CPC B22F 3/24 (2013.01) [B22F 10/64 (2021.01); B33Y 40/20 (2020.01); C21D 1/18 (2013.01); C21D 6/04 (2013.01); C22F 1/002 (2013.01)] | 15 Claims |
1. A method for after-treating a metallic workpiece produced by means of additive manufacturing, wherein the workpiece is, after it has been manufactured, subjected to a cold treatment in which the workpiece is cooled in a cooling phase to a lower target temperature of below −30° C., held at the lower target temperature during a hold phase, and subsequently warmed in a warming phase to an upper target temperature;
wherein the cooling phase or the hold phase is interrupted by a first intermediate warming phase in which the workpiece is warmed to a first intermediate temperature and subsequently cooled;
wherein the cooling phase or the hold phase is interrupted by a second intermediate warming phase in which the workpiece is warmed to a second intermediate temperature and subsequently cooled, wherein the second intermediate temperature is different than the first intermediate temperature; and
wherein the cooling phase is interrupted by the first intermediate warming phase and the hold phase is interrupted by the second intermediate warming phase.
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