Device and method for the plastic forming of a workpiece made of metal or a metal alloy by means of ecap

Abstract

A device for the plastic forming of a workpiece made of metal or a metal alloy by ECAP is described. The device comprises more than two channels, wherein an inlet channel and an outlet channel are provided, wherein these channels indirectly connect to one another and are arranged approximately perpendicularly to one another. Furthermore, a method for the plastic forming of a workpiece made of metal or a metal alloy ECAP is described. The workpiece is pressed once or multiple limes through a device having more than two channels, wherein the workpiece is plastically formed by a single or multiple pressing through an inlet channel and an outlet channel which indirectly connects to the inlet channel and is arranged approximately perpendicularly thereto.

1 . A device for the plastic forming of a workpiece made of metal or a metal alloy by means of ECAP, which device comprises more than two channels, characterized in that an inlet channel and an outlet channel are provided, wherein these channels indirectly connect to one another and are arranged approximately perpendicularly to one another. 
     
     
         2 . The device according to  claim 1 , characterized in that at least one additional channel is provided, wherein the inlet channel and the outlet channel are connected to one another by the at least one additional channel. 
     
     
         3 . The device according to  claim 1 , characterized in that each two channels are arranged relative to one another such that they form a forming bend. 
     
     
         4 . The device according to  claim 1 , characterized in that a heating apparatus is provided. 
     
     
         5 . A method for the plastic forming of a workpiece made of metal or a metal alloy by ECAP, wherein the workpiece is pressed once or multiple times through a device having more than two channels, in particular through a device according to  claim 1 , characterized in that the workpiece is plastically formed by a single or multiple pressing through an inlet channel and an outlet channel which indirectly connects to the inlet channel and is arranged approximately perpendicularly thereto. 
     
     
         6 . The method according to  claim 5 , characterized in that, before each introduction into the inlet channel, the workpiece is rotated about a longitudinal axis of the same. 
     
     
         7 . The method according to  claim 5 , characterized in that the workpiece is formed at least twice each time it is pressed through the device. 
     
     
         8 . The method according to  claim 5 , characterized in that the workpiece is pressed through multiple channels, wherein a forming bend is provided between each two channels. 
     
     
         9 . The method according to  claim 5 , characterized in that the workpiece is heated, wherein a temperature is lowered each time the workpiece is pressed through the device.