LASER-WELDED ALUMINUM ALLOY PARTS AND METHOD FOR MANUFACTURING THE SAME

摘要

A method of welding difficult to weld aluminum alloys using a laser welding device with at least 4 kilowatts of power operable at a speed of from about 40 millimeters per second to about 160 millimeters per second with a spot size of about 250 to about 600 microns focused at the surface of the aluminum pieces, without the need for shielding gas or filler wire, and the parts made thereby which are of suitable strength and properties to use as lightweight reinforcement structures, particularly in vehicle interior structures.