Reconstruction of climbing blades by SMAW process using E۶UM۶۰

Wear of parts and equipment in industrial complexes is one of the most important problems of industry and mining units and craftsmen are involved in this issue. Abrasion in acute and critical situations can cause failure and malfunction of parts and devices. And in this case, the producers pay heavy costs that result from the cessation and backwardness of production. In this study, the application of a hard metal layer by the SMAW process using E۶UM۶۰ electrode on the base metal of ۱.۲۵۵۰ was investigated. Various parameters such as electrode type, diluent substrate, preheating, postheating as well as heat treatment were performed in different samples and the best results were evaluated. Samples in the form of tablets with a diameter of ۵۰ mm were prepared by the optimal method and after welding and heat treatment, wear test was performed for welded samples and the raw sample was used as a control sample and the results were compared. It was observed that the repaired sample has better conditions in terms of abrasion resistance and hardness than the raw sample. By examining the results and analyzing the data, a large part of the damaged tool steels can be repaired and returned to the production line.

Keywords:

SMAW Welding , Hardfacing , Repairing , E۶UM۶۰ Electrode.