High Purity Boron Carbide B4c Sandblasting Venturi Nozzle with Higher Efficiency
Material: Boron Carbide (B4C).
Jacket: Aluminum / Polyurethane Protector.
The hardness of boron carbide is only secondary to diamond and CBN. The density of the boron carbide products produced by us is close to its academic density 2.52g/cm3. The advantages are: longer service life, high hardness, high wear-resistance ability, anti-corrosion, lower cost per use, reducing down time. It's the ideal material for sandblasting nozzle and mechanical seal.
The gas dynamics of venturi nozzle is better than straight-hole nozzle, the vortex is improved or ceased to exist, greatly reduced the pressure loss in the same pressure conditions. Abrasive exports increased to more than double the speed, efficiency than the straight-hole nozzle to increase 15% -40%, 20% lower abrasive consumption.
Boron carbide can be used to manufacture sandblasting gun nozzles, which is extremely hard and wear-resistant, no reaction with acid-base, high/low temperature resistance, high pressure resistance, crystal system: hexagonal, density: 2.52g/cm3, Mohs hardness: 9.36, microhardness 5400-6300kg/mm2, bending strength ≥400Mpa, melting point: 2450ºC. Because it has the characteristics of wear resistance and high hardness, Boron Carbide Sandblasting Nozzle will gradually replace the known carbide/tungsten steel and silicon carbide, silicon nitride, alumina, zirconia and other materials sandblasting nozzle in the future.
| Service Life |
| Nozzle Material |
Service life(h, by time) |
| Steel grit/shot |
Silica sand |
Brown aluminium oxide |
| Alumina |
20-40 |
10-30 |
1-4 |
| Tungsten Carbide |
500-800 |
300-400 |
20-40 |
| Silicon Carbide |
600-1000 |
400-600 |
50-100 |
| Boron Carbide |
2000-2500 |
1000-1500 |
500-1000 |
| Specifications |
| Item |
Specifications (mm) |
| I. D Φd |
Exit size |
Length L |
Thread size |
| BN1902-5.0 |
5.0 |
9.0 |
130 |
2''-4-1/2 (UNC) |
| BN1902-6.5 |
6.5 |
10.5 |
135 |
| BN1902-8.0 |
8.0 |
12.0 |
140 |
| BN1902-9.5 |
9.5 |
14.0 |
165 |
| Specifications |
| Item |
Specifications (mm) |
| I. D Φd |
Exit size |
Length L |
Thread size |
| BN1901-6.5 |
6.5 |
10.5 |
135 |
2''-4-1/2 (UNC) |
| BN1901-8.0 |
8.0 |
12.0 |
150 |
| BN1901-9.5 |
9.5 |
14.0 |
165 |
| BN1901-11.0 |
11.0 |
15.5 |
190 |
| BN1901-12.5 |
12.5 |
17.0 |
215 |
Note: Special requirement on specifications can be satisfied through discussion.
Kumthai's boron carbide nozzles can be customized. Please tell us the specifications or send us the drawings, we will make a quotation according to your drawings and send the prices to you for your reference.
High Quality High Purity Boron Carbide (B4C) Powders from Coarse Grit Sizes to Superfine Micron Sizes
Boron Carbide Powder (B4C) a black crystal powder, is one of the hardest Man-Made materials, its hardness with Mohs hardness 9.36 and microscopic hardness 5400-6300kg/mm2 is only near upon diamond, its density is 2.52g/cm3 and melting point is 2450ºC, The boron carbide possesses properties of endurance hi/low temperature, no reaction with either acids or alkalis, high grinding efficiency, no magnetism. It is a good replacement of diamond. Boron carbide also possesses the special properties of light quality, neutron absorbing, semi-conductivity, etc., so it is used for armed forces and nuclear industry.
Boron carbide is widely applied as follows: boriding refractory, ion transfusion, film layer as well as grinding, polishing, drilling hard metal alloys, jewels, etc. Meanwhile, it is main material for the wear-resisting parts, precise meter-age element, precise spray nozzle, sealed washer, smelting boron steel, boron alloy, etc.
Boron carbide has showed many better properties of physics and chemistry in the hi-science/technology field.
| Physical Characteristics |
| Item |
Crystal system |
Crystal color |
Density |
Melting point |
Mohs hardness |
Micro hardness |
| Boron carbide |
Hexagonal |
Black |
2.52g/cm3 |
2450ºC |
9.36 |
5400-6300kg/mm2 |
| Chemical Composition |
| Grit |
Chemical composition(%,by weight) |
| B4C |
T.B |
F.B |
T.C |
F.C |
Fe2O3 |
| F4-F90 |
≥95 |
≥76 |
≤0.3 |
18-21 |
≤1.5 |
≤0.3 |
| F100-F220 |
≥96.5 |
≥76 |
≤0.3 |
18-21 |
≤1.6 |
≤0.3 |
| F230-F320 |
≥96 |
77-81 |
≤0.4 |
18-21 |
≤1.5 |
≤0.2 |
| F360-F500 |
≥95 |
76.5-80 |
≤0.4 |
18-21 |
≤1.8 |
≤0.2 |
| F600-F800 |
≥94 |
76-80 |
≤0.45 |
18-21 |
≤2.0 |
≤0.25 |
| F1000-F1200 |
≥93.5 |
76-79 |
≤0.5 |
18-21 |
≤2.5 |
≤0.3 |
Note: Special requirement on chemical composition can be satisfied through discussion.
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