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The difference between sand blasting machine and shot blasting

  • August 11, 2021

The difference between sand blasting machine and shot blasting


1. The working principle is different:

Shot blasting uses a high-speed rotating impeller to throw small steel shots or small iron shots out to hit the surface of the part at high speed, so the oxide layer on the surface of the part can be removed.

Sandblasting is a method of using compressed air to blow out the quartz sand at high speed to clean the surface of the part.


2.Different materials used

The steel shots and iron shots used in shot blasting are not actually shots. To be precise, they are small steel wires or small steel rods. They only look like shots after a period of use.

The so-called sandblasted sand is just river sand, which is no different from that used for construction, except that the sandblasted sand is screened, contains less mud, and has a particle size specification. Of course, some industries are also different. For example, real steel shot is used for shot blasting in the shipbuilding industry, and metal ore (not river sand-quartz sand) is used for sand blasting.


3. Different functions:

The main function of sandblasting is to remove rust and scale on the surface, such as parts after heat treatment.

Shot blasting has many functions. It not only removes rust and surface oxides, but also improves surface roughness, removes machining burrs of parts, eliminates internal stress of parts, reduces deformation of parts after heat treatment, and improves surface wear resistance of parts. Pressure capacity, etc.


4. Different materials used:

The steel shots and iron shots used in shot blasting are not actually shots. To be precise, they are small steel wires or small steel rods. They only look like shots after a period of use.

The so-called sandblasted sand is just river sand, which is no different from that used for construction, except that the sandblasted sand is screened, contains less mud, and has a particle size specification. Of course, some industries are also different. For example, real steel shot is used for shot blasting in the shipbuilding industry, and metal ore (not river sand-quartz sand) is used for sand blasting.


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