BR9914346A - Apparatus and method for forming a tube with increased wall thickness at its ends - Google Patents

Apparatus and method for forming a tube with increased wall thickness at its ends

Info

Publication number
BR9914346A
BR9914346A BR9914346-1A BR9914346A BR9914346A BR 9914346 A BR9914346 A BR 9914346A BR 9914346 A BR9914346 A BR 9914346A BR 9914346 A BR9914346 A BR 9914346A
Authority
BR
Brazil
Prior art keywords
bore
pipe
mandrel
billet
metal
Prior art date
Application number
BR9914346-1A
Other languages
Portuguese (pt)
Inventor
Donald P Sahlem
Original Assignee
Wyman Gordon Co
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 Wyman Gordon Co filed Critical Wyman Gordon Co
Priority claimed from PCT/US1999/023618 external-priority patent/WO2000021696A1/en
Publication of BR9914346A publication Critical patent/BR9914346A/en

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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Of Metal (AREA)
  • Forging (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Metal Extraction Processes (AREA)

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.
BR9914346-1A 1998-10-09 1999-10-08 Apparatus and method for forming a tube with increased wall thickness at its ends BR9914346A (en)

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
BR9914346A true BR9914346A (en) 2002-01-15

Family

ID=22297083

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9914346-1A BR9914346A (en) 1998-10-09 1999-10-08 Apparatus and method for forming a tube with increased wall thickness at its ends

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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
EP1121209A1 (en) 2001-08-08
OA11911A (en) 2006-04-10
MXPA01003613A (en) 2002-09-18
EP1121209B1 (en) 2003-05-07
ATE239562T1 (en) 2003-05-15
CZ20011246A3 (en) 2002-02-13
CA2346705A1 (en) 2000-04-20
AU1108600A (en) 2000-05-01
JP2002527241A (en) 2002-08-27
NO20011682L (en) 2001-05-16
CN1326387A (en) 2001-12-12
DE69907711D1 (en) 2003-06-12
NO20011682D0 (en) 2001-04-04

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 4A , 5A , 6A E 7A ANUIDADES.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 1865 DE 03/10/2006.