为什么锌合金电镀会起泡（Why do zinc alloy plating blister）.docVIP

为什么锌合金电镀会起泡（Why do zinc alloy plating blister） There are three possible: First: special substrates, Second: the pretreatment of hydrogen evolution seriously (using the cathode electrolytic pickling, high concentration), Third, into the bath before the surface of the workpiece is film (high pickling impurity), Fourth: bath with organic substances, impurities How out of the oven and zinc alloy panel 2 is foaming electroplating which is a problem One may be uneven. The oven temperature lead zinc alloy panel 2 is foaming, the temperature is too high. Two. Before the treatment process should be gentle a little better, because when the zinc alloy die-casting machine head panel 2 is not close to the two zinc alloy in trachoma easily into acid, acid and zinc in the coating on the surface of the case even if there is still a chemical reaction will occur, resulting in a large number of hydrogen gas inside the m when pressure higher than atmospheric pressure at certain degree plus high temperature will produce bubbles. Three, test base copper cylinder components, to see whether the change low or high sodium hydroxide! Such as adding brightener agent carefully light high. The general problem is electroplating, copper hit bottom is too thin, the plating bath for acidic copper bottom reaction to produce hydrogen bubbles through the zinc alloy, was not very serious, more serious after heating Why Aluminum Alloy and zinc alloy die-casting products after plating, after one or two months storage will be black or frothy? Thank you! No good plating, initial coating and matrix with no good, here is the pretreatment, zinc dipping, activation link is not ready Why is better than the performance of zinc alloy plating Aluminum Alloy I do the processing industry, to find a lot of die-casting manufacturers and manufacturers have said electroplating zinc alloy plating performance is better than Aluminum Alloy, non-performing rate will be much lower. Who knows why! The best can provide some the