EP0356743A3 - Dornstange für Rohrwalzwerke - Google Patents
Dornstange für Rohrwalzwerke Download PDFInfo
- Publication number
- EP0356743A3 EP0356743A3 EP19890114240 EP89114240A EP0356743A3 EP 0356743 A3 EP0356743 A3 EP 0356743A3 EP 19890114240 EP19890114240 EP 19890114240 EP 89114240 A EP89114240 A EP 89114240A EP 0356743 A3 EP0356743 A3 EP 0356743A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- rolling mills
- tube rolling
- mandrel rod
- annular gap
- mandrel
- 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.)
- Withdrawn
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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Articles (AREA)
- Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
Abstract
Die Dornstange (1) für Rohrwalzwerke, bei denen die Luppe (5) auf der
Dornstange (1) gewalzt wird, besteht aus zwei ineinandergesteckten Rohren
(2, 3). Der Ringspalt (4) zwischen den Rohren (2, 3) ist mit einem Duroplast
ausgefüllt, dessen Ausdehnungskoeffizient so groß gewählt ist, daß der Du
roplast auch bei Temperaturdifferenzen zwischen den Rohren (2, 3) den
Ringspalt (4) vollständig ausfüllt.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH3254/88 | 1988-08-31 | ||
CH3254/88A CH679462A5 (de) | 1988-08-31 | 1988-08-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0356743A2 EP0356743A2 (de) | 1990-03-07 |
EP0356743A3 true EP0356743A3 (de) | 1991-03-27 |
Family
ID=4251996
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19890114240 Withdrawn EP0356743A3 (de) | 1988-08-31 | 1989-08-02 | Dornstange für Rohrwalzwerke |
Country Status (6)
Country | Link |
---|---|
US (1) | US4956988A (de) |
EP (1) | EP0356743A3 (de) |
JP (1) | JPH02104406A (de) |
CN (1) | CN1040747A (de) |
BR (1) | BR8904379A (de) |
CH (1) | CH679462A5 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5186035A (en) * | 1992-02-18 | 1993-02-16 | General Electric Company | Tube loading sleeve for pilger mill |
US8161786B2 (en) * | 2008-04-15 | 2012-04-24 | Glen Stapleton | Apparatus for feeding and turning tube products into a pilger mill machine |
CN103801558B (zh) * | 2014-01-27 | 2015-12-30 | 胜利油田康贝石油工程装备有限公司 | 石油用割缝管的梯型缝加工方法和设备 |
CN104138914B (zh) * | 2014-07-29 | 2016-10-26 | 湖北新冶钢特种钢管有限公司 | 一种顶管机固定扣瓦 |
Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1989507A (en) * | 1933-05-03 | 1935-01-29 | Diescher Tube Mills Inc | Rolling mill mandrel |
US2025439A (en) * | 1933-05-20 | 1935-12-24 | Brownstein Benjamin | Mandrel bar for continuous tube rolling mills |
FR822733A (fr) * | 1936-06-11 | 1938-01-06 | Witkowitzer Bergb Gewerkschaft | Procédé de laminage des tubes dit: au pas de pèlerin |
FR1096089A (fr) * | 1953-03-24 | 1955-06-08 | Perfectionnements dans les mandrins de laminage à refroidissement intérieur et dans les dispositions d'adduction à ces mandrins du fluide réfrigérant | |
GB1162338A (en) * | 1967-04-07 | 1969-08-27 | Wiggin & Co Ltd Henry | Extrusion Mandrel |
US3918284A (en) * | 1973-04-20 | 1975-11-11 | Youngstown Sheet And Tube Co | Seamless tube mill piercer mandrel and assembly |
SU719720A1 (ru) * | 1978-01-02 | 1980-03-10 | Московский Ордена Трудового Красного Знамени Институт Стали И Сплавов | Составной дорн дл пилигримовой прокатки труб |
JPS55103200A (en) * | 1979-01-31 | 1980-08-07 | Nippon Kokan Kk <Nkk> | Manufacturing method of external bottom plate for double-walled low temperature tank |
DE3429524A1 (de) * | 1984-08-10 | 1986-02-20 | Kocks Technik Gmbh & Co, 4010 Hilden | Dornstange oder stopfen fuer eine walzstrasse zum herstellen nahtloser rohre |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL130355C (de) * | 1964-09-09 | |||
JPS5856648B2 (ja) * | 1979-01-31 | 1983-12-16 | 新日本製鐵株式会社 | 管の連続圧延法 |
US4819471A (en) * | 1986-10-31 | 1989-04-11 | Westinghouse Electric Corp. | Pilger die for tubing production |
-
1988
- 1988-08-31 CH CH3254/88A patent/CH679462A5/de not_active IP Right Cessation
-
1989
- 1989-08-02 EP EP19890114240 patent/EP0356743A3/de not_active Withdrawn
- 1989-08-22 US US07/396,917 patent/US4956988A/en not_active Expired - Fee Related
- 1989-08-25 JP JP1217658A patent/JPH02104406A/ja active Pending
- 1989-08-25 CN CN89106963A patent/CN1040747A/zh active Pending
- 1989-08-31 BR BR898904379A patent/BR8904379A/pt unknown
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1989507A (en) * | 1933-05-03 | 1935-01-29 | Diescher Tube Mills Inc | Rolling mill mandrel |
US2025439A (en) * | 1933-05-20 | 1935-12-24 | Brownstein Benjamin | Mandrel bar for continuous tube rolling mills |
FR822733A (fr) * | 1936-06-11 | 1938-01-06 | Witkowitzer Bergb Gewerkschaft | Procédé de laminage des tubes dit: au pas de pèlerin |
FR1096089A (fr) * | 1953-03-24 | 1955-06-08 | Perfectionnements dans les mandrins de laminage à refroidissement intérieur et dans les dispositions d'adduction à ces mandrins du fluide réfrigérant | |
GB1162338A (en) * | 1967-04-07 | 1969-08-27 | Wiggin & Co Ltd Henry | Extrusion Mandrel |
US3918284A (en) * | 1973-04-20 | 1975-11-11 | Youngstown Sheet And Tube Co | Seamless tube mill piercer mandrel and assembly |
SU719720A1 (ru) * | 1978-01-02 | 1980-03-10 | Московский Ордена Трудового Красного Знамени Институт Стали И Сплавов | Составной дорн дл пилигримовой прокатки труб |
JPS55103200A (en) * | 1979-01-31 | 1980-08-07 | Nippon Kokan Kk <Nkk> | Manufacturing method of external bottom plate for double-walled low temperature tank |
DE3429524A1 (de) * | 1984-08-10 | 1986-02-20 | Kocks Technik Gmbh & Co, 4010 Hilden | Dornstange oder stopfen fuer eine walzstrasse zum herstellen nahtloser rohre |
Also Published As
Publication number | Publication date |
---|---|
CN1040747A (zh) | 1990-03-28 |
US4956988A (en) | 1990-09-18 |
JPH02104406A (ja) | 1990-04-17 |
EP0356743A2 (de) | 1990-03-07 |
BR8904379A (pt) | 1990-04-17 |
CH679462A5 (de) | 1992-02-28 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): BE CH DE ES FR GB IT LI NL |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): BE CH DE ES FR GB IT LI NL |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19910928 |