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High frequency welding fins

High-frequency welding (high-frequency welding) is a solid resistance heat for energy. Welding the use of high-frequency current in the workpiece resistance heat generated within the surface of the workpiece welding zone to melt or close to the plastic state, then with or without exertion of forging force to achieve the combination of metal. So it is a solid phase resistance welding method. High-frequency welding According to the high-frequency current in the workpiece to generate heat can be divided into contact with high-frequency welding and induction high-frequency welding. When high frequency welding is applied, the high frequency current is transmitted to the workpiece by mechanical contact with the workpiece. Induction of high-frequency welding, the high-frequency current through the workpiece outside the induction coil coupling effect in the workpiece to produce induced current. High frequency welding is a specialization of strong welding methods, according to the product with special equipment. High productivity, welding speed up to 30m / min. Mainly used in the manufacture of pipe longitudinal seam or spiral seam welding.

High-frequency welding of high-frequency current of the two effects of content:

Skin effect - when the conductor through the AC current, the conductor cross section of the current distribution is not uniform, the current density from the conductor center to the surface gradually increases, most of the current flow only along the conductor surface of a physical phenomenon. The lower the resistivity of the conductor, the greater the permeability, the higher the current frequency, the skin effect of the more significant.

Proximity effect - When a high-frequency current flows in opposite directions in two conductors or in a reciprocating conductor, the current concentrates on a particular physical phenomenon that flows near the conductor.

High-frequency welding is usually used in the current frequency range of 300 ~ 450kHz, and sometimes use as low as 10kHz frequency

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WUXI JINKER POWER EQUIPMENT CO.,LTD.
Address: No.62, Luou Road, Huidai Town, Wuxi City, Jiangsu Province
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