PIEDRAS DE AFILAR CBN METAL BOND, 150x25, 150x50

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Cant.:
 NITRURO DE BORO CÚBICO, CBN, BORAZÓN
PIEDRAS PARA AFILAR, AFILAR

CBN (nitruro de boro cúbico) es un nombre genérico, también existen otros nombres para este material, según el fabricante: borazon, elbor, cubonita, etc.
El CBN (nitruro de boro cúbico) es el segundo material más duro después del diamante y tiene la mejor relación calidad-precio para procesar aceros, en comparación con otros materiales, como el diamante, el carburo de silicio o el óxido de aluminio.
Debido a sus especificaciones de alta resistencia, el CBN se puede utilizar en seco sin lubricante. Esto convierte al CBN en la piedra de afilar más limpia disponible.

Longitud:  150  mm
Ancho:  25, 50  mm
Altura: 3 mm

Recommendations o,  5 n selection of sharpening stones.
How to maintain sharpening stones 

 
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Metal bond, may require lubricant.   
Bloque macizo plano sobre pieza de aluminio, los granos abrasivos se distribuyen uniformemente sobre la piedra.

Grain size: Please select from the list, or read Technical information.  
The finest grain size is 0.5/0 micron (fine polishing) , the coarsest - 200/160 micron (rough grinding). 
In grain selection window you see grain sizes according to standards:
MICRON=MESH(GRIT)=FEPA

CBN concentration: 100%
Do not waste your money on cheaper stones with lower/unknown concentration.
  
Available on stock 

Preparation of sharpening stones
Stones with grits finer 3 microns either require preparation (dressing), or they will be self-polished after sharpening of 30-50 knives. Then they will be of gold color and work well.
This is common issue for all manufacturers: abrasive grains are covered with bond, so you need to "release" them. 
"Stone preparation" is not available because of war.  


Selection of SiC powders for  dressing  of sharpening stones

StoneStarting gritFinishing grit
500/400 μ = 35/40= D501 F16 (1230 μ)F24 (745 μ)
400/315 μ = 40/45= D426F16 (1230 μ)F46 (370 μ)
315/250 μ = 50/60= D301 F24 (745 μ)F46 (370 μ)
250/200 μ = 60/70= D251F24 (745 μ)F60 (260 μ)
200/160 μ = 70/80= D213F36 (525 μ)F60 (260 μ)
160/125 μ = 100/120= D151 F46 (370 μ)F80 (180 μ)
125/100 μ = 120/140= D126  F60 (260 μ)F100 (129 μ)
100/80 μ = 140/170= D107F60 (260 μ)F120 (109 μ)
 80/63 μ = 170/200= D91  F80 (180 μ)F150 (82 μ)
63/50 μ = 230/270= D64 F100 (129 μ)F180 (69 μ)
50/40 μ = 270/325= D54  F120 (109 μ)F220 (58 μ)
40/28 μ = 550= M40F150 (82 μ)F240 (46 μ)
28/20 μ = 650= M25  F180 (69 μ)F320 (30 μ)
20/14 μ = 1100= M20F240 (46 μ)F400 (18 μ)
14/10 μ = 1500= M16  F320 (30 μ)F400 (18 μ)
10/7 μ = 1700= M10F400 (18 μ)F600 (10 μ)
7/5 μ = 3000= M6.3  F600 (10 μ)F800 (6,7 μ)
5/3 μ = 4000= M4F600 (10 μ)F800 (6,7 μ)
3/2 μ = 6000= M1.5 F800 (6,7 μ)F1200 (3 μ)
2/1 μ = 10000F800 (6,7 μ)F1200 (3 μ)
1/0 μ   F800 (6,7 μ)F1200 (3 μ)
0.5/0 μ   F800 (6,7 μ)F1200 (3 μ)

Use and cleaning of CBN sharpening stones
Use any comfortable oil (baby, olive..) to prevent glazing. If glazed - clean with alcohol and toothbrush.

Maintenance is only needed every year or two.
In 1-2 years you may need to flatten stone, 20 mins with Ferric chloride (FeCl):
- 10 mins setting in 25% mixture (25 gr FeCl per 75 gr of water),
- 10 mins polish movements (carefully draw "8") on glass plate.
There are other methods (with SiC powders..), but method with FeCl, on glass plate is the cheapest and simplest.

You may buy 100 gr. of FeCl in dimensions selection window (click also any grain size to select it). I sell it if you buy a stone.

Grain size/operation reference chart
30000 grit = 0.5/0 μ - fine polishing
15000 grit = 1/0 μ - fine polishing
10000 grit = 2/1 μ - fine polishing
5000 grit = 3/2 μ - fine polishing
4000 grit = 5/3 μ - polishing
3000 grit = 7/5 μ - polishing
1700 grit = 10/7 μ - polishing
1500 grit = 14/10 μ - polishing
1100 grit = 20/14 μ - polishing
650 grit = 28/20 μ - polishing
550 grit = 40/28 μ - fine grinding
325 grit = 50/40 μ - fine grinding
285 grit = 63/50 μ - fine grinding
240 grit = 80/63 μ - fine grinding
225 grit = 100/80 μ - fine grinding
160 grit = 125/100 μ - grinding
100 grit = 160/125 μ - grinding
80 grit = 200/165 μ - sharpening / rough grinding


 
Free shipping
Contact us for combined shipping  quote or bulk discounts. 

Knife sharpening with CBN combined bond stones


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Please read more about:

Shipping
Warranty, returns and refunds
Grain size conversion, selection and use of your tool

  • Modelo: CBNST150
  • Marca: Plant of Diamond Tools, Ukraine
Localización de la mercancía: Ucrania. Los derechos de importación, impuestos y cargos no están incluidos en el precio del artículo. Estas cargas son la responsabilidad del comprador.Consulte con la oficina de aduanas de su país para determinar cuáles serán estos costos adicionales antes de comprar.