Dongguan Yexin Intelligent Technology Co., Ltd.
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CNC Parts Custom Milling CNC Spares Parts Manufactur CNC Machining Part
CNC machining, short for computer numerical control machining, is a subtractive manufacturing
technique that utilizes computerized controls and specialized machine tools to sculpt and shape
materials by removing layers from a solid block. Precise cuts are programmed based on specific
tools and machinery, which execute the machining process autonomously.
Product Details
Materials Used in CNC Machining
CNC machining is a versatile process employed across a wide range of materials, each with its
own ideal machining parameters, including speeds and feeds.
Here are some of the most common materials used:
1. Metals
Metals are the most frequently machined materials, ranging from easily workable brass to
robust nickel superalloys like Inconel. CNC machining in metal finds application in various
industries, including the production of injection molds, shafts, and gears.
2. Plastics
While injection molding is the primary method for plastic part production, CNC machining is
utilized for specific plastic components.
Common plastic materials include ABS (acrylonitrile butadiene styrene), nylon, and polycarbonate.
Plastic CNC machining is suitable for valve bodies, bushings, and prototypes to assess part
functionality before investing in costly molds.
3. Wood
CNC routers are commonly employed for wood cutting, offering a cost-effective alternative to
metal-cutting CNC machines. Wood CNC machining is often used for decorative purposes,
such as crafting furniture, window frames, and ornamental panels.
4. Foam
Polyurethane foam, both closed-cell and open-cell varieties, is frequently used in CNC machining
applications. CNC routers can shape foam blocks to create custom packaging for high-value items,
such as toolboxes designed to securely transport tools.
5. Composites
CNC machines play a crucial role in processing composite materials like aramid, fiberglass, and
carbon fiber. These abrasive materials require precise machining to add fastener holes and trim
components in industries like aerospace and marine manufacturing.
| Common Materials for CNC Machining | |
| Material | Properties |
| Aluminum | 2024: Good fatigue resistance and strength; excellent toughness at moderate to high strength levels; improved fracture toughness |
| 6061: Excellent machinability, low cost, and versatility | |
| 7075: High strength, hardness, low weight, and heat tolerance | |
| Brass | Versatile and highly attractive copper/zinc alloy with warm yellow color accommodates severe forming/drawing |
| Copper | High ductility and high electrical and thermal conductivity; develops attractive blue-green surface patina over time |
| Stainless Steel | Excellent machinability and outstanding uniformity; good workability and weldability, high ductility and formability |
| Steel Alloy | Mix of chromium, molybdenum, and manganese yields toughness, good torsional and fatigue strength |
| Steel Mild Low Carbon | High machinability and weldability, high stiffness; good mechanical properties, machinability, and weldability at low cost |
| Titanium | Excellent strength to weight ratio, used in aerospace, automotive, and medical industries |
| ABS | Excellent impact resistance, good mechanical properties, susceptible to solvents |
| Nylon | Excellent mechanical properties, high toughness, poor moisture resistance |
| POM | High stiffness, excellent thermal & electrical properties, relatively brittle |
Post-processing and surface finishes for CNC machining
CNC-machined parts as they emerge from the machine often exhibit visible tool marks, a feature
that may not align with your specific part requirements.
Fortunately, there exists a multitude of post-processing techniques aimed at enhancing the surface
appearance and elevating attributes such as wear resistance, corrosion resistance, and chemical
resistance.
Methods like anodizing, bead blasting, and powder coating present viable options for refining the
final presentation of your custom parts, allowing you to achieve the desired surface quality and
performance characteristics.
| Surface Finishing Options for CNC Machining | ||
| Name | Applicable Materials | Can be Applied with |
| Alodine | Aluminum | Media Blasting, Tumbling, Type II Anodizing* Type III Anodizing*, Type III Anodizing with PTFE* |
| Anodizing | Aluminum | Media Blasting, Tumbling, Alodine* |
| Black Oxide | Steel, Stainless Steel | Media Blasting, Tumbling, Passivation |
| Electroless Nickel Plating | Aluminum, Steel, Stainless Steel | Media Blasting, Tumbling |
| Electropolishing | Steel, Stainless Steel | — |
| Hand Polishing | Acrylic | Enhanced cosmetic appearance |
| Media Blasting | Aluminum, Steel, Stainless Steel, Brass, Bronze, Copper | All post processes except Electropolish and Powdercoat |
| Nickel Plating | Aluminum, Steel, Stainless Steel | Media Blasting, Tumbling |
| Passivation | Steel, Stainless Steel | Black Oxide, Electroless Nickel Plating, Zinc Plating, Tumbling, Media Blasting |
| Powder Coating | Aluminum, Steel, Stainless Steel | — |
| Tumbling | Aluminum, Steel, Stainless Steel, Brass, Bronze, Copper | All post processes except Electropolish and Powdercoat |
| Vapor Polishing | CNC Polycarbonate (Clear, Black) | Enhanced cosmetic appearance, near optically clear applications |
| Zinc Plating | Steel, Stainless Steel | Media Blasting, Tumbling, Passivation |
Applications of CNC Machining
Parts and products produced through CNC machining find application in many industries,
including, but not limited to, the following:
Industrial, Transportation & Vehicle, Medical, Consumer
Company Profile
FAQ's
1. Do you offer Quick-Turn CNC Machining?
Certainly! We provide rapid turnaround times for CNC machining, with the option for many parts
to be completed in just 3-4 days.
We also offer an expedited service, and our dedicated team collaborates closely with you to ensure
your most urgent deadlines are met.
2. How does you ensure part quality?
Upon order confirmation, we conduct a comprehensive Design for Manufacturing (DFM) review to
identify and address any potential issues that could impact part quality.
We meticulously inspect and verify incoming materials using advanced testing equipment.
We provide final inspection reports prior to shipment.
Our real-time inspection data sharing capabilities allow us to collaborate with you in addressing
any quality concerns that may arise during production.
3. How soon can I receive my parts?
We can produce quality parts in as little as two weeks if you provide us with complete 2D and
3D CAD models. However, more complex parts with special features may have longer lead times.
Request a quote to receive more precise lead times based on your specific project.
Regarding shipping, our primary method is air freight, which typically takes a few days for delivery
from China to Europe or North America.
4. What are your shipping terms?
Our standard shipping terms are Ex Works (EXW) for both rapid prototyping and regular production
orders.
Under EXW terms, the customer is responsible for all aspects of shipping, customs clearance,
and associated fees once the goods have been dispatched from our facility.
For express shipments, we utilize Delivered Duty Unpaid (DDU) terms.
This means that the client is responsible for settling any import duties upon the goods' arrival
at their designated destination.