ベアリング鋼研削加工屑リサイクルへの圧縮成型法の適用

抄録

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/cm³ 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/cm³. Chemical compositions of original bearing steel (SUJ 2) and recycled metals obtained from melting of grinding swarf briquets in air and Ar were evaluated.