Hardware knowledge: remove all kinds of dirty spots on the hardware
In the hardware processing, in order to achieve lubrication, heat dissipation and other stainless steel "target=_blank> stainless steel cleaning agent, aluminum cleaning agent, copper cleaning agent, galvanized sheet cleaning agent, multi-purpose cleaning agent and so on. Silicon Nitride can also be applied to solar cells. After the silicon nitride film is plated by PECVD, not only can it be used as an anti-reflection film to reduce the reflection of incident light, but also, in the deposition process of the silicon nitride film, hydrogen atoms of the reaction product enter the silicon nitride film and the silicon wafer. It acts as a passivation defect. Here, the silicon nitride nitrogen atomic number ratio is not strictly 4:3, but varies within a certain range depending on the process conditions, and the physical properties of the film corresponding to different atomic ratios are different. Silicon Nitride Ceramic Disc,Black Silicon Nitride Ceramic Disc,Ceramic Structure Disc,Plate Silicon Nitride Disc SHENZHEN HARD PRECISION CERAMIC CO.,LTD , https://www.hardcm.com
Hardware processing depends on the quantity, so the batch quality of cleaning is very important. For this requirement, the cleaning method can be immersed or ultrasonically cleaned.
Soaking is very simple. Take the CLF-700 mentioned above as an example. The CLF-700 is exchanged with 50-60 degrees of hot water to a 5% working solution. Then use a mesh basket to load the hardware and soak it directly into the cleaning solution. After 1-2 minutes, the washing basket is lifted up and down to play a role of washing. Soak for another 1-2 minutes, then rinse again and remove. After that, the surface cleaning liquid is removed by washing with water several times. Finally, according to the hardware structure, water removal and drying can be used.
There are two main points to note. One is the water after washing, the principle of washing clothes is similar, it takes too much or two to completely remove the cleaning solution. In addition, tap water contains a lot of impurities, leaving a circle of watermark after drying. If the surface of the hardware is high, pure water should be used in the last water rinse.
The ultrasonic cleaning method is the same as the immersion method, except that the ultrasonic cleaning is used for cleaning and cleaning. It should be pointed out that the ultrasonic wave only assists in enhancing the cleaning effect, and the key to the cleaning of the hardware is the cleaning agent.
Http://news.chinawj.com.cn Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
For ultra-high temperature gas turbines, aircraft engines, electric furnaces, etc.