A Composite Surface Formation during Friction Surfacing for Aluminum Pipe Internally Coated With Zinc

Abstract

Coating involves the application of a thin film of functional material to a substrate, such as paper, fabric, film, foil or sheet stock. Coatings may be applied as liquids, gases or solids. Coatings can be measured and tested for proper opacity and film thickness by using a draw down card. At the lower speed and lower forward time, the hardness is approximately equal but a slightly difference in hardness. The hardness increases with an increase in reverse time at high speed of the pipe and higher forward time but there is a difference in hardness at lower forward time and higher forward time. The thin film is formed during machining between aluminum and zinc. The hardness of the internal surface of the pipe varies with the speed of the pipe at the constant forward time and reverse time. This happens due to lower speed and at higher forward and lower reverses time results higher friction leads to more deposition. The coating thickness is increases with an increase in forward time at low speed and low reverse time. The coating thickness is higher at higher forward time and lower reverse time due to more amount of zinc deposition due to more axial compressive forces. The coating thickness is increases with an increase in forward time at the condition of higher pipe speed and at lower reverse time due to higher plastic deformation which results coarse grain structure. The coating thickness of the internal surface of the pipe varies with the speed of the pipe at the constant forward time and reverse time. This happens due to lower speed and at higher forward and lower reverses time results higher friction leads to more deposition. The study reveals it is a technique to improve the properties at the interface between aluminum and zinc.