Improvements on Induction Fixture Hardening

摘要

Fixture-hardening, also known as quench-press hardening, is a widespread process mainly in the automotive industry. Since many years Induction Fixture Hardening and Tempering of single sliding sleeves and crown wheels has been state-of-the-art. The presentation introduces an improved inductive hardening and tempering process that combines the known benefits of induction heating/hardening with the pros of a press hardening process. The main component is a new hardening machine with implemented fixture hardening assembly and integrated induction coil. The inductive energy can be used for heating up work pieces prior to fixture hardening and for tempering, which allows to simultaneously draw out the calibration mandrel without any abrasive wear on its surface.