Measuring method for temperature of molten aluminum alloy liquid

Abstract

A measuring method for the temperature of molten aluminum alloy liquid comprises an optical system, an infrared radiation colorimetric temperature measurer, a signal amplifier, a signal processing portion, a display output portion and the like. The measuring method is characterized in that according to the principle that the surface temperature of an object can be accurately measured by measuring infrared energy of radiation of the object, when the temperature is measured, the molten aluminum alloy liquid is constantly disturbed, the infrared radiation colorimetric temperature measurer is used for measuring the temperature, the infrared energy is focused on the infrared radiation colorimetric temperature measurer and can be changed into corresponding electric signals, the electric signals pass through the signal amplifier and a signal processing circuit and are converted into the temperature value of the molten aluminum alloy liquid after conversion, and then the temperature value is displayed and output. By adopting the method, the problems that when the temperature of the molten aluminum alloy liquid is measured, an adopted thermal couple is high in price and is damaged easily, temperature measurement is lagged and process difficulties exist in infrared temperature measurement can be solved, the method utilizing infrared rays for temperature measurement is easy to operate, the manufacturing cost is low, and implementing and monitoring of the temperature rise process can be achieved.

Description

technical field [0001] The invention relates to the metallurgical industry, in particular to a method for measuring the temperature of an aluminum alloy melt. Background technique [0002] At present, most of the molten aluminum temperature measuring devices in domestic and foreign industrial frequency furnaces adopt the form of thermocouples and protective sleeves, which have the following problems: ①The imported silicon nitride special protective sleeves used for temperature measurement thermocouples in industrial frequency furnaces are relatively long , Imported silicon nitride special protective casing is affected by the forming process, it is difficult to produce, so the price is expensive. Even so, the temperature cannot be measured when the molten aluminum in the power frequency furnace is too small, so the temperature measurement of the molten aluminum has always been a difficult point in the process control; ②The silicon nitride ceramic protective sleeve is a hard a...

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems that the thermocouples used in traditional aluminum alloy melt temperature measurement are expensive, easy to damage, temperature measurement lag and infrared temperature measurement have technical difficulties, the present invention provides a method for measuring the temperature of aluminum alloy melt, which can solve the problem of above question

[0005] The beneficial effects of the present invention are: not only solve the problems that the thermocouples used in the measurement of the aluminum alloy melt temperature are expensive, easy to be damaged, and the temperature measurement lags behind, and there are technical difficulties in infrared temperature measurement, but also the method of using infrared temperature measurement is simple to operate, The cost is low, and the implementation monitoring of the heating process can be realized

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