Crack Test of Electrodes

Abstract

A new simple method is proposed of crackablity test of electrodes. The method is to check whether any crack is produced when two steel bars are welded together as shown in Fig. 1.
A the result of the use of the above testing method has shown that the practical use of electrifies and our testing method produce the same result as the melthod adopted by the Railway Technocal Research Institute.
We studied carefully to the relations of the quality of the steel bar to its diameter and the diameter of electrode as well as the cause of the crack.