Dongguan Yexin Intelligent Technology Co., Ltd.
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CNC Machining Stainless Steel Parts Custom CNC Milling Machine Parts Steel
CNC Machining Products Turning Aluminum Parts
CNC (Computer Numerical Control) machining is an automated process that involves using a
machine to remove material from raw stock based on computer-generated instructions.
It is applicable to a wide range of materials, from expanded polyurethane foam to nickel superalloys.
Common applications for CNC machining include manufacturing, crafting ornamental furniture,
and producing turbine blades.
The cost of CNC machining is influenced by factors such as precision requirements, surface finish,
quantity, material selection, and the complexity of the part being produced.
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Cost Considerations for CNC Machining Materials
The cost of materials in CNC machining can fluctuate significantly due to the extensive array of
available options. Each material carries its unique price tag, and the inherent physical properties
of each material play a substantial role in determining machining costs.
For those seeking to manufacture metal components, Aluminum 6061 stands out as the most
cost-effective choice.
On the other hand, ABS ranks as the most budget-friendly option among materials.
As for the influence of machining complexity on costs, stainless steel serves as an illustrative example.
Its inherent hardness, surpassing that of aluminum, renders it more challenging to machine,
consequently elevating the overall machining expenses.
Here is a comprehensive overview of the most popular materials.
| The Most Popular Materials | |
| Name | Characteristics |
| Aluminum 6061 | Good strength-to-weight ratio, excellent machinability, low hardness |
| Stainless Steel 304 | Excellent mechanical properties, resistant to corrosion & acid, relatively difficult to machine |
| Brass C360 | High ductility, excellent machinability, good corrosion resistance |
| ABS | Excellent impact resistance, good mechanical properties, susceptible to solvents |
| Nylon (PA6 & PA66) | Excellent mechanical properties, high toughness, poor moisture resistance |
| POM (Delrin) | High stiffness, excellent thermal & electrical properties, relatively brittle |
| Surface Finishes | ||
| Name | Applicable to | Machining marks |
| As machined | Metals, Plastics | Visible, light surface scratches |
| Smooth machining | ||
| Fine machining | Metals | Slightly visible |
| Polishing | Metals | Removed on primary surfaces |
| Bead blasting | Metals | Removed for non-cosmetic, removed on primary surfaces for cosmetic |
| Brushing | Metals | |
| Anodizing Type II | Aluminum | |
| Anodizing Type III | Aluminum | Visible under anodizing |
| Black oxide | Copper, Stainless steel, Alloy steel, Tool steel, Mild steel | Visible |
| Powder coating | Metals | Removed |
| Brushed + electropolishing | Stainless steel | Removed on Primary surfaces |
Specialist Industries
CNC machining stands as a prevalent subtractive manufacturing method, with a vast array of
industries relying heavily on its capabilities.
Prominent sectors that extensively employ CNC machining encompass aerospace,automotive,
aviation, transportation, and various critical domains.
For instance, the aerospace industry demands the utmost precision in crafting airplane components
to guarantee flawless functionality and adherence to design specifications.
Company Profile
Benefits of Precision Machining
Complex machining requirements often come with high demands. To ensure your components
meet your specifications, our team of applications engineers provides design feedback.
You'll also receive:
1. Tolerances as tight as +/-0.002 in. (0.0508mm)
2. Tolerances adhere to ISO 2768
3. Fulfillment of quality requirements (including CoC, FAI, ISO 9001, and AS9100)
4. Fully machined features (no material left behind)
Capabilities
1. Linear tolerances as tight as = +/- 0.002 in.
2. Reamed holes = +/-0.0005 in.
3. Surface roughness = 63 µ in.
4. GD&T (material and geometry dependent)
5. Flatness = 0.005 in. for parts under 1/10-in. thick, 0.002 in. for parts over 1/10-in. thick
6. Parallelism = 0.010 in. for materials smaller than 6 in. x 12 in., 0.015 in.
for materials larger than 6 in. x 12 in.
7. True position (two-plane and three-plane) = 0.015 in.
8. Profile of a surface = 0.015 in.
Enhancing CNC Machined Parts: Post-Processing and Surface Finishes
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.