Browse > Article
http://dx.doi.org/10.7735/ksmte.2014.23.5.525

A Study on Laser Welding Application of the Cowl Cross Member for Ultra-High Strength Steel  

Park, Dong Hwan (Gyeongbuk Hybrid Technology Institute)
Yun, Jae Jung (Gyeongbuk Hybrid Technology Institute)
Kim, Kun Young (Sewon R&D Center)
Publication Information
Journal of the Korean Society of Manufacturing Technology Engineers / v.23, no.5, 2014 , pp. 525-531 More about this Journal
Abstract
A cowl cross is a part of the car's instrument panel used to maintain the rigidity of the vehicle body side. The application of laser welding has the benefits of speed and thermal deformation compared to arc welding. An ultra-high strength steel sheet is used to reduce the weight of the vehicle body parts. Generally, formability of such a steel sheet is poor because its elongation is very low. For this reason, a method for cold forming of an ultra-high strength steel sheet is required. This paper describes how to improve the formability and weldability of the ultra-high strength steel sheet. Mechanical tests of this material were also performed to evaluate the welding properties of $CO_2$ (GMAW) and those of laser welding.
Keywords
High strength steel; Cowl cross; Laser welding; Scanner; Forming die;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Kim, D. H., 2012, A Study on the Monitoring of Laser Welding for S45C Steel Sheets Using Nd:YAG Laser with Continuous Waves, Journal of the Korean Society of Manufacturing Technology Engineers 21:5 814-823.   과학기술학회마을   DOI
2 Oh, K. M., 2006, The 3-Layer Laser Welding Method of Zinc Coated Steel for Car Body, KSAE06-W0022, 14-16.
3 Yoo, Y. T., 2008, T-Joint Welding of Automobile Sheet Metal Using a High Power Fiber Laser, KSAE08-H0008, 47-51.
4 Choi, W. H., 2007, Development of Auto-Body Design Technology and Welding Jig for Laser Remote Welding Application, KSAE07-G0009, 62-67.
5 Song, M. J., 2010, Laser Welding Properties of 980MPa Class High Strength Steel Sheets using Disk Laser for Car Body, KSAE10-A0491, 2772-2776.
6 Hideyuki, 2003, Springback Simulation of Automotive Body Panel in Multi-Operation Stamping Process Using Static-Explicit FEM Code, JSAE Annual Congress 13 13-16.
7 Lee, K. R., 2013, The Porosity Control Technology of Lap Joint Welding Using Continuous Wave Nd:YAG Laser of the Low Carbon Steel SS41, Journal of the Korean Society of Manufacturing Technology Engineers 22:4 665-672.   과학기술학회마을   DOI