CNC Precision Parts CNC Turning And Milling Processing Aluminum CNC
Parts Manufacturer
CNC machining finds its best application in one-off manufacturing projects and in the
low-to-medium volume production range, spanning from several hundred to 1000 parts.
It stands out as the most economically viable option for the production of metal prototypes,
making it a preferable choice. Furthermore, CNC machining is the ideal selection when the parts
in question require exceptionally tight tolerances.
Product Details
| Common Metal Materials for CNC Machining |
| Metal 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 |
| 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 |
| 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 |
| Titanium | Excellent strength to weight ratio, used in aerospace, automotive, and medical industries |
| Steel Mild Low Carbon | High machinability and weldability, high stiffness; good mechanical properties, machinability, and weldability at low cost |
| 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 |
CNC Machining Applications
1. Aerospace: The aerospace industry relies on CNC machining to produce intricate and
high-precision components for aircraft and spacecraft, ensuring optimal performance and safety.
2. Automotive: CNC machining is integral to the automotive sector for crafting precise
components, contributing to the efficiency and reliability of vehicles.
3. Aviation: Similar to aerospace, the aviation industry benefits from CNC machining's precision
in manufacturing components that meet stringent safety and performance standards for aircraft.
4. Transportation: The broader transportation industry, including rail and maritime sectors,
employs CNC machining to fabricate robust and precise components that withstand challenging
operational conditions.
Company Profile
FAQ's
1. What's the general surface texture of CNC milled and turned parts?
Typically, machined milled parts exhibit a surface roughness of around 3.2μm (or 1.6μm for newer
machines). On the other hand, turned parts can achieve a finer surface with a roughness of 0.8μm.
This indicates that the machining speed does not necessarily need adjustment, highlighting the
precision attainable in turning processes.
2. Factors Influencing CNC Machining Costs:
The cost of CNC machining a part is influenced by several key factors, including:
1. Material: Variations in material costs arise as some materials, such as aluminum, are more
cost-effective to machine than others like Inconel due to increased tool wear and slower cutting speeds.
2. Complexity: Parts with intricate features incur higher machining costs. Complex surface shapes,
for instance, are notably more expensive to machine compared to flat surfaces.
3. Tolerances: Stringent dimensional tolerances escalate machining costs. Specifying unnecessarily
tight tolerances on non-critical features can contribute to increased CNC machining expenses.
4. Surface Finish: Achieving mirror finishes necessitates specialized tooling and machining strategies,
extending machining time and subsequently increasing costs.
5. Quantity: Low-volume production inherently comes at a higher cost per part than large-volume
production. This is because initial setup and programming costs are distributed over a greater number
of parts in large-volume production.
3. How much import duty will I need to pay for my goods?
The specific import duty for your goods varies, and there isn't a one-size-fits-all answer.
For customers in Australia, new CHAFTA regulations enable a gradual implementation of duty-free
imports. Import duties are diverse and contingent on the type of goods being imported.
Globally, most countries adhere to international Harmonized System (HS) codes, categorizing almost
all commercial trade goods.
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