Abstract
Remelting of lamellar grey cast iron generates surfaces with excellent wear resistance, which are suitable for applications in highly stressed moving machine parts like camshafts, rocker arms, slideways etc. Presently industrial remelting processes by means of TIG, electron beam and laser have led to some technical disadvantages as rough surfaces, high grinding costs and expensive pre- and postheating attachments. A new process combination of induction preheating and laser surface remelting of grey cast iron avoids all these disadvantages, generates a microstructure in the remelted surface with improved wear resistance and increases the process rates.
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