Material increasing manufacturing method of pure tungsten metal
An additive manufacturing and metal technology, applied in the field of additive manufacturing of pure tungsten metal, can solve the problems of complex spreading/solidification behavior, difficulty in achieving complete densification, and no breakthrough in pure tungsten additive molding processes and methods. Improve molding density and component performance, and solve the effect of unstable droplet state
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Embodiment 1
[0061] 1) Screening and proportioning of tungsten powder particles
[0062] Take the spherical pure tungsten powder particles without impurities and oxygen adsorption on the surface, and screen out large particles of tungsten powder and small particles of tungsten powder. The maximum particle size is 2.1 μm, and the particle size ratio of small tungsten powder particles to large tungsten powder particles is 0.11.
[0063] Mix small tungsten powder particles with large tungsten powder particles to obtain a mixed powder. The mass of large tungsten powder particles accounts for 70% of the mass of the mixed powder, and the mass of small tungsten powder particles accounts for 30% of the mass of the mixed powder. , The bulk density of the mixed powder is 53%.
[0064] Add La and carbon black in mixed powder, the quality that adds La is 0.3% of mixed powder quality, the quality that adds carbon black is 0.3% of mixed powder quality,
[0065] 2) Laser forming and remelting
[0066]...
Embodiment 2
[0076] 1) Screening and proportioning of tungsten powder particles
[0077] Take the spherical pure tungsten powder particles without impurities and oxygen adsorption on the surface, and screen out large particles of tungsten powder and small particles of tungsten powder. The maximum particle size is 2.1 μm, and the particle size ratio of small tungsten powder particles to large tungsten powder particles is 0.11.
[0078] Mix small tungsten powder particles with large tungsten powder particles to obtain a mixed powder. The mass of large tungsten powder particles accounts for 70% of the mass of the mixed powder, and the mass of small tungsten powder particles accounts for 30% of the mass of the mixed powder. , The bulk density of the mixed powder is 53%.
[0079] Add La and carbon black in mixed powder, the quality that adds La is 0.3% of mixed powder quality, the quality that adds carbon black is 0.3% of mixed powder quality,
[0080] 2) Laser forming and remelting
[0081]...
Embodiment 3
[0091] 1) Screening and proportioning of tungsten powder particles
[0092] Take the spherical pure tungsten powder particles without impurities and oxygen adsorption on the surface, and screen out large particles of tungsten powder and small particles of tungsten powder. The maximum particle size is 2.1 μm, and the particle size ratio of small tungsten powder particles to large tungsten powder particles is 0.11.
[0093] Mix small tungsten powder particles with large tungsten powder particles to obtain a mixed powder. The mass of large tungsten powder particles accounts for 70% of the mass of the mixed powder, and the mass of small tungsten powder particles accounts for 30% of the mass of the mixed powder. , The bulk density of the mixed powder is 53%.
[0094] Add La and carbon black in mixed powder, the quality that adds La is 0.3% of mixed powder quality, the quality that adds carbon black is 0.3% of mixed powder quality,
[0095] 2) Laser forming and remelting
[0096]...
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