Abb Daimler-benz Transportation

Wolfgang Sch&auml;hl

Peter Weichelt

A process for joining components and assembly units of rail-borne vehicles by bonding is described, in which the use of an adhesive, which produces fatigue strength but cures more slowly, is combined with the use of an adhesive that ensures sufficient strength for handling in a short time, wherein complicated design of the bonded joints as well as the need for a large amount of devices are to be avoided, manufacturing tolerances are to be equalized, and defined minimum bonded gap widths are to be maintained. Furthermore, the wetting by the adhesive shall be limited to selected joining surfaces, without having to remove and dispose of the edge limitation. This object is accomplished by applying a quick-bonding first adhesive layer having an intrinsic dimensional stability to first joining surfaces and a more slowly curing second adhesive layer to second joining surfaces and by joining the components before or after the application of the second adhesive layer, wherein the first adhesive layer rapidly ensures sufficient strength for handling and maintains a predetermining joining space, while the second adhesive layer fills out the joining space set and ensures fatigue strength after its curing. The adhesive used for the first adhesive layer is also used as a permanent edge limitation.

Growing community of inventors

Hennigsdorf, Germany

Wolfgang Schähl

Growing community of inventors

Hennigsdorf, Germany

Wolfgang Sch&auml;hl

Wolfgang Schähl