GB2034226B - Sheaths and workpieces for extruding objects particularly tubes and a process for producing the sheaths and workpieces - Google Patents

Sheaths and workpieces for extruding objects particularly tubes and a process for producing the sheaths and workpieces

Info

Publication number
GB2034226B
GB2034226B GB7937062A GB7937062A GB2034226B GB 2034226 B GB2034226 B GB 2034226B GB 7937062 A GB7937062 A GB 7937062A GB 7937062 A GB7937062 A GB 7937062A GB 2034226 B GB2034226 B GB 2034226B
Authority
GB
United Kingdom
Prior art keywords
sheaths
workpieces
casing
pipes
producing
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
GB7937062A
Other versions
GB2034226A (en
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.)
Granges Nyby AB
Original Assignee
Granges Nyby AB
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
Priority claimed from DE2846660A external-priority patent/DE2846660C2/en
Priority claimed from DE19782846659 external-priority patent/DE2846659A1/en
Priority claimed from DE19782846658 external-priority patent/DE2846658C2/en
Application filed by Granges Nyby AB filed Critical Granges Nyby AB
Publication of GB2034226A publication Critical patent/GB2034226A/en
Application granted granted Critical
Publication of GB2034226B publication Critical patent/GB2034226B/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/1208—Containers or coating used therefor
    • B22F3/1258—Container manufacturing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/20—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by extruding

Abstract

A casing for isostatically pressed pieces, which are intended for the extrusion of metal articles, in particular stainless steel metal pipes. The outer and inner envelopes (302, 304) of the casing (301) are comprised of a thin metal sheet: the outer envelope (302) at least has, along the periphery thereof, resistance characteristic substantially uniform in the axial direction and it consists of, in particular, a spiral welded pipe and is provided, preferably, with a bulge directed outwardly, opposed to the narrowing. It is provided, at least at the front part of the casing an intermediary piece which is made of one or several parts; this piece is obtained from ductile material or from a material obtained by compression of a powder. It is also provided a method for producing such casings and pressed pieces and a method for the extrusion of pipes as well as pipes obtained by such method.
GB7937062A 1978-10-26 1979-10-25 Sheaths and workpieces for extruding objects particularly tubes and a process for producing the sheaths and workpieces Expired GB2034226B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE2846660A DE2846660C2 (en) 1978-10-26 1978-10-26 Annular casing for extrusion bolts for the powder metallurgical production of pipes
DE19782846659 DE2846659A1 (en) 1978-10-26 1978-10-26 Powder filled capsule for use as extrusion blank - for making stainless steel or nickel-chromium alloy tubes, is isostatically pressed after filling
DE19782846658 DE2846658C2 (en) 1978-10-26 1978-10-26 Metallic shell for the production of extrusion billets for the powder metallurgical production of pipes

Publications (2)

Publication Number Publication Date
GB2034226A GB2034226A (en) 1980-06-04
GB2034226B true GB2034226B (en) 1982-09-29

Family

ID=27187716

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7937062A Expired GB2034226B (en) 1978-10-26 1979-10-25 Sheaths and workpieces for extruding objects particularly tubes and a process for producing the sheaths and workpieces

Country Status (23)

