What is a cold welder
Cold welding machine is an intelligent precision welding equipment produced between laser welding and argon arc welding. It can achieve the accuracy of laser welding and the strength of argon arc welding, integrating the advantages of both.
Cold welding machine is a kind of welding equipment, mainly used for welding repair, generally used for a variety of materials welding, such as stainless steel plate welding, copper plate welding, aluminum plate welding, stainless steel welding, stainless steel mirror plate welding, iron plate welding, galvanized plate welding, square tube welding, round tube welding and other types of metal welding.
How cold welding works
The cold welding machine mainly generates local high temperature through the instantaneous discharge of pulse current, so that the surface of the metal material quickly melts and combines together, so as to complete the welding process, compared with the traditional welding method, the biggest feature of the cold welding machine is that it can complete the welding work in a very short time, the process almost does not produce heat diffusion, and the impact on the surrounding material is minimal. This feature makes the cold welder especially suitable for the welding of precision parts that are sensitive to temperature or do not allow large deformation.
Many people think that the "cold welder" is the first cold after welding, but in fact the "cold welder" is the first cold after welding, and the "cold" is the workpiece, whether it is welding or welding repair, the cold welder can maintain a low surface temperature of the workpiece after welding, to avoid high temperature and lead to thermal deformation or thermal discoloration, to ensure quality.
Doughywelder-TIG-200COLD Colder welder
Advantages of cold welder
-Low heat input
The welding process produces less heat, which can effectively avoid the problems of heat deformation, heat affected zone expansion and microstructure change caused by high temperature of the base material.
-High precision welding
The cold welding machine accurately sets the current and arc discharge time to ensure that the input energy is only enough for the fusion between the welding wire and the workpiece, and there is not too much energy on the workpiece, so that the influence of heat on the surface of the workpiece is minimized, so as to achieve the welding accuracy of laser welding.
-Weld appearance
The weld is flat and smooth, the color is close to the base material, and no or only a small amount of subsequent grinding treatment is required.
-Wide adaptability of materials
It can be used for welding a variety of metal materials, including temperature-sensitive materials.
-Very high binding
The cold welding machine is fusion welding, and the bonding degree after welding is very high, which can reach the bonding degree of argon arc welding. Suitable for all kinds of processing methods, no binding degree is not firm, falling off and other phenomena.
-Easy and flexible operation
Intelligent mode, easy to operate, easy to master.
-Reduce base material damage
It has little influence on the properties of the base material and maintains the original characteristics of the base material.
Environmental protection and energy saving
Energy consumption is relatively low, and does not produce a lot of harmful gases and smoke.
The use of cold welding machine
Cold welding machine has the advantages of fast repair speed, high repair precision, and not easy to produce discoloration and deformation, so it is widely used. The application range of cold welding machine includes mold manufacturing industry, plastic and rubber industry, shipbuilding, power industry, machinery industry, automobile and locomotive manufacturing and maintenance industry, chemical industry, casting industry, construction industry and other fields.
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