Cheap CNC Machining Parts Steel CNC Machining Parts CNC Turning Part for Medical
CNC machining is a process involving different types of machines, all utilizing computer-controlled
tools to precisely remove material from a workpiece. The advantage of this computerized control
is that CNC machining offers significantly increased speed, precision, and accuracy compared to
traditional machining methods.
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The choice of raw material directly impacts machining costs.
Different materials have varying costs, availability, and machining characteristics.
High-performance alloys may be more expensive than common metals.
Material availability affects pricing, and considering material type is essential for cost calculation.
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 milling, characterized by its efficiency, precision, and automation, is a transformative force
across various industries. Machine shops, serving as crucial entities in the manufacturing process,
provide essential services for prototypes and full production runs.
The electronics industry relies extensively on CNC machines for crafting components such as
electronic enclosures and circuit supports. In the commercial sector, CNC cutting heads play a key
role in producing cost-effective parts, streamlining production processes.
The oil and gas industry utilizes CNC machines for the fabrication of drill bits, cylinders, pins, rods,
valves, and more. The medical industry benefits from CNC milling in the production of diverse
components, including implants, surgical equipment, and medical devices.
Lastly, the aerospace industry demonstrates a constant demand for CNC machined parts, employing
this technology to create intricate, customized components vital for aerospace equipment.
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FAQ's
1. What's the general surface texture of CNC milled and turned parts?
The surface texture of machined milled parts is commonly around 3.2μm (or 1.6μm for more
recent machines). In the case of turned parts, a finer surface finish is achieved, reaching a
roughness of 0.8μm. Notably, this enhanced surface texture in turning is accomplished without
the necessity of adjusting machining speeds.
2. What are your tolerances for machined parts?
Our machined parts adhere to precision standards, featuring +.005”/- .005” local tolerances across
most metal geometries and +/- 0.010" for plastics. It's worth noting that tolerances may vary for
larger parts, especially with considerations for flatness post heat treatment.
An "As Milled" finish for CNC parts requires a minimum surface finish of 125. Fabricated parts
maintain a 0.010” dimensional tolerance and a 1° angular tolerance. Tapped holes not explicitly
labeled as features in the CAD model may be machined based on the specified diameters.
Crucially, surface treatments such as anodizing, bead blasting, iriditing, powder coating, etc.,
will only be applied upon explicit payment and acknowledgment.
3. Why choose CNC machining?
The decision to leverage CNC machining is driven by its attributes of speed, accuracy, and
versatility. This manufacturing solution excels in delivering end-use parts across different
volumes with notable efficiency, eliminating the need for substantial investments in hard
tooling or intricate set-ups.
4. How much import duty will I need to pay for my goods?
The amount of import duty for your goods is not standardized and varies based on several factors.
In Australia, the introduction of new CHAFTA regulations allows for a progressive implementation
of duty-free imports.
Import duties differ widely and are determined by the type of goods being imported.
Globally, most countries adhere to international Harmonized System (HS) codes, which categorize
nearly all commercial trade goods.
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