diamond saw - blade manufacturing method

With the automotive, aviation and aerospace technology, the rapid development of the material properties and processing technology, increasing demand. New materials such as carbon fiber granite polishing pads  reinforced plastics, particle reinforced metal matrix composites (PRMMC) and ceramic materials are widely used. These materials have high strength, wear resistance, low thermal expansion coefficient and other characteristics, which determines them when machining tool life is very short. Resistant and stable development of novel superhard cutting tool is that many colleges and universities, research institutes and enterprises research. Diamond set mechanical, optical, thermal, acoustics, optics, and many other excellent performance in a, with a high hardness, low friction, high thermal conductivity, thermal expansion coefficient and chemical inertness is low, is an ideal material for tool manufacture. The recent development of a method for manufacturing diamond tools for an overview.
Application cited
(A) the processing of non-ferrous materials difficult to machineProcessing of copper, zinc, aluminum and other nonferrous metals and alloys, the material easy to adhere to the tool, processing difficulties. Using diamond low coefficient of friction, and non-ferrous metal affinity characteristics of small, diamond tool and the tool can effectively prevent the occurrence of metal bonding. Further, the elastic modulus of the diamond cutting edge portion is deformed when small, the cutting non-ferrous metal extrusion deformation is small, the cutting process can complete the small deformation, which can improve the surface quality.(2) the processing of non-metallic materials difficult to machineProcessing particle contains a lot of high hardness non-metallic materials difficult to machine, such as glass fiber reinforced plastic, filled silicone material, hard carbon fiber / epoxy composites, the material of the hard particles so that the tool wear serious, hard carbide cutting tools processing, and diamond tools, high hardness, wear resistance, and therefore processing efficiency.
(3) ultra-precision machiningWith the advent of modern integrated technology, precision machining direction to the development of the tool performance made some very high demand. Because diamond friction coefficient, low coefficient of thermal expansion, high thermal conductivity, can cut very thin chips, chip easily outflow affinity with other substances is small, easy to BUE, heat a small, high thermal conductivity, heat can be avoided of a blade and the workpiece, so the passivation edge, cutting deformation, the surface of higher quality can be obtained.
Method for producing diamond tools
Currently the main diamond processing polishing pads for granite  method has the following four categories: film coated tools, thick welded diamond tools, cutting tools and single crystal diamond sintered diamond tools.2.1 Thin Film Coated ToolsFilm coated tool rigidity and high-temperature characteristics in good collective material by chemical vapor deposition (CVD) tool made of diamond film deposition.As Si3N4 ceramics, WC-Co-based cemented carbide and the metal W thermal expansioncoefficient close to the diamond, heat generated when the film stress is small, it can be used as the base material of the cutter body. WC-Co-based alloy in the presence of Co binder phase easy to make the diamond film and the substrate is formed between the lower adhesion strength graphite, before the deposition in order to eliminate the need for pretreatment of Co (generally by acid etching to Co) .Chemical vapor deposition method is a method of using a gas containing the C source  Plate Compactor activated, the low gas pressure, the carbon atoms deposited in a certain area, the carbon atoms in the condensation, forming a diamond phase deposition process. Currently used for deposition of diamond by CVD include: microwave, hot filament, DC arc jet method.The advantage of diamond films can be applied to a variety of complex geometry of the tool, such as a blade with chip, end mills, reamers and drills; many non-metallic materials can be used to cut, cutting, cutting force, small deformation, smooth, abrasion slow, difficult to deform the workpiece for the workpiece material, tolerances small finishing. The main disadvantage is the diamond film and the substrate adhesion is poor, the diamond film does not have a re-grinding of the cutting tool.