DE876533C - Method and tool for the production of hollow bodies made of steel - Google Patents
Method and tool for the production of hollow bodies made of steelInfo
- Publication number
- DE876533C DE876533C DEK1904D DEK0001904D DE876533C DE 876533 C DE876533 C DE 876533C DE K1904 D DEK1904 D DE K1904D DE K0001904 D DEK0001904 D DE K0001904D DE 876533 C DE876533 C DE 876533C
- Authority
- DE
- Germany
- Prior art keywords
- production
- hollow bodies
- die
- steel
- tool
- 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
- B21C23/00—Extruding metal; Impact extrusion
- B21C23/02—Making uncoated products
- B21C23/20—Making uncoated products by backward extrusion
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Description
Nach einem bekannten Vorschlag -werden für die Herstellung von dünnwandigen Hohlkörpern aus Stahl mittels des an sich für Nichteisenmetalle bekannten Kaltspritzverfahrens als Vorwerkstücke -.napfartige Rohlinge benutzt, die durch Pressen oder Ziehen von aus Platten ausgestanzten Ronden hergestellt sind. ,Die mehr oder weniger verquetschte Schnittfläche derartiger Ronden muß vor oder nach der Herstellung des Napfes z. B. durch Abdrehen entfernt werden. Es entsteht also mit dem Ausstanzen der Ronden und dem Entfernen des Schnittgrates ein nicht geringer Werkstoffverlust. Dazu kommt die Arbeit .des Entfernens des Schnittgrates und die Notwendigkeit besonderer Einrichtungen. Um diesen Nachteilen zu begegnen, wurde vorgeschlagen, statt der Ronden von Stangen abgeschnittene Scheiben zu Näpfen kalt zu pressen, jedoch waren auch hierzu mehrere Arbeitsgänge, -insbesondere unter Benützung eines besonderen Gesenks nebst Preßstempel, notwendig: .Hierbei handelt es sich ferner um einen Werkstoff aus Messing oder einer anderen Metallegierung.According to a known proposal -being for the production of thin-walled Hollow bodies made of steel by means of the cold spray process known per se for non-ferrous metals Used as pre-workpieces - bowl-like blanks, which are produced by pressing or pulling round blanks punched out of plates are made. That more or less bruised Cut surface of such round blanks must be before or after the production of the cup z. B. can be removed by turning. It is created when the circular blanks are punched out and the removal of the burr, there is no small loss of material. In addition the work of removing the burr and the need for special facilities. In order to counter these disadvantages, it has been proposed to use rods instead of round blanks To cold-press cut slices into pans, but there were also several Operations, in particular using a special die with a press die, necessary: .This is also a material made of brass or a other metal alloy.
Es wurde nun gefunden, daß sich Hohlkörper auch ohne Benutzung riapfartiger Vorwerkstücke Uninittelbar aus Abschnitten von Stangen aus Stahl mittels Kaltspritzen herstellen lassen, indem ein Stahlstangenabschnitt in die Öffnung .eines mit einem- Boden versehenen Gesenks eingelegt, durch den Druck eines Stempels, der einen kleineren Durchmesser als die Gesenköffnung besitzt, derart beeinflußt wird, daß ein Verdrängen des Werkstoffs durch den Ringraum zwischen dem Stempel und der Gesenköffnung entgegen der Stempelbewegung erfolgt. Damit erhält man in einfachster Weise und in jeder Hinsicht in ihrer Werkstoffbeschaffenheit oder ihrem -gefüge einwandfreie Hohlkörper. Die Bedeutung.. des Kaltspritzens von Hohlkörpern unmittelbar aus Stangenabschnitten, also ohne Benutzung eines napfartigen Vorwerkstückes, läßt sich im- Vergleich zum Pressen, Ziehen oder Schmieden 'von- Stahlstangenabschnitten, was ohne Wärmebehandlung des Werkstückes schwerlich die geeignete Hohlkörperform erzielen läßt, als besonders praktisch, einfach und wirtschaftlich vorteilhaft ermessen, Unter Vermeidung irgendwelcher Zunderbildung- sind solche Hohlkörper ohne Abfall maßhaltig. An sich ist ein Gesenk mit Boden und einem die Preßöffnung mit einem Ringraum frei lassenden Preßstempel bekannt.It has now been found that hollow bodies become more riapf-like even without using them Pre-workpieces directly from sections of steel bars by means of cold spraying can be made by inserting a steel bar section into the opening. Bottom provided die inserted, by the pressure of a stamp, of a smaller one Diameter than the die opening is influenced so as to displace of the material through the annular space between the punch and the die opening the stamp movement takes place. With it one gets in the simplest way and in each Hollow bodies that are flawless in terms of their material properties or structure. The importance ... of cold spraying of hollow bodies directly from rod sections, So without using a bowl-like pre-workpiece, can be compared to Pressing, drawing or forging 'of steel bar sections without heat treatment the workpiece can hardly achieve the appropriate hollow body shape, as particularly practical, simple and economically advantageous, avoiding any Scale formation - such hollow bodies are dimensionally stable without waste. In itself is a die with a bottom and a press ram that leaves the press opening with an annular space free known.
