(英) Application of Consolidation Method to the Recycling of Grinding Swarf of Bearing Steel (日) 圧縮成形したベアリング鋼研削加工屑のリサイクル性に関する研究
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(英) This paper deals with the recycling of bearing steel grinding swarf by high-density consolidation. The grinding swarf was compacted at the pressing pressure from 98 to 588 MPa. The maximum density of 5.41 g/cm^3 was obtained at the pressing pressure of 588 MPa. Metal recovery rate that is one of the most important factors in metal recycling depended on the density of the grinding swarf briquet. The metal recovery rate of about 90% was obtained at the density of 4.8 g/cm^3. Chemical compositions of original bearing steel (SUJ 2) and recycled metals obtained from melting of grinding swarf briquets in air and Ar were evaluated. (日) 本論文は,ベアリング·レース製造工程で発生する研削加工屑のリサイクル性について調査を行った.未熱処理の高炭素クロム鋼製部品の研削加工屑を一軸プレスにより,98∼588MPaで圧搾固化成形した.この成形体を大気熔解し,メタル回収率,成分分析等の実験を行った結果,大気溶解を行うことで含有元素の酸化,消耗により鉄の純度が向上し,99.8%の品位であること,ならびに,成形圧力の増加に伴って見かけ密度が5.41g/cm3まで上昇し,メタル回収率も固化密度の上昇につれて増加し,密度が4.8g/cm3以上になるとメタル回収率は約90%以上となり,ベアリング研削加工屑を鉄源として有効利用できることを明らかにした.
Kazutoshi Yamamoto, Hitoshi Takagi, Hiroaki MisawaandMasafumi Morimoto : Application of Consolidation Method to the Recycling of Grinding Swarf of Bearing Steel, Transactions of The Japan Society of Mechanical Engineers, Series A, Vol.69, No.679, 678-681, 2003.
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Number of session users = 3, LA = 0.66, Max(EID) = 433080, Max(EOID) = 1153089.