Gkn Driveline International Gmbh

Frank Reher

Hans-Heinrich Welschof

Wolfgang Hildebrandt

Joachim Wette

Jisheng E

Bernd Bender

Mario Witzdam

Thorsten Stresewski

Stefanie Rosenkranz

Jörg Berlingen

Bernd Falk

Lothar Gasper

Bellows, for example, a roll bellows and a folding bellows, can be produced that can be used at higher temperatures such as those prevailing in modern articulated constructions, using a mixture comprising at least one thermoplastic elastomer selected from the group of copolysters with a hard segment and a soft segment, wherein in a first step the at least one thermoplastic elastomer is mixed with approximately 0.8 wt. % to approximately 5 wt. % triallyl isocyanurate, based on the total amount of the mixture; in a second step the bellows is produced; and in a third step, the bellows is exposed to an ionizing irradiation in a range from approximately 140 kGy to approximately 350 kGy.

Producing a bellows

The disclosure relates to an improved grease composition for use in constant velocity joints, especially ball joints and/or tripod joints used in the drivelines of motor vehicles, with the grease composition comprising at least one base oil, at least one simple or complex soap thickener, at least one zinc sulphonate, at least one molybdenum dithiocarbamate in the solid state, and at least one molybdenum dithiophosphate.

Grease composition for constant velocity joints

An articulated structural part includes a peripheral zone. The peripheral zone includes a surface, an outermost layer situated immediately adjacent the surface, a further layer situated adjacent the outermost layer and a core situated adjacent the further layer, wherein the outermost layer is substantially martensite. The further layer includes a varying mixture of martensite and of ferrite or perlite. The core is substantially ferrite or perlite. A process for producing an articulated structural part is also provided.

Process for the production of an articulated structural part having improved wear resistance

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Siegburg, Germany

Frank Reher