Brass jewelry

Product Overview: Brass Jewelry

Our brass jewelry products are precision-cast copper alloy parts tailored for various accessory categories, including fashion jewelry, ethnic style ornaments, handmade crafts, and custom gifts. Core products cover brass pendants, earring bases, bracelet links, necklace clasps, ring blanks, and decorative jewelry components—all crafted from high-quality brass alloys (H62, H65, H68) that balance malleability, luster, and durability. The core functions include aesthetic decoration, structural connection, and personalized customization, with technical advantages such as high-precision detail reproduction (minimum feature size ≥0.5mm), uniform surface texture, and compatibility with diverse surface finishing. Leveraging advanced precision casting technology, our brass jewelry can perfectly restore complex patterns (such as floral motifs, geometric shapes, and cultural symbols), meeting the creative needs of fashion and craft designers. Meanwhile, we supply matching auxiliary components (such as brass chains, connectors) to meet comprehensive assembly needs of jewelry manufacturers. All products comply with international jewelry safety standards (REACH, RoHS) and pass strict heavy metal detection, ensuring safe contact with human skin.

Production Processes & Workflow (Jewelry-Specific Optimization)

Combining our expertise in copper alloy casting and the special aesthetic and precision requirements of jewelry products, we adopt a refined and visualized production process to ensure the quality and decorative performance of each brass jewelry casting. The core production process (focused on investment casting for brass jewelry) includes:

1. Jewelry Design Analysis & Optimization: Our professional engineers, with rich experience in jewelry casting design, conduct in-depth communication with customers to clarify requirements (design drawings, pattern details, dimensional accuracy, assembly matching). Using CAD 3D modeling software, we optimize the design to enhance casting feasibility—for example, adjusting thin-walled structures to avoid casting defects and optimizing pattern details to ensure complete reproduction. For personalized custom designs, we provide 3D rendering confirmation before mold making to ensure consistency with customer expectations.

2. High-Quality Brass Selection & Inspection: Strictly select brass alloys suitable for jewelry applications (H62, H65, H68) with excellent casting performance, fine grain structure, and bright surface luster. These materials are specially processed to reduce impurities and ensure compliance with jewelry safety standards (heavy metal content meets REACH limits). We conduct comprehensive raw material testing, including chemical composition analysis (via spectrometer) and heavy metal detection, to ensure material safety and stability.

3. Precision Mold Making for Jewelry: For brass jewelry with complex patterns and small sizes, we adopt investment casting (lost-wax casting) mold technology. The mold is made by injecting wax into a master mold to replicate fine details, then coating with refractory material to form a ceramic shell. For small-batch custom jewelry projects, we use rapid prototyping technology (3D printed wax patterns) to shorten the mold development cycle by 30%, enabling customers to quickly launch new designs.

4. Core Casting Process (Investment Casting): Investment casting is the core process for our brass jewelry, which ensures high precision and fine detail reproduction. The ceramic shell mold is preheated to 800-900℃, then molten brass (temperature controlled at 1080-1150℃) is poured into the mold under gravity. After solidification, the ceramic shell is broken to obtain the rough brass jewelry part. This process is suitable for small-sized, complex-patterned jewelry components, with dimensional accuracy up to ±0.03mm and surface roughness Ra≤1.2μm.

5. Jewelry-Oriented Post-Casting Processing: After casting, parts undergo deburring (manual + ultrasonic cleaning) to remove residual burrs and ceramic particles. Precision polishing is then performed (mechanical polishing + manual fine polishing) to achieve a mirror-like or matte surface finish. For parts requiring assembly, we conduct precision drilling and tapping to ensure matching accuracy of holes and connectors.

6. Diversified Surface Treatment for Jewelry: Provide rich surface treatment options to meet fashion and aesthetic needs: electroplating (gold, silver, rose gold, antique copper) to enhance luster and wear resistance; oxidation coloring (black, brown, green) for vintage or ethnic style; passivation to improve corrosion resistance and maintain the original brass color; sandblasting for a matte texture. All surface treatments comply with REACH and RoHS environmental standards, ensuring safe contact with human skin.

