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Henan Industrial Material Custom Manufacturer: How to perform tensile testing on engineering building aluminum profiles
Release Time:
2022-09-28
Henan industrial material custom manufacturer talks about how to stretch engineering building aluminum profiles 1. Check whether the hydraulic system is leaking oil and whether the standard air pressure is correct. 2. Check whether the conveyor belt, roller track, and placement platform are damaged or scratched. 3. Before stretching the engineering building aluminum profile, determine the length of the aluminum profile, then pre-determine the stretching speed, and determine the stretching length, which is actually the movement of the main hydraulic chuck. 4. Determine the clamping method according to the shape of the aluminum profile. For large cross-section hollow aluminum profiles, they can be inserted into the stretching pad, but try to maintain sufficient clamping area. 5. When the aluminum profile is cooled to around 50 yuan, gradually stretch the aluminum profile. 6. When the aluminum profile is bent and warped at the same time, correct the warping first, then bend it. 7. Test pull first to determine whether the determined stretching speed and clamping method are suitable. 8. When the normal stretching rate, bending, warping, or structural dimensions cannot meet the standards, the extrusion should be stopped immediately. 9. The aluminum profiles on the cooling table cannot rub, impact, or overlap each other to avoid scratches. Henan industrial material custom manufacturer: The following matters need attention during the stretching operation of engineering building aluminum profiles 1. Only when the engineering building aluminum profile is cooled to 5
Henan Industrial Materials Custom Manufacturer Let's talk about how to stretch engineering building aluminum profiles
1. Check if the hydraulic system is leaking and if the standard air pressure is correct.
2. Check if the conveyor belt, roller track, and placement platform are damaged or scratched.
3. Before stretching the engineering building aluminum profile, determine the length of the aluminum profile, then pre-determine the stretching speed, and clarify the stretching length, which is actually the movement of the main hydraulic chuck.
4. Determine the clamping method according to the shape of the aluminum profile. For large cross-section hollow aluminum profiles, stretching pads can be inserted, but sufficient clamping area should be maintained as much as possible.
5. When the aluminum profile cools down to around 50 yuan, gradually stretch the aluminum profile.
6. When the aluminum profile is bent and warped at the same time, correct the warping first, then bend it.
7. Perform a test pull to determine if the set stretching speed and clamping method are suitable.
8. If the normal stretching rate, bending, warping, or structural dimensions cannot meet the standards, the extrusion should be stopped immediately.
9. The aluminum profiles on the cooling table should not rub, impact, or overlap each other to avoid scratches.
Henan Industrial Materials Custom Manufacturer The following are the precautions for the stretching operation of engineering building aluminum profiles:
1. Stretching on the stretching rack can only be carried out when the engineering building aluminum profile is cooled to 50 degrees. If the temperature is too high, stretching will not only burn the body, but also the jacket. Moreover, due to the inability to solve the thermal stress of the aluminum profile, there will be aging bumps, warping, poor function, and other waste.
2. The stretching amount of the engineering building aluminum profile is kept at around 1%. It should also be noted that if the stretching is excessive, there will be scale deviations at the head, middle, and tail, and the appearance will have very thin spiral (fish scale) marks, low tensile strength, high hardness, and high ductility (low plasticity). Too low stretching amount will make the tensile strength and strength of the aluminum profile slightly lower, and even aging (heat treatment) cannot improve the hardness, and the aluminum profile is easily bent and bumpy.
3. In order to control the dimensional changes of the entire engineering building aluminum profile during stretching deformation, suitable clamping pads and methods must be selected. This is especially important for open-mouth materials, arc-shaped materials, overhanging materials, and serrated contours, and more attention should be paid to the effective and beneficial use of stretching clamping pads.
4. Pay attention to the stress conditions of the feet, fine teeth, long legs, curved surfaces, slopes, openings, and focal points. For aluminum profiles with large width-to-thickness ratio, long overhanging walls, large inclination, large thickness difference, and peculiar shapes, prevent partial or point limit deformation, warping, spiral, and other defects of the aluminum profile.
5. Because there is heat insulation above, aluminum profiles with high requirements for decorative appearance should be rolled left and right, back and forth, to facilitate uniform heat dissipation and reduce horizontal highlights caused by uneven heat dissipation and different grain sizes, especially for aluminum profiles with large width and thickness. Pay more attention.
6. During the loading, moving, and stretching stages, they should not rub, pull, accumulate, block, or wrap around each other, and a certain distance should be left between them. For aluminum profiles that are easily bumpy and have a long feeding length, proper handling should be done, and maintenance and processing should be carried out if necessary.
The editor of Henan Industrial Materials Custom Manufacturer will not explain too much today. If you need aluminum profile procurement and processing services, you can consult our Henan Industrial Materials Custom Manufacturer.
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