Precision CNC Machining Services at DZ CASTING
From Mold to Perfection: Your Complete Die Casting & CNC Machining Partner
At DZ CASTING, we understand that a high-quality die casting is often the foundation of a precision component. Our advanced **CNC (Computer Numerical Control) Machining** division is the critical next step, transforming raw castings into perfectly functional, dimensionally exact parts ready for immediate use.
We are not just a die caster; we are your integrated manufacturing solution.
Our CNC Machining Capability
We operate a modern fleet of multi-axis CNC milling and turning centers, allowing us to perform complex machining operations with micron-level accuracy. Our capabilities include:
- Multi-Axis Machining: 3, 4, and 5-axis CNC milling for complex geometries from any angle.
- High-Speed Machining: For efficient material removal and superior surface finishes.
- Precision Turning: For accurate machining of cylindrical features.
- Drilling, Tapping, and Boring: Creating precise holes and threads to exact specifications.

Refined 6-Step CNC Machining Process
Step 1: Technical Drawing Review
Analyze your CAD files (STEP/IGS/DXF) to ensure geometric feasibility and optimize for cost-effective machining.
Step 2: Material Selection & Sourcing
Source certified metals (Al6061/7075, Stainless Steel, Brass) or plastics (ABS, PEEK, Nylon) with full traceability.
Step 3: Programming & Tooling Setup
Develop precise G-code and select specialized cutting tools to achieve complex geometries and tight tolerances.
Step 4: Multi-Axis Precision Milling
Utilize 3, 4, and 5-axis CNC centers to manufacture parts with high repeatability and ±0.005mm precision.
Step 5: Surface Finishing
Apply professional treatments including Anodizing, Powder Coating, Sandblasting, or Electropolishing per your specs.
Step 6: CMM Quality Inspection
Conduct 100% dimension checks using CMM (Coordinate Measuring Machine) to guarantee every part meets the blueprint.

The DZ CASTING Integrated Advantage: Why It Matters for You
Combining die casting and CNC machining under one roof at DZ CASTING provides significant benefits:
Seamless Workflow & Single Responsibility
Your part moves from the casting cell directly to our CNC machines without external logistics. We manage the entire process, ensuring accountability, quality control, and faster lead times.
Optimal Part Design & Accuracy
Our engineers design the die casting mold with the CNC machining process in mind. We strategically add machining stock to critical features, ensuring a clean, solid surface for machining and guaranteeing perfect tolerances on every bore, thread, and sealing face.
Cost Efficiency
By eliminating multiple suppliers, you reduce administrative overhead, logistics costs, and mark-ups. We optimize the entire process to provide you with the best value.
Superior Quality Control
We implement a unified quality management system throughout both processes. From the first casting to the final machined dimension, every step is tracked and verified, ensuring full traceability and consistency.




Our Common CNC Machining Operations on Die Castings
We specialize in applying precision machining to die-cast parts, including:
- Facing & Skimming: Creating perfectly flat sealing surfaces.
- Boring & Drilling:Achieving high-precision hole diameters and locations.
- Tapping:Cutting clean, strong internal threads.
- Milling Pockets & Slots:Adding complex features that are inefficient or impossible to cast.

Your Trusted Manufacturing Partner
At DZ CASTING, we bridge the gap between casting and final assembly. Our CNC machining services ensure that the parts you receive are not just "as-cast," but are fully finished, inspection-ready, and precision-engineered components.
Let us be your single-source solution for high-pressure die casting and precision CNC machining.

