing mill

Info

Publication number
JPS53127361A
JPS53127361A JP4139277A JP4139277A JPS53127361A JP S53127361 A JPS53127361 A JP S53127361A JP 4139277 A JP4139277 A JP 4139277A JP 4139277 A JP4139277 A JP 4139277A JP S53127361 A JPS53127361 A JP S53127361A
Authority
JP
Japan
Prior art keywords
plug bar
replacing apparatus
piercing mill
hollow pipe
bar
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
JP4139277A
Other languages
Japanese (ja)
Inventor
Takehisa Harako
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP4139277A priority Critical patent/JPS53127361A/en
Publication of JPS53127361A publication Critical patent/JPS53127361A/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
    • B21B25/00—Mandrels for metal tube rolling mills, e.g. mandrels of the types used in the methods covered by group B21B17/00; Accessories or auxiliary means therefor ; Construction of, or alloys for, mandrels or plugs
    • B21B25/06—Interchanging mandrels, fixing plugs on mandrel rods or cooling during interchanging mandrels

Landscapes

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

Abstract

PURPOSE:The titled replacing apparatus which can efficiently manufacture the good hollow pipe, by taking out sideway the hollow pipe together with the plug bar after the piercing rolling, and by setting the new plug bar at the same time.
JP4139277A 1977-04-13 1977-04-13 Replacing apparatus for plug bar of piercing mill Pending JPS53127361A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4139277A JPS53127361A (en) 1977-04-13 1977-04-13 Replacing apparatus for plug bar of piercing mill

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4139277A JPS53127361A (en) 1977-04-13 1977-04-13 Replacing apparatus for plug bar of piercing mill

Publications (1)

Publication Number Publication Date
JPS53127361A true JPS53127361A (en) 1978-11-07

Family

ID=12607091

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4139277A Pending JPS53127361A (en) 1977-04-13 1977-04-13 Replacing apparatus for plug bar of piercing mill

Country Status (1)

Country Link
JP (1) JPS53127361A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016172891A (en) * 2015-03-17 2016-09-29 Ｊｆｅスチール株式会社 Method for producing duplex stainless steel pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016172891A (en) * 2015-03-17 2016-09-29 Ｊｆｅスチール株式会社 Method for producing duplex stainless steel pipe

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