Advantages of Halnn Diamond PCD Tools Drilling CFRP Material
Category：News
PublishedDate：2018-08-21
The carbon fiber composite material has high specific strength and specific rigidity. It is a composite material formed by using carbon fiber or carbon fiber fabric as reinforcement and resin, ceramic, metal, cement, carbon or rubber as the matrix. The lightweight effect is very obvious. It is widely used in aerospace, automotive industry and military products. However, it is a difficult problem to cut carbon fiber composite materials.
Part 1 The problems and difficulties of drilling the carbon fiber composites
(1) The temperature in the drilling process is concentrated in a narrow area near the cutting edge, resulting in severe tool wear, low durability and high production costs.
(2) Carbon fiber composites produce delamination damage. Layering will seriously reduce the performance of materials and the quality of parts. Even small delamination is a serious safety hazard, and even the parts are scrapped, which seriously affects the yield of products.
(3) The dimensional accuracy and surface roughness of the drill hole are not easy to meet the requirements, and residual stress is easily generated.
(4) The chips are black dust, which is easy to pollute the environment and endanger people's health. In addition, the electrical conductivity of the chips easily shorts the electrical equipment and the power grid.
Part 2 Solutions specific for CFRP Materials from Halnn
(1) Improve the material of the drill to improve the wear resistance of the drill.
Such as PCD Drill Bits, diamond coating tools and so on. Experiments have shown that pcd drill bits are superior to other types of drill bits. Diamond PCD Tools are the best choice for drilling CFRP carbon fiber reinforced composite materials. Or You can use special drills, such as center drill, twist drill, drill reamers to achieve high-speed and high-precision drilling, greatly improving the service life of the drill.
(2) Choose the right drill type
You should better choose the right type of drills when drilling carbon fiber composites. It should reduce the length of the chisel edge, increased the back angle of the cutting portion of the drill bit to improve the sharpness of the cutting edges. The drill bit for CFRP materials should have a certain blade inclination angle, and it is negative angle, which will avoid the defects in the drilling process.
(3) Using a reasonable process
When the drilling precision required high, it should better use drilling process or grinding process, which can effectively reduce the surface roughness of the hole and improve the roundness of the hole.
Part 3 Halnn PCD Drill Bits for CFRP
Halnn PCD Tools for machining CFRP include Diamond PCD Drill bits, Diamond PCD Reamers, PCD Twisted Drills, PCD Step Drills, and other non-standard PCD Tools. We all adopt high quality PCD Blank as the cutting tips, which has excellent abrasive resistance. We make tungsten carbide as the base, it has good rigidity and size dimension, which will make sure the processing quality of drilling process, and design Internal spiral cooling to improve the cooling performance. The spiral flute of the drill bit can improve the chip removal performance and improve the processing efficiency, which is very important for drilling carbon fiber composite materials (CFRP).
The PCD drill bits from Halnn can be made with multi-cutting edges, and also can adjust the angle of the sharpness according to the specific process conditions. When drilling the hole for the composites, the cutting force of the drill bit can be reduced and the delamination phenomenon can be avoided. Also we can offer other complex pcd tools which including Drilling and hinging, helping improve the efficiency.