Laser dimpling and remote welding of zinc-coated steels for automotive applications

Abstract

"The flexibility in terms of beam shapebility and\ud amplitude in the range of process parameters offered by the\ud emerging high power and quality active fiber lasers can be\ud advantageously used in overcoming the well-known problems\ud in remote laser welding of zinc-coated steel components in the\ud car mass production. The paper explores the potentiality offered\ud by the combination of the scanner technology with high\ud brilliance fiber lasers when laser dimpling and remote welding\ud are executed in a successive order: the first one to realize gap\ud spacers and the second one to weld together clamped sheets in\ud zinc-coated steels. In particular, the substitution of the traditional\ud mechanical dimpling with the laser dimpling is investigated\ud in order to highlight the potentiality of a solution that is\ud flexible, unaffected by tool wear and highly productive.

Selective laser melting of pure Zn with high density for biodegradable implant manufacturing

“…Literature on SLM of low melting point materials in general and of Zn in particular is scarce. However, the laser welding of Zn-plated steels has been studied extensively in literature [36][37][38][39][40]. Porosity formation in laser welding has mainly been linked to the entrapment of Zn vapour in the keyhole.…”

Fiber Laser Based Single Pulse Drilling for Production of Perforated Ti-tanium Sheets for HLFC Structures

“…The main two joint configurations (i.e. joint geometries) for RLW in representative top-hat assembly applications are conventional overlap and fillet edge joints, as shown in When joining with RLW process, the fillet edge joint has several advantages over conventional overlap joints including lightweight structure construction due to reduced DOI: 10.2961/jlmn.2019.01.0001 flange size, improved quality in terms of fewer pores and less spatter, improved zinc degassing for zinc-coated steel, less fixturing required for part positioning, and removal of the dimpling process required to create part-to-part gap for zinc coated steel [13][14][15]. These additional benefits from fillet edge weld make it preferred joint configuration for lightweight applications.…”

Early Stage Material Motion and Transient Optical Properties of Metals after Ultrashort Laser Pulse Irradiation

“…joint geometries) for RLW in representative top-hat assembly applications are conventional overlap and fillet edge joints, as shown in Fig. When joining with RLW process, the fillet edge joint has several advantages over conventional overlap joints including lightweight structure construction due to reduced DOI: 10.2961/jlmn.2019.01.0001 flange size, improved quality in terms of fewer pores and less spatter, improved zinc degassing for zinc-coated steel, less fixturing required for part positioning, and removal of the dimpling process required to create part-to-part gap for zinc coated steel [13][14][15]. These additional benefits from fillet edge weld make it preferred joint configuration for lightweight applications.…”