Country Link
EP (1) EP0020536B1 (en)
AT (2) AT374387B (en)
BE (1) BE879623A (en)
BR (1) BR7906929A (en)
CA (1) CA1120005A (en)
CH (1) CH652054A5 (en)
CS (1) CS216687B2 (en)
DE (1) DE2967396D1 (en)
DK (1) DK153742C (en)
ES (3) ES8104027A1 (en)
FI (1) FI61649C (en)
FR (1) FR2439639A1 (en)
GB (1) GB2034226B (en)
HU (1) HU179975B (en)
IT (1) IT1127798B (en)
MX (1) MX150474A (en)
NL (1) NL7907894A (en)
NO (1) NO151779C (en)
PL (1) PL132096B1 (en)
RO (1) RO79124A (en)
SE (1) SE441336B (en)
SU (1) SU1369666A3 (en)
WO (1) WO1980000803A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2492291A1 (en) * 1980-10-22 1982-04-23 Uk I Sp Container for hot extrusion of metal powder - with flow-modifying profiling element(s) to improve prod. yield
DE3530741C1 (en) * 1985-08-28 1993-01-14 Avesta Nyby Powder AB, Torshälla Process for the manufacture of powder metallurgical objects
US4640814A (en) * 1985-10-17 1987-02-03 Crucible Materials Corporation Method for producing clad tubular product
US4640815A (en) * 1985-10-17 1987-02-03 Crucible Materials Corporation Method and assembly for producing extrusion-clad tubular product
SE8603686D0 (en) * 1986-09-03 1986-09-03 Avesta Nyby Powder Ab HAUL
FR2704465B1 (en) * 1993-04-29 1995-06-23 Alsthom Intermagnetics Sa Mono or multifilament composite billet closure piece.
SE505247C2 (en) * 1994-12-07 1997-07-21 Sandvik Ab Process for manufacturing memory metal tubes
US5689976A (en) * 1996-10-24 1997-11-25 Ansell Edmont Industrial, Inc. Reinforced glove and method for forming the same
GB201119240D0 (en) * 2011-11-08 2011-12-21 Rolls Royce Plc A hot isostatic pressing tool and a method of manufacturing an article from powder material by hot isostatic pressing
GB201119238D0 (en) * 2011-11-08 2011-12-21 Rolls Royce Plc A hot isostatic pressing tool and a method of manufacturing an article from powder material by hot isostatic pressing
CZ308392B6 (en) * 2017-09-08 2020-07-22 UJP PRAHA a.s. Powder moulding for efficient sintering

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH316476A (en) * 1952-06-13 1956-10-15 Ici Ltd Process for protecting bodies formed from metal powder against oxidation
FR1164348A (en) * 1956-01-10 1958-10-08 Oerlikon Buehrle Ag Manufacturing process of extruded profiled bodies in ferrous powder
BE709814A (en) * 1968-01-24 1968-05-30
US3823463A (en) * 1972-07-13 1974-07-16 Federal Mogul Corp Metal powder extrusion process
DE2419014C3 (en) * 1974-04-19 1985-08-01 Nyby Bruks AB, Nybybruk Method of manufacturing stainless steel pipes and application of the method to the manufacture of composite pipes
US3892030A (en) * 1974-04-29 1975-07-01 Us Air Force Method of fabricating a billet from metal preforms and metal powder
DE2737248C2 (en) * 1977-08-18 1985-09-19 MTU Motoren- und Turbinen-Union München GmbH, 8000 München High strength component with a complex geometric shape and process for its manufacture

Also Published As

Publication number Publication date
DK153742C (en) 1989-01-23
NL7907894A (en) 1980-04-29
FR2439639B1 (en) 1983-04-29
CS216687B2 (en) 1982-11-26
PL132096B1 (en) 1985-01-31
WO1980000803A1 (en) 1980-05-01
FI61649B (en) 1982-05-31
FI61649C (en) 1982-09-10
SE7908702L (en) 1980-04-27
PL219241A1 (en) 1980-06-02
FI793336A (en) 1980-04-27
GB2034226A (en) 1980-06-04
FR2439639A1 (en) 1980-05-23
CH652054A5 (en) 1985-10-31
DK445879A (en) 1980-04-27
BR7906929A (en) 1980-06-24
ES251783Y (en) 1981-11-01
SU1369666A3 (en) 1988-01-23
NO151779C (en) 1985-06-05
HU179975B (en) 1983-01-28
NO151779B (en) 1985-02-25
DE2967396D1 (en) 1985-03-28
EP0020536A1 (en) 1981-01-07
DK153742B (en) 1988-08-29
ES251783U (en) 1981-05-01
AT374387B (en) 1984-04-10
ES251782Y (en) 1981-11-01
NO793403L (en) 1980-04-29
MX150474A (en) 1984-05-14
ES251782U (en) 1981-05-01
CA1120005A (en) 1982-03-16
RO79124A (en) 1982-06-25
ES485385A0 (en) 1981-04-16
EP0020536B1 (en) 1985-02-20
ES8104027A1 (en) 1981-04-16
SE441336B (en) 1985-09-30
BE879623A (en) 1980-02-15
ATA692379A (en) 1983-09-15
ATE11881T1 (en) 1985-03-15
IT1127798B (en) 1986-05-21
IT7984147A0 (en) 1979-10-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19961025