3D isotropic SMC flux cores and concentrators for axial machines with Somaloy route review, near-net-shape DFM, density, loss, coating, and test scope.
3D isotropic flux cores should be quoted as a magnetic-path and manufacturability package. The buyer should send CAD, flux intent, operating point, material route, test condition, and evidence expectations before comparing SMC with laminations.
| Parameter | RFQ Planning Range | Engineering Note |
|---|---|---|
| Flux-path orientation | Radial + axial + circumferential mixed flux, isotropic SMC route | Use SMC when the magnetic path cannot be represented cleanly by stacked 2D laminations. |
| Part envelope | OD 30-800 mm; ID 25 mm min.; axial height 5-110 mm | Rotational rings, flux concentrators, poles, bridges, and non-rotational parts are reviewed by comparable CTQ dimensions. |
| Feature family | Tooth, pole, yoke, bridge, flux concentrator, slot, pocket, rib, and carrier interface | Feature selection should connect magnetic benefit to compaction and ejection feasibility before tooling release. |
| Material route | Somaloy 1P / 3P / 5P family or equivalent insulated iron powder review | 1P / 3P / 5P naming is used as RFQ routing language; final grade availability and process route must be confirmed per project. |
| Density and mechanical target | 7.4-7.6 g/cm3 planning target where geometry and SMC route allow | Density should be tied to sample geometry, compaction route, local feature risk, and a documented measurement method. |
| Frequency and loss review | 50 / 400 / 1000 Hz planning points; B, temperature, waveform, and sample geometry by buyer program | Core-loss numbers are not comparable unless flux density, frequency, temperature, waveform, and sample basis are stated. |
| Feature complexity | Custom tooth, pole, yoke, bridge, slot, window, rib, and near-net-shape 3D features | Sharp transitions, tall walls, thin bridges, deep windows, and hidden pockets need radius, draft, density, and ejection review. |
| Magnetic evidence package | B-H, permeability, resistivity, core loss, density, sample ID, and test-condition record | Public planning values should be converted into sample-specific records before pilot approval. |
| Post-process scope | Machining, deburring, resin coating, impregnation, corrosion protection, Hi-pot, masking, cleaning, and packaging | Post-processing should be scoped separately from the pressed magnetic body so quote comparisons are not misleading. |
| Release evidence | FAI, CMM/3D scan, density record, magnetic test scope, coating/visual note, traceability, and packing record | Prototype and pilot approval should be based on a release package, not only a visual sample. |
Evidence Pack
For custom product RFQs, the useful proof is a controlled evidence package: drawings, material route, inspection records, validation scope, and sample acceptance notes.
Evidence to Prepare
Simulation view, flux-path notes, operating frequency, target B field, saturation concern, and lamination comparison if available.
Acceptance Focus
Prevents choosing SMC only because it sounds advanced when the motor could be simpler, cheaper, or lower-risk with laminations.
Evidence to Prepare
Somaloy-family or equivalent material route, sample geometry, density target, heat-treatment route, B-H/core-loss conditions, and acceptance note.
Acceptance Focus
Lets engineering teams compare permeability, resistivity, and loss with the same test basis rather than mismatched brochure values.
Evidence to Prepare
DFM notes for bridge thickness, root radius, draft, wall thickness, fill direction, ejection face, green-part handling, and visual criteria.
Acceptance Focus
Protects the project from a visually attractive 3D core that fails because of local density gradients or fragile bridges.
Evidence to Prepare
CMM/3D scan, CTQ table, density check, B-H or core-loss scope, coating map, Hi-pot requirement if applicable, and sample IDs.
Acceptance Focus
Helps sourcing, design, and quality teams approve the same sample package without confusing magnetic test results with part-release evidence.
Evidence to Prepare
Surface treatment, masking, resin coating or impregnation scope, rust-prevention method, part separation, cushioning, label, and export crate notes.
