Problems that should be paid attention to in the design of aluminum profile section

by:Zeyi     2021-07-08
The cross-sections of aluminum profiles are bizarre, especially the customized aluminum profiles, which can be designed according to the needs of customers. However, not any whimsical shape can be customized. Aluminum profile cross-section design also has certain requirements. The editor will talk to everyone about the issues that should be paid attention to in aluminum profile cross-section design:    1. Reasonable extrusion ratio, extrusion ratio is extrusion Divide the area of u200bu200bthe cylinder by the cross-sectional area of u200bu200bthe profile. The squeeze ratio is generally controlled between 20-50.  2. The wall thickness of the profile should be reasonable, and the extrusion qualification rate of the aluminum profile with uniform wall thickness is higher.  3. Avoid sharp changes in the wall thickness of the profile or excessive use of rounded corners.  4. The aspect ratio of trough aluminum profile should be reasonable.  5, C-shaped opening profile should pay attention to the ratio of opening size and closed size.  6. u200bu200bAvoid large-size flat structure, and add stiffeners when necessary.
The main factors causing cracks in aluminum profiles
The main factors of aluminum profile cracks:   1, the extrusion temperature of aluminum profile is too high, the tensile strength of the metal surface decreases, and cracks occur under the action of friction;   2, the metal surface is subject to additional tensile stress due to friction When the additional tensile stress is greater than the tensile strength of the surface metal, cracks will occur;    3. When the extrusion speed of the aluminum profile is too fast, the additional tensile stress on the surface of the metal will increase, causing the profile to crack.   Solution: Strictly control aluminum extrusion process parameters to ensure reasonable exit speed and exit temperature.
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