Alloy powder pulverizing device and application in preparation of copper-based solder

The invention discloses a powder making device for alloy powder. The powder making device comprises a turning crushing mechanism, a turning crushed material discharging mechanism, a rolling shear crushing mechanism and a material collecting mechanism. The turning crushing mechanism is used for carrying out coarse crushing on an alloy bar to obtain alloy coarse powder, and cooling liquid A flowing circularly is arranged during coarse crushing; the turning crushed material discharging mechanism is used for receiving alloy coarse powder and located between the turning crushing mechanism and the rolling shear crushing mechanism, the turning crushed material discharging mechanism is further connected with a recycling mechanism used for recycling cooling liquid A, and the rolling shear crushing mechanism is used for conducting fine crushing on the alloy coarse powder to obtain alloy powder; the material collecting mechanism is located below a discharging port of the box body of the rolling shear crushing mechanism