Precision Brass Die Casting Parts – Engineered for Performance and Reliability
Ningbo Hansheng Machinery Parts Co., Ltd. (Ningbo Yifei Machinery Parts Co., Ltd.) is a specialized Brass Die Casting Parts manufacturer and supplier based in Ningbo, Zhejiang, China. Founded in 2003, we operate a 5,000 m² factory with an ISO 9001:2000 quality assurance system. Our brass die casting range serves industries including automotive, marine hardware, electrical control, medical equipment, valves, pump impellers, and engineering machinery. We deliver custom parts with tight tolerances, complex geometries, and consistent mechanical properties.
Our Brass Die Casting Range
We supply four product families under this category, each designed for specific application requirements:
| Product |
Typical Application |
Key Feature |
| Die Casting Grass Hilt |
Lawn and garden tools, decorative hardware |
High dimensional stability, polished finish |
| Grass Key Made by CNC Machining |
Precision keys, lock components, small mechanical parts |
Post-cast CNC machining for tight tolerances |
| Die Casting Grass Dolphin |
Ornamental and marine hardware |
Corrosion-resistant, fine surface detail |
| Metal Crafts by Die Casting and CNC Machining |
Custom decorative and functional metal parts |
Combined die casting and CNC for complex shapes |
Material and Alloy Options
Brass is a copper-zinc alloy offering excellent corrosion resistance, good electrical and thermal conductivity, and high strength. We work with standard yellow brass (e.g., C36000, C38500) and can adjust the copper-zinc ratio to meet specific mechanical or color requirements. Leaded brass alloys are available for improved machinability. For applications requiring enhanced corrosion resistance in seawater or chemical environments, we recommend aluminum brass or tin brass variants.
Critical Specifications and Process Control
- Die casting pressure: 3,000–10,000 psi, with plunger speeds from 10 to 250 in/s.
- Mold temperature: Controlled between 600°F and 1,300°F using water or oil circulation.
- Mold life: Up to 50,000 shots for yellow brass; 10,000 shots for higher-temperature alloys.
- Surface finish: Matte or satin cavity finish for proper surface tension; post-cast polishing available.
- Degassing: Nitrogen inert gas degassing to remove dissolved hydrogen and prevent porosity.
- Dimensional tolerance: Typically ±0.005 in. per inch, with tighter tolerances achievable via secondary CNC machining.
Application Fit and Industry Use
Our brass die castings are used in:
- Automotive: Electrical connectors, valve bodies, pump housings, radiator components.
- Marine hardware: Valves, pump impellers, fittings requiring seawater resistance.
- Electrical/electronic: Switch components, terminals, heat sinks.
- Industrial machinery: Gears, bearings, drive shafts, and fluid-handling parts.
- Medical and precision equipment: Surgical tools, sensor housings, instrument frames.
Quality Assurance and Acceptance
We implement 100% dimensional inspection and material verification per ISO 9001:2000. Each production lot is traceable to raw material certificates. We conduct internal audits to ensure process consistency. For critical applications, we can provide first-article inspection reports and material test certificates upon request.
Information We Use to Configure Your Solution
To prepare an accurate quotation and design proposal, we need the following from your team:
- 2D drawing or 3D model (STEP/IGES preferred) with critical dimensions and tolerances.
- Specified brass alloy or performance requirements (corrosion resistance, conductivity, strength).
- Surface finish requirements (as-cast, polished, plated, or painted).
- Annual volume and expected order quantity (for mold life and cost optimization).
- Any secondary operations needed (CNC machining, threading, assembly).
- Target delivery timeline and packaging requirements.
FAQs
What brass alloys do you use for die casting?
We primarily use yellow brass (copper-zinc) alloys, including leaded brass for improved machinability. For specialized applications, we can supply aluminum brass or tin brass for enhanced corrosion or wear resistance.
What is the typical lead time for a custom brass die casting order?
Lead time depends on mold complexity and order quantity. Typically, mold fabrication takes 4–6 weeks, and first samples are available within 2 weeks after mold approval. Production lead time is quoted per project.
Can you provide post-casting CNC machining?
Yes. We offer CNC machining as a secondary operation for features requiring tighter tolerances, threaded holes, or complex geometries not achievable in the die cast state.
Do you offer surface finishing options?
Yes. We provide polishing, plating (nickel, chrome), painting, and powder coating. The standard as-cast surface is matte or satin; we can achieve a high-gloss finish with additional processing.
How do you ensure quality for large production runs?
We follow ISO 9001:2000 procedures with in-process inspection, first-article approval, and final dimensional checks. Each batch is traceable to raw material lots, and we maintain records for audit.