DE560343C - Process for the extrusion of blocks consisting of several layers - Google Patents
Process for the extrusion of blocks consisting of several layersInfo
- Publication number
- DE560343C DE560343C DEM115011D DEM0115011D DE560343C DE 560343 C DE560343 C DE 560343C DE M115011 D DEM115011 D DE M115011D DE M0115011 D DEM0115011 D DE M0115011D DE 560343 C DE560343 C DE 560343C
- Authority
- DE
- Germany
- Prior art keywords
- iron
- block
- core
- extrusion
- several layers
- 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
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
- B21C33/00—Feeding extrusion presses with metal to be extruded ; Loading the dummy block
- B21C33/004—Composite billet
-
- 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
- B21C23/22—Making metal-coated products; Making products from two or more metals
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Description
Verfahren zum Strangpressen von aus mehreren Schichten bestehenden Blöcken Die Erfindung betrifft ein Verfahren zum Strangpressen von erhitzten, aus mehreren Schichten bestehenden Voll- 'oder Hohlblökken. Erfindungsgemäß besteht der Kern aus Eisen oder einer Eisenlegierung und der äußere und/oder innere Überzug des Blockes aus einer anderen Eisenart oder Eisenlegierung oder aus einer Legierung sonstiger Metalle von annähernd der Preßtemperatur des Eisens.Method of extrusion of layers consisting of several layers Blocks The invention relates to a method for the extrusion of heated, from solid or hollow blocks consisting of several layers. According to the invention there is the core made of iron or an iron alloy and the outer and / or inner coating the block made of another type of iron or iron alloy or of an alloy other metals at approximately the pressing temperature of iron.
Das Pressen von Eisenrohren ist an sich bekannt.The pressing of iron pipes is known per se.
Weiterhin ist bekannt, Rohre, Stäbe u. dgl., die aus mehreren Schichten bestehen, kalt in der Weise zu pressen, daß ein aus einem Kernmetall und einem festhaftenden Überzug der Umhüllungsmetalle gebildeter Preßblock in einer Strangpresse zu den angegebenen Gegenständen gepreßt wird.It is also known that pipes, rods and the like, which consist of several layers consist of cold pressing in such a way that one consists of a core metal and a firmly adhering metal Coating of the cladding metals formed press block in an extrusion press to the specified objects is pressed.
Als Kaltverfahren eignet sich dieses Verfahren nur für verhältnismäßig weiche, leidht verformbare Metalle, wie Kupfer, Zinn, Blei USW. As a cold process, this process is only suitable for relatively soft, poorly deformable metals such as copper, tin, lead, etc.
Es ist weiterhin vorgeschlagen worden, Metallstangen oder Rohre unter gleichzeitigem Aufbringen eines Mantels aus einem anderen Metall in der Weise warm zu pressen, daß beide Metalle roh vorgeformt in den Aufnehmer der Presse eingebracht werden, wobei das außenliegende Metall als konischer Ring den in der Preßrichtung vorderen Teil des Kernmetalls in sich aufnimmt, während die Hauptmasse des Kernmetalls hinter dem Mantelmetall liegt. Versuche haben jedoch ergeben, daß dieses in neuerer Zeit für Metall angewendete Verfahren sich für Eisen mit einem überzug aus einer anderen Eisenart oder Eisenlegierung oder aus einer Legierung sonstiger Metalle von annähernd gleicher Preßtemperatur nicht eignet, da ein festhaftender, gleichmäßiger Überzug auf diese Weise bei Eisen nicht erhalten werden .kann.It has also been suggested to use metal rods or tubes underneath simultaneous application of a jacket made of another metal in the way warm to press that both metals are introduced into the receiver of the press in a raw, preformed state are, the outer metal as a conical ring in the pressing direction front part of the core metal takes up, while the main mass of the core metal lies behind the jacket metal. However, tests have shown that this is more recent Time for metal processes used for iron with a coating of a another type of iron or iron alloy or an alloy of other metals of approximately the same pressing temperature is not suitable, since a firmly adhering, more uniform Coating in this way cannot be obtained with iron.
Bisher sind Eisenrohre oder Stahlrohre, die dünnwandige Überzüge aus insbesondere nicht oxydierenden, korrosions- und hitzebeständigem Material aufweisen, auf verschiedene Weise hergestellt worden, entweder durch Vernickeln, Verchromen o. dgl., oder indem man gesondert hergestellte Rohre aus korrosionsbeständigem Material auf Eisenrohre aufzog bzw. in die Bohrung einzog, schließlich auch durch Plattieren. Alle bekannten Verfahren sind kostspielig.So far, iron pipes or steel pipes are made of thin-walled coatings in particular have non-oxidizing, corrosion- and heat-resistant material, manufactured in various ways, either by nickel plating or chrome plating o. The like., Or by separately manufactured pipes made of corrosion-resistant material pulled onto iron pipes or pulled into the bore, finally also by plating. All known methods are costly.
