Method of manufacturing an automotive wheel

摘要

An outer rim molded material is molded by forging or casting, a portion of the outer rim which extends from a hump to a bead seat is separated from part of a rim flange precursor and is caused to fall in a sloping fashion inwards of a wheel width so as to form a bead seat precursor, and the bead seat precursor so formed is then joined to be welded to a top or side of a rim well rising portion precursor. An external surface is cut to be finished to a proper shape, and an annular hollow portion is formed underneath a lower surface of the bead seat portion.

主权项

1. A method for manufacturing an integrated light alloy automotive wheel having a center disc portion and outer and inner rim portions, comprising forming a slope portion rising radially outwards from a rim well, forming a bead seat portion joined to the slope portion, joining an annular patch to the slope portion and the outer rim portion, whereby an annular hollow portion is formed that is enclosed by the bead seat portion, the outer rim portion, and the slope portion.