Every PVD coating manufacturer expects 100% good products after electroplating, but this is only an ideal situation. There is a saying that "the ambition is full, the reality is very backbone", which is also very suitable for the coating industry. Today we will talk about how the common bad forms of PVD coating processing are formed and how to solve them.
1: Flower collapse. When the goods are taken off the shelf, they accidentally touch the fixture. The distance between the goods is small, which affects each other. The goods collide with the goods, and the goods fall to the ground. There is also a special pearl situation, the goods are fighting in the furnace, the professional term is called "electric smashing", which means that the voltage and current in the vacuum furnace are too high, which will cause this situation to be shipped; the voltage and current in the furnace are affected by the product. Cleanliness, which requires employees to operate the product carefully, maintain the cleanliness of the product, and operate in strict accordance with the operating standards, then for this product that has formed a flower chip, it can only be decolorized and recharged, and then electroplated through polishing and repairing.
Two: Drop plating, which is the most taboo word in the PVD coating processing industry, spot film drop, mostly hanging ash, furnace ash falling on the product, after electroplating blowing off the dust, it will show spot drop film, just like this As long as the hanger is cleaned to ensure the cleanliness of the furnace, it can be avoided; if the block is lost, it means that the adhesion of the coating is not strong, the machine operation is wrong, or there is a problem with the electroplating parameters; if the electricity is not reached or the color is displayed, it is the joint of the product. There are impurities, not dried, and the impurities are out of gas during electroplating; for the belt joints are too tight, the joints are not electrified or painted, and the buckle is painted. This is a structural problem, and it can be said that it is processed by PVD coating. limitation.
Three: Hazy, the electroplating film is too thick, the particles of the tarnished film are large, and the film of the goods looks hazy. There are many reasons for this. For example, there are two types of changes in parameters in the furnace. The white fog inside the film is formed in the film, which cannot be treated by wiping. It can only be decolorized and recharged. Treatment by rubbing method. This requires adjusting the parameters in the furnace, reducing the evaporation rate, replacing the titanium block, and controlling the coating time.
