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    • 3. 发明授权
    • Grinding wheel, a process of manufacturing the grinding wheel and a process of reclaiming the grinding wheel
    • 磨轮,制造砂轮的过程和回收砂轮的过程
    • US06796891B2
    • 2004-09-28
    • US10206337
    • 2002-07-29
    • Yoshiharu Terada
    • Yoshiharu Terada
    • B24B500
    • B24D5/16B24D3/28
    • A grinding wheel comprising an outer annular grinding portion, and an inner core portion which is located radially inwardly of the annular grinding portion to support the annular grinding portion and which is formed of a composition including as a major component a thermoplastic resin having a specific tensile strength of at least 12 MPa. The grinding wheel is manufactured in a process including a step of crushing the core portion of the used grinding wheel into pellets to be reclaimed as a material for the core portion, a step of preparing a composition for the core portion, which includes a mass of the pellets and a fresh thermoplastic resin having a specific tensile strength of at least 12 MPa, and a step of forming the core portion by using the composition in a molten state. The process may further include a step of reclaiming the grinding portion of the used grinding wheel.
    • 一种砂轮,包括外环形研磨部分和内芯部分,所述内芯部分位于所述环形研磨部分的径向内侧以支撑所述环形研磨部分,并且所述内芯部分由包含作为主要部件的组合物形成,所述热塑性树脂具有特定的拉伸强度 强度至少为12MPa。 研磨轮的制造方法包括以下步骤:将所使用的砂轮的芯部分粉碎成作为芯部的材料回收的粒料;制备核心部分的组合物的步骤,其包括: 所述颗粒和具有至少12MPa的比拉伸强度的新鲜热塑性树脂,以及通过使用所述组合物在熔融状态下形成所述芯部的步骤。 该方法还可以包括回收所使用的砂轮的研磨部分的步骤。