Second, the hardness and crushing amount of shot blasting, these two factors will also affect the shot strength of the crawler shot blasting machine. If the shot blasting hardness is greater than the hardness of the parts, then changing the shot blasting hardness will not have much effect. If the shot blasting hardness is less than the hardness of the parts, the strength of shot blasting will decrease with the decrease of its hardness value. In addition, when the shot blasting of the shot blasting machine is damaged, it will constitute a drop in the ejection strength, and the broken steel shot will damage the appearance of the machine parts if its irregular shape is not cleaned up in time.