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Several factors affecting the cleaning efficiency of shot blasting machines

The shot blasting machine is particularly suitable for surface cleaning and shot blasting of castings, forgings, aluminum alloy castings and steel structural parts of many varieties and small batches to remove a small amount of sand, sand core and oxide scale on the surface of the workpiece; it is also suitable for Surface cleaning and strengthening of heat-treated parts; especially suitable for cleaning slender and thin-walled parts that are not suitable for collision. In fact, there are more than so many factors that affect the cleaning efficiency of the shot blasting machine, but also include many factors such as accessory materials, working load, temperature, humidity, environment, lubrication, surface processing quality, and movement properties. So in the daily shot blasting process, what are the major factors that affect its cleaning efficiency? Qingdao Qinggong Machinery will give you a brief introduction:

1. The size of steel shot about shot blasting machine

For the shot blasting machine, the larger the steel shot, the greater the impact kinetic energy and the greater the shot blasting strength, but the coverage rate of the steel shot decreases. Therefore, while ensuring the strength of shot blasting, smaller shot blasting should be used as much as possible. In addition, the size of shot peening is also limited by the shape of the part. When there is a groove on the part, the shot blasting diameter should be less than half of the radius of the inner circle of the groove. Shot blasting particle size is often selected between 6-50 mesh.

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2. The steel shot hardness of the shot blasting machine

When the hardness of the steel shot of our shot blasting machine is higher than that of the part, the change of its hardness value does not affect the shot blasting strength; on the contrary, when the steel shot is lower than the part, if the shot blasting hardness value decreases, the shot blasting strength also decreases.

3. Shot blasting speed

When the speed of the steel shot (shot blasting) thrown by the shot blasting machine increases, the shot blasting strength also increases, but when the speed is too high, the shot blasting damage also increases. So here we need to find a reasonable point.

4. Shot angle of shot blasting machine

When the shot blasting jet is perpendicular to the surface to be sprayed, the shot blasting strength is the highest, so it should generally be kept in this state for shot blasting. If limited by the shape of the part, when small angle shot peening is necessary, the size and speed of shot peening should be appropriately increased.

The last aspect is the amount of broken shot blasting

The kinetic energy of shot blasting fragments is low. The more shot blasts that are broken, the lower the shot peening strength, and irregular fragments will scratch the surface of the part. Therefore, the fragments should be removed frequently to ensure that the completeness of shot blasting is greater than 85%. The shot blasting equipment is basically the same, only some auxiliary devices are needed to more strictly control the shot blasting process.

The above is the "several major factors that affect the cleaning efficiency of shot blasting machines" summarized by the technicians of Qingdao Qinggong Machinery from five aspects. Let us pay attention to the normal use of shot blasting machines and maximize the use of The role of pill machine. To achieve the best results.

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