Patent ID: 6076725
Filing Date: 2000-06-20
Classification: B23K

Abstract:
A method of fabricating a welded structure, comprising the steps of:providing first and second aluminum or aluminum alloy elements having substantially square sections with substantially the same wall thickness, the first and second elements having rounded corners such that circumferential wall thicknesses of each of said square thicknesses is uniform, wherein an angle between an end face of the first substantially square section element and an axis thereof is substantially equal to an angle between an end face of the second substantially square section element and an axis thereof;arranging the end faces of said first and second elements in abutment with each other so as to form a circumferential boundary between the abutted first and second elements, said angle between the end face of the first substantially square section element and the axis thereof, and the angle between the end face of the second substantially square section element and the axis thereof being selected such that said first and second elements form an acute angle part at a circumferential portion of the boundary;chamfering at least one of said first and second elements at said acute angle part to form a plane part perpendicular to the end faces of said first and second elements as viewed in a section passing through said axes; andwelding said first and second elements together at said circumferential boundary.