Tungsten Carbide Guide for Mold and Die Makers

Introduction

Tungsten carbide has become essential for mold and die makers seeking long tool life and consistent part quality. This guide covers the key considerations for using carbide in tooling applications.

When to Use Carbide

Carbide is justified when production volumes are high, material is abrasive, or part tolerances are tight. For short runs or prototype work, steel may be more economical. Evaluate cost per part, not just tooling cost.

Machining Carbide

Carbide can only be machined with diamond grinding wheels or EDM. Traditional cutting tools cannot process it. Plan carbide processing accordingly and work with experienced suppliers for complex geometries.

Mounting Considerations

Carbide components should be mounted with uniform support. Avoid point loading or excessive clamping pressure. Steel backup rings and proper clearances help distribute stresses evenly.

Design Best Practices

Generous radii, uniform wall thickness, and smooth transitions prevent stress concentrations. Avoid sharp internal corners where cracks typically initiate. Design for grinding accessibility.

Grade Selection

Match grade to application. Use hard grades for wear-critical surfaces, tough grades for impact. When in doubt, consult with a carbide supplier who can recommend the optimal grade.

Conclusion

Tungsten carbide offers significant benefits for mold and die makers when used correctly. Understanding its properties, machining requirements, and design considerations leads to successful tooling.

References

GB/T 7714: GUPTA R, SONG J. Powder metallurgy processing and mechanical properties of cemented tungsten carbide composites[J]. International Journal of Refractory Metals and Hard Materials, 2020, 91: 105246.

APA 7th: Gupta, R., & Song, J. (2020). Powder metallurgy processing and mechanical properties of cemented tungsten carbide composites.

MLA 9th: Gupta, R., and J. Song. "Powder Metallurgy Processing and Mechanical Properties of Cemented Tungsten Carbide Composites."