| 配方类型： |
METALS AND THEIR TREATMENT |
| 配方说明： |
Solder Brightener |
| 配制方法： |
fluoboric acid gives better results than hydrochloric acid in this type of bright dip. Formula consists of 13 oz/gal each of 48% fluoboric acid solution and thiourea. Addition of a nonionic wetting agent improves the action of the bath, which is used at about 120-130'F, for 1-3 minutes. |
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