IT8050434A0 - Perfezionamento nelle spine per laminatoi a perforazione in particolare per la fabbricazione di tubi di acciaio senza saldatura - Google Patents
Perfezionamento nelle spine per laminatoi a perforazione in particolare per la fabbricazione di tubi di acciaio senza saldaturaInfo
- Publication number
- IT8050434A0 IT8050434A0 IT8050434A IT5043480A IT8050434A0 IT 8050434 A0 IT8050434 A0 IT 8050434A0 IT 8050434 A IT8050434 A IT 8050434A IT 5043480 A IT5043480 A IT 5043480A IT 8050434 A0 IT8050434 A0 IT 8050434A0
- Authority
- IT
- Italy
- Prior art keywords
- pins
- improvement
- manufacture
- seamless steel
- steel tubes
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title 1
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
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP54167515A JPS5913924B2 (ja) | 1979-12-25 | 1979-12-25 | 穿孔圧延機用芯金 |
Publications (2)
Publication Number | Publication Date |
---|---|
IT8050434A0 true IT8050434A0 (it) | 1980-12-22 |
IT1143903B IT1143903B (it) | 1986-10-29 |
Family
ID=15851107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT50434/80A IT1143903B (it) | 1979-12-25 | 1980-12-22 | Perfezionamento nelle spine per la minatoi a perfazione in particolare per la fabericazione di tubi di acciaio senza saldatura |
Country Status (7)
Country | Link |
---|---|
US (1) | US4393677A (it) |
JP (1) | JPS5913924B2 (it) |
CA (1) | CA1147615A (it) |
DE (1) | DE3048691A1 (it) |
FR (1) | FR2472423A1 (it) |
GB (1) | GB2069904B (it) |
IT (1) | IT1143903B (it) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3114177C2 (de) * | 1981-04-03 | 1984-08-23 | Mannesmann AG, 4000 Düsseldorf | Verfahren zum Herstellen eines Arbeitswerkzeuges zur spanlosen Warmverformung von Stahl und Warmarbeitswerkzeug |
JPH068175B2 (ja) * | 1987-12-23 | 1994-02-02 | 日機装株式会社 | 超伝導膜の製造法 |
DE4112614C2 (de) * | 1991-04-15 | 1994-10-27 | Fraunhofer Ges Forschung | Dorn zur Kalt- und/oder Warmumformung von metallischem Gut und Verfahren zu seiner Herstellung |
DE29714853U1 (de) * | 1997-08-19 | 1997-10-16 | Haefele Gmbh & Co | Einteiliger Beschlag |
WO2000031313A1 (de) * | 1998-11-25 | 2000-06-02 | Joma Chemical As | Werkstoff und verfahren zum herstellen einer korrosions- und verschleissfesten schicht durch thermisches spritzen |
DE10025161A1 (de) * | 2000-05-23 | 2001-11-29 | Joma Chemicals As Limingen | Werstoff und Verfahren zum Herstellen einer korrosions-und verschleißfesten Schicht durch thermisches Spitzen |
US6851831B2 (en) * | 2002-04-16 | 2005-02-08 | Gelcore Llc | Close packing LED assembly with versatile interconnect architecture |
DE50310708D1 (de) * | 2002-06-28 | 2008-12-11 | November Ag Molekulare Medizin | Vorrichtung und verfahren zum elektrochemischen nachweis |
WO2005087401A1 (ja) * | 2004-03-11 | 2005-09-22 | Sumitomo Metal Industries, Ltd. | 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 |
WO2008096708A1 (ja) * | 2007-02-05 | 2008-08-14 | Sumitomo Metal Industries, Ltd. | 金属素材の穿孔圧延に用いられるプラグの製造方法、金属管の製造方法及び金属素材の穿孔圧延に用いられるプラグ |
DE102007032804B3 (de) * | 2007-07-10 | 2008-09-04 | V&M Deutschland Gmbh | Schmiededorn zum Warmschmieden rohrförmiger Werkstücke aus Metall |
WO2009057471A1 (ja) * | 2007-11-01 | 2009-05-07 | Sumitomo Metal Industries, Ltd. | 穿孔圧延用プラグ、その穿孔圧延用プラグの再生方法、およびその穿孔圧延用プラグの再生設備列 |
JP5169982B2 (ja) * | 2009-03-03 | 2013-03-27 | 新日鐵住金株式会社 | プラグ、穿孔圧延機、およびそれを用いた継目無管の製造方法 |
