Advantages And Process Of Machined Graphite Parts

- Sep 19, 2017-

    In the production of several aviation oil pumps have graphite m106h as the material of the sealing ring-like parts, the typical parts shown in Fig. 1. This part is the end face seal work way, B face is the seal surface, this surface accuracy request is very high. Machined Graphite Parts

    When machining B-surface, precision turning does not reach the requirement, and this graphite is brittle material, also contains epoxy resin, can not be grinding, after analysis decided to adopt grinding processing. In the absence of information, we have carried out a process test on the grinding of such graphite parts, and finally obtained the ideal process method to meet the requirements of the parts.Machined Graphite Parts

    On the polished 2-piece flat on the $number drip kerosene and instrumentation oil, with cotton oil on the plate daub evenly, after 3min, the flat surface of the oil layer wiped clean. In this way, the kerosene and micropowder in the permeable plate pores are uniformly mixed to form a micro-layer cutting fluid for processing graphite. The part is put on the plate to carry on the circular spiral movement, the two hands force is consistent, through the micro-layer extrusion cutting, completes the plane b the grinding. Pay attention to clean the plate, in time to remove the debris and dirt.Machined Graphite Parts

    After the completion of the parts, with a clean silk cloth or cotton wool lightly rub to grind debris. Attention can not be used to clean oil, the test found that after the oil immersion, the surface roughness of the parts become worse. Polishing plate. 4 layers of silk in a piece of already developed flat, with kerosene to the silk cloth poured through, and then with the W7 chromium oxide polishing paste will be another 2 pieces of the tablet on the silk cloth polished. Machined Graphite Parts

    The effect of polishing is to throw off the coarse particles on the plate and make the micro-powder distribution of the embedded plate highly consistent. At the same time, the surface roughness of the plate is improved, which is smaller than Ra0.1μm. This process is the key to this method.Machined Graphite Parts