High frequency brazing of electrical connectors

High frequency brazing of electrical connectors

1. What is an electrical connector?

  The replacement product of the electrical connector (aviation plug) has the characteristics of small size, light weight, convenient use, resistance to plugging, good electrical conductivity, and good sealing. It is widely used in wiring connections between various electrical equipment, instruments and meters. Because electrical connectors have relatively high technical requirements for accuracy, air tightness, and weld flatness after welding, the application of electrical connector brazing technology has high requirements for induction brazing equipment.

Figure 1 Electrical connector

Figure 2 Various electrical connectors

2. Commonly used welding methods for electrical connectors

  The current welding of electrical connectors generally includes: vacuum brazing, reflow soldering, and hot plate welding; the above soldering methods are prone to excessive heating time, excessive "sophistication", oxidation or uncontrollable heating temperature, which may cause the performance of the workpiece to decrease or Cause irreversible damage to the workpiece. Induction brazing technology can well overcome these shortcomings to improve product quality.

Third, the advantages of induction brazing in the welding of electrical connectors

(1) Since the heat is generated by the workpiece itself, it is heated quickly, and the surface oxidation of the workpiece is much less than that of brazing in the furnace, and it can prevent the growth of the grains of the base material and the development of recrystallization.
(2) Due to the skin effect of induction heating, local heating of the workpiece can be realized, and the high degree of heat localization can make the solder joints quickly reach the required temperature for melting without risking damage to the workpiece.
(3) Since induction heating brazing adopts a heating method from the inside out, its effect is not affected by the change of the brazing position or the joint.
(4) Induction heating can achieve rapid heating and cooling, often in a few seconds, and the welding cycle is faster, which improves production efficiency and is very suitable for automated and large-scale production processes.

Electric connector welding

4. what other fields can induction brazing be used in?

At present, induction brazing technology is widely used in various metals, including aluminum, pure copper, copper alloy, iron, cast iron, stainless steel and other welded parts with symmetrical shapes. It is especially suitable for the socket connection of pipe fittings, pipes and flanges. The connection of shafts and sleeves and other similar joints.

1. Air conditioning and refrigeration industry

 Welding of various copper, aluminum, stainless steel, carbon steel, copper and brass, copper and aluminum, such as: distributor, diverter, pipe joint, sight glass, compressor outlet, liquid storage tank, liquid storage Welding of bottle, four-way valve end cap, branch pipe, etc.

2. Compressor outlet copper-iron of automobile air-conditioning system, aluminum interface of receiver dryer, aluminum tube and aluminum tube in pipeline, aluminum tube and joint, single tube pressure plate, double tube pressure plate, condenser evaporator outlet pipe, silencer Dispensers, aluminum distributors, etc.

3. New energy battery power battery system

Water-cooled plates, water-cooled belts and joints, plugs, faucets, etc.

4. Other

Alloy cutter head, shield machine picks, etc.