Auf der Zeichnung sind in mehreren Abbildungen verschiedene Arbeitsstufen des neuen Verfahrens zur Herstellung von überzogenen Rohren dargestellt.Various work stages are shown in several illustrations on the drawing of the new process for the production of coated pipes.
Abb. i a bis i c zeigen das Vorprodukt und das fertige, mit Außenüberzug versehene Rohr. Das Vorprodukt besteht aus einem massiven Block k, der mit einem Mantel in umgeben ist, welcher vorzugsweise, um eine Verschiebung zwischen Block und Mantel vor oder während des Pressens zu verhindern, um den Block umgebördelt ist. Diese .Sicherung kann naturgemäß auch auf andere Art erfolgen. Abb.2a bis 2c zeigen die entsprechende Gestaltung von Vor- und Fertigprodukt eines innen überzogenen Rohrs. Das Vorprodukt besteht aus dem Hohlblock h und dem inneren Mantel oder der Seele s. Die Enden der Seele sind umgebördelt.Fig. Ia to ic show the preliminary product and the finished pipe with an external coating. The preliminary product consists of a solid block k which is surrounded by a jacket in which is preferably flanged around the block in order to prevent displacement between the block and the jacket before or during the pressing. This .Sicherung can of course also take place in other ways. Figures 2a to 2c show the corresponding design of the preliminary and finished product of an internally coated pipe. The preliminary product consists of the hollow block h and the inner jacket or core s. The ends of the core are flanged.
Abb. 3a bis 3c zeigen ein Rohr, das außen und innen mit einem Überzug versehen ist. Diese Überzüge können verschiedenartig sein, sofern die Preßtemperatur annähernd die gleiche ist.Fig. 3a to 3c show a tube that is covered on the outside and inside is provided. These coatings can be of various types, provided that the pressing temperature is approximately the same.
Die Stärke der Überzüge kann beliebig, z. B. 0,2 bis o,3 mm, gewählt werden.The thickness of the coatings can be arbitrary, e.g. B. 0.2 to 0.3 mm selected will.
Will man dünnwandige Röhren aus Eisen und Eisenlegierungen kleineren Kalibers pressen, so hat man in der Presse besondere Schwierigkeiten mit dem Lochdorn, weil der kleine Durchmesser des Dorns diesem nicht die genügende Festigkeit gibt. In diesem Falle wird eine ummantelte Stange aus einem ummantelten Werkblock hergestellt. Der innere Block dient also als Dorn. Nach dem Erkalten wird das überzugsrohr von der Stange gelöst und abgezogen, so daß beide Teile für sich verwendet werden können. Zweckmäßig wird zwischen Mantel und Werkblock eine Isolierung, z. B. Oxydschicht, Aluminiumbronze usw., vorgesehen, um das spätere Lösen zu erleichtern.If you want thin-walled tubes made of iron and iron alloys smaller ones Caliber, you have particular difficulties in the press with the piercer, because the small diameter of the mandrel does not give it sufficient strength. In this case, a sheathed bar is made from a sheathed work block. So the inner block serves as a mandrel. After cooling down, the cover tube is removed from the rod loosened and pulled off so that both parts can be used separately. It is advisable to use insulation between the jacket and the work block, e.g. B. Oxide layer, Aluminum bronze, etc., provided to facilitate later loosening.
Das erfindungsgemäße Verfahren kann auch Anwendung finden, um Rohre als Schutzmantel um Stangen zu legen, indem der Mantel auf einen massiven Kernblock aufgeschoben und das Ganze ohne Dorn wie auf einer Strangpresse ausgepreßt wird. Die Abh. ¢a bis qc zeigen das entsprechende Vor- bzw. Fertigprodukt.The method according to the invention can also be used for pipes to put as a protective sheath around poles by placing the sheath on a solid core block postponed and the whole thing is pressed out without a mandrel like on an extrusion press. The dependencies ¢ a to qc show the corresponding preliminary or finished product.
