2 To
aid in acquiring this knowledge, this section is devoted to a discussion of what
happens if one or more of the
welding conditions are improperly adjusted. These
pages should be referred to as often as necessary to establish the ideas firmly
in the minds of those persons
responsible for maintaining consistent production of sound welds having good appearance
and acceptable
mechanical properties. Continued
on next page... Welding
Current, Voltage and Speed Welding
current, voltage and speed are the three most important variables in submerged
arc welding. The quality
of the finished weld depends almost entirely upon their proper selection and control.
For this reason, the
operator should know how each variable affects the welding action and what changes
to make if any are required.
The following section discusses the effects of the variables and gives illustrations
of the results of good
and bad welding practices. (See Figs. 27, 28 and 29.)
