A process for manufacturing a light-alloy hybrid wheel implements the following separate operation phases: making a flange with an internal profile capable of constituting a tire bead seat; making a rim with, on one side, an outer profile capable of constituting a tire bead seat and, on the other side, a circular flank for assembly with a part of the flange; assembling the flange with the rim, at the seat of said flange and the circular flank of the rim. The rim is made according to the following consecutive operations: an operation of manufacturing a circular flank; then an operation of expanding said circular flank to the size of the final rim in a single step; then an operation of cold or hot flospinning of said circular flank so as to obtain the rim in the final shape and profile thereof, comprising a shoulder only on the side that will not be welded to the flange.

A manufacturing method and structure of a carbon fiber rim is revealed. A metal strip is formed by heating a metal substrate to a moldable temperature and then extruded molding. The metal strip comprises two side walls, a connecting wall and an inner rim wall to form a space surrounded by the side walls, the connecting wall, and the inner rim wall. Next, two terminals of the strip are connected to form a circle as a rim frame's embryo. The two side walls, or the two side walls and the inner rim wall of the rim frame's embryo are milled to form plural through holes and become a rim frame. Afterwards, the surface of the rim frame is roughened and covered with a trimmed carbon fiber cloth having a predetermined shape. After heatsetting and surface treating, a carbon fiber rim having a light weight and a strong structure is obtained.

A tire rim structure including an annular inner ring (2) provided on the inner ring of a tire body (1) and a circular outer ring (3) provided on the outside of the tire body (1), fixedly connected to the annular inner ring (2), and formed by stamping. The annular inner ring (2) includes an annular inner ring body (21) formed by extrusion, an annular left ring (22) provided at one side of the annular inner ring body (21) and formed by extrusion, and an annular right ring (23) provided at the other side of the annular inner ring body (21), connected to the circular outer ring (3), and formed by extrusion. A shaft hole (31) is provided at the middle part of the circular outer ring (3). By breaking down a tire rim into the annular inner ring body (21), the left ring (22), the right ring (23), and the outer ring (3) connected to the right ring, each of the components composing the tire rim can be processed and formed via extrusion or stamping processes, this provides increased consistency compared with an existing tire rim that is integrally processed and formed via a casting process, thus allowing for increased structural strength and simplified manufacturing process.

A manufacturing method and structure of a carbon fiber rim is revealed. A metal strip is formed by heating a metal substrate to a moldable temperature and then extruded molding. The metal strip comprises two side walls, a connecting wall and an inner rim wall to form a space surrounded by the side walls, the connecting wall, and the inner rim wall. Next, two terminals of the strip are connected to form a circle as a rim frame's embryo. The two side walls, or the two side walls and the inner rim wall of the rim frame's embryo are milled to form plural through holes and become a rim frame. Afterwards, the surface of the rim frame is roughened and covered with a trimmed carbon fiber cloth having a predetermined shape. After heatsetting and surface treating, a carbon fiber rim having a light weight and a strong structure is obtained.