1. Why Tungsten Carbide Blades
Tungsten carbide blades combine extreme hardness, wear resistance and edge retention, allowing them to cut materials that destroy steel blades and to run far longer between regrinds. The carbide grade is selected by the application: harder grades for wear resistance, tougher grades for impact resistance. The result is higher productivity and lower blade cost per cut.
2. Circular Blades
Circular carbide blades are used for cutting, slitting and scoring in the paper, packaging, metal and plastic industries. They cut thin sheet, foil, film and laminates with a clean edge and long life. The blade diameter, thickness, edge geometry and bore are specified by the machine and the material.
3. Straight Blades and Knives
Straight carbide blades and knives are used in guillotine shears, granulators and woodworking, where a long, straight cutting edge is required. They cut metal sheet, plastic, rubber and composites, and their wear resistance keeps the edge sharp through long production runs. The blade profile and edge angle are matched to the material.
4. Slitter and Shear Blades
Slitter blades are used in pairs to slit wide webs of paper, film, foil and thin metal into narrow strips. Shear blades cut thicker material in presses and shears. Both types demand precise geometry, tight tolerances and a grade that balances edge sharpness with impact resistance, because the blades are loaded dynamically.
5. Specialty Cutting Tools
Specialty carbide blades include machine-knife inserts, saw tips, scoring wheels and custom profiles for specific processes. These are designed with the customer for the material, speed and edge requirement of the process. The grade, edge geometry and coating are selected together to maximize the blade life and cut quality.
6. Selection Criteria
Define the material, thickness, cutting speed and required edge life.
Select the blade type and geometry by the machine and process.
Choose the carbide grade and toughness by the impact and wear load.
Confirm the tolerances and finish with the manufacturer.
7. FAQ
Q1: What are tungsten carbide blades used for? Cutting, slitting, shearing and scoring hard and abrasive materials in paper, packaging, metal, plastic and wood industries.
Q2: Why choose carbide over steel blades? Hardness and wear resistance give longer edge life, higher speeds and lower cost per cut.
Q3: What types of blades exist? Circular blades, straight knives, slitter and shear blades, and specialty cutting tools.
Q4: How is the grade selected? Harder grades for wear resistance, tougher grades for impact, matched to the process load.
Q5: Can blades be reground? Yes, carbide blades can be reground several times, extending the total service life.
Q6: What should I specify? Blade type, dimensions, edge geometry, grade, tolerance and the material and speed of the process.
