| 摘要 |
<p>A forming tool for a pressable material (2), particularly a high-pressure forming tool, has a die (1) surrounding a hollow working space, the die being surrounded by an armouring (5 to 10), which has a bandage (8) with a plurality of windings of a metal band. During operation, a pulsating electrical heating current (I1) is led through the material to be pressed, coaxially to the die (1). To prevent an excessive inductive heating of the armouring (5 to 10), particularly of the bandage (8), by the magnetic field of the heating current (I1), the invention provides that the windings of the bandage (8) are mutually electrically isolated, and that the magnetic field of the heating current (I1) is linked with at least one secondary current circuit (11), linked with the bandage (8), the electrical conductivity of the major part of the length of this circuit being at least equal to that of aluminium.</p> |
