Advertising Info Contact Us FREE Product Info. Mich. A new approach to induction hardening of automobile transmission gears simultaneously uses medium and high frequencies to achieve the required case characteristics. The process offers many variations of single and combined frequencies to engineer optimum processing parameters for individual gear configurations. Simultaneous dual frequency applied to a single inductor.
Photo shows uniform heating of gear profile.
Simultaneous dual-frequency induction heating adds a new dimension to the variables that control the induction heating process. The process requires less energy and space than earlier dual-frequency induction heating systems, as well as atmosphere furnace treating systems. It also can be more easily incorporated into an automated manufacturing line or flexible work cell. The reduced overall heating associated with simultaneous frequency heat-treating technique improves the microstructure of the hardened area, has minimal effect on material core properties and, in most cases, eliminates the need for finish machining to meet dimensional specifications after hardening. Case hardening increases both the abrasion resistance of the tooth face and the fatigue properties of the root of the tooth without through hardening.