Arc welding was invented around 100 years ago and, at least during the past 50 years, it has been the main fabrication method for structures made of steel and other metallic materials. There are several arc welding processes, which means thatthere are many possible ways to optimise the welding operation. With many of the methods, the mechanisation of the process is possible and this can decrease the cost of welding. With the large number of consumables available, the flexibility required toachieve appropriate properties in the welded joint is very high.
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