A Sand Blasting Nozzle accelerates the air and is abrasive because the mixture exits the tip of the hose. The taper and length of the nozzle's channel and outlet determine the design and velocity of the abrasive media exiting the nozzle. The combination of the liner material defines its resistance to wear. Tungsten Carbide Nozzle is one of the most important components of a sand blasting machine; it has the ability to either increase or decrease production rates. The taper and length of both the inlet and outlet surfaces have an impact on the pattern and velocity of the abrasive blast media that emerges from the nozzle during blasting. When selecting the proper size nozzle, a few factors need to be taken into consideration. The size of the sand blasting nozzle required depends on the amount of air that is available in CFM, the power of the blast machine, and the size of the blast hose being used.
Sand Blasting Nozzle is sized by the width of their orifices in 1/16-inch increments. A sand blasting nozzle has a 1/8-inch, 2/16-inch, and 3/16 orifice. The size of the nozzle orifice defines abrasive and air consumption. Air consumption is covered in cubic feet per minute (CFM) at a given pressure.
When choosing a blasting nozzle, consider the quantity of accessible air in CFM, the capacity of the shot blasting machine, and therefore the inside diameter of the piping, and also the blast and air hoses. For optimal appearance, these components must be compatibly sized. If an overlarge nozzle is used, low blast pressure and rapid decline of the blast hose will occur. If too small a nozzle is used, smooth media flow is going to be difficult to realize.
The operator inserts the nozzle part into a contractor-thread nozzle holder and screws within the nozzle, turning it by hand until it seats firmly against the machine. With all related equipment correctly constructed and tested, the operator points the nozzle at the surface to be cleaned and presses the remote handle to start blasting in a shot blasting cabinet or open area with a portable shot blasting machine. The operator holds the nozzle 18 to 36 inches from the surface and moves it evenly at a rate that produces the desired whiteness. Each pass should overlap slightly. The operator must replace the nozzle once the orifice wears 1/16-inch beyond its initial size.
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