Nanjing Sanmen Bay Terminal Block Material Selection

The overall quality of the connection terminal involves design, production, storage, testing and other aspects. The selection of materials is a key reference factor for design. Many design concepts and design indicators can only be achieved through the corresponding materials, and it is also the basis for all production to proceed smoothly.

For example, the most plastic materials used in the terminal blocks are used as an example to explain what specific impacts high-quality materials and inferior materials have on product quality in the production process. Because the metal conductor in the terminal block will have a current through during operation, it will generate heat, so the flame retardant performance of the plastic is very important. It also has the ability to withstand impact and aging. Due to the variety of operating environments, the flexibility of the terminals is also important. The elasticity of a material is related to many elements. It is not as good as the chemical element of the material, hardness, elasticity index, resistance to pull, etc. The calculation of the elasticity index is generally performed by selecting the fourth strength theoretical formula of the material mechanics.

Another important material for producing terminal blocks is the metal conductor used to conduct electrical signals in the middle. In general, good conductive metals should be selected. This can not only speed up the signal transmission speed, reduce the damage of signal intensity, but also reduce the operating temperature and increase the service life of the product. In nature, gold or silver is the best conductive material, but due to its high cost, copper is often used in general products. If you want to further improve its conductivity, you can use the method of gold plating on the metal surface (because silver is cheaper, but it is easy to fuse off, it is generally not used.). Because the experiment proved that the temperature of the terminal is 80 percent, it comes from the contact surface between the metal lead and the two ends of the wire, as long as the resistance of the secondary contact surface is reduced, the conductivity can be greatly increased.

In order to pursue better applicability, many manufacturers often compare the elasticity of the cavity material, but the decrease in the conductivity causes the entire temperature of the connection terminal to rise too quickly, and the maximum working temperature is too large, resulting in a decrease in conductivity. The size of elasticity is a very complex one. The effect of various combinations of material elements has a lot to do with the chemical elements, material hardness, and tensile strength of the material itself. Therefore, it is difficult to control proper elasticity. It is increasingly difficult to balance its electrical conductivity. However, this is an unavoidable problem. When the conductivity of a material is quantified, the resistance is small, and correspondingly, it is more energy-efficient, the temperature rise is even lower, and the environment adaptability becomes stronger. There is a strong connection between the insertion force and the contact resistance, and it is a quadratic curve. The most influential rate is the number of film resistors. Since it directly affects the free movement of electrons, it can account for 80% of the total resistance. The service life of an electrical component is also almost controlled by it.

Another point that Nanjing Sanmen Bay needs to specify is that in addition to the main materials that are directly involved in the production of parts, the selection of materials such as guarantees is also important. Because the main role of the connection terminal is to play a role in the connection of different wires. Therefore, if the packaging material does not play a good role in protection, inadvertently during the transportation process may cause damage to the product, affecting its connectivity.