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Temperature Correction for Thickness Measurements of Hot Rolled Steel Plates

C Gheorghies , S ConduracheBota

钢铁研究学报(英文版)

Measuring the thickness of steel plates during the hot rolling process is crucial for getting the necessary feedback to obtain the desired values at room temperature. The dilatation and the phase transformations that steel suffers during it's heating and subsequent cooling when rolled strongly influence the results of thickness measurements. The radiometric method provides the necessary means to make real-time and fully automatized measurements of steel thickness during rolling, if only the temperature correction is precisely known and taken into consideration. This article proves that the experimental results concerning the relative variation of steel thickness and of it's corresponding mass-thickness variation can be correctly explained by means of the theory of metal dilatation correlated with the theory of nuclear radiation absorption when passing through a metal or metallic alloy, such as steel.

关键词: steel;hot rolling;dilatation;phase transformation;temperature correction;gamma rays;X-rays;attenuation

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