Hardfacing by welding is the most economic way to enhance the life
of the components which are exposed to high abrasion environment.
Chromium rich electrodes are widely used due to their low cost. It
is planned to study the effect of carbon and chromium over a wide
range, on the resultant microstructure as well as wear behavior of
the deposited layers, of the bottom plate of concrete mixer used in
ready mix concrete plant.Six types of iron-based hardfacing
electrodes with a wide range of C (0.6-5% by wt.) and Cr (3.5-35%
by wt.) were selected to deposit, by the manual metal arc welding
process on the mild steel plate of concrete mixer. The abrasive
wear responses, hardness and the microstructures were compared with
that of mild steel.Abrasion tests were carried out in a sliding
wear abrasion test machine. surface analysis were made using
SEM-EDAX, XRD Analysis.Field test was performed, by hardfacing on
the actual size mild steel plate.The extent of improvement in wear
performance of mild steel due to all hardfacing alloys is quite
appreciable as compared to mild steel. Further the life of
hardfaced plate was enhanced by 3.11 times compared to mild steel
plate resulting net cost
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