RFQ Preparation Checklist
- Define acceptable burr limits
- Specify passivation standard
- Detail inspection methods
← Back to Capabilities
Electropolishing & Passivation
Controlled edge smoothing and corrosion-resistance finishing for medical tube components.
Best Fit For:Quality and manufacturing engineers defining surface-finish acceptance criteria.
Capability Highlights
- Burr removal
- Surface smoothing
- ASTM A967 Passivation
Typical Engagement Scope
- Implantable-component manufacturing programs
- Catheter shafts
- Surgical instruments
Execution Focus
- Material removal rate
- Edge rounding
- Corrosion resistance
Program Evaluation Matrix
| Program Metric | Typical Range | Procurement Value |
|---|---|---|
| Surface Roughness (Ra) | < 0.2 um | Supports lower friction and surface-condition targets when validated for the application. |
| Process standards | ASTM A967 passivation planning | Gives quality teams a concrete standard to place on drawings. |
| Inspection targets | Burr limit, edge rounding, material removal window | Prevents over-polishing while reducing recast and micro burrs. |
Capability Selection Logic
| Decision Factor | Confirm Before Quote | Buyer Impact |
|---|---|---|
| Finish objective | Burr removal, Ra reduction, passivation, corrosion resistance, or assembly friction target. | Prevents using electropolishing as a vague finishing term without acceptance criteria. |
| Dimensional sensitivity | Allowable material removal, wall thickness, slot bridge, ID/OD tolerance, and edge radius. | Avoids over-polishing parts that already sit near tight dimensional limits. |
| Inspection method | Visual magnification, roughness check, passivation standard, corrosion test, and report needs. | Connects the finish to measurable release evidence. |
Risk and Mitigation
- Over-polishing: Strict time/current density control and dimensional checks.
- Unverified burr removal: Set visual magnification, burr limit, edge radius, and dimensional checks before finishing starts.
Process and Quality Flow
- Pre-finish inspection: Review cut edge, burr, recast, wall thickness, and dimensional margin before processing.
- Controlled finishing: Apply electropolishing and/or passivation with project-specific time, chemistry, and current controls.
- Cleaning and neutralization: Use rinse, ultrasonic cleaning, drying, and handling controls appropriate to the component scope.
- Final release: Inspect dimensions, edge condition, surface notes, and passivation or finish records before shipment.
Quality Evidence Buyers Can Request
- Before/after edge or surface inspection notes when requested
- Dimensional check for features sensitive to material removal
- Passivation standard or finish route confirmation
- Microscopic review for remaining burr, slag, or rough edges
Related Products
Buyer FAQ
Is electropolishing necessary?
Highly recommended for laser-cut parts to remove slag and burrs.
Can electropolishing change dimensions?
Yes. It removes material from exposed surfaces, so allowable material removal and CTQ dimensions should be confirmed before processing.
Related Buyer Paths
Resources & Capabilities
Product Paths
Inquiry Email
Best for drawings, tolerance tables, inspection needs, and quote history.
Instant Chat
WhatsApp Engineering Support
Fast path for OD/ID, material, sample quantity, and lead-time questions.