The invention relates to the technical field of
porous metal material and 3D printing, in particular to a
powder removal method of a 3DP printed thin-walled
porous metal blank. The method comprises the following steps of firstly, selecting
metal powder required for molding, spraying a bonding agent to the
metal powder and manufacturing a printing blank through the 3DP method; secondly, putting theprinting blank to be subjected to powder removal in a
drying box to be heated for 1-2 h and then putting the printing blank into an ultrasonic cleaning
machine containing an
anhydrous ethanol solution to conduct ultrasonic powder removal; and thirdly, putting the printing blank subjected to powder removal into the
drying box again to conduct heating treatment and then obtain the thin-walled
porous metal blank with the
structural integrity. Through the powder removal method, the powder of the porous printing blank with the low strength can be removed. The powder removal method has the characteristics that powder removal operation is easy, the cost is low, and the method is energy-saving and environment-friendly. The method can be adopted to conduct powder removal on 3DP printed thin-walledporous
metal blanks in batch, can achieve the powder removal
mechanization and provides a guarantee for
mass production of 3DP parts.