JPH0585242B2 - - Google Patents

Info

Publication number
JPH0585242B2
JPH0585242B2 JP1072098A JP7209889A JPH0585242B2 JP H0585242 B2 JPH0585242 B2 JP H0585242B2 JP 1072098 A JP1072098 A JP 1072098A JP 7209889 A JP7209889 A JP 7209889A JP H0585242 B2 JPH0585242 B2 JP H0585242B2
Authority
JP
Japan
Prior art keywords
plug
tip
molybdenum
alloy
drilling
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.)
Expired - Lifetime
Application number
JP1072098A
Other languages
English (en)
Japanese (ja)
Other versions
JPH02251304A (ja
Inventor
Kenji Tsubochi
Yoshihito Sugimoto
Shusuke Kinugasa
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 JP7209889A priority Critical patent/JPH02251304A/ja
Publication of JPH02251304A publication Critical patent/JPH02251304A/ja
Publication of JPH0585242B2 publication Critical patent/JPH0585242B2/ja
Granted 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21B—ROLLING OF METAL
    • B21B19/00—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work
    • B21B19/02—Tube-rolling by rollers arranged outside the work and having their axes not perpendicular to the axis of the work the axes of the rollers being arranged essentially diagonally to the axis of the work, e.g. "cross" tube-rolling ; Diescher mills, Stiefel disc piercers or Stiefel rotary piercers
    • B21B19/04—Rolling basic material of solid, i.e. non-hollow, structure; Piercing, e.g. rotary piercing mills

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Earth Drilling (AREA)
  • Heat Treatment Of Articles (AREA)
  • Ceramic Products (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
JP7209889A 1989-03-24 1989-03-24 穿孔機用プラグ Granted JPH02251304A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7209889A JPH02251304A (ja) 1989-03-24 1989-03-24 穿孔機用プラグ

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7209889A JPH02251304A (ja) 1989-03-24 1989-03-24 穿孔機用プラグ

Publications (2)

Publication Number Publication Date
JPH02251304A JPH02251304A (ja) 1990-10-09
JPH0585242B2 true JPH0585242B2 (enrdf_load_html_response) 1993-12-06

Family

ID=13479597

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7209889A Granted JPH02251304A (ja) 1989-03-24 1989-03-24 穿孔機用プラグ

Country Status (1)

Country Link
JP (1) JPH02251304A (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11331703B2 (en) 2015-09-25 2022-05-17 Nippon Steel Corporation Piercer plug and method of manufacturing the same

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10024246A1 (de) * 2000-05-17 2001-11-22 Sms Demag Ag Lochdorn zum Schrägwalzen von metallischen Hohlkörpern auf Schrägwalzwerken
JP4462265B2 (ja) 2004-03-11 2010-05-12 住友金属工業株式会社 継目無管の穿孔圧延用プラグ、継目無管の製造装置およびこれらを用いた継目無管の製造方法
CN104507594B (zh) * 2012-08-24 2016-05-11 新日铁住金株式会社 热制管用插塞
DE102021128128A1 (de) * 2021-10-28 2023-05-04 Vallourec Deutschland Gmbh Lochdorn mit einer Lochdornnase zur Herstellung nahtloser Rohre

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5588303U (enrdf_load_html_response) * 1978-12-15 1980-06-18
JPS62207503A (ja) * 1986-03-10 1987-09-11 Nippon Kokan Kk <Nkk> 高合金鋼継目無管製造用プラグ

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11331703B2 (en) 2015-09-25 2022-05-17 Nippon Steel Corporation Piercer plug and method of manufacturing the same

Also Published As

Publication number Publication date
JPH02251304A (ja) 1990-10-09

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