银钎剂水溶法改性制备工艺的优化

Optimization of water dissolution modification process using silver brazing fluxes

摘要: 针对银钎剂生产成本较高、性能不够稳定以至难以大批量生产的现状,通过在银钎剂的水溶法改性工艺的基础上,采用正交试验法对其工艺及配方进行了优化设计。正交试验表明,烘干时间对钎剂性能的影响最为显著,其次是成分配比,再次是烘干温度。水溶法改性最佳方案是,钎剂配比为42%KF+23%KBF₄+35%B₂O₃,烘干时间为45 min,烘干温度为350℃。实施了优选的工艺其操作方便、生产成本低、产品质量稳定。

Abstract: The optimization of the water dissolution process using silver brazing fluxes was conducted by orthogonal test. The test result showed that effect of bake time on flux property is the best notable, next proportioning of compositions affected flux property, then bake temperature affected flux property. The optimum process parameters are component of 42%KF+23%KBF₄+35%B₂O₃, bake time of 45 min and bake temperature of 350℃. By using the silver brazing fluxes, the best results of the jointing can be carried out.