1. Interchangeability check

The interchangeability check is a dynamic check. It requires that the same series of matching plugs and sockets can be mated and connected to each other, and it is found whether there is any insulator, contact and other parts that are out of tolerance, lack of installed parts or inadequate assembly, etc. , And even cause disintegration under the action of rotating force. Another function of the interchangeability check is to detect in time whether there is any metal surplus that affects the insulation performance through the plug-in connection of the screw thread and the bayonet. Therefore, 100% of the wiring terminals of some important purposes should be checked for this item to avoid such major fatal failure accidents.

2. Torque check

Torque inspection is a very effective inspection method to assess the reliability of the terminal structure. For example, the US military standard MIL-L-39012 standard stipulates. According to the standard, samples should be sampled and tested for torque resistance in each batch to find problems in time.

3. General test of crimped wire

In electrical installation, it is often found that individual core crimped wires cannot be sent in place, or cannot be locked after being sent in place, and the contact is unreliable. The reason for the analysis is that there are burrs or dirt stuck on the threads of individual mounting holes. Especially when using the last few mounting holes that the factory has installed on a plug socket, if the defect is found, the crimping wires of the other holes that have been installed have to be unloaded one by one, and the plug socket is replaced. In addition, due to the improper selection of the wire diameter and the crimping aperture, or the error of the crimping process, it will also cause the crimping end to be weak. For this reason, the manufacturer must conduct a thorough test on all the mounting holes of the delivered plug (seat) sample before the finished product leaves the factory, that is, use the loading and unloading tool to simulate the wire crimped with the pin or socket to check whether it can be Locked. According to the product technical conditions, check the pull-out force of each crimped wire.