ã€China Aluminum Network】 wearing strip heat insulation aluminum profile is the two pre-extruded aluminum and insulation strip manufacturers to provide insulation strips, through the composite processing of the three into one composite profile. Therefore, in addition to the quality of the material itself, the technological level of the combined processing is an important factor in determining the quality of the insulation profile. In general, the combination process is accomplished through special equipment, including four processes: toothing, threading, rolling, and inspection.
Rely on: The open tooth is a process that is particularly critical through the hard roller gear installed on the gear machine to roll out the teeth in the neck of the slot used for the aluminum strip. The roller gear is rotated by the motor through the transmission mechanism, and the 60-degree tooth shape of the outer edge of the roller gear presses in the center of the aluminum slot and exerts a certain pressure to drive the aluminum material to move forward, and at the same time to roll along the pressed slot. Out of teeth. Rolling gears can be adjusted up, down, left, and right by rails to accommodate profiles of different heights and widths.
The second step is to put the insulation bar through the guide of the threader into the notch of the upper and lower two aluminum materials that have already opened the teeth, so that the three are connected together. Some equipment's stripping process is integrated in the gearing machine, that is, the heat insulation strip is penetrated into the aluminum material during the toothing process. There is no tight bond between the heat insulation strip and the aluminum material after wearing the strip, and it is loose, and the strip and the aluminum material can shake each other. The heat insulation strip is driven by a set of toothed wheels driven by the motor and penetrates into the slots of the upper and lower aluminum materials to complete the wear. For some aluminum materials with a distance of less than 10 mm from the center of the two slots, it is generally difficult to use the stripping machine to directly wear the strips. In this case, only manual manual stripping can be used.
The third step: Rolling and rolling is the combination of the aluminum material and the heat-insulated strips by the three sets of rolling plates of the profile that has been put through the roller press. During rolling, under the combined action of the two rolling plates, the outer hammers of the aluminum material are each pressed against the heat insulation strip with their neck roots as the center of rotation, and the open teeth on the hammer head are pressed into the heat insulation strips so that the aluminum material is Insulation bars are tightly integrated.
Step 4: Detection In addition to measuring the dimensional accuracy of aluminum after rolling, longitudinal shear strength is an important mechanical performance index. Longitudinal shear strength test is to install a 100mm long section specimen on a factory-specific longitudinal shear test machine. The heat insulation strip and aluminum are dislocated by the external force. The larger unit length load shown in the deformation is composite. Longitudinal shear strength of aluminum material in N/mm. GB5237.6 "aluminum alloy construction profiles - Part 6: Insulation profiles" provides that the longitudinal strength of the heat insulation aluminum test features should be greater than 24N/mm, the calculation of the characteristic values ​​need to take a group of 10 test values, seeking After the mean and standard deviation, the mean value is subtracted by 2.02 times the standard deviation. Therefore, the stability of a group of test values ​​is particularly important in the case of ensuring that the test values ​​of individual samples meet the requirements. The stability of the sample is closely related to the stability of the equipment and the stability of the aluminum material.
OVERVIEW
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