Paper Title:
Research on Weldability for Dual-Phase Steels Using Servo Gun Spot Welding System
  Abstract

Dual-phase steel is a mixture of ferrite matrix and martensitic islands distributed at grain boundaries with the possible addition of bainite. Its formability, capacity to absorb crash energy, and ability to resist fatigue make it a desirable material for use in the automotive industry to enhance automobile’s strength and reduce its weight. However, the resistance spot weldability of dual-phase steel is sometimes limited by a propensity for weld metal failure due to the welding process. To improve its weldability, a servo gun spot welding system is introduced to control electrode force during the welding process. The paper take 1.5mm DP600 steels as an example, experimental data shows that by optimizing electrode force during welding process, the width of weld lobe can be enlarged from 0.9kA to 2.1kA and the weldability of dual phase steel is improved greatly.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
1597-1600
DOI
10.4028/www.scientific.net/KEM.353-358.1597
Citation
X. Y. Zhang, Y. S. Zhang, G. L. Chen, "Research on Weldability for Dual-Phase Steels Using Servo Gun Spot Welding System", Key Engineering Materials, Vols. 353-358, pp. 1597-1600, 2007
Online since
September 2007
Export
Price
$32.00
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