7. Strict Jewelry-Specific Quality Inspection: Implement multi-level quality control tailored to brass jewelry. Key inspections include: dimensional inspection (via Coordinate Measuring Machine, CMM) to ensure precision; surface quality inspection (visual inspection + magnifying glass inspection) to eliminate scratches, burrs, and uneven plating; heavy metal detection to confirm compliance with jewelry safety standards; and wear resistance testing for plated parts. Only products passing all inspections can be delivered.

In addition to the core investment casting process, we also master sand casting and low-pressure casting technologies, which can be flexibly applied to large-sized brass jewelry accessories (such as decorative brass pendants for bags) or auxiliary components (such as brass jewelry display stands), providing comprehensive production support for jewelry and craft manufacturers.

Product Classification & Technical Parameters

3D Classification Table (Industry / Material / Part Type)

Technical Parameter Table

Our Core Competitiveness (Brass Jewelry Expertise)

With years of focused experience in brass jewelry casting, we have formed unique competitive advantages to serve the global fashion and craft industry:

• Jewelry-Specialized Technical Team: A team of 35+ professional engineers, We are proficient in converting creative designs into castable structures, providing professional suggestions on pattern optimization and surface treatment, and completing technical solutions within 48 hours for custom needs.

• Strong Jewelry-Oriented Production Capacity: Our 12,000-square-meter factory is equipped with 50+ sets of advanced equipment (investment casting lines, 3D printers for wax patterns, precision polishing machines, CMM, heavy metal detectors). The annual production capacity of brass jewelry and accessories reaches 500 tons, capable of meeting both small-batch custom projects and large-volume mass production needs of jewelry brands.

• Strict Quality & Safety Management System: Certified by ISO 9001:2015, REACH, and RoHS. We have established a jewelry-specific quality control system with 12+ key inspection points, including heavy metal detection and surface quality inspection, ensuring a product qualification rate of 99.8% and compliance with global jewelry safety standards.

• Jewelry Material-Focused Supply Chain: Long-term cooperation with 10+ well-known brass suppliers (specializing in jewelry-grade materials) ensures stable supply of high-purity, low-impurity raw materials. We have established a raw material traceability system to ensure each batch of jewelry materials meets safety requirements.

• Global Shipping & Jewelry Industry Service: Cooperate with 5+ international logistics companies (DHL, FedEx, Maersk) to provide flexible trade terms (FOB, CIF). We have rich experience in jewelry export, including compliance document preparation (REACH certification, customs clearance materials), with products exported to 150+ countries and regions, on-time delivery rate 99%.

• Comprehensive Quality Assurance Service: 12-month quality guarantee period for all brass jewelry. If quality problems occur due to our production (e.g., plating peeling, surface defects, excessive heavy metals), we provide free replacement or refund. We also offer lifelong technical support, including design optimization for new jewelry collections.

Why Choose Us for Brass Jewelry?

Choosing us as your brass jewelry casting supplier means you partner with a professional team that deeply understands the core demands of the fashion and craft industry. Here are the key reasons for cooperation:

• Jewelry Industry Expertise: We focus on brass jewelry, with rich experience in solving pain points such as fine pattern reproduction, aesthetic surface treatment, and safety compliance. Our technical solutions are tailored to jewelry design characteristics, ensuring creative designs are perfectly transformed into high-quality products.

• Superior Product Quality & Safety Compliance: Strict raw material selection, jewelry-specific production processes, and international certifications (REACH, RoHS) ensure our brass jewelry is safe, durable, and aesthetically pleasing, meeting market access requirements of various countries.

• One-Stop Global Service: Our professional foreign trade team provides full-process services for jewelry export, including certification application (REACH), document preparation, and logistics tracking. Global logistics partners ensure timely delivery to your designated location, even for small-batch custom orders.

• Long-Term Win-Win Cooperation: We adhere to the concept of growing with customers, providing competitive prices based on scale advantages. We actively participate in your new collection R&D stage, offering technical support to optimize design and reduce production costs while maintaining fashion appeal.

Common Casting Problems & Solutions for Brass Jewelry

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