Nothing less than to proceed from the following three points

Zinc alloy products inside polishing wax cause blistering how to improve it? Nothing less than to proceed from the following three points:
First, the cleaning agent: zinc alloy products require machining before polishing, polishing wax that in addition, there is the oil needs to be cleaned. We currently on the Molybdenum target in addition to wax water except oil ineffective; wax when the blind hole or hole, hole cleaning is not clean angular position. Obviously, zinc alloy wax degreasing cleaning agent selection problem, you should choose efficient, versatile, safe, environmentally friendly zinc alloy wax except oil cleaning agents, such as zinc alloy floating-cleaning wax except oil environmental cleaning agent, in order to thoroughly to remove residual wax and oil;Second, cleaning equipment: None according to the workpiece oil, wax, shape selected to match cleaning equipment and cleaning agents can not achieve synergies;Third, the cleaning process: no basis for zinc alloy material characteristics, the characteristics of the wax, cleaning agents and cleaning equipment optimization of process parameters settings.
From the above analysis we can see that only the cleaning agents, cleaning equipment, cleaning process and choose a suitable match to fully complete the workpiece surface includes blind hole or hole, the hole sharp bit clean. Only pre-treatment been done, then, zinc alloy products will result in blistering internal polishing wax improvement.crossed cut test with 30 ° sharp hard steel knife coating surface zoned zoned 2mm apart parallel lines cut through metal coating reaches the base metal. Crossed between the base metal coating shall not escape, or cross-zoned into lmm small box, not from the skin, shedding.
3 trial rasp rasp edges from the base about a 45 ° angle, file moving coating surface, the coating should not lift or fall off.
4 Thermal shock test The large specimens in a furnace heated to 300 ℃, heat lh, and then quenched in water, the coating may not blistering, peeling separation.
If silver device can withstand the test of the above three methods, indicating that the device is electroplated silver layer adhesion is quite reliable. Of course, there are other testing methods, mainly above four.