新能源汽车用高强韧6061铝型材的生产工艺研究

打开文本图片集

中图分类号：TG146.21 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250111

Abstract：Inorder to meet the lightweight and safety requirements of new energyvehicles，this paper studies the production processof 6O61 aluminum profile with high strength and toughness for new energyvehicles，including aly chemicalcomposition，melting，castingandhomogenizationof aluminum bars，extrusion，aging，microstructure and mechanical propertiesofaluminumprofiles.Theresultsshowthatonthe basisofoptimizing thecompositionof aluminumalloy，thepurificationof aluminumalloyliquidisimproved byfurnaceinjectionrefiningandonline degasing andfiltrationoutside the furnace.Thealuminum profilewith fineanduniformgrains isobtainedby controllingrecrystallzation.Theuniformityandstabilityofmicrostructureandpropertiesofaluminumprofilesare improvedbyisothermal extrusion.Theaverage tensilestrengthof thealuminum profileis343.6MPa，theaverageyield strength is 304.3MPa ，and the average elongation is 15.9%

Keywords：Newenergyvehicles，6O61aluminumalloy，Aluminumprofile，Extrusion

1前言

汽车轻量化是在保证车身强度和安全性的前提下，降低车身质量，提高汽车的动力性能，达到节能减排效果]。（剩余6172字）