News & Events2025-03-17

A shot blasting machine is a casting equipment used for cleaning castings. During operation, it can perform tasks such as shakeout, decoring, and cleaning on castings. When using shot blasting machines, manufacturers must pay attention to many precautions to ensure better use and operation. Many people do not care about how to correctly use pass-through shot blasting cleaning machines, but improper use often leads to a reduction in the service life of the shot blasting machine. Before using a shot blasting cleaning machine, it is necessary to regularly inspect the shot blasting cleaning equipment. When inspecting and cleaning the pass-through shot blasting cleaning machine, check whether the screen of the shot separator of the shot blasting cleaning machine is intact.

Shot blasting refers to a surface treatment method in which metal particles are projected onto the surface of a workpiece at a very high speed (about 70 meters per second) and at a certain angle, causing the steel shots to impact the working surface at high speed to remove impurities, attachments, and other substances that need to be cleaned from the workpiece surface. Under the negative pressure generated by the vacuum cleaner and the recoil effect of its own impact, the steel shots and impurities return to the machine's own separation system, which automatically separates the impurities and recovers the steel shots. The good steel shots continue to circulate inside the machine.

When cleaning with shot blasting, place as many workpieces as possible in the shot blasting area. This not only improves cleaning efficiency but also reduces the wear of the guard plate, allowing manufacturers to extend its service life. When no more workpieces can be added, adjust the directional sleeve to make the steel shots project as much as possible toward the workpieces, thereby increasing the service life of the guard plate and reducing its wear.

The shot blasting method involves spraying iron balls onto the processed surface, then removing the softer parts of the surface during spraying, resulting in a very shallow irregular orange-peel structure on the surface. The sprayed beads and debris are sucked in by a vacuum cleaner connected to the shot blasting machine, which is a special filtering system. The iron beads are automatically separated from the debris and returned to the bead circulation after cleaning. The debris is separated into an outlet box. To ensure the recovery of particles, there are also high-energy vacuum cleaners running in parallel with the shot blasting machine.

Horizontal runways use shot blasting to remove accumulated problems in parts of the aircraft runway, such as landing and takeoff strips, which are accident-prone areas, especially in rainy days. There are many reasons for this: the glue accumulated on the runway surface reduces or even eliminates the macro or micro anti-skid properties that the markings should have, leading to surface slippage or no gap with the aircraft tires.

During the cleaning process, the electrically controlled speed-regulating conveyor rollers feed the steel joints or steel into the projection area of the cleaning chamber. During cleaning, all sides of the workpiece are subjected to strong impact and friction in different coordinate directions, causing rusty coatings and dirt to peel off quickly, leaving the steel surface with a certain roughness. The inlet and outlet rollers on both sides of the cleaning chamber are used for loading and unloading workpieces. The shot and rust dust falling on the steel plate are blown off by a blower. The falling mixture of shot and dust is conveyed to the indoor hopper through a recovery screw. Vertical and horizontal screw conveyors concentrate it at the lower part of the elevator, which lifts it again to the separator at the upper part of the machine. The separated pure particles fall into the separator hopper for shot blasting recovery. The dust generated by the shot blasting machine is sent to the dust removal system through a suction pipe, the purified air is discharged into the atmosphere, and the particulate dust is captured and collected.