DE69907711D1 - DEVICE AND METHOD FOR PRODUCING A TUBE WITH ENLARGED WALL THICKNESSES AT ITS END - Google Patents
DEVICE AND METHOD FOR PRODUCING A TUBE WITH ENLARGED WALL THICKNESSES AT ITS ENDInfo
- Publication number
- DE69907711D1 DE69907711D1 DE69907711T DE69907711T DE69907711D1 DE 69907711 D1 DE69907711 D1 DE 69907711D1 DE 69907711 T DE69907711 T DE 69907711T DE 69907711 T DE69907711 T DE 69907711T DE 69907711 D1 DE69907711 D1 DE 69907711D1
- Authority
- DE
- Germany
- Prior art keywords
- bore
- pipe
- mandrel
- billet
- metal
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C25/00—Profiling tools for metal extruding
- B21C25/08—Dies or mandrels with section variable during extruding, e.g. for making tapered work; Controlling variation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/04—Making uncoated products by direct extrusion
- B21C23/08—Making wire, bars, tubes
- B21C23/085—Making tubes
Abstract
Apparatus for and method of extruding a metal pipe having a uniform inner diameter, and forward and rearward end sections (62, 66) which are thicker than the middle section (64) of the pipe. A metal billet (54) having a bore (56) is inserted into an open ended cylindrical bore of a stationary container (12). The billet (54) is moved axially within the bore of the container (12) by a press (13) which includes a pressing surface (38, 39) and a mandrel (44) extending forwardly from the pressing surface through the bore of toward the billet (54). The mandrel (44) has a cylindrical large diameter rearward portion (48), a cylindrical small diameter middle portion (50) and a forwardly and outwardly tapering forward portion (52). Metal from the billet (54) is forced through the small diameter bore of a two part removable first die (20) around the middle portion (50) of the mandrel (44) by moving the press forwardly for a first distance to form a preliminary forward end section (62) of pipe. The press is moved forwardly for a second distance for forcing metal from the billet through the bore of the first die (51) around the rearward portion (48) of the mandrel for extruding the middle section (64) of pipe and causing the preliminary forward end section (62) of pipe to pass over the tapered forward portion (52) of the mandrel to form the forward end section (62) of pipe. The press is moved forwardly for a third distance for forcing metal from the billet through the relatively large bore of a second die (53) around the rearward portion (48) of the mandrel to form the rearward end section (66) of pipe.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10379898P | 1998-10-09 | 1998-10-09 | |
PCT/US1999/023618 WO2000021696A1 (en) | 1998-10-09 | 1999-10-08 | Apparatus and method for forming a pipe with increased wall-thickness at its ends |
Publications (1)
Publication Number | Publication Date |
---|---|
DE69907711D1 true DE69907711D1 (en) | 2003-06-12 |
Family
ID=22297083
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69907711T Expired - Lifetime DE69907711D1 (en) | 1998-10-09 | 1999-10-08 | DEVICE AND METHOD FOR PRODUCING A TUBE WITH ENLARGED WALL THICKNESSES AT ITS END |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP1121209B1 (en) |
JP (1) | JP2002527241A (en) |
CN (1) | CN1326387A (en) |
AT (1) | ATE239562T1 (en) |
AU (1) | AU1108600A (en) |
BR (1) | BR9914346A (en) |
CA (1) | CA2346705A1 (en) |
CZ (1) | CZ20011246A3 (en) |
DE (1) | DE69907711D1 (en) |
MX (1) | MXPA01003613A (en) |
NO (1) | NO20011682L (en) |
OA (1) | OA11911A (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100443208C (en) * | 2006-11-10 | 2008-12-17 | 钱宗富 | Method for extruding and stretching short pipe to long pipe and its cold extrusion device |
DE102009052482A1 (en) | 2009-02-11 | 2010-08-19 | Sms Meer Gmbh | Method and device for producing tubular workpieces from a pre-punched hollow block |
JP5563874B2 (en) * | 2010-04-15 | 2014-07-30 | 前田建設工業株式会社 | Metal pipe injection material take-out machine |
CN103736768B (en) * | 2013-12-31 | 2015-09-23 | 西南石油大学 | Internal diameter constant two ends wall thickness increases pressurizing unit and the pressing method of tubing |
CN104384220B (en) * | 2014-12-10 | 2017-01-04 | 常州市腾田液压机械有限公司 | Tubing pyrocondensation or heat expand shaping machine set |
CN105149372B (en) * | 2015-09-30 | 2017-06-16 | 核兴航材(天津)科技有限公司 | A kind of asymmetric seamless hollow profile manufacturing process |
CN109346596B (en) * | 2018-09-11 | 2020-06-12 | 中国科学院上海硅酸盐研究所 | Preparation device and method for annular thermoelectric device |
CN110227730B (en) * | 2019-06-13 | 2020-11-17 | 北京科技大学 | Extrusion device and method for producing variable-section seamless pipe |
CN113357220B (en) * | 2021-06-01 | 2023-07-14 | 内蒙古北方重工业集团有限公司 | Vertical extruder core rod oil cylinder and piston rod protection device thereof |
-
1999
- 1999-10-08 AT AT99954830T patent/ATE239562T1/en not_active IP Right Cessation
- 1999-10-08 CZ CZ20011246A patent/CZ20011246A3/en unknown
- 1999-10-08 OA OA00100091A patent/OA11911A/en unknown
- 1999-10-08 MX MXPA01003613A patent/MXPA01003613A/en unknown
- 1999-10-08 CA CA002346705A patent/CA2346705A1/en not_active Abandoned
- 1999-10-08 DE DE69907711T patent/DE69907711D1/en not_active Expired - Lifetime
- 1999-10-08 EP EP99954830A patent/EP1121209B1/en not_active Expired - Lifetime
- 1999-10-08 AU AU11086/00A patent/AU1108600A/en not_active Abandoned
- 1999-10-08 CN CN99813407.4A patent/CN1326387A/en active Pending
- 1999-10-08 BR BR9914346-1A patent/BR9914346A/en not_active IP Right Cessation
- 1999-10-08 JP JP2000575648A patent/JP2002527241A/en active Pending
-
2001
- 2001-04-04 NO NO20011682A patent/NO20011682L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
JP2002527241A (en) | 2002-08-27 |
EP1121209B1 (en) | 2003-05-07 |
OA11911A (en) | 2006-04-10 |
NO20011682D0 (en) | 2001-04-04 |
NO20011682L (en) | 2001-05-16 |
AU1108600A (en) | 2000-05-01 |
MXPA01003613A (en) | 2002-09-18 |
EP1121209A1 (en) | 2001-08-08 |
CN1326387A (en) | 2001-12-12 |
BR9914346A (en) | 2002-01-15 |
CZ20011246A3 (en) | 2002-02-13 |
ATE239562T1 (en) | 2003-05-15 |
CA2346705A1 (en) | 2000-04-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8332 | No legal effect for de |