American National Carbide (ANC) has announced improvements in its flagship grades for machining steels in the ISO P classification. All three of the grades made exclusively for its P Series of negative rake turning inserts have been reformulated to improve cutting characteristics and performance.
Grade AN3015 is designed for finishing applications and now has a very hard alloyed, gradient substrate, along with a multi-layered aluminum oxide CVD coating, to allow machining at higher speeds, while providing excellent resistance to flank wear and plastic deformation.
Grade AN3025 is ANC's best general-purpose grade for machining alloy steels. A multi-layered oxide coating over a new cobalt-enriched substrate provides a perfect balance of wear resistance and toughness at higher speeds.
Grade AN3035 for roughing applications is now much more robust, with a higher binder content and cobalt-enriched alloyed substrate. Its multi-layered aluminum oxide coating enhances the substrate's toughness allowing for machining in unfavorable conditions, such as scale and interruptions, and with heavy depths of cut.
All three grades are designed for machining across the entire ISO P range of application, from finishing to heavy roughing.
Related Glossary Terms
- alloy steels
Steel containing specified quantities of alloying elements (other than carbon and the commonly accepted amounts of manganese, sulfur and phosphorus) added to cause changes in the metal’s mechanical and/or physical properties. Principal alloying elements are nickel, chromium, molybdenum and silicon. Some grades of alloy steels contain one or more of these elements: vanadium, boron, lead and copper.
- aluminum oxide
Aluminum oxide, also known as corundum, is used in grinding wheels. The chemical formula is Al2O3. Aluminum oxide is the base for ceramics, which are used in cutting tools for high-speed machining with light chip removal. Aluminum oxide is widely used as coating material applied to carbide substrates by chemical vapor deposition. Coated carbide inserts with Al2O3 layers withstand high cutting speeds, as well as abrasive and crater wear.
- chemical vapor deposition ( CVD)
chemical vapor deposition ( CVD)
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.
- flank wear
Reduction in clearance on the tool’s flank caused by contact with the workpiece. Ultimately causes tool failure.
- plastic deformation
Permanent (inelastic) distortion of metals under applied stresses that strain the material beyond its elastic limit.
Angle of inclination between the face of the cutting tool and the workpiece. If the face of the tool lies in a plane through the axis of the workpiece, the tool is said to have a neutral, or zero, rake. If the inclination of the tool face makes the cutting edge more acute than when the rake angle is zero, the rake is positive. If the inclination of the tool face makes the cutting edge less acute or more blunt than when the rake angle is zero, the rake is negative.
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.
- wear resistance
Ability of the tool to withstand stresses that cause it to wear during cutting; an attribute linked to alloy composition, base material, thermal conditions, type of tooling and operation and other variables.