HIGH SURFACE PRESSURE RESISTANT COMPONENT AND MANUFACTURING METHOD THEREFOR

• Main Authors: ITO YASUAKI, UCHIDA KAZUNARI, KAMIYA KEIICHIRO, YAMAGUCHI KOHEI, ISHIKURA RYOHEI, TERADA HIROKI, TOYODA HIROAKI, OSHIMA SHUNSUKE, MIYAUCHI JUNYA
• Format: Patent
• Language: English; Japanese
• Published: 19.03.2020
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

To provide a high surface pressure resistant component capable of enhancing abrasion resistance of a sliding surface to which high surface pressure is added without adding a shot-peening treatment, and a manufacturing method therefor.SOLUTION: A high surface pressure resistant component consists of a steel having a composition containing, by mass%, C:0.17 to 0.23%, Si:0.80 to 1.00%, Mn:0.65 to 1.00%, P:0.030% or less, S:0.030% or less, Cu:0.01 to 1.00%, Ni:0.01 to 3.00%, Cr:0.80 to 1.00%, and the balance Fe with inevitable impurities, and surface layer C concentration of a carburized hardening layer is 0.70 to 0.80 mass%.SELECTED DRAWING: None 【課題】ショットピーニング処理を追加することなく、高面圧が加わる摺動面の耐摩耗性を高めることができる耐高面圧部品およびその製造方法を提供する。【解決手段】耐高面圧部品は、質量％でＣ：０．１７〜０．２３％、Ｓｉ：０．８０〜１．００％、Ｍｎ：０．６５〜１．００％、Ｐ：０．０３０％以下、Ｓ：０．０３０％以下、Ｃｕ：０．０１〜１．００％、Ｎｉ：０．０１〜３．００％、Ｃｒ：０．８０〜１．００％を含有し、残部Ｆｅ及び不可避的不純物の組成を有する鋼からなり、浸炭焼入れ層の表層Ｃ濃度が質量％で０．７０〜０．８０％である。【選択図】 なし