wnmg insert

WNMG inserts are widely used in turning operations due to their versatile geometry and robust design. This guide provides a comprehensive overview of WNMG inserts, covering their features, applications, selection criteria, and troubleshooting tips to help you optimize your machining processes and achieve superior results.What is a WNMG Insert?A WNMG insert is a triangular-shaped turning insert with a 80-degree nose angle. The 'W' indicates that the insert shape is 80° trigon, the 'N' indicates that the insert has a neutral clearance angle, the 'M' represents the insert tolerance and the 'G' denotes that the insert has a chipbreaker on both sides. This design allows for a strong cutting edge and the ability to perform both roughing and finishing operations. The double-sided capability makes them cost-effective and efficient. Wayleading Tools offers a wide variety of WNMG inserts tailored to different materials and applications.Key Features of WNMG Inserts Shape: Trigon (80-degree angle) Clearance Angle: Neutral Application: Turning Double-sided: YesApplications of WNMG InsertsWNMG inserts are commonly used in a variety of turning applications, including: External Turning: Machining the outer diameter of a workpiece. Internal Turning (Boring): Machining the inner diameter of a workpiece. Facing: Machining the end face of a workpiece. Profiling: Creating complex shapes on a workpiece.Selecting the Right WNMG InsertChoosing the appropriate WNMG insert is crucial for optimal performance. Consider these factors:1. Material to be MachinedThe material of the workpiece significantly impacts insert selection. Different materials require different grades and geometries. Here's a basic guideline: Steel: Choose a grade with good toughness and wear resistance. Stainless Steel: Opt for a grade with high heat resistance and edge strength. Cast Iron: Select a grade with good wear resistance and vibration dampening. Aluminum: Use a grade with a sharp cutting edge and good chip evacuation. Titanium: Choose a grade with high heat resistance and chemical inertness.2. Grade SelectionInsert grades are typically designated by a combination of letters and numbers that indicate the material and coating. Common grades include: Carbide: General-purpose grade for a wide range of materials. Cermet: Excellent surface finish and wear resistance for finishing applications. Coated Carbide: Enhanced wear resistance and tool life. TiN, TiCN, and Al2O3 are common coatings.3. Geometry and ChipbreakerThe geometry of the insert, including the chipbreaker, plays a critical role in chip control and cutting performance. Different chipbreakers are designed for different applications, such as roughing, finishing, and medium machining. Wayleading Tools experts can help you select the optimal geometry for your specific needs.4. Size and Nose RadiusThe size of the WNMG insert and its nose radius influence the surface finish, cutting forces, and stability of the machining process. Larger nose radii are generally used for roughing operations, while smaller nose radii are preferred for finishing.Troubleshooting Common IssuesEven with careful selection, machining problems can arise. Here are some common issues and potential solutions: Chipping: Reduce cutting speed or feed rate. Consider a tougher grade. Wear: Increase cutting speed or use a more wear-resistant grade. Check coolant supply. Vibration: Reduce cutting speed or feed rate. Ensure workpiece and machine stability. Consider using a dampened toolholder. Poor Surface Finish: Reduce feed rate. Use a sharper insert geometry or a smaller nose radius.WNMG Insert Sizes and DesignationsWNMG inserts are available in various sizes, designated by a standard coding system. Here's a breakdown of a typical designation (example: WNMG080408): W: Insert Shape (80° Trigon) N: Relief Angle (0° Neutral) M: Tolerance Class G: With hole and chip breakers 08: Cutting Edge Length (8mm) 04: Insert Thickness (4.76mm) 08: Corner Radius (0.8mm)Benefits of Using WNMG Inserts Versatility: Suitable for a wide range of turning applications. Cost-Effectiveness: Double-sided design maximizes cutting edges. High Performance: Excellent material removal rates and surface finish. Wide Availability: Readily available from suppliers like Wayleading Tools.Example of WNMG Insert SelectionLet's say you need to machine a batch of 4140 steel parts with a moderate hardness. You need to rough turn the outside diameter and then perform a finishing pass to achieve a smooth surface. Here's a possible insert selection strategy: Roughing: Select a WNMG insert with a tougher carbide grade (e.g., a P25 grade) and a larger nose radius (e.g., 0.8mm) to withstand the higher cutting forces. Choose a chipbreaker designed for medium to roughing applications. Finishing: Select a WNMG insert with a finer-grained carbide or cermet grade and a smaller nose radius (e.g., 0.4mm) to achieve a superior surface finish. Choose a chipbreaker designed for finishing applications.ConclusionWNMG inserts are a versatile and cost-effective solution for a wide range of turning operations. By understanding the key features, selection criteria, and troubleshooting tips outlined in this guide, you can optimize your machining processes and achieve superior results. Remember to consult with tooling experts at Wayleading Tools for personalized recommendations based on your specific application needs.Table: Common WNMG Insert Grades and Their Applications Grade Material Application P25 Steel General purpose turning of steels M20 Stainless Steel Turning of austenitic stainless steels K10 Cast Iron Turning of grey cast iron H10 Aluminum Turning of aluminum alloys