Welding process and electrode therefor.

摘要

A manual metal arc process for depositing weld metal on a cast iron workpiece is accomplished by using a welding electrode having a cast iron core with a coating of limestone and ferro-silicon. The proportions of limestone and ferrosilicon in the coating are selected so as to give a carbon equivalent value in the deposited weld metal substantially equal to the carbon equivalent value in the workpiece als calculated from the formula <MATH> t