| 如何确定光亮剂的好与差? |
| 添加时间：2018/11/26 16:19:11 浏览次数： |
| 1)观察外观。 1) observe the appearance. 好的柔软剂应该是无色透明的。而光亮剂则应是淡黄色透明状的，没有分层现象，无沉淀物，无悬浮物，色泽均匀一致。 Good softeners should be colorless and transparent. The brightener should be light yellow and transparent, no stratification, no sediment, no suspended matter, uniform color. 2)使用电流范围要宽。 2) The current range should be wide. 采用250mL霍尔槽测定使用电流范围。方法是分别采用总电流为0．5A、lA、2A。时间分别为lOmin、5min、2min打霍尔槽试片。三个试片均应该是整板镜面光亮为最好。 The current range was measured by 250 mL Hall cell. The total current is 0.5A, lA and 2A, respectively. The time was lOmin, 5 min and 2 min respectively. All three specimens should have the best overall mirror brightness. 3)稳定性要好。 3) stability is better. 光亮剂在镀液溶液中稳定，不易分解，从而减少了大处理的次数。第四代镀镍光亮剂的使用含量比第三代光亮剂少90％以上，有机物又十分稳定，大处理周期比第三代光亮剂要长3～4 倍。减少了处理时的原料损失。 The brightener is stable in the plating solution and is not easy to decompose, thus reducing the number of large treatments. The use content of the fourth generation brightener for nickel plating is less than 90% than that of the third generation brightener, and the organic matter is very stable. The treatment period of the fourth generation brightener is 3-4 times longer than that of the third generation brightener. The loss of raw materials during treatment is reduced. 4)光亮剂的使用范围要宽。 4) The use of brighteners should be wide. 使用范围过窄会给镀液维护带来很大困难。一般来说，因操作不当，误加一倍量的光亮剂不应出现低电流区发黑或漏镀现象。 It is difficult to maintain the plating solution if the application range is too narrow. Generally speaking, due to improper operation, the blackening or leakage of low current zone should not occur when the brightener is mistakenly doubled. 5)低区走位要好。 5) It is better to move in the low area. 即使是形状复杂的镀件，仍可在凹洼处镀上合格镍层，且没有明显色差为最好。 Even for complex plating parts, qualified nickel layer can be deposited in the depression, and no obvious color difference is the best. 6)整平性能好，出光快。 6) Good leveling performance and fast light output. 7)消耗量要少，能降低生产成本。 7) Consumption should be less and production cost can be reduced. 8)镀层应力要小，延展性能好。 8) The stress of the coating should be small and the ductility of the coating should be good. 除此之外，还要求光亮剂使用温度范围宽，抗杂质能力强，对镍离子含量广泛的适应能力等。 In addition, brighteners are required to have wide temperature range, strong resistance to impurities and wide adaptability to the content of nickel ions. |
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