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Synchronizer hubs

Fraunhofer-Inst.f.Structural Durabilty (LBF) MIBA Sintermetall Gmbh
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Synchronizer hubs
Benefit: Cost Saving, Improved Performance, Increased Component Complexity
Main Forming Process: Conventional Processing
End Use Sector: Automotive
Material: Ferrous

Finishing: Heat treatment: Rapid Cooling


Its the first time in powder metallurgy that a high loaded heavy duty part was designed against variable amplitude fatigue based on service load measurements in a gear box. The required high structural durability for at least 300.000 km was achieved by substituting the conventional double pressing and sintering process by warm compaction and using an environmental friendly, nickel-free alloy. This enabled more economical part production compared to conventional double pressed and double sintered components.

Component Specification

Weight (g): Ast CrM: 161
Density (g/cm3): DH1: 7.20; AstCrM: 7.10
Tensile Strength (MPa): DH1: 900; AstCrM: 900
Hardness (HV5): DH1: 344-369; AstCrM: > 350

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