Seamless welding

Keywords:Seamless welding
Principle of seamless welding is gas shielded arc welding referred to as gas shielded welding or gas welding, it is the use of arc as a heat source, gas as the protective medium melting welding. During the welding process, the protective gas creates a protective layer of gas around the arc, isolating the arc from the puddle, preventing the effects of harmful gases and ensuring a stable combustion of the arc. Gas shielded welding, according to the electrode state, mode of operation, the type of protective gas, electrical properties, polarity, the scope of application to be classified.
seamless welding
Seamless welding depending on the specific circumstances, gas shielded welding can be used with different gases, commonly used protective gas carbon dioxide, argon, helium, hydrogen and gas mixture. The advantages of gas shielded arc welding are: good linear arc, easy centering, easy full position welding and automatic welding; concentrated arc heat, small weld pool, fast welding speed, narrow heat-affected zone, small deformation of welding parts and crack resistance strong, good weld quality. The disadvantage is not suitable for windy venue welding, arc radiation stronger.

Seamless welding technology, the welding device is through a transistor function device to the current 50 / 60Hz electric frequency into 20KHz or 40KHz electric energy high frequency power supply to the converter. Welding head is the mechanical vibration energy can be transmitted directly to the need to press the product of an acoustic device. Vibration through the welding work piece to the bonding surface vibration friction to produce heat to melt the plastic, but its welding strength is close to a piece of attached material.

Seamless welding technology not only helps to eliminate die welds, but also increases part accuracy, finish and appearance. At the same time, seamless welding technology in the injection molding process to implement an effective control and shorten the mold processing cycle. Due to the excellent surface finish of the product produced by this process, there is no need to use secondary plating and annealing, thus avoiding dimensional changes due to secondary shrinkage.
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