Welding Cast Iron Ac Or Dc. Its a good option to minimize the extreme heating and cooling of the electric welding processes and its easier to maintain the temperatures of the components with it. But Aluminum Bronze filler rod is very sluggish on DCEN.
Dont get this all hot and red do a little at a time. Its a good option to minimize the extreme heating and cooling of the electric welding processes and its easier to maintain the temperatures of the components with it. Preheating and slow cooling of the component is the crux for the cast iron welding procedure.
AC and DC welding can be used for accomplishing different tasks.
In most cases welding on cast iron involves repairs to castings not joining casting to other members. Have a look at the Types of welding using DC. AC and DC welding can be used for accomplishing different tasks. The rules on current and polarity are seldom clear cut.