There are three types of
tin wire welding: fusion welding, brazing and contact welding. Brazing is mainly used in the assembly of wireless point machines. Brazing refers to the technique of joining solid metals together by heating molten metals. The metal solder material that plays a role in brazing is called brazing material, that is, solder.
Soldering with tin-lead solder is called tin soldering, also called tin-lead soldering. The welding temperature of tin soldering is low, and it can be realized with a simple tool, an electric iron, and the method is simple. It is very convenient and easy to repair solder joints and replace components. As long as there is a power supply, it will not be limited by other conditions. Coupled with the advantages of low cost and easy automatic welding, this soldering method is very commonly used in radio assembly.
The formation process of the solder joint is as follows: the solder is heated and melted into a liquid state by the action of the flux, enters the gap of the metal to be welded, and forms a metal alloy on the surface of the weld to make the two metal bodies stick together firmly. Become a solder joint, that is, a solder joint. The metal alloy formed is formed by the tin and lead atoms in the solder entering the crystal lattice of the metal to be soldered.
In addition to tin soldering, brazing also includes copper soldering, silver soldering, etc., which are often used in special soldering. In addition to manual soldering, tin soldering is currently commonly used machine soldering methods such as dip soldering and wave soldering. This website has made a detailed introduction to these two welding methods, which can be referred to.
In recent years, tin-free soldering methods that do not use solder materials and fluxes, such as press-fit welding and wrap-around welding, have also been applied in radio assembly. Tin-free welding is also divided into two types: manual and machine welding.
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