Extrusion process for producing seamless hollow body with one closed end, involving forming closed end of hollow block when holing it, displacing material from edge towards center

The extrusion process involves producing the hollow body from a hollow block (1'), using a die, a plain mandrel (2), a holing mandrel (17) and a drawing ring (7) to reduce it to the final diameters. When the holing mandrel is used on the block, a closed end (6) is formed, the material of which...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SCHMITZ, THEODOR, BOROWIKOW, ALEXANDER, NICKEL, WILHELM, BLEI, HOLGER, SCHLUESSEL, HANS-JUERGEN
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL FORGE FURNACES FORGING HAMMERING MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES,RIVETS, BOLTS OR WHEELS MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PRESSING METAL PUNCHING METAL RIVETING ROLLING OF METAL TRANSPORTING
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