Steel pretreatment line manufacturers: how the shot blasting machine is to achieve uniform shot blasting effect?
Shot blasting machine is how to achieve uniform shot blasting effect? Many people are a little less clear, in fact, casting parts cleaning not just with shot blasting, for large parts generally need to first roller sand removal, is the casting parts of the riser mouth removed and placed in the um roller roll, by the parts in the roller collision with each other, the surface of most of the sand first clear off before the shot blasting.
Research shows that, in terms of damage, metal materials are much easier than compressive stress when there is tensile stress on the surface, the surface is compressive stress, the fatigue life of the material is greatly improved, therefore, for the shaft and other parts prone to fatigue fracture usually use shot blasting to form the surface compressive stress to improve product life, in addition, metal materials are very sensitive to tensile, which is the reason why the tensile strength of the material is much lower than the compressive strength, which is also Metal materials generally use tensile strength (yield, tensile) to indicate the reason for material properties.
The working surface of the steel plates of the cars we ride every day is peened with shot blasting, which can significantly improve the fatigue strength of the material and extend the life of the car.
Shot blasting is driven by a motor impeller body rotation, by the role of centrifugal force, the diameter of 0.2 ~ 3.0 of the projectile (cast shot cut shot stainless steel shot, etc.) thrown to the surface of the workpiece, so that the surface of the workpiece to achieve a certain degree of roughness, so that the workpiece becomes beautiful, or to change the workpiece welding tensile stress into compressive stress, to improve the service life of the workpiece. Almost used in most fields of machinery, shipbuilding auto parts aircraft parts guns tank surface bridge steel structure glass steel pipe and so on.
Shot blasting can play the purpose of cleaning and decontamination of the workpiece, the purpose of the next sequence for the preparation, that is, to ensure the roughness of the next process requirements, but also in order to ensure the consistency of the surface, the spray on the workpiece has a strengthening effect, casting almost every day with the use of shot blasting machine for the workpiece shot blasting.