The invention relates to a method for producing a torsional vibration
damper housing, especially the housing for a viscosity torsional
vibration damper, whereby the damper housing is manufactured from an
existing plate circular blank and the shaping of the damper housing
occurs in an impact extrusion machine during a non-cutting impact
extrusion shaping method. In successive impact extrusion shaping steps,
all parts of the damper housing protruding from the plane of the plate
circular blank, which forms the housing rear wall, are impact extruded
while reducing the wall thickness of said parts to form a one-piece
damper housing. Said damper housing is structured such that the area of
the fastening flange has the largest thickness.