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As a specialized manufacturer with a decade of experience, Henan San Kuang Machinery Technology Co., Ltd. excels in delivering high-precision, durable alloy steel components through integrated sand casting and CNC machining. Our ODM service empowers you to bring custom part designs to life, combining the design freedom and cost-effectiveness of sand casting with the dimensional accuracy and fine finishes of advanced CNC turning and milling processes. Operating from our expansive facilities, we are committed to being your reliable partner for complex, high-performance metal parts.
Our integrated manufacturing approach offers distinct advantages:
- Design Flexibility: Sand casting is ideal for producing large, complex geometries that would be difficult or expensive to machine from solid billet. We can accommodate intricate internal passages, undercuts, and varied wall thicknesses.
- Material Excellence: We work with various grades of alloy steel, selected for properties like high strength, wear resistance, and good machinability. Common grades include 4140, 4340, and 8620, with others available.
- Precision Finishing: The cast blanks undergo precise CNC turning and milling to achieve tight tolerances, critical mating surfaces, threaded holes, and superior surface finishes required for assembly and function.
- Streamlined Workflow: Managing both casting and machining in-house ensures better quality control, reduces lead times, and provides a single point of accountability for your project.
Technical Specifications & Capabilities Overview
| Parameter Category | Specifications / Capabilities |
|---|---|
| Casting Method | Green Sand Casting & Resin Sand Casting |
| Typical Cast Part Size Range | From a few kilograms up to several hundred kilograms |
| Casting Dimensional Tolerance | Typically CT8-CT10 per ISO 8062 |
| CNC Machining Tolerance | Can achieve IT7-IT9 grades as required |
| Surface Roughness (Machined) | Ra 1.6μm to Ra 3.2μm standard, finer finishes available |
| Secondary Operations | Heat treatment, surface coating (painting, plating, etc.), balancing, assembly |
Key Benefits for Your Business:
- Cost-Effectiveness: For medium to high volumes, sand casting often provides a lower cost-per-part compared to fabrication or machining from solid.
- Reduced Lead Time: Our integrated process eliminates the need to coordinate with multiple suppliers.
- High Strength-to-Weight Ratio: Alloy steel castings provide excellent mechanical properties, suitable for demanding structural applications.
- Scalability: We support projects from prototyping through to full-scale production runs.
Backed by a robust operational foundation—including a 10,000-30,000 square meter factory and a dedicated team of 51-100 skilled professionals—Henan San Kuang has consistently served a global clientele across North America, Europe, Asia, and beyond. Our established export experience, with shipments via major ports like Shanghai and Qingdao, ensures smooth logistics. We invite you to leverage our ODM expertise to develop alloy steel components that meet your exact specifications for performance, durability, and value. Contact us today to discuss your project requirements and receive a competitive quotation.
Frequently Asked Questions (FAQ)
Q1: What is the main advantage of combining sand casting with CNC machining?
A: This combination leverages the design flexibility and cost-effectiveness of sand casting for the basic shape, while CNC machining ensures critical dimensions, holes, threads, and surfaces are produced with high precision. It's ideal for parts with complex geometries that require precise mating features.
Q2: Can you work from my existing 3D CAD drawings?
A: Absolutely. We specialize in ODM services and prefer to work directly from your 3D models (STEP, IGES, SLDPRT, etc.) and 2D drawings. This allows us to provide accurate DFM (Design for Manufacturability) feedback and a precise quotation.
Q3: What alloy steel grades are most commonly used?
A: Commonly specified grades include 4140 (good strength and toughness), 4340 (high strength), and 8620 (good case hardening properties). We can source and cast a wide range of alloy steels based on your mechanical property requirements.
Q4: What is your typical lead time for a batch of custom parts?
A: Lead time depends on part complexity, quantity, and current capacity. Generally, for a new project, expect approximately 4-8 weeks from finalized drawings to first shipment, including pattern making, casting, and machining.
Q5: Do you provide heat treatment services?
A: Yes, heat treatment (such as quenching and tempering, annealing, or normalizing) is a common secondary operation we can arrange to achieve the desired hardness and material properties for your components.
Q6: How do you ensure quality control throughout the process?
A> Our quality control includes material certification for the steel, dimensional inspection of castings and machined parts (using CMMs, calipers, gauges), and visual inspection. We can provide inspection reports and are familiar with various industry quality standards.
Q7: What file formats do you accept for part design?
A: We accept all common CAD formats, including but not limited to STEP, IGES, Parasolid, SLDPRT, PRT, and DWG/DXF for 2D drawings. Our engineering team will review them for manufacturability.
Q8: What is the minimum order quantity (MOQ) for a custom ODM project?
A: MOQ is flexible and depends on part size and complexity. We evaluate each project individually. While we can accommodate prototyping and low-volume orders, sand casting often becomes more economical at higher quantities.
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