GB922794A - Improvements in or relating to a method of direct extrusion - Google Patents

Improvements in or relating to a method of direct extrusion

Info

Publication number
GB922794A
GB922794A GB1681060A GB1681060A GB922794A GB 922794 A GB922794 A GB 922794A GB 1681060 A GB1681060 A GB 1681060A GB 1681060 A GB1681060 A GB 1681060A GB 922794 A GB922794 A GB 922794A
Authority
GB
United Kingdom
Prior art keywords
extrusion
mandrel
tube
billet
die
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
GB1681060A
Inventor
Laurence Reginald Hawtin
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1681060A priority Critical patent/GB922794A/en
Priority to CH539461A priority patent/CH383300A/en
Publication of GB922794A publication Critical patent/GB922794A/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)
  • Extrusion Of Metal (AREA)

Abstract

922,794. Extruding pipe fittings. IMPERIAL CHEMICAL INDUSTRIES Ltd. April 26, 1961 [May 12, 1960], No. 16810/60. Classes 83 (2) and 83 (4). An extruded tube has end parts 11, 15 of uniform wall thickness and an intermediate part 13 of uniform smaller wall thickness. A hollow billet 9, particularly of magnesium-base alloy heated to 320‹ C. and lubricated, is extruded from a lubricated container 1 between a die orifice 10 and mandrel 6, 7. The billet has a rear surface shaped to conform with a concave leading surface 4 of the extrusion ram 3, as described in Specification 732,603. During the initial part of the extrusion, mandrel portion 6 extends through the die whereby the tick leading end 11 of the tube is formed. As extrusion proceeds, the mandrel is advanced so that the thicker portion 7 enters the die orifice and forms the step 12 and intermediate part 13. Extrusion is then stopped, the ram and mandrel are withdrawn, a new billet 14 with shaped leading and trailing ends is placed on top of the original billet and extrusion is continued using the thicker mandrel portion 6 to form the rear end 15 of the tube. Longitudinal external fins may be formed during the extrusion by using a suitable die section. A plug may be subsequently drawn through the tube to give it a uniform bore with a stepped external shape.
GB1681060A 1960-05-12 1960-05-12 Improvements in or relating to a method of direct extrusion Expired GB922794A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1681060A GB922794A (en) 1960-05-12 1960-05-12 Improvements in or relating to a method of direct extrusion
CH539461A CH383300A (en) 1960-05-12 1961-05-08 Process for the production of a pipe and pipe produced according to this

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1681060A GB922794A (en) 1960-05-12 1960-05-12 Improvements in or relating to a method of direct extrusion

Publications (1)

Publication Number Publication Date
GB922794A true GB922794A (en) 1963-04-03

Family

ID=10084075

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1681060A Expired GB922794A (en) 1960-05-12 1960-05-12 Improvements in or relating to a method of direct extrusion

Country Status (2)

Country Link
CH (1) CH383300A (en)
GB (1) GB922794A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009030600A1 (en) 2008-07-02 2010-01-21 Tekfor Cologne Gmbh Production process of pipe material
DE102009016654A1 (en) 2009-04-07 2010-10-14 Tekfor Cologne Gmbh Production process of pipe material
CN102921754A (en) * 2012-11-14 2013-02-13 广东伟业铝厂有限公司 Producing method of aluminum alloy seamless stage variable section pipe and preparation device
CN103191950A (en) * 2013-04-03 2013-07-10 哈尔滨理工大学 Device and method for extrusion forming of section-variable hollow member
CN109454121A (en) * 2018-12-21 2019-03-12 崇州天智轻量化制造有限公司 The hot extrusion shaping mold of metal composite pipe and the method for preparing metal composite pipe
CN114340812A (en) * 2019-09-06 2022-04-12 株式会社三五 Extrusion molding method and extrusion molding device for unequal-thickness pipes

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5241848A (en) * 1990-07-09 1993-09-07 Simon Joseph A Light weight drive shaft
US5105644A (en) * 1990-07-09 1992-04-21 Simon Joseph A Light weight drive shaft

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009030600A1 (en) 2008-07-02 2010-01-21 Tekfor Cologne Gmbh Production process of pipe material
DE102009016654A1 (en) 2009-04-07 2010-10-14 Tekfor Cologne Gmbh Production process of pipe material
WO2010115405A1 (en) 2009-04-07 2010-10-14 Tekfor Cologne Gmbh Method for producing pipe material
CN102921754A (en) * 2012-11-14 2013-02-13 广东伟业铝厂有限公司 Producing method of aluminum alloy seamless stage variable section pipe and preparation device
CN103191950A (en) * 2013-04-03 2013-07-10 哈尔滨理工大学 Device and method for extrusion forming of section-variable hollow member
CN109454121A (en) * 2018-12-21 2019-03-12 崇州天智轻量化制造有限公司 The hot extrusion shaping mold of metal composite pipe and the method for preparing metal composite pipe
CN114340812A (en) * 2019-09-06 2022-04-12 株式会社三五 Extrusion molding method and extrusion molding device for unequal-thickness pipes
CN114340812B (en) * 2019-09-06 2024-02-06 株式会社三五 Extrusion molding method and extrusion molding device for non-uniform thickness pipes

Also Published As

Publication number Publication date
CH383300A (en) 1964-10-31

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