STUDY ON FLEXIBLE LAPPING AND GRAINDING TOOLS FOR MIRROR SURFACE FINISHING

阳极火花沉积（ASD）是一种利用火花形成陶瓷涂层的新方法。所述陶瓷在电解液中沉积在正极上，所述电解液包括水溶液和分散的陶瓷细颗粒，作为细磨粒施用。根据该方法，可以在没有粘合剂的衬底上成功地形成由精细磨料和阳极化合物组成的各种沉积层。所制备的细磨粒层具有良好的附着力和相对多孔的结构，起到了切屑袋的重要作用，因此具有很高的研磨和研磨工具的潜力。然而，由于ASD工艺的初始反应与阳极氧化过程非常相似，因此沉积的基底仅限于金属，特别是Al， Mg， Ti等。本文研究了新型ASD磨具的制备及其在研磨和研磨工艺中的应用。由于ASD工艺与所使用的衬底形状无关，并且铝合金是附着力好且非常有用的最佳金属，因此对铝箔和电线进行了衬底金属检查。作者发现，由于在同一层中形成了铝石，ASD工艺导致细粒磨料在沉积层中刚性固定。磨料片被用来评估玻璃材料的研磨能力。研究发现，材料的去除深度取决于磨料的种类和砂轮的接触压力，研磨比也取决于接触压力。在最佳研磨条件下，获得了良好的表面完整性。结果表明，采用阳极火花放电沉积的新型磨具对玻璃、单晶硅和陶瓷等脆性材料具有足够的研磨和磨削能力，可获得光学光滑的表面。少

Anodic spark deposition (ASD) is a relatively new method of forming a ceramic coating film by means of a spark. The ceramic is deposited on the positive electrode in an electrolytic bath, which comprises an aqueous solution and dispersing ceramic fine particles applied as fine abrasive grains. According to this method, various deposition layrs composed of fine abrasives and anodic compounds can be successfully formed on a substrate without a bonding agent.The prepared fine abrasive layrs have a high potentiality of lapping and grinding tools because they have such advantages as good adhesion to the substrate and comparatively porous structure, which plays an important role of chip pockets. However, the substrates to be deposited on are limited to metal, in particular, Al, Mg, Ti and the like because the initial reaction of ASD process closely resembles that of an anodizing process to form alumite coating.In this study, the manufacture of new abrasive tools applying ASD and the applicat … More ion of them to the lapping and grinding process were investigated. The aluminum foil and wire were examined for substrate metal because ASD process was independent of the shape of substrate to be used and aluminum alloy was best metal for good adhesion and quite useful for the application.The authors have found that ASD process causes fine abrasives rigidly fix in the deposited layr because of the formation of alumite in the same layr. The abrasive sheets were used to estimate the lapping ability of the glass material. It was found that the material removal depth depends on the kind of abrasives and the contact pressure of the wheel, and that the lapping ratio also depends on the contact pressure. The good surface integrity were accomplished under the optimum lapping condition. The authors concluded that the newly developed abrasive tools applying anodic spark discharge deposition had sufficient lapping and grinding ability for brittle materials such as glass, monocrystalline silicon and ceramics to achieve an optically smooth surface. Less