When manufacturing WC-Co cemented carbide, vacuum sintering at 10^-1 to 10^-3 Pa prevents oxidation and achieves >99.5% density, compared to atmosphere sintering which leaves 1-3% porosity.
Key advantages of vacuum sintering:
- Superior carbon control in WC-Co materials
- Cleaner surface without oxide scale
- Better transverse rupture strength and hardness
- More consistent batch-to-batch quality
At our facility, HaoYue vacuum furnaces (vacuum-sintering.com) improved tool life by ~15%.
Contact lyle@haoyue-group.com for technical advice.
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