Study on the push-bending forming process of 5A02-O aluminum alloy tube

In order to study the influence of process parameters on the quality of 5A02 aluminum alloy push-bending tube, this paper establishes a 1D bending radius FEM of 5A02-Φ75mm×t1.5mm tube based on the ABAQUS/Explicit platform, by comparing the lengths of the straight segments at both ends of the verification specimen with those of the simulated specimen, the FEM has been validated, demonstrating its accuracy and reliability. Based on the established FEM, the virtual orthogonal experiments was carried out, and the three process parameters of the gap between the mold and the tube, the pushing pressure, and The coefficient of friction between the mold and the tube were studied, and the variation law of the outer wall thickness, inner wall thickness and section ovality at the typical position was analyzed, and the optimal process parameters were obtained as the gap between the mold and the tube was 0.1mm, the pushing pressure was 20MPa, The coefficient of friction between the mold and the tube is 0.1, and finally, based on the optimal process parameters obtained by finite element simulation, the manufacturing of the test piece is completed, and the reliability of the process parameters is verified by measuring and analyzing the length of the straight section at both ends of the test piece, the ovality of the typical position, the outer wall thickness of the typical position, the inner wall thickness of the typical position.