Magnetic and molding DFM review for custom bonded magnet programs, connecting field simulation, demagnetization risk, and manufacturable geometry.
Magnet FEA Simulation and DFM is most relevant when best for teams that need to derisk a custom magnet design before paying for tooling or validation samples. Typical oem capability programs include BLDC motor rotors, Automotive angle sensors, and Resolver and encoder targets, so the early review should confirm review ANSYS Maxwell, JMAG, COMSOL, FEMM, or buyer simulation outputs when available.
Before sample tooling, align on 2D/3D drawing, material target, magnetic pattern, and sensing datum and operating temperature, vibration, media exposure, and lifetime requirement. The first acceptance check is simulation-to-sample alignment (Air gap, pole geometry, material curve, temperature, and sensor position), because a useful simulation must match the molded part, magnetization fixture, and real sensing or motor assembly.
The main risk is brittle sintered magnet carried into a vibration-critical assembly; control it by review bonded magnet material and molded geometry when chipping, cracking, or adhesive failure can affect functional safety. Also review demagnetization risk and magnetic pattern accepted without measurable criteria before moving from prototypes to repeat production.
| Program Metric | Typical Range | Procurement Value |
|---|---|---|
| Simulation-to-sample alignment | Air gap, pole geometry, material curve, temperature, and sensor position | A useful simulation must match the molded part, magnetization fixture, and real sensing or motor assembly. |
| Demagnetization risk | Reverse field, high-temperature exposure, and irreversible flux loss by project | Bonded NdFeB, SmFeN, ferrite, and hybrid materials behave differently under heat and opposing fields. |
Yes. Share the model assumptions or key outputs so material, magnetization, molded tolerances, and inspection criteria can be reviewed against the simulated target.
Include 2D/3D drawing, material target, magnetic pattern, and sensing datum, operating temperature, vibration, media exposure, and lifetime requirement, and sample quantity, tooling target, annual forecast, destination, and PPAP needs. If the part is tied to automotive or safety-critical sensing, also include PPAP, traceability, and magnetic test expectations.
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Include drawing, material, pole pattern, temperature, compliance, and PPAP needs.
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Fast DFM triage for magnetic material, tooling, and validation questions.
