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The specific reasons and countermeasures of the abrasive leakage of shot blasting machine

Why does the shot blasting machine have abrasive leakage?

Shot blasting machine is mainly composed of four parts, which are blast turbine, abrasive collection, separation and transportation system, carrier and dust collector system. When the shot blasting machine is in operation, a part of the steel grit will inevitably be scattered around the shot blasting machine, that is, in the working area. If it is not removed in time, it will cause people to slip when walking and endanger personal safety. Shot blasting machine uses high-speed projectiles thrown by the blast turbine to clean or strengthen the casting surface of casting equipment.

The shot blasting machine can simultaneously shake out, remove cores and clean the castings.

Shot blasting technology is a processing technology in which steel grit and steel shots are shot and impacted on the surface of a material object at a high speed through a blast turbine. Compared with other surface treatment technologies, it is faster, more effective, and can be partially retained or the casting process after stamping.

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What are the specific reasons for the leakage of shot blasting machine?

Reason 1: Due to the shape of the workpiece, some steel shots are brought out. Or, when the shot blasting is completed and the workpiece is hanging down, part of the steel shot falls on the ground or is still on the workpiece. If it is not cleaned in time, it will accumulate more and more and may be carried to the next process. 

Reason 2: After the shot blasting machine is used for a long time, its sealing performance decreases, which makes the sealing effect worse. Then, on some parts, steel shots will appear.

Reason 3: The top of the shot blasting chamber in the shot blasting machine is not completely sealed. Therefore, after the steel shot hits the surface of the work piece, it may fly out due to the rebound effect, which may cause the shot leakage.

Solution to the problem of sand leakage of shot blasting machine:

  1. Replace the worn out shot blasting machine parts in time, such as the protective plate in the blast turbine, the protective plate in the blasting chamber, etc.

  2. Replace the sealing equipment in time, such as: sealing rubber sheet, rubber curtain strip, etc.

  3. The top of the shot blasting chamber of the roller conveyor shot blasting machine is not completely sealed. When the steel shot hits the surface of the workpiece, the steel shot will rebound, the ejection trajectory is uncertain, and a small part of the steel shot may leak. To deal with the leakage of the through-type shot blasting machine: a set of steel shot collection device can be added at the exit of the shot blasting machine. The steel shot collection device is to collect the taken steel shots and put them in the conveying screw of the shot blasting machine to make it enter the elevator, so as to realize the recycling of steel shots without causing waste.

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