Shot Blasting And Cleaning Machine

Professional Shot Blasting And Cleaning Machine manufacturer is located in China, including Shot Blast Cleaning,Steel Shot Cleaning Machine,Shot Blast Cleaning Equipment, etc. 

Product Usage:
The shot blasting machine uses the steel shot to be sent to the high-speed rotating disc, and uses the centrifugal force to make the high-speed thrown steel shot hit the surface of the part to achieve the purpose of polishing. The shot blasting machine can generate compressive stress on the surface of the part, Moreover, there is no silicon-containing powder, and the pollution to the environment is small.
The main uses of the shot blasting machine are as follows:
①The shot blasting machine generates compressive stress on the surface of the parts, which can improve their fatigue strength and ability to resist tensile stress corrosion;
②The shot blasting machine can correct the distorted thin-walled parts;
③The process of Shot Blasting Cleaning Machine replaces the general cold and hot forming process, and the forming of large thin-walled aluminum parts can not only avoid residual tensile stress on the surface of the parts, but also obtain favorable compressive stress for the parts. It should be noted that the use temperature of the parts processed by the shot blasting machine should not be too high, otherwise the compressive stress will automatically disappear under high temperature, thus losing the expected effect. Their operating temperature is determined by the material of the parts. For general steel parts, it is about 260-290 °C, and aluminum parts are only 170 °C.

Working principle
The shot blasting cleaning machine is realized by relying on the high-speed rotating throwing head to vigorously throw the abrasive particles to the surface of the workpiece, and there are several blades inside the throwing head.
When working, the abrasive enters the center of the throwing head through the feeding port. There is a shot dividing wheel in the center of the throwing head that rotates with the throwing head. The outside of the shot dividing wheel is a directional sleeve. Send to the end of the blade near the center of the throwing head. Due to the centrifugal force, the abrasive particles are accelerated along the length of the blade until they reach the tip of the blade and hit the workpiece surface at a very high speed.
The function of the pelletizing wheel is to correctly "feed" the abrasive to the blade according to certain requirements. Once the opening of the pelletizing wheel is seriously worn, the abrasive will hit the end of the blade, causing abnormal wear of the blade, and the divergent flow of the abrasive will become without rules. Therefore, it is necessary to regularly check the wear of the pelletizing wheel according to the requirements of the instruction manual and replace the severely worn pelletizing wheel in time.
The location of the directional sleeve opening determines where the abrasive is fed to the blades by the pelletizing wheel. The shape of the opening on the directional sleeve affects the shape of the abrasive divergence and the size of the hot zone. The so-called hot zone, even an area where the abrasive is concentrated on the abrasive diverging surface, is caused by the uneven distribution of the abrasive on the blade. The positioning of the adjustable directional sleeve can be properly adjusted according to the wear of the opening to ensure that the throwing head works in a good operating state.
The blades in the throwing head are in direct contact with the abrasive, and its quality is closely related to the performance of the throwing head.
The wear resistance of the blade directly determines the life of the blade and the operating cost of the shot blasting machine. Therefore, the blades of the blasting head must be made of high wear-resistant materials. The wear resistance of the blade is not only related to the material of the blade, but also closely related to the working conditions of the shot blasting machine. For example, if there is 1% sand in the abrasive, the life of the blade will be shortened by 80%. It is not an exaggeration to say that the life of the separation device determines the life of the shot blasting machine.
Worn or cracked blades can cause vibration when the impeller rotates at high speed. Therefore, the integrity of the blades should be checked frequently, and the defective blades should be replaced in time. In order to ensure the stability of the throwing head, the blade replacement must be carried out in pairs, that is, the blade opposite to the unsatisfactory blade must be replaced at the same time to obtain a good dynamic balance. If it is suspected that a problem with the blades is causing the throwing head to not work properly, all blades need to be replaced.
The casting defect of the blade will inevitably accelerate the wear of the blade, which is even more serious when chilled cast iron shot is used as the abrasive. After analyzing the worn blades, it is believed that the blades with casting defects will cause the abrasive particles to bounce during the movement. If there is sand in the abrasive, it will increase the wear of the blade.