If the fixing is not good, the light one will affect the contact reliability, resulting in instant power failure, and the serious one is product disintegration. Disintegration refers to the abnormal separation between plug and socket, between pin and Jack caused by unreliable structure due to material, design, process and other reasons when the terminal is in the plug-in state, which will cause serious consequences of power transmission and signal control interruption of control system.

由于设计不可靠、选材错误、成型工艺选择不当、热处理、模具、装配、熔接等工艺质量差、装配不到位等都会造成固定不好。遇到接线端子固定不好该怎么办呢？

Due to unreliable design, wrong material selection, improper selection of molding process, poor quality of heat treatment, mold, assembly, welding and assembly in place, the fixation is not good. What should I do if the terminal is not fixed well?

在电装时经常发现个别芯压接导线送不到位，或送到位后锁不住，接触不可靠。分析原因是个别安装孔螺牙处有毛刺或脏污卡死。特别是使用厂已电装到一个插头座的几个安装孔，发现该疵病后只得将已安装好的其它孔压接导线一一卸出，重新更换插头座。此外，由于导线线径与压接孔径选择配合不当，或由于压接工艺操作失误，还会造成压接端不牢的事故。

It is often found that the individual core crimping wire is not delivered in place, or cannot be locked after it is delivered, and the contact is not reliable. The reason is that there is burr or dirt on the screw teeth of individual mounting holes. In particular, the user has installed several mounting holes in a plug socket. After finding this defect, he has to remove the crimping wires of other holes one by one and replace the plug socket again. In addition, improper matching of wire diameter and crimping hole diameter, or wrong operation of crimping process will also cause the accident of crimping end not firm.

为此，生产厂在成品出厂前要对交货的插头(座)的样品所有安装孔进行通测，即用装卸工具将压接有插针或插孔的导线摸拟送到位，检查能否锁住。根据产品技术条件规定，对逐根压接导线进行拉脱力的检查。

For this reason, before the finished products leave the factory, the manufacturer should carry out through test on all the installation holes of the delivered plug (socket), that is, use the loading and unloading tools to send the wires with pins or jacks to the place, and check whether they can be locked. According to the product technical conditions, check the pull-out force of each crimping wire.

接线端子就是用于实现电气连接的一种配件产品，工业上划分为连接器的范畴。随着工业自动化程度越来越高和工业控制要求越来越严格，接线端子的用量逐渐上涨。随着电子行业的发展，接线端子的使用范围越来越多，而且种类也越来越多。用得广泛的除了PCB板端子外，还有五金端子，螺帽端子，弹簧端子等等。

Terminal is a kind of accessory product used to realize electrical connection, which is divided into connector category in industry. With the increasing degree of industrial automation and industrial control requirements are more and more strict, the consumption of terminals is gradually increasing. With the development of electronic industry, more and more terminals are used, and the types are more and more. Widely used in addition to PCB terminals, there are hardware terminals, nut terminals, spring terminals and so on.