The Flooring Expert

When the wiring terminal is plugged in, due to factors such as design or material, the plug and socket, or the pin and Jack cannot be normally separated, which will interrupt the signal of the whole control system. Reinforcing sws are sws and nuts that fix both ends of the terminal. Because of the design deviation, the wrong material is selected or the process is not in place, the quality of mold, welding, heat treatment and other processes will become worse, and the assembly is not in place, so there will be the problem of poor fixation. In addition, his appearance is not very good due to rough processing such as corrosion, cracking and flash, because the size of the positioning lock will deviate, and then the processing quality will deteriorate, and there will be fixed problems in general. The terminal block is the most frequently used connecting device in the industrial electrical field. Due to the variety of use environments, the terminal block needs to meet various electrical equipment, environments and standards. The terminal structures such as splicing slot, reinforcing sw, marking strip and error proof plug-in should be brought into operation. In order to ensure the reliability of the terminal quality and good use effect, it is also necessary to carry out a series of effective preventive reliability tests according to the standard technical requirements. First of all, pay attention to prevent poor contact of wiring terminals. Users need to conduct conduction detection after installation, and then conduct instant break detection. Because some terminals are actually used in dynamic vibration environment. Only checking whether the static contact resistance is qualified does not guarantee the reliable contact in the dynamic environment. This is because the connectors with qualified contact resistance still have instantaneous power failure during vibration, impact and other simulated environmental tests. Therefore, for some products with high reliability requirements, dynamic vibration test should be carried out to assess their contact reliability.

The working characteristics of wire terminals are connection and conductivity, so the materials for making terminals should also meet its working conditions. The best conductive materials are gold, silver and copper. The first two are too expensive. Pure copper is relatively cheap and can meet its process requirements. Therefore, most of the current wire terminals are made of pure copper. Stainless steel is added with alloy elements such as chromium, niobium and nickel, which inases the resistance and greatly reduces its electrical conductivity. It is not suitable to be used as wire terminals. The hardness of wire terminals should not be too large, If the hardness is too large and the bonding is not good, the effective contact surface of the terminal will become smaller and the cross-sectional area of the conduction current will be limited. This is why tin should be hung on the surface of the terminal. The hardness of tin is relatively soft, which can make the bonding surface of the terminal fully bonded. With the continuous expansion of the application scope of conventional terminals, the extreme electrical connection environment also puts forward more strict requirements for the use of terminals. For example, in a non static environment, the terminal blocks used for electrical connection or signal communication have to meet the needs of the dynamic working environment. In view of this, the connector technicians designed the sw reinforced wiring terminal, and added more stable sw reinforcement on the basis of fixing the plastic clamping point, so as to avoid the above possible problems. Only adding fixing sws at both ends will not inase the workload of wiring. The continuously improved circuit board technology has greatly inased the current that can be carried by the wiring terminals installed on the panel, which has broken through the limit of 110A, far exceeding the level of previous products. The quality of wiring terminals is directly related to the fundamental interests of connector manufacturers. A good terminal product is like a handicraft, which looks pleasant. Terminal blocks must be easy to install on site because they are often installed at the front end of easily visible product panels. Fire retardant engineering plastics shall be used for insulating parts, and iron shall not be used for conductive materials of copper; The plastic insulating materials and conductive parts of the terminal are directly related to the quality of the terminal, which determine the insulation function and conductive function of the terminal respectively. The failure of any terminal will lead to the failure of the whole system engineering.

The most important thing is the processing of terminal thread. If the thread processing is not good and the torque is not up to standard, the function of connecting conductor will be lost. Thread refers to the thread of the wiring terminal on the instrument to connect with the field connector. For example, for some two-wire transmitters in the industrial field, the thread specification of the commonly used wiring cable fixed connector. The insulation resistance of the terminal insulator needs to be checked. For some process requirements, the electrical performance needs to be tested after assembly. Under normal circumstances, the reasonable process should be process sening in the state of insulator parts to ensure qualified electrical performance. To improve the requirements of mold design level, due to the different terminal designs of different shapes, how to carry out reasonable design is very important. If the structure is unreasonable, the product will be unqualified; For high-precision equipment, the precision of terminal processing equipment is required to be high. The precision of foreign equipment can reach ± 0.002mm, while that of general domestic equipment can only reach ± 0.01mm; High quality basic processing technology. A good connector mold needs the perfect combination of design, equipment and technology. At the same time, it has high requirements for equipment matching and high technical barriers. Guosheng adopts the combination of advanced CNC plane grinding, full-automatic optical curve grinding, slow wire cutting, machining center and other equipment for production. Terminal design, material selection and processing technology are the three core factors affecting the quality of terminal. At the same time, accurately handling the design, material selection and processing technology of terminal is also the prerequisite for each terminal manufacturer to win the market.