OSENC produce su disegno magneti con rivestimento in zinco per progetti OEM e industriali, dalla campionatura con MOQ di 1 pezzo alla fornitura per la produzione. La finitura zincata viene controllata come parte integrante del componente magnetico finito, non come trattamento aggiunto in un secondo momento dopo la lavorazione meccanica.
Inviare le dimensioni dopo il rivestimento, la tolleranza, il grado NdFeB o le prestazioni richieste, la direzione di magnetizzazione, la finitura zincata, la temperatura di esercizio e l’ambiente di utilizzo. Prima della produzione fissiamo la specifica approvata.
OSENC specifica un rivestimento in zinco per componenti industriali generici e OEM che richiedono una finitura metallica sottile, dimensioni finali controllate e una protezione anticorrosione funzionale nell'ambiente di esercizio previsto.
Lo zinco standard presenta generalmente un aspetto da argentato ad argentato opaco. Zinco bianco, zinco nero, zinco colorato e cromatazione allo zinco sono gestiti come requisiti di finitura distinti. I progetti con passivazione sono specificati come NdFeB + Zn + Passivation.
| Specifica | Indicazioni per la fornitura OSENC | Dati per la richiesta di offerta |
|---|---|---|
| Struttura del rivestimento | NdFeB + Zn oppure NdFeB + Zn + Passivation | Exact finish/passivation callout |
| Forme | Disc, block, ring, cylinder, arc and drawing-based custom geometry | 2D/3D drawing, holes, slots, chamfers and edge details |
| Gradi | N35, N38, N42, N45, N48, N50, N52 plus H and SH; UH/EH for higher-temperature custom projects | Grade or target magnetic performance |
| Magnetizzazione | Axial, diametrical, through-thickness, length, width, radial or multipole where geometry supports it | Direction and pole pattern |
| Zinc finish | Standard Zinc, White Zinc, Black Zinc, Colored Zinc and Zinc Chromate are handled as distinct project finish callouts | Appearance, passivation and restricted-substance requirements |
| Tolleranza finale | ±0.10 mm standard RFQ reference / ±0.05 mm precision RFQ reference | Critical dimensions after plating |
| MOQ | 1 piece for custom sampling; small-batch validation and production supply supported | Sample and production quantity |
We inspect critical dimensions on the finished zinc-coated part, so coating build-up is included in assembly fit.
Start with one custom sample, lock the approved specification, then move into pilot and production quantities.
We review grade, geometry, magnetization, zinc finish, temperature and service environment as one component.
Dimensions, tolerances, magnetization, finish and inspection requirements are locked before production starts.
Assembly fit is determined by the finished part, so OSENC controls critical dimensions after zinc plating. This matters most on thin discs, small blocks, rings, holes and tight mating features where coating build-up can consume assembly clearance.
Uso ±0.10 mm as the standard RFQ tolerance reference and ±0.05 mm as the precision RFQ reference. We lock the final tolerance against geometry, coating system and inspection method before production.
| Forma | RFQ Size References | Specify With |
|---|---|---|
| Disco | D6×2, D8×2, D10×2, D10×3, D12×3, D15×3, D15×5, D20×3, D20×5, D25×5, D25×10, D30×5 mm | Diameter, thickness, grade, axial/diametrical magnetization and finished tolerance |
| Blocco | 10×5×2, 10×10×3, 15×10×3, 20×10×5, 20×20×5, 30×10×5 mm | L×W×T, magnetization axis, edge details and coated dimensions |
| Ring / Arc / Custom | Made to drawing | OD/ID/thickness or complete geometry, tolerances and magnetization |
These dimensions are practical RFQ starting points for custom production. OSENC manufactures to the approved drawing rather than presenting them as fixed stock specifications.
