Gear component

• Main Authors: FUKUDA KUNIHIRO, NONOMURA KAZUYA, TAHARA SUKENORI
• Format: Patent
• Language: Chinese; English
• Published: 23.07.2024
• Subjects: BLASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ENGINEERING ELEMENTS AND UNITS; GEARING; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LIGHTING; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; THERMAL INSULATION IN GENERAL; WEAPONS

The purpose of the present invention is to provide a gear member having high hardness of a surface layer of a tooth root and excellent bending fatigue strength. The gear member according to the present invention is characterized in that the surface layer of the tooth root includes a portion in which the area ratio of carbides is 10% or less and the number density of carbides is 6/10 [mu] m2 or less. 本发明的目的在于提供齿根的表层的硬度高、弯曲疲劳强度优异的齿轮部件。本发明的齿轮部件的特征在于，在齿根的表层包含碳化物面积率为10％以下且碳化物数密度为6个/10μm2以下的部分。