GCr15轴承钢圆锥滚子理化性能研究

Research on physical and chemical properties of GCr15 bearing steel conical roller

本研究旨在探索更大尺寸GCr15轴承钢圆锥滚子的理化性能,为轴承零件选材和扩大GCr15轴承钢应用提供参考。通过GCr15轴承钢圆锥滚子理化性能研究,有效直径35mm的圆锥滚子表层显微组织、表层硬度、心部显微组织均符合标准推荐要求,心部硬度低于标准推荐值59HRC的区域径向尺寸占比25.37%,轴向尺寸占比39.37%,其中低于淬硬值58HRC的区域径向尺寸占比12.11%,轴向尺寸占比23.36%。为满足标准推荐值要求,GCr15轴承钢圆锥滚子可选材应用尺寸到有效直径为26.12mm;为满足淬硬值需要,GCr15轴承钢圆锥滚子可选材应用尺寸到有效直径为30.76mm。在满足使用要求的前提下,用户和制造厂可协商确定更大尺寸的应用,以获得良好的性价比。

This study aims to explore the physical and chemical properties of larger GCr15 bearing steel tapered rollers,providing reference for material selection of bearing parts and expanding the application of GCr15 bearing steel.Through the study of the physical and chemical properties of GCr15 bearing steel tapered rollers,it was found that the surface microstructure,surface hardness,and core microstructure of the tapered roller with an effective diameter of 35mm meet the recommended standard requirements.The radial size of the area with a core hardness lower than the recommended standard value of 59HRC accounts for 25.37%,and the axial size accounts for 39.37%.Among them,the radial size of the area with a hardness lower than 58HRC accounts for 12.11%,and the axial size accounts for 23.36%.To meet the recommended value requirements of the standard,GCr15 bearing steel tapered rollers can be selected and applied with dimensions up to an effective diameter of 26.12mm;To meet the quenching value requirements,GCr15 bearing steel tapered rollers can be selected and applied to an effective diameter of 30.76mm.On the premise of meeting the usage requirements,users and manufacturers can negotiate to determine a larger size application to achieve a good performance price ratio.