NXF Group YG6A (ISO K10 Grade) Cemented Tungsten Carbide Teeth Large Size Woodworking Circular Saw Blade

1. Raw Material Selection and PreparationSelect high-speed steel (HSS), tungsten carbide (WC) inserts, and alloy steel (e.g., 65Mn) as base materials according to application scenarios (wood cutting, metal cutting). Cut steel plates into circular blanks of specified diameters using laser cutting or flame cutting, and prepare carbide inserts with precise size through powder metallurgy.

2. Blank Machining- Turning: Use a CNC lathe to machine the outer circle, inner hole, and end face of the steel blank to ensure the concentricity and flatness of the saw blade base.- Drilling: Drill mounting holes, expansion slots, and heat dissipation holes on the blank with a CNC drilling machine, and deburr the holes to avoid stress concentration.

3. Tooth Forming- Gear hobbing/Milling: Adopt CNC gear hobbing machines or milling machines to mill the saw teeth on the blank, and process different tooth forms (flat tooth, alternate top tooth, ladder flat tooth) according to cutting requirements.- Tooth Groove Polishing: Polish the tooth grooves with abrasive tools to remove burrs and ensure the smoothness of the tooth edges.

4. Welding of Carbide Inserts (for TCT Saw Blades)- Braze Welding: Fix the carbide inserts in the tooth grooves, and use silver-based brazing alloy for high-frequency induction welding to ensure firm combination between inserts and the base.- Post-welding Cooling: Cool the welded saw blade slowly to room temperature to avoid thermal cracks caused by rapid cooling.

5. Heat Treatment- Quenching: Heat the saw blade base to 800–900°C and quench it in oil or water to improve hardness and wear resistance.- Tempering: Temper the quenched saw blade at 200–300°C to eliminate internal stress and increase toughness, preventing brittle fracture during use.

6. Tooth Grinding and Sharpening- Use a CNC saw blade sharpening machine to grind the rake face, clearance face, and cutting edge of the saw teeth, ensuring the sharpness and angle accuracy of the cutting edge (e.g., rake angle 10–15°, clearance angle 8–12°).- For carbide saw blades, perform diamond grinding to achieve a mirror finish on the cutting edge.

7. Surface Treatment- Coating: Apply TiN, TiCN, or TiAlN coating on the saw blade surface and teeth through physical vapor deposition (PVD) to enhance corrosion resistance and reduce cutting friction.- Anti-rust Treatment: Spray anti-rust oil on the uncoated parts, or conduct passivation treatment on the steel base to prevent oxidation.

8. Dynamic Balancing Test- Place the saw blade on a dynamic balancing machine to detect and correct the unbalance amount. Ensure the unbalance error is within 0.5g·cm to avoid vibration during high-speed rotation.

9. Quality Inspection- Conduct dimensional inspection (outer diameter, inner hole size, tooth pitch) with a caliper and micrometer; check the sharpness of the cutting edge and the firmness of the carbide inserts.- Perform a cutting test on sample saw blades to verify cutting efficiency and surface finish of the workpiece.

10. Packaging and Warehousing- Wrap qualified saw blades with anti-scratch plastic film, and pack them in cartons or plastic boxes with foam padding. Mark product specifications, materials, and batch numbers on the package.- Store the saw blades in a dry, ventilated warehouse to avoid dampness and corrosion.