Shot blasting machines for rust removal in the steel structure industry is widely applied and highly effective, closely related to their numerous advantages and the specific needs of the steel structure industry. The following are the specific reasons:
High rust removal efficiency: Shot blasting machines rapidly remove oxide scales, rust layers, welding slag, and other attachments by propelling steel shot (or other wear-resistant media) at high speed onto the surface of steel structures through rotating impellers. Compared with manual rust removal (such as sanding) or chemical rust removal (requiring soaking and cleaning), shot blasting machines can process large areas of workpieces in a short time, particularly suitable for the batch production needs of the steel structure industry.
Adaptability to complex structures: The shot blasting process uses steel shot propelled at specific angles and impact forces, which can penetrate complex areas of steel structures such as holes, gaps, and corners to achieve all-around rust removal, avoiding the omissions common in manual operations.
Uniform surface treatment standards: Shot blasting machines can precisely control rust removal grades and surface roughness by adjusting parameters like impeller speed, steel shot size, and blasting angle. This ensures that steel structure surfaces achieve uniform cleanliness and roughness requirements, providing an ideal substrate for subsequent painting (such as spraying, galvanizing) or welding.
Enhanced coating adhesion: The shot blasting process creates a uniform rough texture on the steel structure surface, increasing the contact area between the coating and the substrate. This significantly improves coating adhesion and durability, reducing issues like coating peeling and steel structure corrosion caused by rust in later stages.
Reduced environmental pollution: Unlike chemical rust removal (which uses strong acids, alkalis, and other chemicals prone to water pollution), shot blasting employs physical rust removal without chemical contamination. Dust generated during the process is collected and processed through integrated dust removal systems, meeting modern environmental requirements.
Lower safety risks: Shot blasting eliminates health hazards from manual contact with chemical agents and reduces work-related accidents from high-altitude operations or handheld tool use, enhancing production safety.
Suitable for various steel types: Shot blasting machines can be used for rust removal on multiple steel types, including carbon steel, alloy steel, and stainless steel, covering common profiles in the steel structure industry such as H-beams, I-beams, steel plates, and steel pipes.
Both pretreatment and repair: They are applicable not only for rust removal pretreatment of newly processed steel components but also for rust removal during the renovation of old steel structures (such as bridge and ship steel structure maintenance). Process parameters can be adjusted to meet different working conditions.
High automation level: Modern shot blasting machines can be integrated into production lines to achieve fully automated control of the entire process, including loading, rust removal, dust removal, and unloading, improving the intelligentization level of steel structure production.
