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相对较新的方法。所述陶瓷在电解槽中沉积在正极上，所述电解槽包括水溶液和作为细磨粒使用的分散陶瓷微粒。该方法在不使用粘结剂的情况下，可以在基板上成功地形成各种由微细磨料和阳极化合物组成的沉积层，所制备的微细磨料层具有与基片结合力好、结构相对疏松等优点，具有很高的研磨工具潜力，起到了切屑腔的重要作用。然而，需要沉积的衬底仅限于金属，特别是Al、Mg、Ti等，因为ASD工艺的初始反应与形成氧化铝涂层的过程非常相似。在本研究中，应用ASD和Applicat…制造新型磨具考察了它们对研磨过程的影响。由于ASD工艺与所用基材的形状无关，铝合金具有良好的附着力和很好的应用价值，因此对铝箔和铝丝进行了基材金属检查。作者发现，ASD工艺由于在同一层中形成氧化铝，导致细小的磨料刚性地固定在沉积层中。研磨片用于评估玻璃材料的研磨能力。研究发现，材料去除深度取决于磨料种类和砂轮接触压力，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。作者认为，采用阳极火花放电沉积的磨具对玻璃、单晶硅和陶瓷等脆性材料具有足够的研磨能力，以获得光学光滑的表面。较少

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