Influence of frequency on high frequency welding machine welding.
Baoding Jinkai Automation Technology Co., Ltd.
www.weldedpipetube.com
E-mail：[email protected]
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Influence of frequency on high frequency welding machine welding.
Baoding Jinkai Automation Technology Co., Ltd. is a professional
manufacturer of high-frequency welding machines and induction
heating equipment.
The frequency of high-frequency welding has a great influence on the
welding, because the high-frequency frequency affects the distribution
of the current inside the steel plate. The influence of the selected
frequency on welding is mainly the size of the heat affected zone of
the weld. In terms of welding efficiency, a higher frequency should be
used as much as possible. The high-frequency current of 100KHz can
penetrate 0.1mm of ferritic steel, and 400KHz can only penetrate 0.04mm,
that is, the current density distribution on the surface of the steel plate,
the latter is nearly 2.5 times higher than the former.In production practice,
the frequency of 350KHz~450KHz can generally be selected when
welding ordinary carbon steel materials; when welding alloy steel
materials, when welding thick steel plates over 10mm, a lower frequency
such as 50KHz~150KHz can be used, because the alloy steel contains
The skin effect of chromium, zinc, copper, aluminum and other elements
is different from that of steel. Foreign high-frequency equipment
manufacturers have mostly adopted the new technology of solid-state
high-frequency. After setting a frequency range, it will automatically
track and adjust the frequency according to the material thickness and
unit speed during welding.