en.Wedoany.com Reported - When joining dissimilar materials with varying thicknesses and differing electrothermal properties, weldability, repeatability, and joint quality are often difficult to ensure. Particularly in multi-layer joints using thin-walled high-strength and ultra-high-strength steels, uneven distribution of material and contact resistance makes achieving reliable bonding in thin outer layers a process challenge. Relying solely on experimental data (such as the SEP 1220-2 specification) to determine welding parameters for such combinations is both time-consuming and material-intensive.

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