K-0711 ボールバニシング加工によるS35C材の表面改質と疲労強度改善(S07-3 疲労信頼性の向上(熱処理,加工))(S07 表面改質とその機能特性評価)

概要

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The effect of ball-burnishing process on surface conditions and uniaxial fatigue properties was investigated as compared with lathe turning process using S35C normalized test pieces. As a result, the following were obtained: (1) Surface roughness was improved from 2.2 Ra to 0.3 Ra, and surface hardness was increased from 200 Hv to 300 Hv. (2) Residual stress was changed from tensile value of 90 MPa to compressive of -700 MPa. (3) Surface improvement was limited to near the surface because both hardness and residual stress distributions showed steep decreases within 100 fμ. m from the surface. (4) Both fatigue life and fatigue strength were improved by 3〜10 times and 5〜10% respectively.
一般社団法人日本機械学会の論文
2001-08-22