A process for producing high density high purity hydration resistant dead burnt dolomite from by-product dolomite concentrate obtained while benefciat on of low grade rock phosphate ore

摘要

We claim : 1. A method of welding defects in castings and forgings made of steel, preferably heat-resisting steel, by means of an austenitic electrodes, characterized in that in the course of welding  an austenitic nickel-base electrode on nickel basis is employed.