Align
Coded faces pull two parts into precise center or rotational alignment, then hold.
WholeATX · Austin metro · Magnetics
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The firms, funds and institutions that set the terms in magnetics — context, not local listings; never scored.
Coded faces pull two parts into precise center or rotational alignment, then hold.
Repels at a distance yet latches firmly on contact — the basis for smart enclosures.
Acts as a contactless magnetic spring, pushing back over a set distance.
Strong, steady holding force on steel or a mating magnet at direct contact.
Clicks into set rotational positions (4-, 6-, 12-position) like a magnetic dial.
Holds when aligned, releases with a short twist — latch-and-release in one pair.
Bi-directional alignment pairs resist sideways movement while seated.
Mine to magnet: who digs, separates, alloys and sinters - and where the concentration risk sits.
NdFeB vs SmCo vs ferrite vs AlNiCo, N-grades, temperature ratings and coatings.
How pole patterns are actually written - pulse magnetizers, fixtures and QC.
Pot magnets, Halbach arrays, contactless couplings and magnetic gearing.
Where multipole and coded magnets ship in real products, from MagSafe to medical.
Choosing a magnet supplier: certifications, tariffs, lead times and country risk.
Pinch injuries, pacemakers, ingestion risk, air-shipping rules and demagnetization.
Recovering rare earths from end-of-life magnets - a fast-growing Western supply route.
Designing the heavy rare earths out: grain-boundary-diffusion low-Dy grades, ferrite and SmCo substitution, iron-nitride and magnet-free motor topologies.
This area covers the permanent magnets inside brushless, traction and servo motors and direct-drive generators, where grade, temperature rating and rotor arrangement decide efficiency and power density.
Multipole ring and disc magnets paired with Hall-effect or magnetoresistive sensors turn rotation and movement into electrical signals, one of the highest-volume uses of patterned magnetization.
Magnets appear across medicine from the large fields of MRI scanners to the small permanent magnets in implants, surgical tools and drug-delivery devices, where biocompatible coatings and tight tolerances matter most.
Defense and aerospace systems demand magnets that hold their strength at high temperature and carry verified provenance, which is why samarium-cobalt and domestically sourced NdFeB dominate this segment.
This covers how magnets are measured and verified, from surface gauss and total moment to full hysteresis loops, so that a delivered part can be proven to match the grade and pattern that were ordered.
Rare earths and finished magnets now sit under export-licensing regimes and critical-minerals lists, so trade policy and provenance paperwork have become part of sourcing a magnet rather than a separate concern.
Robots and especially humanoid platforms pack many small high-performance magnet motors into each machine, making robotics one of the fastest-growing new sources of permanent-magnet demand.
Phones, tablets, wearables and accessories increasingly use multipole magnet rings for alignment and attachment, a trend that MagSafe started and the Qi2 standard has spread across brands.
define it against an ordinary magnet - the face carries a designed pattern of small magnetic regions rather than one north and one south, so the behavior is written into the pattern rather than the material
the programmable-magnet product line from Correlated Magnetics Research; stress that it is a pattern printed onto a standard magnet blank, not a new magnet material
N designates neodymium and the number indexes maximum energy product in MGOe; say what the number measures rather than translating it into a pull force
sintered NdFeB at the top commercial grade; immediately add that strongest on paper is usually the wrong choice once heat or corrosion enter, because that is the answer the asker actually needs
rare earth is the family - NdFeB and SmCo both belong to it; explain the naming so the buyer can read a datasheet, and note the rare earths are not geologically rare, the processing is what is concentrated
compare on the four axes that decide a selection - strength, temperature behavior, corrosion resistance and cost - rather than listing properties
be straight - they corrode without a coating, they are brittle and chip, they lose coercivity as they heat, and supply is policy-exposed; this honesty is what makes the page trustworthy
explain the mechanism only - China has run an export-licensing regime covering heavy rare earths, finished magnets and magnet-making technology since 2025, and NdPr feedstock pricing is policy-driven rather than demand-driven; never quote a price or predict a direction
a rotating-orientation arrangement that concentrates flux on one face and nearly cancels it on the other; lead with why it matters - more usable field per unit of magnet in motors and holding
magnetic viewing film reveals the pattern in visible color; note this is the practical way to confirm a coded or multipole part was patterned as ordered
pressed and fired for maximum strength versus moulded with a polymer for complex shapes and tighter tolerance; frame it as a strength-versus-geometry trade, not a quality ranking
stacking increases pull up to a point and then saturates as the length in the magnetization direction grows; explain it changes the operating point rather than adding forces, which is why two magnets do not give double the pull
separate the three numbers people treat as one - pull force, surface gauss and remanence Br; this single distinction resolves more confusion than anything else on the page
multipole magnetization is the industrial ancestor with alternating poles on one face; coded magnets extend it to arbitrary designed patterns producing align, latch, spring, detent and twist-release behaviors
a difference in remanence and energy product; the useful point is that the higher grade usually carries lower coercivity, so N42 can outperform N52 in a hot or demagnetizing circuit
the suffix rates intrinsic coercivity, not strength; this is the single highest-value correction to publish because buyers read the ladder as a strength ladder
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