Loading patent…
AssigneeJfe Steel Corporation
InventorsNaoaki Munemura, Yasuaki Okita, Hiroshi Matsuda, Yoshiaki Murakami
Estimating the term…
In performing friction element welding of a sheet set constituted by two or more metal sheets, an element is press penetrated into the sheet set. The element may include a round columnar mandrel; a disc-shaped collar provided at an upper end face of the mandrel; and a conical pin extending from a lower end face of the mandrel. The element has a plurality of fluidized-metal discharge grooves arranged spirally in a flat area of the lower end face of the mandrel, the flat area excluding the pin. Alternatively, the element may include a round columnar mandrel having a lower end face that forms a conical face with an apical angle αm, the conical face having one or more pairs of chippings discharge grooves or having a plurality of cutting edges, the chippings discharge grooves each extending in a curved manner from an apex of the conical face.
An element to be used in friction element welding of a sheet set obtained by stacking two or more metal sheets, the friction element welding being performed by press penetrating the element into the sheet set while rotating the element, the element comprising:
Dependencies are inferred from the claim text.