Abstract
A model for the prediction of case depth in laser surface transformation hardening is presented. The model is based on closed solutions to the problem of three-dimensional heat flow in plates with finite as well as infinite thickness. A simple approximate expression for three-dimensional heat flow in semi-infinite plates is also given. The validity of the model was tested on four different steels. The experimental values obtained were within ±20% of the predicted values over the entire range of processing speeds.A model for the prediction of case depth in laser surface transformation hardening is presented. The model is based on closed solutions to the problem of three-dimensional heat flow in plates with finite as well as infinite thickness. A simple approximate expression for three-dimensional heat flow in semi-infinite plates is also given. The validity of the model was tested on four different steels. The experimental values obtained were within ±20% of the predicted values over the entire range of processing speeds.
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