The Machining Characteristics Of Various Composite
Fiberglass is commonly known as the glass-fiber-reinforced thermosetting-resin composite, it is difficult to cut materials. Glass fiber reinforced plastic from phenolic resin, epoxy resin, unsaturated polyester resin, etc. The main ingredient is SiO2 glass fiber filler, hard, wear-resistant, high strength, heat resistance, wood powder as filler in plastic can be cut poorly.
Resin matrix, machinability is different. Epoxy phenolic resin base difficult to cut. Experiments showed that the cutting glass fiber reinforced plastic in wear of high-speed steel tool material of the most serious, p-class and m-class tungsten carbide wear, the k class wear the smallest. K class with least amount of cobalt K10 most wear-resistant, and with diamond or cubic Boron Nitride cutting tool the cutting glass fiber reinforced plastic, can greatly increase productivity. When you select the tool geometry, high glass fiber content of glass fiber reinforced plastic plate, molded and winding materials, r0=20~25 °; of filament wound material, r0=20~30 °.
Due to the large glass elasticity, rear corner to choose larger value, A0=8~14 °; auxiliary angle down, reduces the surface roughness, refined car to 6~8 °. Process prone to delamination, raising volume of tubes, and filament winding FRP, 6~15 ° inclination should be used. Cutting v=40~100m/min,f=0.1~0.5mm/r,aP=0.5~3.5mm, refined car aP=0.05~0.2mm.