Custom Brass Jewelry Manufacturer: Jewelry Manufacturing Process

Raw Material Selection and Preparation

Brass is the fundamental material for brass jewelry manufacturing, and its quality directly affects the durability, luster, and wearing experience of the final product. Fulcol has accumulated rich experience in raw material selection and handling, ensuring that each piece meets high standards from the very beginning. The main aspects include:

Brass Material Characteristics

• Composed of copper and zinc, with copper content typically 60%-80% and zinc 20%-40%.
• Offers good corrosion resistance, moderate hardness, and natural metallic luster.
• Suitable for rings, bracelets, necklaces, and earrings, combining workability with decorative appeal.

Raw Material Processing

• Cutting: Precision cutting machines are used to cut brass sheets or rods to the required size, ensuring smooth edges and no burrs.
• Melting: Brass is heated in high-precision furnaces to around 900℃–950℃, ensuring full fusion of the copper-zinc alloy, minimizing porosity and defects.
• Alloy Adjustment: Copper and zinc ratios are adjusted according to design requirements to achieve ideal hardness and luster, while ensuring workability and plating quality.

Through these steps, Fulcol ensures reliable raw material quality, providing a solid foundation for subsequent wax modeling, casting, and processing stages, guaranteeing the high quality and consistency of brass jewelry from the source.

Wax Modeling and Casting Process

Wax modeling is the first step in precision casting of brass jewelry and a crucial part of the entire manufacturing process. Fulcol uses high-precision wax carving machines or hand-carving techniques to create complex shapes, ensuring rich details and smooth surfaces. The accuracy of the wax model directly determines the detail integrity of the final casting, generally maintaining a tolerance within ±0.05mm.

After the wax model is completed, it enters the lost-wax casting process, which includes:

• Mold Encapsulation: The wax model is encased in high-temperature-resistant plaster or ceramic shells to form a casting mold.
• Wax Melting and Removal: Heating the mold melts and removes the wax, leaving a cavity.
• Brass Melting and Pouring: Brass is melted to 950℃–1000℃ and poured into the mold to fully fill the cavity.
• Cooling and Demolding: After cooling, the mold shell is broken to remove the casting.

Temperature control and metal flow are critical. Too low temperatures may cause porosity, while too high can lead to oxidation or blurred details. Fulcol strictly monitors furnace temperature and metal flow to reduce casting defects and improve yield. The cast pieces are then inspected for surface flaws and dimensional deviations, providing a reliable basis for further processing.

Forging, Engraving, and Polishing

After casting, brass jewelry enters the forging and engraving stage, a key step from rough blanks to refined finished products. Forging includes pressing, stretching, and stamping to adjust the jewelry shape, enhance strength, and optimize surface structure. Fulcol combines CNC pressing machines with hand hammering to achieve high precision while retaining a handcrafted feel.

Engraving is used to present intricate textures, patterns, and brand logos, employing micro-engraving machines, laser engraving, or skilled hand engraving. The key is to control the tool angle and depth while strictly following the design drawings to ensure the final product matches the original design.

Polishing enhances the jewelry’s texture and wearing comfort. Fulcol typically uses a three-step polishing method:

• Rough Polishing: Removes burrs and surface imperfections.
• Intermediate Polishing: Smooths the surface for uniform texture.
• Fine Polishing: Uses polishing compound and high-speed buffing wheels to achieve a mirror finish.

Proper control of polishing pressure and speed not only reduces material loss but also ensures each piece achieves jewelry-grade surface quality and provides a solid foundation for subsequent plating.

Plating and Surface Treatment

Plating and surface treatment are crucial in brass jewelry manufacturing to enhance appearance and durability. Fulcol combines advanced equipment with professional techniques to ensure each piece meets high standards. Key operations include:

Plating Process

• Metal Selection: Common plating layers include gold, silver, and copper, chosen according to design and customer requirements.
• Process Control: Controls current density, plating time, and solution composition to ensure uniform plating and strong adhesion.
• Equipment Usage: Automated plating equipment combined with manual monitoring ensures plating thickness generally between 0.5–2 microns.

Anti-Oxidation Treatment

• Coating Protection: Transparent protective coatings or sealing varnishes prevent brass discoloration.
• Chemical Protection: Chemical agents enhance durability and extend plating life.
• Multiple Layers: For high-humidity or high-friction environments, multi-layer protection ensures long-lasting luster.

Surface Texture Design

• Brushed, Matte, or Mirror Finish: Different surface treatments achieve various visual effects to satisfy design diversity.
• Combined Techniques: Brushing combined with mirror areas or partial plating with matte finish enhances jewelry depth and design complexity.

Inspection and Quality Control

• Thickness Measurement: Plating thickness is measured to ensure uniformity.
• Adhesion Testing: Ensures plating does not easily peel during use.
• Gloss Testing: Surface brightness is tested for consistent appearance.

By systematic control of plating and surface treatment, Fulcol ensures jewelry is both visually appealing and durable, meeting the high standards of Custom Brass Jewelry Manufacturer and wholesale brass jewelry clients.

Fulcol’s Manufacturing Expertise and Professional Techniques

Fulcol, as a professional Custom Brass Jewelry Manufacturer, leverages over 20 years of experience to maintain an efficient and reliable manufacturing system. Its core expertise and process advantages include:

• Precise Design & 3D Modeling: Uses professional design thinking and 3D modeling to turn client concepts or sketches into producible models, identifying potential issues in advance to improve accuracy and efficiency.
• High-Precision Casting & Engraving: Strictly controls melting temperature and metal flow to reduce porosity and defects. Combines laser engraving and hand engraving to precisely render complex textures and brand logos.
• Polishing & Surface Treatment: Uses three-step polishing and automated plating to achieve brushed, matte, or mirror finishes. Each piece is checked for gloss and adhesion, ensuring durability and beauty.
• Flexible Customization & Small-Batch Production: Supports low minimum order quantities and rapid sample production. Materials, finishes, plating, and packaging can be customized according to client needs, ensuring product consistency.
• End-to-End Production Management & Quality Assurance: Every stage from raw materials to packaging follows strict standards. Process records and optimization ensure each wholesale brass jewelry and custom product meets design and market requirements.
• Innovative & Sustainable Processes: Uses eco-friendly materials, nickel-free and lead-free plating, and optimized production processes while integrating design trends and material innovation to deliver aesthetically pleasing, durable, and market-ready jewelry collections.

The high quality of brass jewelry relies on every meticulous process, from raw material selection, wax casting, forging and engraving, polishing, to plating and surface treatment. Each step determines the refinement and durability of the final piece. Fulcol, as a professional Custom Brass Jewelry Manufacturer, leverages rich experience, advanced equipment, and optimized processes to provide high-quality, customizable brass jewelry, fulfilling both wholesale brass jewelry and personalized needs. From concept to finished product, every stage adheres to precision, professionalism, and integrity, ensuring the jewelry is not only beautiful and refined but also durable and marketable.