Aluminum extrusion temperature program requirements details
ã€China Aluminum Industry Network】 1. Details of the instrument introduction
Temperature detection is divided into contact and non-contact two categories. In the production of aluminum extrusions, it is common practice to use rapid thermocouple contact to detect the temperature of the aluminum material. During the extrusion process, the profile is always moving. The detection element must move with the profile and cannot be monitored online. With different manipulation methods, the profile is cooled immediately after the mold is ejected, resulting in a large deviation of the detection temperature, so it is difficult to obtain a correct match between the temperature and the speed.
2. Process requirements details
Usually aluminum extrusion produces, the larger output mainly depends on the extrusion speed, and the quality of the profile depends on the profile extrusion temperature. With the acceleration of the extrusion speed, the profile extrusion temperature will increase significantly. When the temperature exceeds a certain value, the aluminum structure and surface quality will cause various problems. Therefore, the aluminum outlet temperature must be monitored at any time. Testing to ensure a better match between extrusion yield and profile quality.
3 with the industry promotion details
The optical system collects the infrared radiation energy and emissivity of the band measured by the target in the field of view, and then converts the photodetector and converts it into a corresponding electrical signal. The signal is converted into the temperature value of the measured target through the amplifier and signal processing circuit, and corrected according to the instrument's default algorithm and target emissivity. The instrument default algorithm is equal to its special compensation calculation software. When measuring, after considering the measured infrared radiation energy of the aluminum material, the emissivity, and the measured wavelength, the correct temperature is calculated through a special compensation calculation.
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