Sintering Furnace

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Jewelry Bright Annealing Furnace

A specialized vacuum bright heat treatment solution for gold, silver, platinum, and K-gold jewelry. By using high-vacuum purging and protective atmospheres, it ensures no oxidation or discoloration during annealing, preserving the original luster and significantly reducing polishing los


Product Overview

This series of jewelry bright annealing furnaces is specifically designed to address the oxidation and material loss challenges in high-end jewelry manufacturing. Using a precision-sealed stainless steel muffle tank combined with high-vacuum systems and protective atmospheres (H2/Ar/N2), the furnace provides bright annealing up to 950°C. It effectively eliminates casting or processing stresses while ensuring extreme surface purity.

Key Application Values

  • Zero Oxidation Loss: Operating in an absolute protective environment prevents the formation of oxide layers, maximizing the protection of precious metal weight.
  • Perfect Color Retention: Annealed gold and silver jewelry maintain their original mirror-bright finish and natural color, allowing for direct transition to setting or testing.
  • Extreme Control Accuracy: ±0.1°C precision prevents risks of deformation or melting caused by temperature fluctuations.
  • Clean Production: Dust-free design and high-quality seals ensure no impurities are introduced, meeting the requirements of high-end luxury goods.

Technical Specifications

Item Specifications
Rated Temperature 950°C (Stable long-term operation)
Control Accuracy ±0.1°C (Segmented PID regulation)
Temperature Uniformity ±3°C to ±5°C (Multi-zone heating)
Ultimate Vacuum 10-1 Pa to 10-3 Pa (Optional)
Atmosphere N2, Ar, H2 (Precisely adjustable)
Loading Type Vertical (Top/Bottom) or Horizontal (Customizable)

Click to download detailed information:

-bright-annealing-furnace-for-jewelry.pdf

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