Die Zeichnung veranschaulicht in Abb. z einen in ein Gesenk eingelegten Stangenabschnitt, der in Abb. 2 zu einem Hohlkörper kalt gespritzt ist. Das für die Herstellung eines Hohkörpers dienende Gesenk ist mit a und der Preßstempel mit b bezeichnet, c gilt für den Stangenabschnitt und für den Hohlkörper. Der Stangenabschnitt c ist in Abb. 2 durch den Stempel b entgegen dessen Bewegungsrichtung,'-wie mit Pfeilen angedeutet, unter Belassung eines mehr oder weniger dicken Bodens gespritzt worden.The drawing shows in Fig. Z a rod section inserted into a die, which in Fig. 2 is cold-injection molded to form a hollow body. The die used for the production of a hollow body is designated with a and the ram with b , c applies to the rod section and to the hollow body. The rod section c is injected in Fig. 2 by the punch b against its direction of movement, '- as indicated by arrows, leaving a more or less thick base.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK1904D DE876533C (en) | 1941-02-25 | 1941-02-25 | Method and tool for the production of hollow bodies made of steel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEK1904D DE876533C (en) | 1941-02-25 | 1941-02-25 | Method and tool for the production of hollow bodies made of steel |
Publications (1)
Publication Number | Publication Date |
---|---|
DE876533C true DE876533C (en) | 1953-05-15 |
Family
ID=7209135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEK1904D Expired DE876533C (en) | 1941-02-25 | 1941-02-25 | Method and tool for the production of hollow bodies made of steel |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE876533C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1022167B (en) * | 1954-04-07 | 1958-01-02 | Ver Deutsche Metallwerke Ag | Pressure atomizer can produced in the extrusion process |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE302432C (en) * | ||||
FR599780A (en) * | 1925-06-18 | 1926-01-20 | Process for drawing seamless tubes, round or profiled bars, wires and blades made of metals or alloys capable of being hot-molded | |
CH168788A (en) * | 1932-04-30 | 1934-04-30 | Ver Deutsche Metallwerke Ag | Compound die for pressing tubes and sleeves made of metal. |
AT139794B (en) * | 1933-09-30 | 1934-12-10 | Haut Rhin Manufacture Machines | Process for the production of cartridge cases and projectile jackets. |
DE645265C (en) * | 1937-05-24 | Haut Rhin Manufacture Machines | Process for the production of small bowls to be drawn out cold to form cartridge shells or bullet sleeves from rod sections by cold pressing | |
AT152688B (en) * | 1935-04-23 | 1938-03-10 | Dynamit Nobel Ag | Process for the production of shotgun shell cases. |
DE672815C (en) * | 1937-03-23 | 1939-03-10 | Ver Deutsche Metallwerke A G Z | Process for the production of hollow bodies with several thin walls |
-
1941
- 1941-02-25 DE DEK1904D patent/DE876533C/en not_active Expired
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE302432C (en) * | ||||
DE645265C (en) * | 1937-05-24 | Haut Rhin Manufacture Machines | Process for the production of small bowls to be drawn out cold to form cartridge shells or bullet sleeves from rod sections by cold pressing | |
FR599780A (en) * | 1925-06-18 | 1926-01-20 | Process for drawing seamless tubes, round or profiled bars, wires and blades made of metals or alloys capable of being hot-molded | |
CH168788A (en) * | 1932-04-30 | 1934-04-30 | Ver Deutsche Metallwerke Ag | Compound die for pressing tubes and sleeves made of metal. |
AT139794B (en) * | 1933-09-30 | 1934-12-10 | Haut Rhin Manufacture Machines | Process for the production of cartridge cases and projectile jackets. |
AT152688B (en) * | 1935-04-23 | 1938-03-10 | Dynamit Nobel Ag | Process for the production of shotgun shell cases. |
DE672815C (en) * | 1937-03-23 | 1939-03-10 | Ver Deutsche Metallwerke A G Z | Process for the production of hollow bodies with several thin walls |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1022167B (en) * | 1954-04-07 | 1958-01-02 | Ver Deutsche Metallwerke Ag | Pressure atomizer can produced in the extrusion process |
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