CNC Machining Frequently Asked Questions (FAQ)
About Quotation and Lead Time
Q: How can I get a quote for CNC machining? What information do I need to provide?
A: To provide an accurate quote, we typically require the following:
1) 3D Model File (Preferred formats: .STEP or .IGES. Also acceptable: .SLDPRT, .X_T, etc.)
2)D Engineering Drawing (With critical dimensions, tolerances, and surface finish requirements clearly indicated).
3)Material Specification (e.g., Aluminum 6061, Stainless Steel 304, etc.)
4)Surface Finish (e.g., Anodizing, Sandblasting, Chrome Plating, etc.)
5)Estimated Quantity (e.g., Prototype or production batch).
Q: What is your standard lead time for CNC machining?
A: The standard lead time depends on part complexity and current production schedule. Generally:
1)Simple Prototypes: 3-5 business days.
2)Complex Assemblies or Multi-part Projects: 1-3 weeks.
Small-Batch Production: Please contact our sales team for a specific schedule. We always strive to accommodate urgent requests.
About Design and Files
Q: What is "Design for Manufacturability" (DFM)? Do you provide it?
A: Yes, we highly recommend and provide free DFM analysis. After you submit your design, our engineers will review your 3D model and offer professional suggestions to optimize the design for cost reduction and shorter lead times, such as:
1)Recommending more machinable geometries.
2)Advising on suitable tolerances to balance performance and cost.
3)Identifying areas that might be unmachinable or require special tooling.
Q: What file formats do you accept?
A: We accept most common CAD formats:
1)Preferred Formats (Containing Solid Data): `.STEP` / `.STP`, `.IGES` / `.IGS`
2)Native Software Formats (Also Acceptable): `.SLDPRT` (SolidWorks), `.PRT` (Siemens NX, Creo), `.IPT` (Inventor), `.X_T` (Parasolid)
3)Not Recommended for Production: `.STL` (Mesh data only, lacks precise dimensions), `.OBJ`, etc.
About Materials and Process
Q: What materials are available for CNC machining?
A: We offer a wide range of materials, including:
1)Metals: Various aluminum alloys (e.g., 6061, 7075), stainless steels (e.g., 304, 316), carbon steel, brass, titanium alloys, etc.
2)Plastics: ABS, PC (Polycarbonate), POM (Acetal), Nylon (PA), PEEK, PTFE (Teflon), etc.
If you have a specific material requirement not listed, please contact us directly.
Q: What tolerances can you achieve with CNC machining?
A: 1)Standard Tolerance: For metal parts, we can typically hold ±0.025 mm easily.
2)Precision Tolerance: With specialized equipment and processes, we can achieve ±0.0125 mm or tighter.
Please note that tighter tolerances may increase cost and machining time. We recommend applying precision tolerances only to critical functional dimensions.
About Surface Finish and Quality
Q: What surface finishing options do you offer?
A: We offer various surface finishing services to improve appearance and performance:
1)As-Machined: Standard finish from the machine, may have visible tool marks.
2)Sandblasting/Bead Blasting: Creates a uniform matte or satin texture.
3)Anodizing: Primarily for aluminum, increases surface hardness and corrosion resistance, available in various colors.
4)Plating: Such as Nickel Plating, Chrome Plating, Zinc Plating, for aesthetics and rust protection.
5)Electroless Nickel Plating: Provides a uniform, wear-resistant coating.
6)Passivation: Mainly for stainless steel, to enhance corrosion resistance.
Q: How do you perform quality control and inspection?
A: Quality is our core focus. We ensure it through:
1)First Article Inspection (FAI): Full dimensional inspection of the first part before production, with a report provided.
2)In-Process Inspection: Random checks during the production process.
3)Final Inspection: Comprehensive check of all parts before shipment.
4)Equipment: We use precision equipment like CMMs (Coordinate Measuring Machines), calipers, micrometers, optical comparators, and surface roughness testers.
About Ordering and Production
Q: What is your minimum order quantity (MOQ)?
A: For CNC machining, we have no minimum order quantity (MOQ). We welcome orders for single prototypes as well as batch production runs of thousands. Unit cost for a single piece is relatively higher, but the price per part decreases significantly with quantity.
Q: How can I track the progress of my order?
A: Once your order is confirmed, you will receive a unique order number. You can log in to our customer portal to check the real-time production status (e.g., Pending Scheduling, In Machining, In Quality Inspection, Shipped), or contact your dedicated account manager for the latest update.