CN102534604B (zh) * | 2012-02-09 | 2014-04-09 | 常州大学 | 一种提高无缝钢管穿孔顶头使用寿命的方法 |
WO2013153878A1 (ja) | 2012-04-11 | 2013-10-17 | 新日鐵住金株式会社 | 穿孔機に用いられるプラグ及びプラグの再生方法 |
JP5566417B2 (ja) * | 2012-04-19 | 2014-08-06 | 新日鐵住金株式会社 | 穿孔プラグの製造方法 |
JP5365723B2 (ja) * | 2012-04-24 | 2013-12-11 | 新日鐵住金株式会社 | 穿孔圧延用プラグの製造方法 |
JP5273272B1 (ja) * | 2012-04-25 | 2013-08-28 | 新日鐵住金株式会社 | 穿孔圧延用プラグの製造方法 |
RU2598414C2 (ru) * | 2012-06-05 | 2016-09-27 | Ниппон Стил Энд Сумитомо Метал Корпорейшн | Способ изготовления оправки для прошивной прокатки |
JP5339016B1 (ja) * | 2012-06-05 | 2013-11-13 | 新日鐵住金株式会社 | 穿孔圧延用プラグの製造方法 |
EP2875876B1 (en) * | 2012-07-20 | 2017-05-03 | Nippon Steel & Sumitomo Metal Corporation | Piercing plug |
US10300513B2 (en) | 2012-08-28 | 2019-05-28 | Nippon Steel & Sumitomo Metal Corporation | Piercing plug and manufacturing method of piercing plug |
BR112015008558B1 (pt) * | 2013-01-11 | 2021-02-09 | Nippon Steel Corporation | tampão para a produção de tubo a quente |
DE102013110725B3 (de) * | 2013-09-27 | 2015-02-12 | Vallourec Deutschland Gmbh | Lochdorn mit verbesserter Standzeit zur Herstellung nahtloser Rohre |
CN103521524A (zh) * | 2013-10-25 | 2014-01-22 | 江苏南山冶金机械制造有限公司 | 复合顶头 |
DE102014016502A1 (de) | 2014-11-07 | 2016-05-12 | Hua Guo | Warmumformwerkzeug mit verstärkter Oxid-Schutzschicht |
EP3354361B1 (en) * | 2015-09-25 | 2020-10-07 | Nippon Steel Corporation | Piercer plug and manufacturing method therefor |
EP3767002A1 (en) * | 2018-03-14 | 2021-01-20 | Nippon Steel Corporation | Piercer plug |
JP7176344B2 (ja) * | 2018-10-18 | 2022-11-22 | 日本製鉄株式会社 | ピアサ-プラグ及びその製造方法 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2197098A (en) * | 1936-12-07 | 1940-04-16 | Nat Tube Co | Mandrel |
US2941910A (en) * | 1958-01-24 | 1960-06-21 | Selas Corp Of America | Method for heat treating steel piercer points |
DE1444912B1 (de) * | 1962-02-22 | 1970-08-27 | Schloemann Ag | Verfahren zum Strangpressen von Schwermetallen,insbesondere von Stahl |
US3237441A (en) * | 1963-05-01 | 1966-03-01 | Babcock & Wilcox Co | Tube rolling mill plugs |
US3295346A (en) * | 1964-02-11 | 1967-01-03 | Crucible Steel Co America | Methods for the elevated temperature protection of metallic surface, and coatings therefor |
US3962897A (en) * | 1965-10-05 | 1976-06-15 | Columbiana Foundry Company | Metal working apparatus and methods of piercing |
-
1979
- 1979-12-25 JP JP54167515A patent/JPS5913924B2/ja not_active Expired
-
1980
- 1980-12-12 US US06/215,753 patent/US4393677A/en not_active Expired - Fee Related
- 1980-12-22 CA CA000367298A patent/CA1147615A/en not_active Expired
- 1980-12-22 IT IT50434/80A patent/IT1143903B/it active
- 1980-12-23 GB GB8041205A patent/GB2069904B/en not_active Expired
- 1980-12-23 DE DE19803048691 patent/DE3048691A1/de active Granted
- 1980-12-24 FR FR8027472A patent/FR2472423A1/fr active Granted
Also Published As
Publication number | Publication date |
---|---|
CA1147615A (en) | 1983-06-07 |
FR2472423A1 (fr) | 1981-07-03 |
IT1143903B (it) | 1986-10-29 |
FR2472423B1 (it) | 1984-03-16 |
JPS5913924B2 (ja) | 1984-04-02 |
DE3048691A1 (de) | 1981-09-24 |
DE3048691C2 (it) | 1988-03-10 |
GB2069904A (en) | 1981-09-03 |
US4393677A (en) | 1983-07-19 |
GB2069904B (en) | 1983-03-16 |
JPS5691912A (en) | 1981-07-25 |
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