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Taking You Through the Research of Aluminum Profile Bending Processing

Cold Bending Aluminum

The process of aluminum profile bending has been widely used in the manufacturing of curved parts for aerospace, automotive, high-speed rail, and other applications. In civil applications such as aviation and high-speed rail, many structural components adopt profile frames. Therefore, research on bending technology is of great significance for improving the quality of bent parts and accelerating the localization process of bent parts.

The aluminum profile bending process can provide reasonable residual deformation allowances for parts, improve manufacturing accuracy, and reduce manufacturing costs. Bending refers to the forming process where profiles are pressed into the die groove under the combined action of bending moment and longitudinal tensile force. Aluminum profile bending is an important forming process in industrial production, used for manufacturing extruded profiles with large dimensions, high accuracy requirements, and large relative bending radii.

Introduction to the Processing Procedure

Aluminum Bending
  1. Incoming Inspection: Check the dimensions of the profile section, profile straightness, blank length, surface quality, and especially for surface defects as required.
  2. Milling and Cutting: For inverted T-shaped frames, the profile section needs milling and cutting before bending to ensure that the dimensions after bending meet the requirements. Milling and cutting are performed on gantry milling machines, with dimensions processed to nominal values +2mm.
  3. Pre-bending: Use bending dies and bending clamps on the bending machine to pre-bend the blank according to pre-forming requirements by controlling bending parameters (bending force, bending bend angle, etc.).
  4. Trimming: Check the flatness and angles of both surfaces to ensure that these values meet the requirements. For the R value, auxiliary trimming can be performed using a three-roll bending machine to achieve the predetermined shape.
  5. Post Pre-bending Inspection: Inspect the flatness, angles, and width of the cross-section of both surfaces to meet the requirements, ensuring that the R1000mm value achieves the predetermined shape.
  6. Transportation and Storage after Quenching: To ensure the new quenched state of the aluminum alloy material, the parts need to be stored at a temperature below -10°C after quenching before forming. After heat treatment, they are first placed in a cold storage room for storage. During transportation, refrigerated trucks with temperatures below -10°C are used.
  7. Re-bending: Use bending dies and bending clamps on the bending machine to re-bend the semi-finished products to meet the final requirements. During re-bending, selective edge pulling and trimming are performed according to the specific conditions of different parts to achieve the ideal shape and size.
  8. Final Trimming: Use auxiliary tools such as hammers on the correction platform for trimming. If necessary, use the correction inspection mold for knocking and repairing.
  9. Inspection: Inspect using inspection molds with calipers and micrometers to ensure compliance with customer technical requirements and drawing requirements.
  10. Metalworking: Use polishing tools such as Scotch-Brite to trim and clean the surface, mark the parts and test pieces to ensure traceability.