After electroless nickel plating, in addition to baking and heat treatment such as hydrogen to improve the performance of the electroless nickel plating layer, various subsequent surface treatments can be performed to impart higher corrosion resistance, wear resistance and other surface functions. Post-plating chromate passivation treatment The electroless nickel plating layer after washing is immersed in a dilute aqueous solution of chromic anhydride (CrO3, 1-10%) for several minutes, and after taking out and washing and drying, the corrosion resistance of the plating layer is improved. Some products also contain additives such as film formers and wetting agents in the chromic acid solution. In addition to the passivation effect, it also has a closed film forming action, so that the effect of improving the anti-tarnishing property and the corrosion resistance of the electroless nickel plating layer is remarkable. Plated anodized coating A thin layer of a lower-phosphorus chemical nickel layer is further plated on the high-phosphorus electroless nickel plating layer to form a double-layer electroless nickel plating structure. Due to the low electrode potential of the surface layer of low-phosphorus electroless nickel plating, it becomes a sacrificial anode protective layer, which significantly improves the corrosion resistance of the plated parts. Similarly, in order to improve the long-term corrosion resistance of the plated parts, the electroless nickel plating layer is covered with an electroplated zinc, cadmium or other sacrificial anode alloy surface layer. Even after plating zinc and cadmium, heat treatment at a higher temperature is carried out in order to improve the ductility of the coating layer, and a diffusion layer can be formed in the interface region of different metal layers. The practical application results prove that after using this post-treatment technology, the anti-ocean atmospheric corrosion of steel parts is increased by about 10 times. Surface functionalization A thin layer (1-3 micrometers) of high coercivity magnetic material, such as a cobalt-based alloy, is vacuum sputter deposited on the surface of the non-magnetic electroless nickel plating layer to form a high performance magnetic recording device. This technical specification is used in the manufacturing process of computer hard disks. High-density printed circuit surface selective electroless nickel plating, and then gold-plated or electroless gold plating 0.3-0.8 micron on the surface of the electroless nickel plating layer will greatly improve the surface electrical connection performance. Electroless nickel plating A surface conversion film formed in dilute nitric acid or some special oxidizing medium, which has good optical absorption and emission characteristics. It is called "super black film" and is especially suitable for solar absorption devices. Concerned about surprises Tags: electroless nickel plating, diffusion layer, steel parts, nickel plating Previous: Vacuum plating technology for color stainless steel Next: Overview of the development of four famous hardware lock industry bases LED Sensor Batten Lights has options of microwave sensor and infrared sensor. There are two sensing modes. One is 0-10v dimming, and the other is on/off.
Toggle button can set the remote distance of remote control and sensor.
If you need sensor lights in factories or warehouses, corridors, or other indoors, you can choose this LED Sensor batten lights. If you need IP66 sensor light, you can choose Sensor Waterproof Light.
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The main difference between these two modes is that the 0-10v dimming mode can set the brightness of the light after the person walks, and the pending time of this brightness can also be set. On/off mode, you can only set the time for the lights to turn off after a person walks, but not the brightness (that is, functions 3, 4 cannot be implemented). The 0-10v dimming mode is more intelligent.
Briefly introduce the function of sensor light:
1. Set up daylight threshold: If the ambient light is higher than the set brightness, the sensing function will not be triggered.
2. Set up the hold time: The time for the light to maintain brightness after the person walks away.
3. Set up a stand-by dim level: set the brightness maintained after the person walks
4. Set up stand-by time: After the person walks, the time to maintain low brightness
5. Set up detection area: Set the detection area.