Browse Publications Technical Papers 2001-01-3373
2001-10-01

Development of High-Strength Carbo-Nitriding Process 2001-01-3373

One of the problems concerning T/M is conventionally how “Improving the input torque as the engine gets higher power” and “Making product lighter in weight and more compact to improve the fuel consumption” can be realized at the same time. To realize these things at the same time, it is needless to say that the gears must be stronger. For the “pitting fatigue strength” which is quoted as a problem lately, the fatigue mechanism has not been clarified, yet. Therefore, it is now a big problem how to achieve high strength. In the meantime, we tried to develop the production engineering for “finer crystal grains” and “fine-dispersion precipitation of carbo-nitrides,” and succeeded in improving “pitting fatigue strength” remarkably. Such results will be reported in the following sections:

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