This report shows three new methods for temperature measurement and their applicationsΔto steel process.
(1) The effect of multiple reflection in the radiation thermometry was theoretically and experimentally studied, and a method for simultaneous measurement of both temperature and emissivity was developed and applied at the color coated strip process.
(2) The self-scanning photodiode array was applied to temperature distribution measurement. The characteristics of photodiode arrays were investigated, and the micro-computer based system is now operated for temperature measurement of the welding bead at the ERW process.
(3) The temperature distribution measurement system using optical fiber was developed, and applied at the exit of C.C. spray zone and under the mould.
