Ferrite is a strange material to machine. It’s technically a ceramic — hard, brittle, electrically non-conductive — but it’s also the world’s most mass-produced permanent magnet material. Billions of ferrite magnet segments go into automotive sensors, micro-motors, loudspeakers, and household appliances every year. And every one of them needs to be cut from a sintered […]
Ferrite Magnet Machining and Surface Quality Control Read More »
A diamond wire saw can produce NdFeB surfaces with Ra 0.3–0.5 μm straight off the cut. That sounds good on paper — and it often is good enough for magnets that go directly into bonded assemblies. But for magnets heading into electroplating or precision motor applications, “good enough off the saw” and “ready for coating”
Magnet Surface Finishing — Chamfering, Grinding & Coating Prep for NdFeB Read More »
Sintered NdFeB is one of the hardest permanent magnet materials to cut cleanly. The grain boundaries are brittle, the Nd-rich phase oxidizes fast when exposed to moisture, and any thermal input during cutting can permanently damage the microstructure — reducing the magnet’s achievable performance when it’s finally magnetized downstream. We’ve processed hundreds of NdFeB blocks
NdFeB Magnet Cutting Process Using Endless Diamond Wire Read More »
A clean cut through optical glass looks almost polished — no visible marks, no micro-cracks, no chipping at the edges. A bad cut through the same glass looks frosted, has irregular edge damage, and may contain subsurface cracks that won’t show up until the part fails during downstream processing. The material is the same. The
Cutting Diamond Wire Quality — Diagnosis & Fixes Read More »
Every cutting diamond wire application comes down to four numbers: wire speed, wire tension, feed rate, and wire diameter. Get these right and the process runs itself — clean cuts, consistent accuracy, predictable wire life. Get them wrong and you’ll burn through wire, crack workpieces, or spend hours chasing surface quality problems that could have
A cutting diamond wire loop doesn’t fail all at once. It degrades gradually — grain by grain, pass by pass — until the cutting performance drops below what the job requires. The challenge isn’t predicting exactly when the wire will break (though that matters too). The real challenge is knowing when to replace it before
Cutting Diamond Wire Lifespan — What Wears Out the Wire and How to Make It Last Read More »
In a traditional wire saw, the wire runs from one spool to another and back — hundreds of meters of wire, reciprocating through the cut zone. In an endless wire saw, the wire is a closed loop. No spools. No reversal. The wire circulates in one direction, continuously, like a belt. That loop — the
Cutting Diamond Wire Loop — Types, Selection & Maintenance Guide Read More »
±0.03 mm. That’s the cutting precision tolerance on Vimfun endless wire saws — and it’s a number we stand behind across glass, ceramics, quartz, and sapphire applications. But tolerance on a spec sheet and accuracy on a finished part aren’t the same thing. One is what the machine can do under ideal conditions. The other
Most engineers setting up their first diamond wire cut ask the same question: how fast should the wire run? The short answer — for most hard and brittle materials, somewhere between 30 and 60 m/s. But the real answer depends on what you’re cutting, what surface finish you need, and how long you want the
A 0.5 mm diamond wire running at 60 m/s removes material from a sapphire boule without generating measurable heat at the cut zone. No blade vibration. No thermal stress cracks. Just a clean kerf less than 0.6 mm wide. That’s the core promise of cutting diamond wire — and understanding how it actually works is
Don’t worry! We know that obtaining cutting machines that meet your needs can be very challenging. Our professional cutting experts are always available to support you: