Nonhygroscopic welding powder and preparation method thereof

The invention discloses nonhygroscopic welding powder, and relates to the field of brazing. The nonhygroscopic welding powder consists of the following raw materials in parts by mass: 4 to 6 parts of boron powder, 5 to 7 parts of calcium fluoride, 13 to 15 parts of calcium oxide, 2 to 3 parts of sil...

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1. Verfasser: DENG LIUPING
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention discloses nonhygroscopic welding powder, and relates to the field of brazing. The nonhygroscopic welding powder consists of the following raw materials in parts by mass: 4 to 6 parts of boron powder, 5 to 7 parts of calcium fluoride, 13 to 15 parts of calcium oxide, 2 to 3 parts of silicon, 13 to 15 parts of copper oxide, 15 to 20 parts of nickle, 3 to 5 parts of nano-calcium oxide, 15 to 20 parts of polypropylene resin and 5 to 10 parts of sodium nitrate. By adopting the technical scheme of the invention, production cost is low, production efficiency is high, the produced welding powder is difficult to adsorb moisture and is long in storage time, a defect rate of a weldment can be reduced, meanwhile, the nonhygroscopic welding powder is convenient to operate, welding can be directly carried out after the welding powder is adhered by a welding rod, a welding effect is good, and welding performance and liquidity are improved. 本发明公开了种不吸潮焊粉,涉及钎焊领域,种不吸潮焊粉,由下列质量份数的原料组成:硼粉4-6份、氟化钙5-7份、氧化钙13-15份、硅2-3份、