Carbon fiber is a kind of high performance composite. It has many advantages, such as high strength, strong toughness, high temperature resistance, corrosion resistance and so on. It has been used in many fields. Because the hardness of carbon fiber is too high and brittleness is too high, it is not easy to machine it, and it will destroy the whole part with a little attention. The price of carbon fiber is more expensive, and the damage is too wasteful. Drilling is a common machining process. This article tells you the problems that will occur when the carbon fiber is bored.
Carbon fiber is a composite material. It has many layers like laminates. If the axial force is too large during drilling, the stress between each layer will also increase. If resin is unable to withstand the action of this force, there will be a phenomenon of stratification. The thermal conductivity of carbon fiber is small. Once the object is away from high temperature, the temperature will drop immediately, but its expansion coefficient and elasticity are relatively large. Therefore, when drilling, the hole will appear larger due to high temperature, and the hole will be smaller after cooling. In addition, carbon fibers have high strength but large brittleness. While drilling, drilling hole can not force too, the strength is too large, and the pressure of carbon fiber is easily broken at one point. Carbon fiber drilling is also a very consumable process. The hardness of carbon fiber is large, and the ordinary drilling material can not shake it half. It requires high hardness material. Even if the quality of the bit is very good and can not be used for a long time, it becomes dull in a moment and consumes more material.
In order to solve the difficult problem of drilling carbon fiber, mainly from two aspects, the first is the drilling tool, now generally use high-speed steel drill, all aspects of its price and performance together better, as for the cobalt drill, its wear resistance and thermal conductivity than high-speed steel drill is better, but the price is too high, so not much use. The other side of the process, the master of the process can grasp the time and strength of the drilling, the smooth completion of the task.
Shenzhen CN Technology Co.,Ltd is a professional manufacturer and distributor of carbon fiber products. Such as roll wrapped carbon fiber tubes,Hot press carbon fiber sheets,cnc carbon fiber cutting,carbon fiber chamfered.