Knowledge of shot blasting machine
Shot is the use of high-speed rotation of the impeller to a small steel balls or throw out the small iron shot high-speed impact the part surface, so you can remove parts of the surface oxide layer. Shot or iron pills while high-speed impact the part surface, causing parts of the surface of the lattice distortion, the increased surface hardness, surface cleaning is part of a method of blasting used to clean the surface of the casting surface, or to strengthen the part deal with.
Shot for the general shape of the rules, under the head about throwing together a few, high efficiency, less pollution. Repair, shipbuilding, shot blasting, sand blasting is commonly used. Metal eyelet But whether shot or sand, are used in the form of compressed air. Of course, not shot on the non-high-speed rotation of the impeller can not. In the repair, shipbuilding in general, shot (small steel shot) is used in steel pre-treatment (rust before painting); sand (repair, shipbuilding using ore) is used in ship shape or section, role is on the plate to get rid of old paint and rust, re-painting. In the repair, shipbuilding, shot blasting, sand blasting steel main role is to increase the adhesion of paint coating. In fact, casting blast cleaning is not just used for general first conduct a large drum sand, the casting of the riser is removed and placed inside the drum roll, the drum parts in collision with each other, the surface of the sand most of the first then cleared away the shot or shot peening. Shot ball size is 1.5mm.
Studies have shown that the damage, the metal surface of tensile stress, compressive stress is much easier than the more, the surface compressive stress, the fatigue life greatly improved, therefore, fatigue fracture of the shaft and other components commonly used spray pill form the surface compressive stress, improve product life, in addition, the metal is very sensitive to the stretching metal, which is the tensile strength much lower than the compressive strength of reason, which is generally used metallic materials tensile strength (yield, resistance to pull) that the material properties of the reason.
Our daily car ride is the face plate to reinforce the use of shot peening, can significantly improve the fatigue strength of materials.
Shot with a motor driven impeller body is rotated by centrifugal force, the diameter of the ball in the 0.2 to 3.0 (with cast pill cutting pill \ stainless steel balls) thrown to the surface of the workpiece, the workpiece surface roughness up to a certain degree of , so that the workpiece become beautiful, or a change in the workpiece welding tensile stress is compressive stress, improve the life of the workpiece almost most areas for machinery, Excavator teeth shipbuilding, auto parts \ guns and tanks, aircraft parts surface \ bridge steel \ Glass plate \ pipeline and so on. sandblasting (pills) with compressed air as the driving force of the diameter of 40 to a 120 sand or pill about 0.1 to 2.0 wherein the surface of the workpiece, the workpiece to achieve the same effect. pelleted the different sizes, to the treatment effect is not the same. highlight: Shot peening can also play an enhanced role now our equipment into a misunderstanding, that the only shot to achieve the purpose of strengthening the U.S. for Japanese companies strengthen the Shot and use it! have their advantages, such as gear such as the workpiece, the angle shot of a pill can not change, only change the initial velocity with frequency, but it deals with large, fast, and Shot peening is just on the contrary, the effect of shot peening effect no good.
Blasting is to use compressed air to blow sand out of parts high-speed surface cleaning methods. Plant, also known as blowing sand, not to rust, oil removal can also be passing on the painting is very useful. Commonly used in parts of the surface rust; surface modification of parts (a small market selling is the use of wet sand blasting machine, sand is usually corundum, the medium is water); in the steel, the application of high-strength bolts to join is a more advanced method, as is the use of high strength connection between the combination of surface friction to transfer power, so the combination of high surface quality requirements, then you must use the combination of sandblasting on the surface for processing