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http://dx.doi.org/10.7467/KSAE.2012.20.4.052

Front Aluminum Subframe of High Level Vacuum Die-casting  

Cho, Young-Gun (Platform Development 2 Team, Hyundai-motor Company)
Lim, Tae-Seong (Metallic Materials Research Team, Hyundai-motor Company)
Jang, Sang-Gil (Advanced Engineering Team in Advanced Research, Donghee Industrial Co.)
Cho, Cheol-Hwan (CAE Team, Donghee Industrial Co.)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.20, no.4, 2012 , pp. 52-59 More about this Journal
Abstract
The subframe has been generally manufactured by using stamped steel material. Recently, automotive designers are considering aluminum as lightweight material. This paper describes the development process of an aluminum subframe which is made by high level vacuum die casting process, which is beneficial for minimizing gas contents and material properties. The weight of manufactured subframe is reduced by 4kg with the comparison of steel subframe. The aluminum subframe is packaged for the current vehicle layout and the imposed requirement is to attain a better structural performance that is evaluated in terms of mounting stiffness, noise and vibration, and endurance performance. The NVH evaluation results show that sound level is decreased by 8dB with the help of high roll-rod mounting stiffness as well as high structural modes.
Keywords
High level vacuum die-casting; Aluminum subframe; Rib; Sound level; Roll rod;
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  • Reference
1 D. Triantos and M. Michaels, "Design and Fabrication of an Aluminum Engine Crandle for a General Motors Vehicle," SAE 1999-01-0659, 1999.
2 A. Mikuni, O. Itagaki and M. Suzuki, "Development of Aluminum Vacuum Die Cast Sub-frame," JSAE Autumn Conference, JSAE, 20045658, 2004.
3 T. Gakamoto, K. Kira and H. Kambe, "Development of Automotive Suspension Part by High Vacuum Die Casting," Journal of Japan Foundry Engineering Society, Vol.76, No.4, pp.283-288, 2004.
4 M. Tashiro, K. Kudoh, Y. Konno and K. Takagi, "Development of Nissan Innovative Casting System for Aluminum Casting Suspension Parts," Nissan Technical Review, No.49, 2001.
5 A. Mikuni, O. Itagaki and M. Suzuki, "Development of Aluminum Vacuum Die Cast Sub-frame," JSAE Annual Congress, JSAE, No.81-04, 2004.
6 G.-M. Yoon, D.-H. Kang, Y.-J. Ko and J.-D. Lim, "Application of High Level Vacuum Die-casting for the Automotive Parts," Annual Conference Proceedings, KSAE, pp.1540-1546, 2009.
7 S.-Y. Park, D.-C. Park, K.-S. Yoon and M.-S. Lee, "A Study of Front Subframe System Optimization for Improving Vehicle NVH Performance," SAE 2009-01-2097, 2009.
8 M.-S. Kim, T.-S. Li, K.-M. Yoon, Y.-J. Ko, J.-M. Kim and K.-H. Kwak, "Development of Cast-forged Knuckle Using High Strength Aluminum Alloy," Spring Conference Proceedings, KSAE, pp.1048-1055, 2010.