Anisotropic sintered ferrite via in-house magnetic press
Sintered ferrite magnets pressed in a magnetic field (the company's magnetic-press process) for directional performance, plus isotropic grades and in-house cut/grind/drill or magnet-ceramic co-press parts.
AI-assisted directory summary. Technical specifications, performance metrics, readiness and compliance labels are unverified unless individually supported and reviewed. Proposed partnership routes do not establish supplier consent, export eligibility, or willingness to sign an NDA. Confirm claims and test conditions with the linked sources and supplier before procurement or citation.
Problem solved
Applications that cannot take NdFeB (cost, corrosion, or rare-earth supply) still need a directional sintered ferrite with custom machining. This line is a Japan-made ferrite source that also finishes the part and can co-press ceramic, so the buyer is not limited to catalog blocks.
Application contexts
- Small motors and sensors using ferrite rather than NdFeB
- Speakers and industrial devices specified as ferrite
- Custom ferrite shapes that need in-house grind or ceramic co-press
Technical principle
Ferrite powder is pressed (in a magnetic field for the anisotropic grade) and sintered in continuous tunnel kilns. The site dates magnetic-press anisotropic production to 1966 and cites Japanese patents 308120 and 308121. Secondary operations (cut, grind, drill, barrel, ultrasonic clean) are in-house. A 2007 press is described as forming magnet and ceramic in one shot. Magnetic properties are not published on the page.
Typical use cases
- Anisotropic ferrite motor segment where NdFeB is not required
- Custom-machined ferrite for a sensor or speaker
- Magnet-ceramic co-pressed part that would otherwise be assembled
Partnership route
How global engineering teams typically engage this asset.
Helpful to include: isotropic vs anisotropic · shape (arc / ring / block / drawing) · required Br / HcJ · secondary machining · annual volume
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Source & provenance
Translation review status: unreviewed. Publication does not establish technical verification or supplier endorsement.
Original language: JA.
Record updated: .
- 京浜化学工業株式会社 | フェライト磁石メーカー
https://keihinkagaku.co.jp/
Primary-source candidate; evidence review: pending.
Source accessed / recorded (collector timestamp): .
Source publication date: Not recorded.
Collector timestamps record when a source was stored, not an independent verification date. Source links provide context; they do not validate every specification, readiness label, certification, or proposed partnership route.