High Frequency Aluminum Welding

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High frequency aluminum welding.

Subscribe for new videos every monday and friday. This ends up causing the machine to stall at low amperage since the alternating current loses most of its half cycles when the flow of the current is changed. Therefore we have developed high frequency linear friction welding hflfw in which a higher frequency than in the case of conventional lfw process is used with the aim to weld high thermal conductivity materials such as aluminum alloys. Setting the frequency from 120 to 200 hz provides an ideal frequency for most aluminum welding.

This video is about ac frequency adjustments and when to use different frequency settings. If you ve had trouble doing so here are the top 10 mistakes made while tig welding aluminum. Gtaw welding aluminum with alternating current high frequency gtaw welding aluminum with alternating current high frequency gas tungsten arc welding gtaw process utilizes heat generated by an electric arc maintained between the workpiece and a nonconsumable ungsten electrode. This is part 3 in a how to tig weld aluminum series.

In general 120 to 200 hz provides an ideal frequency for most aluminum welding. Increasing frequency above 60 hz causes the current to change direction more often which means that it spends less time per cycle in both dcen and dcep mode. The process works at the frequency of 250 hz. 1 newbies often forget to use the high frequency setting and set it to continuous.

Frequencies between 80 and 120 hz are comfortable to work with increase control of the arc and boost travel speeds. By spending less time at each polarity the arc cone has less time to expand. And here is another golden rule of thumb. The arc is enveloped by a stream of inert gas.