1. Introduction of the instrument: In the extrusion production of aluminum profiles, the usual method is to use the rapid thermocouple contact method to detect the temperature of the aluminum. During the extrusion process, the profile moves all the time, and the detection components must move along with the profile and cannot be maintained. On-line monitoring, and the man-made operation method is different at the time of detection. The aluminum profile is cooled immediately after the mold is released, resulting in a large deviation of the detection temperature detection, so it is difficult to obtain an accurate temperature and speed optimum match. Temperature detection is divided into contact and non-contact types.
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2. Promotion details in the same industry: When measuring, after considering the infrared radiation energy, emissivity and measured wavelength of the measured aluminum material, the accurate temperature is calculated by special compensation calculation. The instrument default algorithm is its special compensation operation software. The optical system collects infrared radiation energy and emissivity of the measured band of the target in the field of view, and then converts the photodetector into a corresponding electrical signal. The signal passes through the amplifier and signal processing circuit, and is converted to the temperature value of the measured target after being corrected according to the instrument's default algorithm and target emissivity.
3. Process requirements details: As the extrusion speed increases, the mold temperature of the aluminum profile will increase significantly. When the temperature exceeds a certain value, the microstructure and surface quality of the aluminum will appear in various title topics. The aluminum outlet temperature is monitored and tested to ensure the best match between extrusion output and profile quality. Usually in aluminum extrusion production, the maximum output is mainly determined by the extrusion speed, and the quality of the profile depends on the profile discharge temperature.
