Study On Forming Of Extrusion For Aluminium Alloy Complex Cylinder Stents Technology

Aluminum alloy cylinder stents as an important structure for aircraft parts, its structure iscomplex, high performance requirements, and the domestic generally USES the traditionalprocessing method of cutting, which low material utilization ratio, high production costs,higher energy consume, mechanical performance is poor. This paper put forward theisothermal extrusion forming technology of lateral loading, to replace the traditional cuttingprocess, in order to achieve greatly improve material utilization and the purpose of theperformance of products.On the basis of the extrusion principle, we take a deeper research, analyzes the differentextrusion temperature and extrusion speed and friction factors of the metal deformation howto influence the law of the load, to provide a forming technology reference for aluminumalloy cylinder stents make-technology. This paper take three dimensional numericalsimulation DEFORM as the platform, the extrusion simulation process is analysied, and maderational process program: Firstly, The blanking; Secondly, the blank is backward extrusion tocylinder; thirdly, the final part was made though the lateral loading extrusion forming ; Fourth,Cold reshaping. And to further optimized the specific process parameters: The extrusiontemperature is 430℃, and extrusion speed is 10 mm/s.On the basis of the research, the mould was designed and optimized,and the experimentalresearch was carried out.The result showed that: formulation process scheme was feasible, designed mould wasappropriately applied,metal flow was uniform,the material utilization rate increased from 40%to 75%,and the economic benefits was high,which laid the foundation for engineeringapplications of the similar parts.