GB643857A - Extruding apparatus for forming tubes of uniform internal diameter and having an external diameter variable along the length of the tube - Google Patents

Extruding apparatus for forming tubes of uniform internal diameter and having an external diameter variable along the length of the tube

Info

Publication number
GB643857A
GB643857A GB2090/47A GB209047A GB643857A GB 643857 A GB643857 A GB 643857A GB 2090/47 A GB2090/47 A GB 2090/47A GB 209047 A GB209047 A GB 209047A GB 643857 A GB643857 A GB 643857A
Authority
GB
United Kingdom
Prior art keywords
mandrel
tube
internal diameter
length
uniform internal
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
Application number
GB2090/47A
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.)
DURALUMIN
Compagnie Generale du Duralumin et du Cuivre SA
Original Assignee
DURALUMIN
Compagnie Generale du Duralumin et du Cuivre SA
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 DURALUMIN, Compagnie Generale du Duralumin et du Cuivre SA filed Critical DURALUMIN
Publication of GB643857A publication Critical patent/GB643857A/en
Expired legal-status Critical Current

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

Landscapes

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

Abstract

643,857. Extruding. COMPAGNIEGENERALE DU DURALUMIN ET DU CIUVRE. Jan. 23, 1947, No. 2090. Convention date, Feb. 15, 1946. [Class 83 (iv)] A press for extruding tubes having a uniform internal diameter and an external diameter varying along the length of the tube comprises a circular die 10, and a mandrel having a conical part 4 adapted to be advanced through the die as extrusion proceeds, thereby causing an increase in the wall thickness of the tube which is expanded to a constant internal diameter by a cylindrical end portion 5 of the mandrel. The inner end of the mandrel is screwed into a piercing ram or mandrel holder 6 extending through a hollow pressing ram 7 or, alternatively may be fixed to the pressing ram. An oppositely tapered portion 3 facilitates the extraction of the mandrel from the residue of the billet.
GB2090/47A 1946-02-15 1947-01-23 Extruding apparatus for forming tubes of uniform internal diameter and having an external diameter variable along the length of the tube Expired GB643857A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR643857X 1946-02-15

Publications (1)

Publication Number Publication Date
GB643857A true GB643857A (en) 1950-09-27

Family

ID=8999737

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2090/47A Expired GB643857A (en) 1946-02-15 1947-01-23 Extruding apparatus for forming tubes of uniform internal diameter and having an external diameter variable along the length of the tube

Country Status (2)

Country Link
ES (1) ES176785A1 (en)
GB (1) GB643857A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000021696A1 (en) * 1998-10-09 2000-04-20 Wyman-Gordon Company Apparatus and method for forming a pipe with increased wall-thickness at its ends
US6412324B2 (en) 1998-10-09 2002-07-02 Wyman-Gordon Company Apparatus and method for forming a double ended upset pipe
CN113305163A (en) * 2021-05-13 2021-08-27 重庆西重特种铝业有限公司 Drawing production process of equal-outer-diameter and variable-wall-thickness pipe

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000021696A1 (en) * 1998-10-09 2000-04-20 Wyman-Gordon Company Apparatus and method for forming a pipe with increased wall-thickness at its ends
US6155092A (en) * 1998-10-09 2000-12-05 Wyman-Gordon Company Apparatus and method for forming a double ended upset pipe
US6412324B2 (en) 1998-10-09 2002-07-02 Wyman-Gordon Company Apparatus and method for forming a double ended upset pipe
CN113305163A (en) * 2021-05-13 2021-08-27 重庆西重特种铝业有限公司 Drawing production process of equal-outer-diameter and variable-wall-thickness pipe

Also Published As

Publication number Publication date
ES176785A1 (en) 1947-03-16

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