Abstract:
The invention relates to a method for manufacturing components from critical cold forming of light metal strip, preferably naturally hard Al alloys of the AlMg or AlMg—Mn types, in which the desired component is manufactured from the strip by at least one cold forming step and the plasticity is improved before the cold forming by means of a soft annealing. According to the invention, it is proposed that the region of the longitudinal edges of the cold-slit strips is heated in a depth in the strip width of at least 1 mm to a maximum of 10 mm in such a way that a temperature of over 150° C. is reached over a time span of more than 0.1 seconds to a maximum of 10 seconds.
Abstract:
A welded vehicle wheel includes a center or wheel disc and a rim. The center has a side wall area at an outermost circumference of the wheel disc having an increasing diameter toward an inner side of the welded vehicle wheel. A substantially axially disposed circumferential portion is connected to the inner end of the side wall area. The rim includes a bed region with a decreasing diameter toward the outer side of the welded vehicle wheel. In the assembled state, the rim is connected to the center by a press fit between the outer side of the circumferential portion and the bed region and by a welded seam between the free-end of the circumferential portion and the bed region. The press fit and welded seam form a space therebetween that is circumferentially continuous and expands in cross-section toward the inner side of the welded vehicle wheel.
Abstract:
Method and apparatus for removing an edge fin produced on a workpiece surface during the production of metal rim reinforcement strips. The edge fin is removed after the rim is clamped in the longitudinal direction by cutting a lateral incision into the edge fin along the longitudinal direction just above the workpiece surface. The cutting tool may be stationary blades or roll blades, the latter blades cooperating with a support for the edge fin during lateral cutting.