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The increasing use of hot-formed steels for structural components in lightweight construction requires solutions to create mounting points into the thin blank of high-strength steel. Compared to welding nuts, self-piercing nuts are often used due to advantages for the mechanical properties. The problems of setting these elements in hot-formed steels like 22MnB5 are high process forces and often limited...
This paper presents a study on the influence of pre-pulse process by spot weld bonding of asymmetric three-sheet steel stack-ups. Two types of stack-ups were examined, consisting a combination of low carbon steel (DX51—1.0226) and ultra-high-strength steel (22MnB5—1.5528). Weld bonding of asymmetric stack-ups results in particular challenges. By using standard parameters, the effective welding current...
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