This article summarizes a paper entitled, "Higher than Expected Strengths from Dissimilar Configuration Advanced High-Strength Steel Spot Welds", by E. Biro, et al.B-6 This study shows that the cross tension strength (CTS) is always higher than the strength expected...
A variety of steel grades are used to manufacture vehicle body structures and closures. Welding dissimilar Advanced High-Strength Steels (AHSS) in three and four layer stack-ups requires special considerations. In this section of the Guidelines are articles...
This article is the summary of a paper entitled, "HAZ Softening of RSW of 3T Dissimilar Steel Stack-up", Y. Lu., et al.L-15 Electromechanical Model The study discusses the development of a 3D fully coupled thermo-electromechanical model for RSW of a three sheet (3T)...
Introduction Joint Performance Comparisons All Processes General Comparisons Cost Effectiveness Comparison: Spot Welding to Spot/Laser Welding Mixture GMAW Compared to Laser Welding Introduction A solution to improve the spot weld strength is to add a HS adhesive to...
Examples of mechanical joining in automotive manufacturing are clinching and self-piercing riveting. The process steps and typical equipment for both processes are shown in Figure 1. A simple round punch presses the materials to be joined into the die cavity. As the...
Gas Metal Arc Welding: Introduction GMAW Procedures and Properties Gas Metal Arc Welding: Introduction Gas Metal Arc Welding (GMAW) (Figure 1), commonly referred to by its slang name “MIG” (metal inert gas welding) uses a continuously fed bare wire electrode through a...
The word “laser” is an acronym for “light amplification by stimulated emission of radiation.” Lasers produce a special form of light (electromagnetic energy) consisting of photons that are all of a single coherent wavelength. Light of this form can be focused to...
Fundamentals and Principles of High Energy Density Welding High energy density welding processes are those that focus the energy needed for welding to an extremely small size area. This allows for very low overall heat input to the workpiece, which results in minimal...
Butt Welds and Tailor-Welded Products Assembly Laser Welding Remote Laser Welding Body-in-White (BIW) Joining Hybrid Laser and GMAW Welding Butt Welds and Tailor-Welded Products AHSS grades can be laser butt-welded and are used in production of tailored...
As with mild steels, AHSS-hybrid joints can be made by combining adhesive bonding with RSW, clinching, or self-piercing riveting. These hybrid joints result in higher strength values (static, fatigue, and crash) than the spot welding alone (Figure 1). If local...