| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a method for manufacturing a rolling-slide member by which the rolling-slide member exhibiting the surface hardness sufficient for securing good rolling-fatigue service life can be obtained inexpensively in the wide temmperature range upto the high temperature of about 300°C. <P>SOLUTION: Ashape blank obtained from a steel material containing 3.2-5.0 mass% Cr and 0.05 to <0.5 mass% V is subjected to a carbo-nitriding treatment, a tempering-treatment at the temperature of >250°C and≤300°C and a finish-processing. In this way, it is controlled so that a Vickers hardness at a position from the surface to 50μm depth. is≥740, a carbon content on the surface layer in the range from the surface to 10μm depth is 1.1-1.6 mass%, a nitrogen content on the surface layer in the range of the surface to 10μm depth is 0.1-1.0 mass%, grains having 0.2-2μm granular diameter composed of vanadium-nitride and/or 0.2-2μm granular diameter composed of vanadium-carbo-nitride, are existed, and the area ratio of the grains on the surface layer in the range from the surface to 10μm is made to be 1-10%, is obtained. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
