PROSES PELAPISAN BAJA DENGAN METODE SEMBURAN KAWAT LAS OKSI-ASITILEN
Â Â Â Â Â Â Wire flame spray process is one of metal coating technique. The flame spray process is basically the spraying of molten metalÂ onto a surface to provide a coating. Material in wire form is melted in a flame (oxy-acetylene flame most common) and atomized using compressed air to form a fine spray. When the spray contacts the prepared surface of a substrate material, the fine molten droplets rapidly solidify forming a coating.
Â Â Â Â Â Â In this research, commercial steel wire (Fe-C), which has 1.25 mm in diameter, was used as raw material. The wire was heated and melted by two oxy-acetylene nozzles and then sprayed onto steel bar surface to form a coating. Vickers hardness testing and optical microscope were used to define the coating characteristic.
Â Â Â Â Â Â The result shows that the coating has higher hardness number than the substrate material and the intrusion of carbon was founded in the coating microstucture.
Keywords: coating process, wire flame spray, oxy-acetylene
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