The invention discloses an electromagnetically-induced three-dimensional
heating system for
selective laser melting. The electromagnetically-induced three-dimensional
heating system comprises a forming chamber, wherein a
laser transmitter is arranged at the top of the forming chamber, a forming working platform is arranged at the bottom of the forming chamber, the forming working platform is cooperated with an inner body of a forming cylinder, a coil is arranged between the inner body of the forming cylinder and an outer body of the forming cylinder, the forming working platform is arranged in the coil, the coil is connected with an
electromagnetic induction heating control cabinet, and the
electromagnetic induction heating control cabinet is connected with a central controller; a
graphite block is arranged between the inner body of the forming cylinder and the coil, a temperature sensor used for monitoring a temperature of the
graphite block in real time is installed on the
graphite block, and the temperature sensor is connected with the central controller; and an
infrared thermometer used for monitoring temperatures of the machined parts in real time is installed in the forming chamber, and the
infrared thermometer is connected with the central controller. The electromagnetically-induced three-dimensional
heating system disclosed by the invention is used for uniformly heating the machined parts and a
machining planar area, thus reducing the interlayer temperature gradients of cooling solidification and
machining of an SLM
metal molten pool, and reducing residual stresses in the
metal parts; and online annealing can be realized.