There are more types of sand blasting guns than schools, generally divided into two types of pressure and negative pressure.
In terms of materials, sand blasting guns are divided into boron carbide, alloy steel, tungsten carbide, and iron. The most durable is a boron carbide sand blasting gun with a typical service life of 500-700 hours.
The single inlet is a straight tube with a Venturi structure.
The double air intake is divided into two sections, with eight small openings in the middle, which play the role of secondary air intake. Thereby, the efficiency of the blasting gun can be improved.
Negative pressure sand blasting gun, which is also used for box type sand blasting machine, has an air inlet port and a sand inlet port.
The negative pressure generated by the gas in the sand blasting gun sucks the sand material into the sand blasting and is then driven out of the sand blasting gun by the gas.
The component nozzles inside are relatively easy to damage and can be replaced. Its material is divided into two kinds of boron carbide and tungsten steel. Among them, boron carbide has a longer service life than tungsten steel. Generally, a boron carbide nozzle is selected for replacement.
There is no switch on this blasting gun, and an additional pressure switch is required.
The choice of the two guns is based on the blasting machine that has been purchased, and the selection of the blasting machine is based on the process.