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Brass & 925 Silver Jewelry Production

Brass & 925 Silver Jewelry Production Process | Lean Manufacturing Flow

Brass & Silver Jewelry Lean Production Flow

Complete Professional Manufacturing Process

Main Production Flow Chart

1. R&D & Design
2. Prototype Making
3. Rubber Mold Opening
4. Wax Injection & Wax Trimming
5. Wax Tree Assembly & Plaster Pouring
6. Baking & Metal Casting
7. Acid Pickling
8. Filing & Trimming
9. Lock Clasp & Assembly
10. Stone Setting & Micro-setting
11. Polishing & Grinding
12. Electroplating & Surface Treatment
13. Final QC Inspection
14. Packaging & Warehousing

Detailed Process Explanation

1. Prototype Stage

  • Concept Design & 3D Modeling
  • 3D Laser Printing (Wax / Resin)
  • Manual Finishing & Master Silver Sample

2. Molding & Waxing Stage

  • Rubber Molding
  • Manual Mold Cutting
  • Wax Injection (70°C–75°C)
  • Wax Trimming & Defect Removal

3. Casting Stage

  • Wax Tree Assembly
  • Plaster Pouring & Vacuum Defoaming
  • Baking & Dewaxing (700°C–750°C)
  • Metal Melting & Casting
  • • Silver: 925 Silver (92.5% Silver + 7.5% Copper)
  • • Copper: Eco-friendly Brass / Bronze
  • • Equipment: Vacuum Centrifugal Casting Machine

4. Metal Working Stage

  • Plaster Removing & Cutting
  • Acid Pickling (Remove Oxide Layer)
  • Filing, Trimming & Laser Welding Assembly

5. Setting & Finishing Stage

  • Rough Mechanical Polishing
  • Stone Setting: Micro-setting, Prong Setting, Bezel Setting
  • Manual Fine Polishing (Mirror Finish)

6. Plating & Final Process Stage

  • Ultrasonic Cleaning
  • Electroplating
  • • Copper: Base Plating + Gold / Rhodium Plating
  • • Silver: Direct Rhodium / 18K Gold Plating
  • • Optional: Anti-tarnish Coating
  • Final QC Inspection
  • Labeling, Packaging & Warehousing