OSENC specifies zinc coated NdFeB for engineering components, electronics, furniture fittings, retail displays, packaging, fixtures, model assemblies and general manufacturing where thin metallic protection and dimensional control match the operating environment.
| Rivestimento | Why We Specify It | Main Engineering Check |
|---|---|---|
| Zinco | Thin metallic finish with lower coating build-up; standard RFQ reference 7–15 μm | General industrial environment, finish/passivation and assembly clearance |
| Ni-Cu-Ni | Common multilayer metallic protection with a thicker total stack than standard zinc | Corrosion requirement, surface contact and tight dimensional fits |
| Resina epossidica | Polymer barrier when moisture or corrosive-fluid protection is a stronger design priority | Scratching, edge damage, impact and finished dimensions |
| Zinc Chromate | Separate zinc-based surface system with a 15–30 μm RFQ thickness reference | Exact passivation callout and restricted-substance requirements |
OSENC guarantees corrosion-test performance only when the PO defines the test method, sample condition, duration and pass/fail criteria. We do not convert an industry benchmark into a batch guarantee.
For standard zinc-coated N42 projects, 80°C continuous is the design limit. Zinc plating does not raise the magnetic material's temperature capability. We select the correct temperature-grade NdFeB when the application runs hotter.
| Grade Family | Design Reference | OSENC Selection Direction |
|---|---|---|
| N | 80°C | Standard-temperature applications |
| M | 100 °C | Moderately elevated temperature |
| H | 120 °C | Higher-temperature design |
| SH | 150 °C | High-temperature custom project |
| UH | 180 °C | Special high-temperature project |
| EH | 200 °C | Special high-temperature project |
We confirm the final grade against magnet geometry, magnetic circuit and operating point. The coating never overrides the magnetic material limit.
We inspect visual integrity and coating condition against the approved finish. When thickness is controlled, XRF is the primary non-destructive production reference method.
We verify magnetization direction and pole orientation against the approved drawing or sample before packing.
OSENC provides available RoHS, REACH and SVHC documentation against the approved material and coating specification when required. Cr6+ status is confirmed separately against the selected passivation chemistry and supporting documentation.
For new custom parts, sampling locks dimensional fit, zinc appearance, magnetization and any corrosion or adhesion acceptance requirement before production. We do not turn an industry benchmark into a batch guarantee.
Start a Sample Order
OSENC quotes the finished magnetic component against the complete drawing and inspection requirement, not by magnet weight alone.
Dimensions, material volume, NdFeB grade, geometry and machining complexity set the base manufacturing cost.
Zinc finish, passivation, finished tolerance and tight assembly features determine coating and inspection complexity.
Magnetization pattern, compliance documents, test requirements, sample quantity and production volume complete the quotation.
Yes. We manufacture custom zinc coated NdFeB magnets from drawings or approved samples. We lock the finished dimensions, tolerance, grade, magnetization direction, zinc finish, operating temperature and inspection requirements before production.
The standard project structures are NdFeB + Zn and NdFeB + Zn + Passivation when a conversion or passivation finish is specified. The exact finish is written into the approved specification.
For RFQ engineering, standard zinc plating uses a 7–15 μm total-thickness reference and zinc-chromate systems use a 15–30 μm reference. The controlled production value is the thickness stated on the approved drawing and inspection plan.
For a standard zinc-coated N42 design, use 80°C as the continuous design limit. We move the magnetic material to M, H, SH, UH or EH grades when the operating temperature requires a higher limit.
No. We do not position standard zinc as a marine, permanent-immersion, strong-acid/alkali or high-abrasion coating. For severe wet, salt, chemical or wear exposure, we select a stronger protection system or encapsulation.
MOQ is 1 piece for custom sampling. We support single-piece samples, small-batch validation and production orders.
Send the drawing, finished dimensions and tolerances, magnet grade or target magnetic performance, magnetization direction, zinc finish or passivation callout, operating temperature, environmental exposure, compliance requirements, test requirements and quantity.
Send your drawing and application requirements. OSENC will lock the finished dimensions, grade, magnetization, zinc finish, temperature and inspection requirements, then quote the sample and production quantity against one controlled specification.
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