Acceptance Focus
Avoids fragile or corrosion-sensitive SMC samples arriving damaged after international shipment.
| Buyer Checkpoint | Evidence to Prepare | Acceptance Focus |
|---|---|---|
| Can the buyer show why the magnetic path needs isotropic 3D SMC instead of a lamination stack? | Simulation view, flux-path notes, operating frequency, target B field, saturation concern, and lamination comparison if available. | Prevents choosing SMC only because it sounds advanced when the motor could be simpler, cheaper, or lower-risk with laminations. |
| Can material grade claims be tied to test conditions instead of catalog shorthand? | Somaloy-family or equivalent material route, sample geometry, density target, heat-treatment route, B-H/core-loss conditions, and acceptance note. | Lets engineering teams compare permeability, resistivity, and loss with the same test basis rather than mismatched brochure values. |
| Can near-net-shape features be compacted and ejected without hidden density or crack risk? | DFM notes for bridge thickness, root radius, draft, wall thickness, fill direction, ejection face, green-part handling, and visual criteria. | Protects the project from a visually attractive 3D core that fails because of local density gradients or fragile bridges. |
| Can the prototype report separate magnetic performance from dimensional and coating acceptance? | CMM/3D scan, CTQ table, density check, B-H or core-loss scope, coating map, Hi-pot requirement if applicable, and sample IDs. | Helps sourcing, design, and quality teams approve the same sample package without confusing magnetic test results with part-release evidence. |
| Can corrosion, insulation, handling, and export packaging be scoped before pilot samples ship? | Surface treatment, masking, resin coating or impregnation scope, rust-prevention method, part separation, cushioning, label, and export crate notes. | Avoids fragile or corrosion-sensitive SMC samples arriving damaged after international shipment. |
Any released claim should be tied to the buyer drawing, sample ID, material batch, inspection method, and agreed test condition instead of a generic marketing statement.
| Metric | Typical Range | Why It Matters |
|---|---|---|
| Magnetic isotropy | Radial, axial, and circumferential flux support by SMC material route and geometry | Isotropic behavior is the main reason to consider SMC for complex 3D magnetic paths instead of stacked silicon steel. |
| Electrical resistivity | Material, insulation, density, and thermal route dependent | Higher resistivity helps control eddy-current loss in compact high-frequency designs. |
| Density target | 7.4-7.6 g/cm3 planning target where geometry and SMC route allow | Density links magnetic performance, mechanical strength, local saturation, and crack risk in compact 3D features. |
| Core-loss evidence | 50 / 400 / 1000 Hz planning points, with B, waveform, temperature, and sample geometry stated | A loss claim without test conditions cannot guide an axial machine or actuator design decision. |
| Near-net-shape complexity | Feature depth, bridge thickness, wall height, root radius, draft, ejection, and machining allowance by CAD | Complex 3D magnetic value is only useful if the part can be pressed, handled, coated, inspected, and assembled. |
| Release evidence | FAI, CMM/3D scan, density or weight check, magnetic test scope, coating note, traceability, and packing record | Advanced R&D teams need an auditable sample package before approving pilot tooling or design changes. |
No. SMC is strongest when 3D flux, compact geometry, segmented manufacturing, or high-frequency loss control justifies the material route.
It means the design expects meaningful magnetic flux in more than one direction, such as radial, axial, and circumferential components. The RFQ should include CAD, simulation context, target B field, frequency spectrum, and acceptance tests so manufacturability and magnetic evidence can be reviewed together.
We can review Somaloy-family or equivalent insulated iron-powder requirements as RFQ routing input. Final material feasibility, availability, density, heat treatment, and magnetic evidence must be confirmed against the buyer operating point and sample test conditions.
A 7.4-7.6 g/cm3 planning target can be discussed where geometry and SMC route allow, but it is not a universal guarantee. The density method, local geometry, compaction route, sample ID, and acceptance report should be defined before pilot approval.
The page supports defining a B-H or core-loss test scope. Useful reports should state flux density, frequency, waveform, temperature, sample geometry, density, heat-treatment route, and revision ID so the numbers can be compared responsibly.
SMC is usually stronger when the flux path bends through complex 3D geometry, the part needs near-net shaping, high-frequency eddy-current control matters, or assembly simplification is valuable. Laminations may still be better for low-frequency high-permeability designs with simple 2D flux paths.
A practical package can include FAI, CMM or 3D scan, CTQ table, density or weight baseline, B-H or core-loss test scope, coating or insulation note, corrosion and packing note, sample IDs, and material-route traceability.
Inquiry Email
Attach STEP/DXF/PDF plus frequency, flux density, sample quantity, annual forecast, and destination.
