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        PCD Turning Inserts
        HomeHome > Blog > PCD Turning Inserts

        PCD Turning Inserts

        Aug 07, 2023

        Carmex Precision Tools Ltd. has introduced new diamond turning inserts designed to enable customers to achieve higher productivity and greater efficiency in machining hard materials faster and more effectively than grinding or ceramics. The PCD inserts excel in the machining of nonferrous materials, including high-silicon aluminum, copper and brass alloys, magnesium, carbon fiber reinforced plastics, and composites.

        CVD is designed for machining aluminum and magnesium alloys, high-silicon aluminum, precious metal alloys, plastics with abrasive fillers, tungsten carbide, and ceramic green compacts. An advanced chipbreaker reduces heatgeneration and energy consumption.

        The diamond PCBN inserts deliver high-precision performance and excellent surface finish in materials including hardened and heat-treated steels up to 72 HRC, HSS, high-alloyed steels hardened to 45 HRC and nickel-base superalloys, gray cast iron, ductile, and graphite. Available in both one and two cutting edge configurations, Carmex diamond inserts deliver both higher performance and longer tool life.

        Jim White, national sales manager for Carmex USA, comments, “The many advantages of diamond tooling have resulted in its increasing popularity throughout industry. Our PCD, CVD-T and PCBN inserts deliver high material-removal rates, superior surface finish, and longer tool life in abrasive materials.”

        Substance used for grinding, honing, lapping, superfinishing and polishing. Examples include garnet, emery, corundum, silicon carbide, cubic boron nitride and diamond in various grit sizes.

        Substances having metallic properties and being composed of two or more chemical elements of which at least one is a metal.

        Cutting tool materials based on aluminum oxide and silicon nitride. Ceramic tools can withstand higher cutting speeds than cemented carbide tools when machining hardened steels, cast irons and high-temperature alloys.

        High-temperature (1,000° C or higher), atmosphere-controlled process in which a chemical reaction is induced for the purpose of depositing a coating 2μm to 12μm thick on a tool’s surface. See coated tools; PVD, physical vapor deposition.

        Groove or other tool geometry that breaks chips into small fragments as they come off the workpiece. Designed to prevent chips from becoming so long that they are difficult to control, catch in turning parts and cause safety problems.

        Materials composed of different elements, with one element normally embedded in another, held together by a compatible binder.

        Machining operation in which material is removed from the workpiece by a powered abrasive wheel, stone, belt, paste, sheet, compound, slurry, etc. Takes various forms: surface grinding (creates flat and/or squared surfaces); cylindrical grinding (for external cylindrical and tapered shapes, fillets, undercuts, etc.); centerless grinding; chamfering; thread and form grinding; tool and cutter grinding; offhand grinding; lapping and polishing (grinding with extremely fine grits to create ultrasmooth surfaces); honing; and disc grinding.

        Available in two major types: tungsten high-speed steels (designated by letter T having tungsten as the principal alloying element) and molybdenum high-speed steels (designated by letter M having molybdenum as the principal alloying element). The type T high-speed steels containing cobalt have higher wear resistance and greater red (hot) hardness, withstanding cutting temperature up to 1,100o F (590o C). The type T steels are used to fabricate metalcutting tools (milling cutters, drills, reamers and taps), woodworking tools, various types of punches and dies, ball and roller bearings. The type M steels are used for cutting tools and various types of dies.

        Cutting tool material consisting of polycrystalline cubic boron nitride with a metallic or ceramic binder. PCBN is available either as a tip brazed to a carbide insert carrier or as a solid insert. Primarily used for cutting hardened ferrous alloys.

        Cutting tool material consisting of natural or synthetic diamond crystals bonded together under high pressure at elevated temperatures. PCD is available as a tip brazed to a carbide insert carrier. Used for machining nonferrous alloys and nonmetallic materials at high cutting speeds.

        Tough, difficult-to-machine alloys; includes Hastelloy, Inconel and Monel. Many are nickel-base metals.

        Intermetallic compound consisting of equal parts, by atomic weight, of tungsten and carbon. Sometimes tungsten carbide is used in reference to the cemented tungsten carbide material with cobalt added and/or with titanium carbide or tantalum carbide added. Thus, the tungsten carbide may be used to refer to pure tungsten carbide as well as co-bonded tungsten carbide, which may or may not contain added titanium carbide and/or tantalum carbide.

        Workpiece is held in a chuck, mounted on a face plate or secured between centers and rotated while a cutting tool, normally a single-point tool, is fed into it along its periphery or across its end or face. Takes the form of straight turning (cutting along the periphery of the workpiece); taper turning (creating a taper); step turning (turning different-size diameters on the same work); chamfering (beveling an edge or shoulder); facing (cutting on an end); turning threads (usually external but can be internal); roughing (high-volume metal removal); and finishing (final light cuts). Performed on lathes, turning centers, chucking machines, automatic screw machines and similar machines.

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