Method and device for preparation of superfine spherical metal powder on basis of uniform droplet spray method
A technology of droplet spraying and metal powder, which is applied in the field of spherical microparticle preparation, can solve the problems of poor spreadability, fluidity, and poor sphericity, and achieve the effect of controllable particle size, uniform size, and strong controllability
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[0041] Example 1
[0042] Specific implementation of batch preparation of Sn63-Pb37 spherical powder for 3D printing:
[0043] Crush the Sn63-Pb37 raw materials into small pieces, put them into crucible 3 after ultrasonic vibration, select the small hole diameter of nozzle 5 according to the requirements, such as preparing 25μm-50μm particles, choose 0.02mm-1.0mm diameter, such as Prepare particles of 50μm-100μm, choose the aperture of 1.0mm-2.0mm; Sn63-Pb37 raw materials put into the amount to reach 1 / 2-3 / 4 of crucible 1, such as figure 1 Shown
[0044] Use the mechanical pump 9 to pump the shell 12 and crucible 3 to a low vacuum of less than 5 Pa, and then use the diffusion pump 10 to pump the shell 12 and crucible 3 to a high vacuum of 0.001 Pa; use the crucible inlet pipe 1 and the cavity inlet pipe 15 to pass in Inert gas argon to make the pressure in the shell 12 and crucible 3 reach 0.1MPa;
[0045] Use the induction heater 13 to heat the crucible 3 at a heating temperature o...
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