DE1083208B - Process for the production of a metal pipe drilled several times - Google Patents

Process for the production of a metal pipe drilled several times

Info

Publication number
DE1083208B
DE1083208B DET16591A DET0016591A DE1083208B DE 1083208 B DE1083208 B DE 1083208B DE T16591 A DET16591 A DE T16591A DE T0016591 A DET0016591 A DE T0016591A DE 1083208 B DE1083208 B DE 1083208B
Authority
DE
Germany
Prior art keywords
production
metal pipe
several times
cores
billet
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.)
Pending
Application number
DET16591A
Other languages
German (de)
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.)
TI Group Services Ltd
Original Assignee
TI Group Services 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 TI Group Services Ltd filed Critical TI Group Services Ltd
Publication of DE1083208B publication Critical patent/DE1083208B/en
Pending 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
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • 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
    • B21C23/01—Extruding metal; Impact extrusion starting from material of particular form or shape, e.g. mechanically pre-treated

Description

DEUTSCHESGERMAN

In dem deutschen Patent 884 933 ist eine Erfindung beschrieben, die ein Verfahren zur Herstellung von Metallrohren betrifft. Nach diesem Verfahren wird ein mit einem austenitischen Kern vereinigter hohler Knüppel gestreckt und durch Ausstoß auf dem ge forderten Durchmesser reduziert, wobei der Kern nachfolgend entfernt wird.In the German patent 884 933 an invention is described, which is a method for the production of Metal pipes concerns. According to this process, a hollow core is combined with an austenitic core Billet stretched and reduced to the required diameter by ejection, with the core is subsequently removed.

Die Erfindung bezieht sich auf ein Verfahren zur Erzeugung eines Rohres mit einer Vielzahl von Längsbohrungen, und die Erfindung besteht in einer Abwandlung des Verfahrens, welches den Gegenstand des vorgenannten Patentes bildet, worin der Knüppel zwei oder mehr in sich gebildete Bohrungen hat und ein austenitischer Kern in jeder Bohrung enthalten ist, wobei der mit den Kernen vereinigte Knüppel gestreckt und durch Ausstoß reduziert wird und die -Kerne nachfolgend entfernt werden.The invention relates to a method for producing a tube with a plurality of Longitudinal bores, and the invention consists in a modification of the method which the object of the aforementioned patent forms, wherein the billet has two or more bores formed in it and an austenitic core is contained in each bore, with the billet associated with the cores being elongated and is reduced by output and the cores are subsequently removed.

Zur Ausführung der Erfindung hat ein Knüppel angemessener Größe in sich gebildet zwei oder mehr Längsbohrungen, und in jede Bohrung ist ein austenitischer Kern eingesetzt. Der Knüppel kann kreisförmigen, elliptischen, rechtwinkligen oder anderen Querschnitt haben, und die Bohrungen können in dem Knüppel in irgendwelchen gewünschten relativen Stellungen gebildet sein. Die Löcher können durch Bohren gebildet oder der Knüppel kann rund um die Kerne herumgegossen sein. Wahlweise kann ein mehrfach gebohrter Knüppel ursprünglich durch Ausstoß gebildet sein, wobei die Kerne nachfolgend in die Bohrungen des Knüppels eingesetzt sind.For carrying out the invention, a billet of reasonable size has formed in itself two or more Longitudinal bores, and an austenitic core is inserted into each bore. The stick can be circular, elliptical, rectangular or other cross-section, and the holes can be in the Sticks can be formed in any desired relative positions. The holes can go through Drilling formed or the billet can be cast around the cores. Optionally, a multiple drilled billets originally formed by ejection, with the cores subsequently in the bores of the stick are inserted.

Der mit den Kernen vereinigte Knüppel wird dann in eine Ausstoßpresse gesetzt und (entweder in erhitztem oder kaltem Zustand) durch eine Matrize getrieben, die der äußeren Größe und Gestalt des geforderten Rohres entspricht. Schließlich werden kurze Enden der Kerne durch Entfernung des umgebenden Metalls freigelegt, und eine Zugkraft wird auf die Kerne ausgeübt, um eine genügende Durchmesserverminderung zu bewirken, damit die Kerne ausgezogen werden können.The billet combined with the cores is then placed in an ejector press and (either in heated or cold state) driven through a die corresponding to the external size and shape of the required Rohres corresponds. Eventually short ends of the kernels are made by removing the surrounding ones Metal is exposed and a tensile force is applied to the cores to reduce the diameter sufficiently to cause the cores to be pulled out.

Die Erfindung ist insbesondere zur Herstellung von Rohren aus harten Metallen, z. B. Chrom-Nickel-Verfahren zur Herstellung
eines mehrfach gebohrten MetallrohresThe invention is particularly useful for making pipes from hard metals, e.g. B. Chromium-nickel manufacturing process
a metal tube drilled several times

Zusatz zum Patent 884 933Addendum to patent 884,933

Anmelder:Applicant:

T. I. (Group Services) Limited,
Birmingham (Großbritannien)TI (Group Services) Limited,
Birmingham (Great Britain)

Vertreter: Dipl.-Ing. H. Leinweber, Patentanwalt,
München 2, Rosental 7Representative: Dipl.-Ing. H. Leinweber, patent attorney,
Munich 2, Rosental 7

Beanspruchte Priorität:
Großbritannien vom 22. Juli 1958Claimed priority:
Great Britain July 22, 1958

Stahl, bestimmt, aber sie ist auch für die Erzeugung von vielfach gebohrten Rohren aus irgendeinem Metall anwendbar.Steel, sure, but it's also used to make multi-drilled tubes from any metal applicable.

Claims (1)

Patentanspruch:Claim: Verfahren zur Bildung eines mehrfach gebohrten Rohres als Abwandlung des Verfahrens zur Herstellung eines Metallrohres nachPatent 884933, dadurch gekennzeichnet, daß bei einem Knüppel, der in sich gebildet eine Vielzahl von Längsbohrungen aufweist und in jeder Bohrung einen austenitischen Kern enthält, dieser mit den Kernen vereinigte Knüppel durch Ausstoßen oder Auspressen im Durchmesser reduziert wird und die Kerne nachfolgend entfernt werden.Method for forming a multiple-drilled pipe as a modification of the method for Production of a metal pipe according to patent 884933, characterized in that in the case of a billet, which is formed in itself, a plurality of longitudinal bores and contains an austenitic core in each bore, this with the cores united billet is reduced in diameter by ejection or extrusion and the Cores are subsequently removed.
DET16591A 1958-07-22 1959-04-24 Process for the production of a metal pipe drilled several times Pending DE1083208B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1083208X 1958-07-22

Publications (1)

Publication Number Publication Date
DE1083208B true DE1083208B (en) 1960-06-15

Family

ID=10872772

Family Applications (1)

Application Number Title Priority Date Filing Date
DET16591A Pending DE1083208B (en) 1958-07-22 1959-04-24 Process for the production of a metal pipe drilled several times

Country Status (1)

Country Link
DE (1) DE1083208B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2402497A1 (en) * 1977-09-12 1979-04-06 Kabel Metallwerke Ghh Mfr. of long conductor with asymmetric longitudinal holes - uses progressive refining, drawing or rolling interposed by hole drilling

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2402497A1 (en) * 1977-09-12 1979-04-06 Kabel Metallwerke Ghh Mfr. of long conductor with asymmetric longitudinal holes - uses progressive refining, drawing or rolling interposed by hole drilling

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