Because have good wearability, deposit of physical gas phase (PVD) coating is applied extensively at cutting cutting tool. Engineer and technical personnel had obtained significant progress on the development of PVD coating, this should be attributed to " allogamy " phenomenon -- namely the demand that some studies to the technical progress of the domain can promote other market. For example, tool market is OK from the benefit in the advanced coating that develops for car engine plaza. Recently, technology of Dutch PVD coating develops a business -- coating of technology of lustre of a person of extraordinary powers (Hauzer Techno Coating) the company uses technology of its anti-friction coating at tool market, scored exceedingly good gain. In a lot of cutting tool treatment, the hardness of coating and good adhesiveness are crucial. But, of coating a few otherer character also can become its advantage place. For example, processing weaker workpiece data (be like aluminium or plastic) when, of coating not agglutinant very important, because it can prolong cutting tool life, improve the productivity that machines equipment. In other words, slick surface can become a kind of of figuration cutting tool huge advantage, because it can omit,machine to the follow-up of workpiece. In the application of car coating, undertaking study extensively to these character all the time, its are coating function gets optimizing ceaselessly as a result. Kind diamond carbon (DLC) coating has exceedingly good tribology character, be used extensively at car component treatment. The coefficient of friction of DLC coating is very low, produce felt not easily with workpiece material. Use different coating deposit technology (magnetism accuses to splash shoot, PACVD, electric arc evaporates etc) , can acquire the coating character that suits to machine a requirement. DLC coating suits Tu Fuzuan very much head, razor blade, establish milling cutter, curium piece, tap, drift, Injection Mold Tooling. Besides be used at machining aluminium to make work, DLC coating still can be used at machining other blame metal of iron a group of things with common features and plastic cutting tool. Another case that the technology changes another market from a market is the DLC that do not have hydrogen (Ta-C) coating. In project of coating of executive accept rice (Nanocoat, this is plan of an Europe scientific research, the target is to use an environment friendly model deposit technology develops coating of all sorts of accept rice structure) during, in Italy's clever Feiyate research center (CRF) , be in to besmear Fu car engine spare parts (tappet) the coating of a few kinds of DLC that go up had a test. The conclusion that these tests reach is: Ta-C coating has the coefficient of friction of highest hardness and lowest. A person of extraordinary powers that regards project of accept rice coating as one of partners lustre company, use the knowledge that gains from this project, can have solved the adhesiveness problem of Ta-C coating. Its are as a result, realized all sorts of having exceedingly good adhesiveness (DB 1 - 2) be worth with hardness (40 - 70 GPa) the industrialization application of Ta-C coating. In the concussion test that in an United States large engine manufacturer has, ta-C coating falls in the concussion load of 2kN, in good condition still nondestructive, have a few macroscopical tiny flaw only. And in same concussion load falls, had fallen off as comparative and fiducial coating shift. Rockwell impress photograph makes clear, ta-C coating has exceedingly good adhesiveness. Coating of this kind of Ta-C that do not have hydrogen is to use electric arc (circular arc or laser arc) evaporate of craft preparation, have kind of diamond structure (basically be SP3) . The typical hardness of Ta-C coating can be amounted to 3, 000 - 7, 000HV, typical coefficient of friction is 0. 02 - 0.
1. Company of lustre of a person of extraordinary powers thinks, the exceedingly good character of Ta-C coating, added a success to solve coating adhesiveness problem, make its become a kind to provide the coating of accurate cutting tool that develops prospect extremely. CNC Milling
CNC Machining