Kuhmichel Abrasiv GmbH
Kuhmichel Abrasiv GmbH of Ratingen, Germany, offers one of the broadest ranges of blasting and grinding media anywhere – 32 products, from iron-free white fused alumina to ground corn cob. We are an authorised Kuhmichel dealer; around 340 items from the blasting media range are listed with us, in bags and on pallets.
Fused alumina – from industrial standard to specialty grade
The workhorse of industrial blasting is brown fused alumina FeSi: 9 mohs hardness, angular grain and, at around 5.5 g/cm³, a specific gravity well above that of the pure alumina grades. Hardness plus mass make it exceptionally powerful – a handful of grain sizes cover the bulk of applications, from descaling and derusting to wear protection. Where the work gets finer, or where bonded abrasives and refractory products are involved, the almost 40 items of brown fused alumina take over. White fused alumina, by contrast, is the specialty grade for the smaller share of cases: iron-free aluminium oxide of high purity and whiteness, melting around 2,050 °C, with grain sizes down to the 3 µm range – called for in medical technology, aerospace and the optical industry, wherever foreign rust on the part must be ruled out.
Silicon carbide – the hardest in the range
After diamond and boron carbide, silicon carbide is the third-hardest mineral there is: roughly 9 to 10 mohs, angular and splintery in shape, melting at around 2,300 °C and so chemically stable that it withstands the strongest acids and alkalis. More than 35 items of silicon carbide are available – as blasting media, as loose abrasive and as an additive for anti-slip, wear-resistant floor coatings.
Garnet sand and glass beads
Garnet sand is mineral, iron-free and, at 7.5 to 8 mohs, universally usable; its main application is high-pressure water jet cutting, followed by sweeping galvanised parts and façade cleaning. Fourteen grain sizes from 0.01 mm up to mesh 12/20 are listed. The ten items of glass beads cover main grain ranges from 40–70 µm to 600–800 µm, run in pressure and injector blasting systems and produce the characteristic matt satin, compacted surface without removing material.
Soft and metallic media
Eleven items of nutshell granules made from crushed, cleaned and screened walnut shells are the counterpart to alumina: an extremely soft, organic reusable medium for surfaces that must be treated without losing substance – paint stripping, deburring, cleaning. At the other end are nine metallic media in cast steel, chilled iron, stainless steel shot and cut wire, for wheel blast machines with a closed media circuit.
Grain size, packaging and selection
The choice of medium decides the result: hardness and grain shape govern removal rate and roughness, specific gravity the impact energy, service life the cost per square metre. On stainless steel and in medical technology, freedom from iron matters too, so that no foreign rust forms. We supply in 25 kg bags, on pallets and in big bags; Kuhmichel runs its own recycling plant for spent blasting and grinding media. Tell us the base material, the machine type and the surface you need, and we will narrow down medium and grain size with you.
Your advantage when buying from us
- Authorised Kuhmichel dealer – advice and procurement agreed directly with the manufacturer
- We ship worldwide
- Fast delivery with UPS (parcel) or DSV (pallets) – express shipping also available
- We are happy to advise on medium type, grain size, packaging and service life
- Dealer? Send your dealer enquiry straight to us – discounts depending on volume
- Large company or public authority? Order on account – simply ask
