Abstract
Automotive steering columns use a variety of levers to lock the tilt mechanism in position. A PM material has been developed to withstand the impact and hardness performance requirements of this application. The part only requires honing of the pivot hole to meet the specified tolerance. Long term plans are to achieve the performance requirements using a modified version of the material. This has a higher graphite addition and can be used after tempering the ‘as-sintered’ product, say Brian James and Thomas Murphy of Hoeganaes Corp Riverton, Riverton, New Jersey, USA, and Vernon Potter of Presmet Corp, Worcester, Massachusetts, USA.
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