Flange surface scratch-proof method

The invention belongs to the technical field of flange production, in particular to a flange surface scratch-proof method which solves the problem that the surface of a flange product reaching the roughness Ra less than or equal to 6.3 micrometers required by the standard is prone to collision and scratch. The flange surface scratch-proof method comprises the following steps that 1, a tool nose circular arc cutter of R:0.8 is selected; 2, the product is fixed to a cutter platform for fixing a machining cutter, and the feed of 0.5 mm and the rotating speed of 1000-1300 are used; and 3 surface roughness detection is carried out. The flange product produced by the flange surface scratch-proof method does not has obvious surface collision and scratch, and even if collision and scratch exist, the surface roughness Ra less than or equal to 6.3 micrometers required by the standard can also be reached. 本发明属于法兰生产技术领域，具体是种法兰表面防划伤方法。解决了法兰产品表面达到标准要求的粗糙度Ra≤6.3μm容易磕碰划伤的问题，包括以下步骤：1～选择R:0.8的刀尖圆弧刀具；2～将产品固定在固定机加刀在刀台上，使用0.5mm的走