THE problem of oxidation is one that is an ever‐present source of trouble to the welder. It is particularly the case in aircraft construction, where light‐gauge metals are most frequently employed. There is also the complementary, though less obstinate, problem of carburization. Elimination of these can be effected to a certain extent by one or more of several methods. However, before dealing with their cure, some notes on the nature of oxidation and carburization may lead to a better understanding of the processes.
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