Technology

One partner, from powder to part

Ruiyi controls both the raw magnetic material and the component made from it. That removes an interface from your supply chain and keeps the specification consistent through compounding, molding and magnetization.

STEP 01

Magnetic Powder

Sr / Ba ferrite · NdFeB · SmFeN

STEP 02

Compound

PA6 / PA12 / PPS granulation

STEP 03

Component

Injection · pressing · magnetization

STEP 04

End Application

Motors · sensors · assemblies

Powder preparation

Sr/Ba ferrite, NdFeB and SmFeN powders are prepared and classified for dry pressing, wet pressing, bonding or compounding.

Compounding & granulation

Magnetic filler is dispersed in PA6, PA12 or PPS with controlled loading, then pelletised into ready-to-mold granules.

Forming & orientation

Injection molding, pressing, calendering or extrusion — with magnetic orientation applied in-field for anisotropic grades.

Magnetization & inspection

Axial, radial or multipole magnetization, followed by dimensional and magnetic inspection against the agreed specification.

Compounding & customisation

Formulated around your process window

Binder, filler loading, orientation and granule flow can be tuned to the part geometry, tooling and magnetic target.

Binder systems

PA6, PA12 and PPS, selected for temperature, moisture and chemical resistance.

Magnetic orientation

Isotropic for free pole patterns; anisotropic for maximum energy product in a defined direction.

Hybrid fillers

NdFeB + SmFeN and SmFeN + ferrite composites balance performance and cost.

Processing limits: the nylon (PA) compound sheets specify a maximum barrel temperature of 280 °C; PPS sheets specify 330 °C. Ferrite compound sheets list higher injection ranges and must be confirmed with Ruiyi before production — the site shows the value from each source sheet rather than applying one blanket limit.

Grade naming guide

How to read a Ruiyi grade code

Binder suffix for ferrite compounds, system prefix for rare-earth compounds. This rule is inferred from the 2026 specification sheets and must be confirmed by Ruiyi before launch.

Code / prefix	Meaning (inferred)
RY-16-6	RY-16 performance series · PA6 binder
RY-16-12	RY-16 performance series · PA12 binder
RY-14-FS	RY-14 series · PPS binder (FS suffix)
NT / NTP	Isotropic NdFeB · PA12 / PPS
NY / NYP	Anisotropic NdFeB · PA12 / PPS
NSY / SY / SFY / ST	NdFeB+SmFeN / SmFeN / SmFeN+Ferrite / isotropic SmFeN

To be confirmed: the meaning of the numeric performance series, the FS suffix and every rare-earth prefix. Do not publish this table as an official rule until Ruiyi signs it off.

Data conventions

SI / CGS, and one source-sheet caveat

Dual-unit data

Every magnetic parameter is stored in both unit systems, taken directly from the specification sheets. Ferrite sheets use mT / Gs and kA/m / Oe; rare-earth sheets use mT / kGs and kA/m / kOe. The unit switch preserves the source convention instead of silently re-scaling it.

Open unit converter →

(BH)max unit to verify

The rare-earth sheet prints “kJ/cm³” next to values that are numerically kJ/m³ (for example 8.0–14.7 paired with 1.0–1.8 MGOe; 1 MGOe ≈ 7.96 kJ/m³). This site uses kJ/m³. The customer should confirm and correct the source sheet before launch.

Quality documentation: certification scope (ISO / IATF / RoHS / REACH), test equipment and inspection reports are still to be supplied by Ruiyi. No unverified claims are published here.

Talk to an engineer

Bring us a part drawing or a performance target.

We will recommend a material system, forming route and magnetization approach.

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