Push-button switch is a common type of electronic switch, but it is easy to be affected by oxidation after a long time of use, resulting in insensitive switch or failure. Therefore, how to prevent the Key Switch oxidation and effectively deal with the problem after oxidation is the focus of electronic switch industry. This paper will introduce the anti-oxidation method of key switch in electronic switch and the treatment method after oxidation.
1. The push button switch oxidation prevention method
Use oxidizing resistant materials
It is one of the effective ways to prevent the oxidation of key switch to make the key switch with oxidizing resistant material. At present, the popular oxidation resistant materials in the market mainly include stainless steel, aluminum, gold plated materials, etc. Among them, stainless steel is a very corrosion and oxidation resistant material, very suitable for use in Key Switches. According to statistics, the probability of oxidation of the key switch made of stainless steel material is more than 10% lower than that of other materials after a long time of use.
Precision machining and finish
In the process of making the Push-button switch, the precision machining and surface treatment can also play a certain role in preventing oxidation. Precision machining can make the contact surface of the key switch more smooth, so as to avoid friction and oxidation in the process of use. The surface treatment can increase the corrosion and oxidation resistance of the Push-button switch, making it more durable. At present, the main surface treatment methods on the market are silver plating, electrophoretic coating and anodic oxidation. Through the statistical analysis of experimental data, the surface treatment method can reduce the oxidation rate of the Push-button switch by about 30%.
2. Treatment of Push-button switch after oxidation
Clean
When the Push-button switch is affected by oxidation, it often leads to switch failure or insensitivity. At this time, you can choose to clean the key switch. Cleaning can effectively remove the oxides on the surface of the key switch, so as to restore the normal function of the switch. In the cleaning process, you can use alcohol, detergent and other chemicals, you can also choose the method of mechanical cleaning. Through the analysis of the experimental data, the recovery rate of the key switch can reach more than 90% by cleaning.
Replace
If the function of the Push-button switch is still unable to recover after cleaning, then you need to consider replacing the Push-button switch. You can choose to use a key switch of the same model or a higher level. At the same time, it is also necessary to pay attention to the correctness of the front and back wiring to avoid the problem of poor wiring. According to market research data, replacement of key switches is the most common and effective way to solve oxidation problems, because it can completely solve the problem caused by Push-button switch oxidation.
