Some questions about the phenomenon of high-temperature heat treatment of the terminal block

Terminals in the column without air gap magnetic system, residual magnetism is too large. The remanence of the pole faces at the gap to the file part of the gap is 0.1-0.3mm, or in parallel with the coil ends of a capacitor 0.1uF. Enable the surface of a core of a contact period of time after the oil or greasy. The core surface rust oil terminals clean, iron surface  keystone jack should be smooth, but not too light, otherwise it is easy to cause delay release.
Throughout the assembly process, must withstand the high temperature and the preheating zone to a temperature by conduction wave soldering the terminal body. Flux shall not affect the terminals, must be easy to remove, can not have any residue. The entire assembly process must be cleaned with water. Preheat temperatures often reach 100 ° C or higher, the peak temperature of 280 ° C are not uncommon. Perforated solder pin must be accurate positioning, size appropriate, balanced place, and have good weldability, this will help the terminal insertion and welding.
In the course of the entire assembly terminals must withstand high temperatures generated by the impact of heat treatment, mainly used in welding preheating and convection preheat the heat conduction to the rca video cable  solder pin and solder to melt tin plate interface. Robust contact welding performance when starting the motor or short-circuit, high current to make contact. Weld head can not be released, with silver contacts easier welding. AC contactor main contacts should be used in anti-welding ability of silver-based alloys, such as silver iron, silver and nickel.
The optical fiber communication (transmission) chain, in order to achieve different terminal modules. The connection between the device and the need for flexible systems, must be able to have a removable (active) device connected between the optical fiber and the optical fiber, the WISDOM cat5e patch cable  light path can be transmitted in the desired channel, and to achieve the purpose of the completion of a predetermined or desired and requirements of the device to achieve this function is called connector. The terminal end faces of the two optical fibers is a precision docking, so that the light energy emitted by the fiber to maximize the output optical fiber coupled to the receiver to enable the optical effects due to its involvement in the system caused by the link and to minimize This is a basic requirement fiber terminals