Method for laser deep penetration-brazing connection of dissimilar material

The invention relates to a method for laser deep penetration-brazing connection of a dissimilar material. The method comprises the steps that a laser welding head, a high-pressure gas column nozzle and a protective gas spray pipe can move relative to a base material, when the backside temperature of...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ZHU BIN, ZHANG MINGJUN, XIE ZHIZHOU, LI JINYU
Format: Patent
Sprache:chi ; eng
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Beschreibung
Zusammenfassung:The invention relates to a method for laser deep penetration-brazing connection of a dissimilar material. The method comprises the steps that a laser welding head, a high-pressure gas column nozzle and a protective gas spray pipe can move relative to a base material, when the backside temperature of the base material reaches or exceeds the gasification temperature value of the base material, the laser welding head and the high-pressure gas column nozzle are rotated, the laser welding head is made to incline relative to the upper surface of a workpiece, the high-pressure gas column nozzle is vertically aligned with the upper surface of the workpiece, a high-pressure gas column nozzle gas supply valve is controlled, and an inert gas column sprayed by the high-pressure gas column nozzle penetrates a small welding hole. According to the method for laser deep penetration-brazing connection of the dissimilar material, the high-pressure tiny gas column is used for assisting in maintaining the small hole, uniform dis