按通常的方法,用钻头钻削石墨——环氧树脂复合材料时,如不采取其它措施,钻头刀口极易磨钝,且钻出的孔会产生裂边。如在钻削时添加研磨膏,则可减少刃口磨损并提高钻孔质量。该工艺是在剪切试验中,为制作试件而研制的。根据试件要求,须在厚度为1～1.5mm 的板上钻出九个直径为12.7mm 的孔。 In the usual way, when drilling a graphite-epoxy composite with a drill bit, the drill bit can easily be blunt and the drilled hole can crack if no other measures are taken. If you add abrasive paste while drilling, you can reduce the edge wear and improve the quality of drilling. The process is in the shear test, developed for the production of test pieces. According to the requirements of the specimen, nine holes with a diameter of 12.7 mm shall be drilled on a plate with a thickness of 1 to 1.5 mm.