Many times we are using sockets, but there is no doubt that our socket copper pieces are sure to pay attention to the small chances. So, this small socket copper piece has a good effect? ​​Our socket copper piece is in daily life. In the middle, we have to choose the quality of the socket copper. What is the best way to know the quality? Especially what you need to know is whether the copper of the socket can continue to be used if it is rusty.
First, how to identify the copper socket
1. Look at the length of the copper sheet under the same material. The longer the copper piece, the better (because the length of the copper strip determines the distance of the socket, the wider the gap between the two sockets, the more convenient it is to insert at the same time).
2. Look at the thickness of the copper piece. The thicker the copper piece, the better the elasticity and the longer the life of the corresponding socket.
3. See if the copper sheet is formed once, the old riveted copper piece (obviously, it can be seen that the two materials are completely different from the middle bridge material, and there are obvious riveting points). One-shot molding is always better than the old-fashioned riveted copper, because the once-formed copper is always smaller than the riveted resistance, the smaller the relative heat, the better the elasticity, the higher the safety factor, and the higher the conductivity.
4, look at copper sheet material, copper sheet material is the main factor determining the performance of copper sheet, previously mainly based on pure copper material, the performance of the best copper, red copper followed by brass, the worst brass. Due to the limitation of the oxidation resistance of pure copper, copper alloys, copper-cadmium alloys, copper-nickel alloys and tin-copper alloys are now used. The best performance is tin-phosphorus copper alloy. For details, please see the article "Which is the socket shrapnel material pure copper and tin phosphor bronze?"
5, look at the forming method is a once formed copper piece is always better than the old riveted copper piece, high conductivity. Because the once formed copper sheet is always smaller than the riveted resistor and has better elasticity, the safety factor and life are longer.
6. Look at the thickness of the copper sheet. See that the thickness of the copper sheet is as thick as possible. The better the elasticity of the copper sheet, the longer the socket life.
7. Look at the contact mode of the copper piece. There are two main ways of contacting the copper piece and the plug conductive piece: point contact and surface contact. Surface contact is much more conductive and safe than point contact because point contact is prone to sparks and the copper sheet is more susceptible to loosening.
Second, the socket copper sheet rust precautions
1. Although the copper core is cost-effective, some switches often use the copper core to rust in a damp environment after a period of use. This rust has buried a huge safety hazard. Rust can cause poor contact, which leads to a large contact resistance. The contact heat can cause sparks and even cause a short circuit in the switch and cause a fire.
2. So when we pick the switch, we need to focus on the copper core that looks like a small inside. Ordinary bare copper is prone to rust, wear and corrosion, but there is also a tin-phosphor bronze, which is an alloy copper. In addition to its good electrical conductivity, it is not easy to heat, and has strong corrosion and wear resistance. As well as fatigue resistance, it is often used in the industry as a bearing tool. The maximum working temperature can reach 250 °C, which shows its strong stability.
3. The choice of tin-copper bronze for copper sheet guarantees the basic stability. At present, the new G20 3D drill-face switch of the Bulls has made a breakthrough: adding a dense nickel layer on the outer layer of tin-phosphor bronze. This is a dense oxide film formed on the surface even in a humid environment, thereby preventing the bulk metal from continuing to oxidize. In addition, it has high corrosion resistance and high ductility. This dense nickel layer is equivalent to wearing a thick "body armor" on the outside of the copper core to ensure that the copper core is not rust.
After the contents of our article, the method of identifying the quality of the copper is very special, and there are a lot of attention, then we can no longer ignore the existence of this socket copper, our If the copper plate of the socket is still dangerous, then everyone will continue to pay attention to our decoration home network. Thank you for reading this.
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