Electrophoretic paint is a type of coating product that can be applied to the coating of hardware components such as electromechanical, household appliances, and automobiles. Especially when used in the coating film, it can play a protective and anti-corrosion role. Below is an introduction to the precautions for pre-treatment electrophoresis process?

與一般溶劑型涂料和粉末涂料的前處理電泳相比本質(zhì)上是相同的，但基于電泳涂裝是一種特殊的水性涂料，其涂裝工藝是多種類型的組合.的物理和電化學(xué)反應(yīng)。因此，可以看出其產(chǎn)品表面處理的好壞，直接影響電泳涂裝后電泳漆膜的質(zhì)量和工件的使用壽命，因此應(yīng)予以高度重視。

Compared with the pre-treatment electrophoresis of general solvent based coatings and powder coatings, electrophoretic coating is essentially the same, but based on electrophoretic coating, it is a special water-based coating, and its coating process is a combination of various types of physical and electrochemical reactions. Therefore, it can be seen that the quality of the surface treatment of its products directly affects the quality of the electrophoretic coating film and the service life of the workpiece after electrophoretic coating, so it should be highly valued.

特別是其涂裝前的磷化膜符合相關(guān)質(zhì)量標(biāo)準(zhǔn)。前處理電泳還有一點(diǎn)很重要，它的處理膜薄、均勻、致密，無(wú)磷化殘留物或鐵粉粘附，無(wú)點(diǎn)痕跡。為保證被涂物表面電導(dǎo)率的均勻性，磷化膜不能太厚，通常為薄膜磷化。特別是本產(chǎn)品，在涂裝過(guò)程中被涂物表面會(huì)產(chǎn)生強(qiáng)烈的電化學(xué)反應(yīng)（如陰極電泳時(shí)涂裝界面呈強(qiáng)堿性等），前處理電泳得到的轉(zhuǎn)化膜應(yīng)具有很強(qiáng)的耐化學(xué)性。也就是說(shuō)，既要注意前處理轉(zhuǎn)化膜與電泳漆的相容性，也要注意轉(zhuǎn)化膜的成分。

Especially, the phosphating film before coating meets relevant quality standards. Another important aspect of pre-treatment electrophoresis is that its treatment film is thin, uniform, dense, without phosphate residue or iron powder adhesion, and without any trace. To ensure the uniformity of the surface conductivity of the coating, the phosphating film should not be too thick, usually thin film phosphating. Especially for this product, during the coating process, there will be strong electrochemical reactions on the surface of the coating material (such as strong alkaline coating interface during cathodic electrophoresis), and the conversion film obtained by pre-treatment electrophoresis should have strong chemical resistance. That is to say, attention should be paid to the compatibility between the pre-treatment conversion film and the electrophoretic paint, as well as to the composition of the conversion film.

前處理電泳應(yīng)清洗得更干凈，避免將雜質(zhì)離子和污物引入待涂物。電泳槽的油漆質(zhì)量，會(huì)影響槽液的穩(wěn)定性和穩(wěn)定性。或者可以不讓油漬、水溶性鹽類、不良導(dǎo)體附著在被涂物上；前處理用純水后洗滌后的滴水電導(dǎo)率應(yīng)小于30um/cm。另外，對(duì)耐腐蝕性要求高的產(chǎn)品應(yīng)采用鋅基磷化，甚至三重鋅基磷化。鋅基磷化需要表面凝固，用鈦鹽或其他物質(zhì)對(duì)工件表面進(jìn)行活化，此時(shí)其主要作用是增加磷化膜晶體的成核點(diǎn)，增加晶體密度，降低。粒度和重量，并改善磷酸鹽膜結(jié)構(gòu)。前處理電泳良好的表面調(diào)質(zhì)處理是形成良好磷化膜的重要保證。正常的磷化膜應(yīng)該是均勻、完整、致密的，前處理電泳要求是保證電泳前沒(méi)有黃銹！產(chǎn)品磷化后，電泳前還應(yīng)進(jìn)行清洗，用去離子水清洗。

The pre-treatment electrophoresis should be cleaned cleaner to avoid introducing impurities, ions, and dirt into the coating material. The paint quality of the electrophoresis tank will affect the stability and stability of the tank solution. Alternatively, it is possible to prevent oil stains, water-soluble salts, or defective conductors from adhering to the coated material; The conductivity of the dripping water after washing with pure water for pre-treatment should be less than 30um/cm. In addition, products with high requirements for corrosion resistance should use zinc based phosphating, or even triple zinc based phosphating. Zinc based phosphating requires surface solidification, and titanium salts or other substances are used to activate the surface of the workpiece. At this time, its main function is to increase the nucleation point of the phosphating film crystal, increase the crystal density, and reduce it. Particle size and weight, and improve the structure of phosphate film. A good surface conditioning treatment for pre-treatment electrophoresis is an important guarantee for the formation of a good phosphating film. The normal phosphating film should be uniform, complete, and dense, and the requirement for pre-treatment electrophoresis is to ensure that there is no yellow rust before electrophoresis! After phosphating, the product should also be cleaned with deionized water before electrophoresis.

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