Abstract
There has been proposed and applied several surfacing technologies. However, surveying those procedures, no appropriate process was appeared to coat 1 mm thickness layer on substrate. Considering industrial application, it is quite effective to obtain by hard coating layer with 1 mm thickness. This paper deals with the fundamental approach to establish friction surfacing technique. Friction surfacing has been proposed in early stage of development friction welding. Theoretical approach and practical application have not been tried. Experiments clarify the effect of operating parameters on surface quality using conventional friction welding machine equipped sliding stage. Materials selected were martensitic stainless steel, AISI440C with 1C-17Cr as coating and low carbon structural steel as a substrate. It is confirmed that stable hardened coated layer can be obtained with dimensions of 20mm width and 1 mm thickness using 20mm diameter of coating material. No dilution was observed in this process. Hardness values reached around 700 to 800Hv as coated condition. Coated dimensions depended on friction speed (rotation speed) of coating material, and lower friction speed can make thicker and wider depositions. Deposition speed is nearly same or more than conventional arc welding
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