Tungsten Carbide Sandblasting Nozzle Loses Effectiveness
Tungsten Carbide Sandblasting Nozzle |
Erosion is the main failure to tungsten carbide sandblasting nozzle, and it refers to the solid surface with the fluid containing solid particles to make contact with the relative movement, the surface loss of material occurs, the fluid carrying the solid particles may be high-speed airflow, can also be flow, the former produces blast type erosion, the latter known as mud-type erosion. Tungsten carbide sandblasting nozzle wear a low erosion angle (≤15°) of erosive wear. Erosion behavior affect many factors, such as environmental parameters (such as the angle of attack, erosion rate, erosion of time and temperature, etc.), abrasive properties (such as hardness, particle size and shape, etc.), target properties (such as hardness, fracture toughness structure and microstructure.
Tungsten Carbide Sandblasting Nozzle Classification Structure
1. Straight hole tungsten carbide sandblasting nozzle. Its internal structure is only contraction and straight paragraphs, simple structure, easy to manufacture. This form of the inlet end of the nozzle can not overcome the phenomenon of the existence of the vortex, the pressure loss of the abrasive exit velocity less than 100m/s under 0.7MPa pressure conditions. Generally used for small sandblasting equipment.
2. Venturi tungsten carbide sandblasting nozzle. The structure is divided into the venturi nozzle contraction section, straight sections and diffusion segment of three parts, production difficulties. Work efficiency increased by 15% -40% higher than the straight hole nozzle, abrasive consumption reduced by 20%.
3. Dual Venturi tungsten carbide sandblasting nozzle. Constituted by around two nozzles, double Venturi nozzle blasting area than the standard venturi nozzle blasting area is large 35 percent, the exit velocity of about reduced blast media. This nozzle is typically used for surface treatment of large areas of moderate intensity.
4. The angle tungsten carbide sandblasting nozzle. With the direction of movement of the abrasive flow changes, it can be used to clean up the bridges, towers and other steel trusses, the inner surface of the pipe, so that these can clean up the difficult site by a direct blow to the abrasive, achieve the purpose of cleaning up.
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