Shot blasting, as a method of steel surface treatment method, has been developed for nearly a century. Since the first shot blasting machine appeared in America a hundred years ago, shot blasting has been undergoing great improvement and innovation. The very first movable shot blasting machine appeared in the late 1970s, but it had to be pulled by hands. Then, blasting machines driven by motor, hydraulic device and diesel engine came to the fore one after another.

Wheel blast machine is just a perfect example of such innovation. This advance in the machine construction greatly boosts the efficiency of operations. At the same time, the material and size of the shot also gradually varied to cater to the surface treatment of steel items of different width. This also greatly widens the scope of the applications of shot blasting machine. Now, its applications have been expanded into a wide array of industries including auto industry, mechanical equipment manufacturing, and foodstuff processing etc.

Besides these innovations, shot blasting machine also enjoys certain positive factors compared to other steel surface treatment methods. Sandblasting machines is device which blasts metal shots onto the steel surface at a speed as high as 70 meters per second. The powerful blasting force will then remove the impurities attached on the surface of steel item to be treated. Under the influence of negative pressure imposed by dust extraction equipment, the metal shots, together with the impurities will be drawn back into the split system for recycled use. So shot blasting is a comparatively low-cost means for steel surface treatment.

Besides, shot blasting machine produces no substances bad for the environment. The used metal shots are drawn back into the machine for recycled use. The impurities removed are also collected by the machine for further disposal. In contrast, highly corrosive materials like nitric acid had once been used to remove the impurities over the steel surface. But this treatment method was gradually abandoned as a consequence of its potential threat to human health as well as the environment. So as the world, especially developed nations, gradually drafts stricter laws and regulations on protection of environment, more funding will head over to the research and advancement of more advanced shot blasting machines.

In all, the market potential of shot blasting treatment is self-evident as its application has expanded from heavy industry into wider sectors. And it could be predicted that more sophisticated shot blasting equipment will appear in future as the treatment method continues to develop.