Patent ID: 8920024

Claim:
Steel plate temperature assurance equipment comprising, together with a steel plate manufacturing line including a finishing mill and accelerated cooling equipment disposed above a transportation line on the downstream side of said finishing mill as to the advancing direction of the steel plate manufacturing line: temperature measurement means configured to measure steel plate temperature at least on the upstream side or downstream side of said finishing mill, and at least on the upstream side or downstream side of said accelerated cooling equipment; and measured temperature analyzing means configured to analyze the steel plate temperature measured by said temperature measurement means; wherein said temperature measurement means further includes a first temperature measurement means that includes a scanning radiation thermometer disposed on the downstream side of said accelerated cooling equipment so as to scan the plate width direction thereby measuring a width direction temperature distribution of the plate; wherein said temperature measurement means comprises a second temperature measurement means that includes an optical fiber radiation thermometer installed at least on the upstream side or downstream side of said finishing mill, and at least on the upstream side or downstream side of said accelerated cooling equipment, and installed at least on the lower surface side of said transportation line steel plate; and wherein said measured temperature analyzing means obtains steel plate temperature from the temperature measured by said temperature measurement means; said first temperature measurement means being configured to measure a surface temperature distribution of one surface side selected from the upper surface of a steel plate and the lower surface of a steel plate; said second temperature measurement means being configured to measure a surface temperature distribution of the surface side different from the surface side to be measured by said first temperature measurement means, at the corresponding position measured by the first temperature measurement means; wherein the number of measurement points to be measured by the second temperature measurement means is smaller than the number of measurement points to be measured by said first temperature measurement means; and said measured temperature analyzing means comprising means configured to calculate the surface temperature of a measurement location of said second temperature measurement means from temperature measured by said first temperature measurement means, to obtain calculation error from the difference between the calculated temperature and the temperature measured by said second temperature measurement means, and to calculate surface temperature other than the measurement locations of said second temperature measurement means using the calculation error.