The invention relates to a
selective laser melting forming
molten bath real-time monitoring device and a monitoring method, and belongs to the technical field of 3D printing additive manufacturing. The
selective laser melting forming
molten bath real-time monitoring device and the monitoring method can monitor the
molten bath temperature, the shape and the area in the SLM forming process in real time, conduct online assessment on the forming precision and the
laser power and feed back the result. According to the adopted technical scheme, a melting forming
laser system and a
pulsed laser are arranged on the top of a forming cavity, a piece of transparent glass is arranged in the center of the top of the forming cavity, a
laser lens tube is arranged above the transparent glass, and the
pulsed laser is connected with the laser lens tube through an
optical fiber. A lifting frame is arranged in the forming cavity, lifting mechanisms are arranged on the two sides of the lifting frame, and cameras are arranged at the bottom of the lifting frame in the mode of different angles. The melting forming laser
system, the
pulsed laser, the lifting mechanisms and the cameras are connected with a master
control system. The
selective laser melting forming molten bath real-time monitoring device and the monitoring method are widely used for real-time monitoring of a selective laser melting forming molten bath.