A temperature measuring device and method for measuring the temperature of a rolled piece in a hydraulic tension warm rolling mill

Abstract

A temperature measuring device for measuring the temperature of a rolled piece of a hydraulic tension warm rolling mill, including a double-piston rod cylinder and a pneumatic rod driven by it. There is a temperature measuring rod that can move up and down in the cavity of the pneumatic rod; the temperature measuring rod is placed in a protective cover Among them, the temperature measuring contact piece at the lower end protrudes from the hole at the lower end of the protective cover, and is kept in a compressible state by a compression spring. The steps of using this device to measure the temperature of the rolled piece of the hydraulic tension warm rolling mill are: install the temperature measuring device and the clamp displacement sensor; debug the temperature measuring device; measure and record the distance between the temperature measuring device and the center line of the roll; set the temperature measuring device for the rolling mill control system Device driver; the control system controls the temperature measuring rods of the left and right temperature measuring devices to move up and down according to the program, so as to realize continuous temperature measurement of the rolled piece. Compared with non-contact infrared thermometer temperature measurement, the temperature measurement method is simple and fast, and does not need to calibrate the blackness coefficient; the measurement data is accurate and reliable, especially for the temperature measurement effect of magnesium and aluminum alloy rolling pieces.

Description

technical field [0001] The invention relates to a temperature measuring device, in particular to a temperature measuring device and method for measuring the temperature of a rolled piece of a hydraulic tension warm rolling mill. Background technique [0002] The hydraulic tension warm rolling mill is an experimental rolling mill used for the research of warm rolling process of hard-to-deform metal strips at room temperature. The rolling mill consists of a four-roll reversing mill, tension devices distributed on both sides of the four-roll reversing mill, a heating device for a rolled piece (metal strip sample), a hydraulic system and an electric control system. Tension is applied to the rolled piece by the tension device, and the rolled piece is heated online by resistance heating, and the electric control system controls the heating temperature of the rolled piece through the power adjustment device. On-line continuous measurement of the temperature of the rolled piece is ...

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Problems solved by technology

[0005] For another example, use the same two temperature measurement methods to measure the temperature of magnesium alloy heating and rolling. When the temperature of the thermocouple reaches 300°C, the measured value of the infrared thermometer is only 65°C, the error is as high as 235°C, and the distortion is more serious.

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