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本发明涉及关于在装有电极的液槽里进行金属坯件电泳涂搪的方法和装置。 已经存在这些方法和装置,即把带阴电的电极固定在隔开的阴极部位,并在它的上方,约高度1/3的地方开设一个供水排出的溢流口。 隔开的阴极部位内盛有弱的电解液。当阴极和阳极之间通上电流时,釉浆里的阳离子随着多余的水渗透到阴极处,从溢流口流走。因此,釉浆中瓷釉粒子的比例和釉浆的导电性就能得到控制。 这个装置的使用效果令人感到满意,但不足之处就是隔开阴极部位以及溢水装置的价格相对来说比较昂贵。此外,当过滤膜一损坏,电解液就从阴极处流到电泳槽里。 还有其它浸入电解液中使其渗透到隔开的阴极部位内而进行涂搪的方法和设备。 在另一已知涂搪装置中,透过过滤膜的液体,被唧简吸入并送入补助装置中,该液体和补充料拌匀后又重新加进电泳槽。从涂复的情况来看,这种回收稀释溶液的方法还是可行的。 电泳涂搪时,以水作为悬浮剂。另外,在电泳涂搪中,釉浆的导电性不断增加。釉浆导
The present invention relates to a method and apparatus for electrophoretic coating of metal blanks in a bath equipped with electrodes. These methods and devices already exist to hold the cathodoluminescent electrode at a spaced apart cathode portion and to provide an overflow outlet for water supply above it, approximately 1/3 of its height. Separated cathode site contains a weak electrolyte. When a current flows between the cathode and the anode, the cations in the glaze slurry flow from the overflow to the cathode as excess water penetrates. As a result, the proportion of enamel particles in the glaze and the conductivity of the glaze can be controlled. The use of this device is satisfactory, but the downside is that it is relatively expensive to separate the cathode and the overflow. In addition, when the filter membrane is damaged, the electrolyte flows from the cathode to the electrophoresis tank. There are other methods and apparatus for immersion in an electrolyte to allow it to penetrate into separate cathode sites for enamelling. In another known coating apparatus, the liquid that has passed through the filtration membrane is sucked into the assisting device and fed into the assisting device. After the liquid and the supplementary material are mixed, the liquid is reintroduced into the electrophoresis tank. From the coating situation, this method of recovering dilute solution is still feasible. Enamel coated enamel, water as a suspending agent. In addition, enamel coating in the bath, the conductivity of the glaze continues to increase. Glaze guide