汽车一体化压铸与钢铝混合结构优劣对比及适用场景分析

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中图分类号：TG249.2；U466 文献标志码：B DOI:10.19710/J.cnki.1003-8817.20250115

Comparative Analysis of Advantages, Disadvantages, and Application Scenarios between Automotive Integrated Die-Casting and SteelAluminum Hybrid Structures

Tian Jianying, Guo Dongdong, Zhang Ruiyan (Beijing Benz Automotive Co.,Ltd.,Beijing 100176)

Abstract：To systematically compare the application characteristics of integrateddie casting and stee-aluminum hybrid structures in BIW lightweighting，acomprehensivestudy is conducted from multiple dimensions,including lightweighting efect,productioncost,maintenanceeconomy,and sustainabilitythrough technical principleanalysis, economicevaluation,and comparison of typical cases.The results show that integrated diecasting canachieve a relativelyhigh weightreductionrateandissuitable forlarge-scalemid-to-high-end new energyvehicle models,buit faces chalenges suchashighequipmentinvestment,highmaintenancecosts,andslowimprovementinyieldrate.The steel-aluminum hybridstructure,ontheotherhand,performsbeterintermsofcostcontrol,maintenanceconvenience, andmaturityof material recycling,and is more suitableforcost-sensitivevehicle modelsandmulti-material co一 productionscenarios.Theconclusion holds thattechnical selectionshould be basedon vehicle positioning，production and salesscale,anduser needs.In the future,theresearch focus should be placedonheat-treatment-free materials, intelligent processes,and control technologies to break through the current development botlenecks.

Keywords:Integrateddieasting,teel-aluminumhbridtructures,Lightweighting,NEVs,Cotefect

1前言

汽车转型的关键阶段，对整车能效提升提出了更高要求。（剩余6399字）