Study Of Metal Fiber Cutting Method

Along with the request to the material characteristics increasing, the compound and very small materials have become the tendency of the development of the new material. The metal fiber is exactly to have with the request because of its especial characteristics, such as good heat conductivity, conductibility, flexibility, corrosion resistance and heat-durability. So the metal fiber gets the extensive usage, and the new assortment and new characteristics of the product are created. The metal fiber is chiefly used in textile products, filter material, conductive plastics and fiber reinforced composite. The metal fiber products have the functions of anti-static electricity, reducing the electromagnetic wave radiation, bearing the heat and so on. For example, the woolen sweater defending the electromagnetic wave radiation can resist static electricity and lower the danger of the electromagnetic wave radiation to human health; It can make the physical property of the concrete generate qualitative change, and raise the ductility, crack resistance, compression resistance and shock resistance of the concrete to add a little amount of steel fiber in the concrete basal body. The increment in metal fiber demand stimulates the metal fiber to develop facing commercialization and practicability, and pursuing the high quantity, low cost, and carrying out the industry scale production have become the important target of the metal fiber development.Cutting is currently the most extensive method of manufacturing metal fiber. It can manufacture the short metal fiber, and can also make the long metal fiber. Its equipments are simple, its cost is cheap, and it is applicable to manufacture the metal fiber of different materials, such as low carbon steel, stainless steel, casting iron, copper, aluminum and its metal alloy etc. The article studies the methods of manufacturing metal fiber, vibrating turning and milling. The vibrating turning method is to design the flexible toolbar in order to turn the metal fiber in the lathe;The milling method is to make use of the end milling cutter to manufacture the metal fiber.The milling process is simulated by making use of the finite analysis software, DEF0RM-3D, and the finite analysis can simulate the formation process of metal fiber. Analytical results, the relations between the cutting dosage and the shape of metal fiber, cutting force, stress, strain and temperature, can be obtained. The simulating results can optimize the design parameters, and guide to the milling experiment.The experiments of the vibrating turning are done, and the material of the blank is ductile iron. The purpose of the experiment is to obtain the range of cutting dosage in which metal fiber can be generated, and measure the diameter and length of the metal fiber by researching the influence of the dosage upon the fiber function; The experiments of cutting dosage of milling are done, and the different blank materials, such as the copper, aluminum, 40chromes, are choose. The purpose of the experiments is to obtain the scope of the cutting dosage when the fiber format, compute the fiber theoretical equivalent diameter, and measure the fiber length. Through the experimental research and the theoretical analysis, the recommended geometrical angles of milling cutter and the cutting dosage are put forward. The results provide the reference to practical production.At the end of the article, main research results and conclusions are generalized, and the outlook to the finite analysis of milling process and the further work of the experiments of manufacturing metal fiber by cutting method are carried on.