There are more types of sand blasting guns than schools, and they are generally divided into two types of pressure and negative pressure.
First, it is divided into two types of single inlet and double inlet.
The single inlet is a straight tube with a Venturi structure.
The double air intake is divided into two sections, with 8 small openings in the middle, which play the role of secondary air intake. Thereby, the efficiency of the blasting gun can be improved.
In terms of materials, sand blasting guns are divided into boron carbide, alloy steel, tungsten carbide, iron and so on.
The most durable is a boron carbide blasting gun , with a typical service life of 500-700 hours. Secondly, the service life of tungsten carbide and alloy steel is generally 300-400 hours, and the price is generally only 10 hours, and few people use it now.
Second, the negative pressure type sand blasting gun, which is also used in the box type sand blasting machine, has an air inlet interface and a sand inlet interface.
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.
There is no switch on this blasting gun, and an additional pressure switch is required.
There is also a manual blasting gun with a switch on the body. In other words, the Kellogg sand blasting gun, in which the component nozzles are relatively easy to damage and can be replaced. Its materials are divided into boron carbide and tungsten steel. The service life of boron carbide is longer than that of tungsten steel.
Generally, a boron carbide nozzle is selected for replacement. The choice of two types of blasting guns is based on the blasting machine they have purchased, and the selection of the blasting machine is based on the process.
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