Before plating need to pay attention to what issues?
Stainless steel surface has a very thin layer of transparent passivation membrane, made of stainless steel not only not rust in the air, and can withstand a lot of strong corrosive medium without etching. This layer even if damaged in air or water, can still bare new surface passivation membrane after damage and repair. Before plating on the surface, if mishandled, it is hard to get good coating binding force.Plating after cold, hot water washing is important. If parts out of acidic plating solution not wash well, although can‘t see what after drying, but when it is be affected with damp be affected with damp, resumed on the surface of the acidic fluid, caused the corrosive medium, will promote the metal coating corrosion rust. Some chrome plating well soon after she gave birth to rust, without clean is one of the reasons. Cold and hot water washing exchange can make deep hole solution has been washed, so usually exchange with cold, hot water washing process was clean.
Whether in cold water or hot water, should be kept clean, transparent degree to see the bottom of the sink, water for washing water itself contains some organic colloid materials, will make the coating and base metal joint not good, skin peeling, flaking off. The clean water can reach with flowing water, because of the water in the tank in flow state, often can not change into fresh clean at any time. According to the general rule: to oil to reoccupy cold water after cleaning in the flow of hot water to wash; Parts can only be taken from the derusting solution, with flowing water washing, can‘t use hot water to wash. The former is due to the parts attached to the surface of the saponification and alkali solution are easy to wash in hot water. The latter because rust parts such as the water after washing and promote oxidation, surface generating yellow rust soon, this is don‘t want to in the process of cleaning.
