EFFECT OF COATING THICKNESS ON ADHESIVE WEAR RESISTANCE OF ELECTRODES FOR WELDING OVERLAY

Abstract

Introduction:
An effective way to increase the durability of parts is to apply a hard welding overlay. The production of these electrodes in Cuba is vital, as the country has the necessary infrastructure and raw materials.
Objective:
To determine the operational and metallurgical properties of the ECromita 1 and ECromita 2 electrodes, as well as the influence of coating thickness on their resistance to adhesive wear, in comparison with a commercial electrode (UTP 620).
Materials and Methods:
The operational properties were evaluated using expert criteria and quantitative methods. Weld deposits were characterized by optical spectrometry, metallography, hardness measurement, and adhesive wear tests (pin-on-disc).
Results and Discussion:
The operational properties were suitable for industrial use. The ECromita 2 deposit in the as-welded condition showed greater resistance to adhesive wear than UTP 620. ECromita 1 was less resistant in this state, with potential for improvement through heat treatments.
Conclusions:
The ECromita 2 electrode has operational properties and resistance to adhesive wear that make it a viable solution for industrial application, specifically in the restoration of parts damaged by this wear mechanism.