When you need high-quality, smooth-finished metal components with exact specifications, metal spinning delivers. But not all spun parts are created equal—especially when you're working with silver-copper alloys and need a consistent Ra 3.2 surface finish.
What is Metal Spinning?
Metal spinning is a cold-forming process where a flat metal disc (blank) is rotated at high speed and pressed against a form (mandrel) to create symmetrical, hollow shapes. It’s ideal for:
✔ Rapid prototyping (No expensive molds needed)
✔ Low to medium production runs (1 to 10,000+ parts)
✔ Complex curves & seamless designs (No welds or joints)
Why Choose Silver-Copper Alloys?
- Superior Conductivity – Perfect for electrical and thermal applications
- Anti-Corrosion – Resists tarnishing better than pure copper
- Aesthetic Appeal – Polished finish for decorative pieces
- Strength & Formability – Easier to spin than stainless steel
Achieving Ra 3.2 Surface Roughness: Why It Matters
Ra 3.2 (≈125 µin) is a semi-smooth finish—not mirror-polished, but free of visible tool marks. It’s the sweet spot for:
- Functional Parts – Reduces friction in moving components
- Electrical Contacts – Ensures better conductivity
- Decorative Items – Looks refined without costly polishing
How Do We Achieve It?
- Precision Tooling – Sharp, well-maintained spinning rollers
- Controlled Speed & Pressure – Prevents surface scratches
- Post-Spinning Finishing – Light abrasive treatment if needed
Industries That Benefit from Silver-Copper Spun Parts
| Industry | Applications |
| Electronics | RF shields, conductive housings |
| HVAC | Heat exchanger components |
| Lighting | Reflectors, lamp housings |
| Jewelry & Decor | High-end bowls, vases, art pieces |
| Aerospace | Lightweight sensor housings |
Final Thoughts
Whether you need 50 or 50,000 silver-copper parts, metal spinning offers flexibility, speed, and precision that other methods can’t match. With Ra 3.2 smoothness as standard, your components will perform—and look—flawless.
| | CNC Turning, CNC Milling, Laser Cutting, Bending, Spining, Wire Cutting, Stamping, Electric Discharge Machining (EDM), Injection Molding,3D Printing,Rapid Prototype,Moulds etc. |
| | Aluminum: 2000 series, 6000 series, 7075, 5052, etc. |
| Stainlesss steel: SUS303, SUS304, SS316, SS316L, 17-4PH, etc. |
| Steel: 1214L/1215/1045/4140/SCM440/40CrMo, etc. |
| Brass: 260, C360, H59, H60, H62, H63, H65, H68, H70, Bronze, Copper |
| Titanium: Grade F1-F5 |
| Plastic: Acetal/POM/PA/Nylon/PC/PMMA/PVC/PU/Acrylic/ABS/PTFE/PEEK etc. |
| | Anodized, Bead Blasted, Silk Screen, PVD Plating, Zinc/Nickl/Chrome/Titanium Plating, Brushing, Painting, Powder Coated, Passivation, Electrophoresis, Electro Polishing, Knurl, Laser/Etch/Engrave etc. |
| | ±0.002 ~ ±0.005mm |
| | Min Ra 0.1~3.2 |
| CERTIFICATE | ISO9001:2015,AS9100D,ISO13485:2016,ISO45001:2018,IATF16949:2016,ISO14001:2015,ROSH,CE etc. |
FAQ
1. Are you a manufacturer or a trading company?
We are a factory located in Shenzhen, China, with 20 years of rich experience,
covering 6000 square meters. Complete facilities, including 3D quality inspection equipment, ERP system and 40 machines. If necessary, we can provide you with material certificates, sample quality inspection and other reports.
2. How to get a quote?
Detailed drawings (PDF/STEP/IGS/DWG...), including quality, delivery date, materials, quality, quantity, surface treatment and other information.
3. Can I get a quotation without drawings?
Can your engineering team draw for my creativity? Of course, we are also glad to receive your samples, pictures or detailed size drafts for accurate quotation.
4. Can you provide samples before mass production?
Of course, the sample fee is necessary. If possible, it will be returned during mass production.
5. What is the delivery date?
Generally, the sample lasts for 1-2 weeks and the batch production lasts for 3-4 weeks.
6. How do you control quality?
(1) Material Inspection - Check material surfaces and approximate dimensions.
(2) First inspection of production - ensure
critical dimensions in mass production.
(3) Sampling inspection - check the quality before delivery to the warehouse.
(4) Preshipment inspection - 100% inspection by QC assistant before shipment.
7. After sales service team
If you have any problems after receiving the product, you can provide feedback through voice call, video conference, email, etc. within one month. Our team will provide you with solutions within a week.
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Customizable Silver Copper Metal Spinning Parts With Ra3.2 Roughness Images
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