Measured residual stresses in large steel rolling components

Smith, D.; Hosseinzadh, F. and Truman, C. (2007). Measured residual stresses in large steel rolling components. In: Iron & Steel Technology Conference and Exhibition, 07-10 May 2007, Indianapolis, Indiana, USA.



The main focus of this research is to determine methods for improving product quality, production and costs in the rolling process through measurement of residual stress. Component optimization cannot be achieved without the knowledge of the initial (or residual) stress state in the components. Residual stresses combined with applied stresses are, therefore, important ingredients in determining the reliability and life of the rolling components. This paper demonstrates the novel application of a residual stress measurement method called the deep hole drilling (DHD) technique. This method was applied to obtain through-thickness profiles of residual stresses in several rolling mill components. For example, the application of DHD to a 850-mm-diameter roll, consisting of a spheriodal graphite sleeve that had been shrunk to fit a steel shaft, is described. Stress profiles were obtained to depths up to about 400 mm. The results from this roll, together with other roll sleeves, reveal that not only the manufacturing processes but also the operating conditions and material properties greatly influence the distribution of the residual stresses through the components.

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