Classification of diamond cutlery

Natural diamond (ND) tool
Vines for diamond peak, that's this characteristics:
(1) spike shows we have a diamond.
(2) the wave amplitude (FWHM) 4.1cm-1
Seems as a pure diamond. ND may be the hardest known mineral substances, mainly employed in the preparation of Cutter tool. Following your fine grinding of natural diamond cutter edge radius as high as 0.01~0.002μm. Natural single crystal diamond (Single Crystalline Diamond,SCD) technologically advanced part of the tool power 1500 times times but nevertheless towards the edge smooth. SCD turning of aluminum piston Ra can reach 4μm, and beneath same cutting conditions using PCD tool when machining the outer lining roughness of Ra for 15~50μm. SCD tool joined with precision and ultraprecision machining precision lathe, mirror surface can be obtained.
Polycrystalline diamond (PCD) tool
PCD adopted under conditions of heat and super high pressure cobalt gathered metal bond diamond powder sintered polycrystalline materials synthesis, also known as sintered diamond. Whole sintering of polycrystalline diamond tool cutter, milling, grain is often a random arrangement of PCD are isotropic, uniform hardness, graphitization temperature of 550 ° c. Tool with high hardness, high thermal conductivity, low thermal expansion coefficient, low coefficient of friction and high coefficient of elasticity. Blade is very sharp and so on.
Artificial polycrystalline diamond compact (PDC) tool
To reinforce PCD blade toughness and weldability, PCD and carbide knives made from artificial polycrystalline diamond composite Blade (PDc). Cemented carbide substrate with pressed 0.5~1mm thick layer on its surface formed by sintering PCD. Flexural strength of composite blades with carbide, hardness near to PCD, can be an alternative to PCD. PCD and artificial polycrystalline diamond compact (PDC) tool for sharp edges and processing with the workpiece surface quality than ND. While doing so their poor machinability, grinding than small, difficult under some of the geometric model of the. Currently using artificial polycrystalline diamond composite preparation tool could only still cannot be made indexable blade with chip breaker grooves and complex 3d surface geometry milling cutters.
CVD diamond thick film (TDF) welding tool
Welding of diamond thick film cutting tools are great CVD diamond thick film laser cut welded on the substrate (typically cemented carbide to the k class), occurance of PDC and polishing compound, welded to the body with the second time, grinding into the required shape and leading edge. Figure 3 (a) below, and CVD diamond thick films (diamond-like carbon film thickness up to 30μm), rich in hardness, wear resistance, low friction characteristics, is right material for cutting non-ferrous metal and non-metal tool manufacturing. Because of diamond welding technology complex, CVD diamond thick film (TDF) welding tool will never be high-volume applications.
Diamond coated cutting tools
Diamond-coated tools are directly within the cemented carbide by CVD method (k kind of cemented carbide) or 1~25μm Diamond-like carbon films deposited on a ceramic substrate layer, no cleavage surface of isotropic. Figure 3 (b). Thin film coating tool hardness approximately 9800~10000HV. High thermal conductivity, thermal conductivity at room temperature as much as 2000W · m-1 · K-1, thermal conductivity only cemented 80~100m-1 · K-1。 CVD diamond coated tool on any complex shapes, the vast majority of this can be PCD cannot have significant advantages.
Cubic Boron Nitride (PCBN) tool
Cubic nitride boron (PCBN) is following artificial synthesis diamond zhihou appears of second species inorganic super hard material, its hardness slightly times Yu diamond, hot stability good, heat sexual can reached 1400~1500du, than diamond of heat sexual (700~800du) almost high 1 time times. cubic nitride boron (PCBN) tool main for processing various ferrous metals and alloy material; most for Yu various quenching hard steel (carbon pigment tools steel bearing steel die steel high speed steel) Pearlite ash mouth certain (vanadium titanium cast iron) Chilled cast iron high temperature alloy (nickel base alloy cobalt base alloy) plus the surface spray heap welding of processing. has using long term, reduced for knife number, compensation downtime by spent of their time, makes NC machine and Automation brand of efficient can tend to be stuffed with play, can alter traditional of machinery processing way (is quenching Qian with tool roughing and quenching Hou with wheel fine processing of method), to can in the Taiwan NC machine for quenching Qian quenching Hou of turning processing (to car generation mill), has is great of statistics.