Abstract
This article shows typical results of laser hardening of 42CrMo4, the most used steel type for gear wheels. If the laser process is done properly, it gives perfectly reliable results with stable and controlled hardness profile. But in case of bad parameter setting, it can lead to lowering of lifetime or even fatal part failure.Further we answer common technological questions and differences between conventional induction hardening and laser hardening.There are summarized results from many experiments – wear resistance test, X-Ray stress measurement, metallography and experience from defectoscopy.This article shows typical results of laser hardening of 42CrMo4, the most used steel type for gear wheels. If the laser process is done properly, it gives perfectly reliable results with stable and controlled hardness profile. But in case of bad parameter setting, it can lead to lowering of lifetime or even fatal part failure.Further we answer common technological questions and differences between conventional induction hardening and laser hardening.There are summarized results from many experiments – wear resistance test, X-Ray stress measurement, metallography and experience from defectoscopy.
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