| 摘要 |
2.1 During the honing of, for example, the working surfaces of pistons, the material structure is deformed in the area of the edge zone. Following the honing, the working surface is retreated in a blasting unit with a liquid jet under high pressure. The requisite blasting pressure already leads to destruction of the graphite clusters embedded in the structure, as a result of which an optimum working surface cannot be obtained in the production run. …<??>2.2 In order to provide a surface free of metal scales, but with the graphite clusters embedded in the structure not being destroyed or dissolved away, the surface (6) is brushed in addition to the honing and high-pressure blasting treatment. To carry out this method, a tool (3a) is provided which has a tool part, such as honing sticks and/or brush sticks (15), and in addition at least one blasting device (13). A surface free of metal scales is obtained by the combined high-pressure blasting and brush treatment. …<??>2.3 The invention ensures that the graphite clusters present in the structure remain intact. The method is simple to carry out with the tool. …<IMAGE>… |
