Method for measuring coefficient of secondary cooling area for continuous casting

Abstract

The invention discloses a method for testing the heat transfer coefficient in a continuous-casting secondary cooling area, which comprises casting a flame couple into a crystallizer, and fixing in a casting blank, dragging the flame couple through the casting blank to pass through the secondary cooling area, measuring the temperatures of two temperature measurement points in the casting blank through the flame couple, outputting electrical signals, adopting a signal processing unit to separate and magnify the electrical signals, and conversing into digital signals to be output, splitting the casting blank, measuring the distance between two temperature measurement points in the casting blank, adopting a calculation unit to record each measurement data, calculating and processing, and calculating the heat transfer coefficient. The testing method adopts a couple pulling method to directly measure temperatures in the casting blank of the secondary cooling area, and actually reflects the integral influences of various heat diffusion in the secondary cooling area through calculating to get the heat transfer coefficient, the measurement data are more accurate and reliable, and the actual production applicability is improved. The phenomenon that the flame couple is swung is avoided through adopting a supporting stand to fix the flame couple, and the accuracy of measurement is greatly improved.

Description

technical field [0001] The invention relates to the secondary cooling technology of slab continuous casting, and more specifically relates to a method for measuring the heat transfer coefficient of the secondary cooling zone of continuous casting, which can measure the comprehensive heat transfer coefficient of the secondary cooling zone of continuous casting. Background technique [0002] In the slab continuous casting process, in order to formulate a reasonable secondary cooling water distribution system and provide accurate heat transfer boundary conditions for the continuous casting solidification heat transfer model, it is necessary to measure the heat transfer coefficient of the continuous casting secondary cooling zone. The Chinese patent with the notification number CN86102931A discloses a heat transfer coefficient tester. The patent first uses a heating temperature control system to heat the metal test piece, and then uses a thermocouple to measure the temperature of...

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Problems solved by technology

[0003] Aiming at the shortcomings in the prior art that the above-mentioned measured heat transfer coefficient is relatively one-sided and cannot reflect the comprehensive heat transfer process of the entire secondary cooling zone, the purpose of the present invention is to provide a method for measuring the heat transfer coefficient of the continuous casting secondary cooling zone. The measurement method can measure the comprehensive heat transfer coefficient of the secondary cooling zone and improve the accuracy of the measurement

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