What is the difference between a shot blasting machine and sand blasting machine?

 Shot blasting machine is generally used for regular shapes, etc., several blasting heads are up and down, left and right, high efficiency and low pollution. In the shipbuilding industry, shot blasting and sand blasting machines are commonly used. However, both the shot blasting machine and the sand blasting machine uses compressed air. Of course, it is not the floor shot blasting machine that has to use a high-speed rotating impeller. In shipbuilding and shipbuilding industries, floor shot blasters are generally used for steel plate pretreatment (removal of rust before painting); shot blasting equipment (ores used in repairing and shipbuilding industries) are mostly used for shaped ships or sub-parts. The function is to remove the old paint and rust on the steel plate and repaint it. In the shipbuilding and shipbuilding industry, the main function of shot blasting equipment and automatic sandblasting machine is to increase the adhesion of steel plate coating paint.

In fact, the cleaning of casting parts is not only with grit blasting machine. For large parts, the drum sand is generally cleaned first, which is to remove the riser of the casting part and roll it in the drum. The parts collide with each other in the drum, and most of the sand on the surface is removed. It is cleared before shot blasting or shot blasting.

Automatic Sandblasting Machine

The sandblasting machine is a method that uses compressed air to blow out the quartz sand at high speed to clean the surface of the part. It is also called sand blowing in the factory, which not only removes dust, but also removes oil by the way, which is very useful for painting. It is often used to remove rust on the surface of parts; to modify the surface of parts (the small wet sand blasting machine sold in the market is for this purpose, the sand is usually corundum, and the medium is water); in the steel structure, the application of high-strength bolts for connection is relatively advanced Because the high-strength connection uses the friction between the bonding surfaces to transmit force, the quality of the bonding surface is very high. At this time, the bonding surface must be treated by sandblasting.

The automatic sandblaster is used for complex shapes, easy to remove rust by hand, low efficiency, poor site environment, and uneven rust removal. General mobile sandblasting equipment has various specifications of sandblasting guns, as long as it is not a particularly small box, you can put the gun in to clean it. The supporting product of the pressure vessel—the head adopts sandblasting method to remove the oxide scale on the surface of the workpiece. The diameter of quartz sand is 1.5mm～3.5mm.