Cnc Machining is a subtractive manufacturing process that uses rotating computer-controlled cutting tools like drills, end mills, and turning tools to remove material from a solid block of material, thereby shaping the part.
Digital design files direct the CNC machines how to cut the block (also known as the “workpiece”) and multiple machines can use the same design file at the same time, which greatly increases the speed of the production process.
CNC Machining is a viable option for manufacturing parts with a range of materials, from plastic and metal to wood, fiberglass, and more.
Surface finishes for CNC machined parts
CNC machining can produce parts with tight tolerances and fine detail from a variety of metal or plastic materials.
As Machined
The finish option with the quickest turnaround. parts have minor visible tool marks and potentially sharp edges and burrs, which can be removed upon request. The standard as -machined surface roughness (Ra) is 3.2 μm. Surface finish requirements can be increased to 1.6, 0.8 and 0.4 μm.
Bead Blasting
Bead blasting adds a uniform matte or satin surface finish on a machined part, removing the tool marks. Mainly for visual purposes.
Anodized (Type II Or Type III)
Type II adds a corrosion resistant, ceramic layer to the surface of the machined part. Can be dyed to different colors – clear, black, red, and gold are the most common. It is usually associated with aluminum and Titanium.
Type III adds a wear and corrosion resistant ceramic layer to the surface of the part. It is thicker and Offers greater protection than Type II. Available only for Aluminum and Titanium.
Powder Coating
This is a process where powdered paint is sprayed onto a part which is then baked in an oven. This creates a strong, wear- and corrosion-resistant layer that is more durable than standard painting methods. Has a higher impact resistance compared to anodizing. Large range of colors available. Can be applied to any metal.
Electroplating
It is a process that uses an electric current to reduce dissolved metal cations so that they form a thin coherent metal coating on an electrode. The coating film will help to prevent corrosion and improve wear resistance, conductivity, reflection, and cosmetic appearance.
Material Available |
Aluminum | Stainless Steel | Brass | Copper | Plastic | Iron |
AL6061 | SS201 | C35600 | C11000 | POM | 20# |
AL6063 | SS301 | C36000 | C12000 | Peek | 45# |
AL6082 | SS303 | C37700 | C12200 | PMMA | Q235 |
AL7075 | SS304 | C37000 | C10100 | ABS | Q345B |
AL2024 | SS316 | C37100 | … | Delrin | Q345B |
AL5052 | SS416 | C28000 | | Nylon | 1214/1215 |
etc | etc | C26000 | | PVC | 12L14 |
… | … | C24000 | | PP | Carbon steel |
| | ... | | ... | |
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As machined | All metals |
Polished | All metals+Plastic (e.g aluminum, steel,nylon, ABS) |
Powder Coated | All metals ( e.g aluminum, steel) |
Brushing | All metals (e.g aluminum, steel) |
Anodized | Aluminum and Titanium alloys |
Electroplated | All Metals + plastic (ABS, PC/ABS) |
Bead Blasted | Steel and Aluminum and Titanium alloys |
Anodized Clear or Color | Aluminum and Titanium alloys |
Suzhou FCE Precision has been specialized in designing and manufacturing metal machining parts for over 15 years. Own a strong engineering team with rich experiences and equipped with many precision manufacturing machines.
Professional to make all kinds of metal parts, like CNC cutting& milling parts, stamping parts, metal sheet parts, assembly unit etc. Our Products cover automotive, Electronic, medical, air, home & office appliance industry.
We are certificated by ISO 9001 and IATF 16949.