Will man besonders festhaftende Überzüge auf .Stangen oder Röhren erzielen, so empfiehlt es sich, die Berührungsfläche von Mantel und Werkblock metallisch rein auszuführen.If you want particularly adhesive coatings on rods or tubes achieve, it is recommended that the contact surface of the jacket and the work block be metallic pure to run.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM115011D DE560343C (en) | 1931-04-21 | 1931-04-21 | Process for the extrusion of blocks consisting of several layers |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEM115011D DE560343C (en) | 1931-04-21 | 1931-04-21 | Process for the extrusion of blocks consisting of several layers |
Publications (1)
Publication Number | Publication Date |
---|---|
DE560343C true DE560343C (en) | 1932-10-01 |
Family
ID=7328182
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEM115011D Expired DE560343C (en) | 1931-04-21 | 1931-04-21 | Process for the extrusion of blocks consisting of several layers |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE560343C (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE748153C (en) * | 1939-02-28 | 1944-10-27 | Method and device for the production of tubular bodies clad with light metal or light metal alloys, in particular bearing or sliding bushes | |
DE753279C (en) * | 1935-11-12 | 1952-12-01 | Ver Deutsche Metallwerke Ag | Process for plating solid or hollow profiles, whose core metal is iron and whose cover metal is a non-ferrous metal, e.g. B. is copper |
DE1014063B (en) * | 1952-10-01 | 1957-08-22 | Comptoir Ind Etirage | Hot pressing process for the production of multilayer metal rods or pipes |
DE1027488B (en) * | 1952-10-31 | 1958-04-03 | Teves Kg Alfred | Method of manufacturing hollow poppet valves for internal combustion engines |
DE1041329B (en) * | 1953-12-04 | 1958-10-16 | Mond Nickel Co Ltd | Filler to be introduced into bores of workpieces for deformation |
DE1055332B (en) * | 1954-04-29 | 1959-04-16 | Wiggin & Co Ltd Henry | Process for the manufacture of metallic workpieces, e.g. B. turbine blades, with longitudinal ducts |
DE1078520B (en) * | 1956-04-25 | 1960-03-31 | Comptoir Ind Etirage | Process for lubrication during hot extrusion of metals or metal alloys that are difficult to compress |
DE1081404B (en) * | 1956-03-28 | 1960-05-12 | Comptoir Ind Etirage | Process for the production of thin-walled metal pipes by hot extrusion |
US4162758A (en) * | 1976-07-26 | 1979-07-31 | Asahi Kasei Kogyo Kabushiki-Kaisha | Method for producing clad steel pipes |
EP2325446A1 (en) | 2008-09-18 | 2011-05-25 | Mitsubishi Heavy Industries, Ltd. | Method of manufacturing umbrella portion of hollow engine valve, and hollow engine valve |
-
1931
- 1931-04-21 DE DEM115011D patent/DE560343C/en not_active Expired
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE753279C (en) * | 1935-11-12 | 1952-12-01 | Ver Deutsche Metallwerke Ag | Process for plating solid or hollow profiles, whose core metal is iron and whose cover metal is a non-ferrous metal, e.g. B. is copper |
DE748153C (en) * | 1939-02-28 | 1944-10-27 | Method and device for the production of tubular bodies clad with light metal or light metal alloys, in particular bearing or sliding bushes | |
DE1014063B (en) * | 1952-10-01 | 1957-08-22 | Comptoir Ind Etirage | Hot pressing process for the production of multilayer metal rods or pipes |
DE1027488B (en) * | 1952-10-31 | 1958-04-03 | Teves Kg Alfred | Method of manufacturing hollow poppet valves for internal combustion engines |
DE1041329B (en) * | 1953-12-04 | 1958-10-16 | Mond Nickel Co Ltd | Filler to be introduced into bores of workpieces for deformation |
DE1055332B (en) * | 1954-04-29 | 1959-04-16 | Wiggin & Co Ltd Henry | Process for the manufacture of metallic workpieces, e.g. B. turbine blades, with longitudinal ducts |
DE1081404B (en) * | 1956-03-28 | 1960-05-12 | Comptoir Ind Etirage | Process for the production of thin-walled metal pipes by hot extrusion |
DE1078520B (en) * | 1956-04-25 | 1960-03-31 | Comptoir Ind Etirage | Process for lubrication during hot extrusion of metals or metal alloys that are difficult to compress |
US4162758A (en) * | 1976-07-26 | 1979-07-31 | Asahi Kasei Kogyo Kabushiki-Kaisha | Method for producing clad steel pipes |
EP2325446A1 (en) | 2008-09-18 | 2011-05-25 | Mitsubishi Heavy Industries, Ltd. | Method of manufacturing umbrella portion of hollow engine valve, and hollow engine valve |
US8522434B2 (en) | 2008-09-18 | 2013-09-03 | Mitsubishi Heavy Industries, Ltd. | Method for production of valve head portion of hollow engine valve and hollow engine valve |
US9194263B2 (en) | 2008-09-18 | 2015-11-24 | Mitsubishi Heavy Industries, Ltd. | Method for production of valve head portion of hollow engine valve and hollow engine valve |
US9447711B2 (en) | 2008-09-18 | 2016-09-20 | Fuji Hollow Valve Inc. | Method for production of valve head portion of hollow engine valve and hollow engine valve |
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