Understanding Carbide Thermal Conductivity

Introduction

Thermal conductivity is an important but often overlooked property of tungsten carbide. It affects how tools and dies handle heat generated during cutting and forming operations.

How It Works

Tungsten carbide conducts heat significantly better than tool steel. This means heat generated at the cutting edge or die surface dissipates faster into the tool body and surrounding environment.

Benefits in Cutting

Better heat dissipation keeps the cutting edge cooler, reducing tool softening and wear. This allows higher cutting speeds and extends tool life. Carbide cuts faster because it handles heat better.

Benefits in Forming

In stamping and drawing, heat builds up from friction. Carbide's thermal conductivity helps dissipate this heat, reducing die temperature and preventing material buildup.

Factors Affecting Conductivity

Thermal conductivity varies by grade. Higher carbide content generally means better conductivity. Cobalt content and grain size also influence heat transfer properties.

Conclusion

Thermal conductivity is a key advantage of tungsten carbide over steel. Its ability to dissipate heat contributes to faster cutting, longer tool life, and better performance in forming operations.

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."