In the aerospace new materials industry, the processing precision of key materials such as graphite and special aluminum alloys directly affects the performance and safety of spacecraft. Grinding, as a key step in material processing, generates a large amount of dust. This dust not only pollutes the working environment and harms the health of operators but may also affect the processing precision of materials and even pose safety hazards. Therefore, selecting a suitable polishing dust removal equipment is crucial.
Graphite materials is commonly used in the aerospace industry to manufacture high-temperature resistant components for spacecraft, such as rocket engine nozzles. However, it is soft, brittle, and produces fine, easily dispersed dust particles. Therefore, this kind dust easily disperse into the air. If the grinding dust collector's sealing is not good, dust will leak into the workshop environment.
On the one hand, fine graphite dust attach to the surface of the equipment and components, affecting the precision of subsequent processing steps; on the other hand, long-term inhalation of graphite dust can cause serious damage of worker.
Therefore, for grinding graphite materials, the primary consideration when selecting a grinding cabinet is its sealing performance. A high-quality grinding dust removal cabinet should have a fully enclosed structure, with a sealing strip between the cabinet door and the cabinet body to ensure that dust does not leak from gaps.
Meanwhile, graphite dust are very fine, and ordinary filtration equipment are not enough to effectively capture them. Therefore, the filtration system of the grinding dust removal equipment must have a high-efficiency fine dust filtration capability. For example, Moland uses HEPA filters for filtration, which effectively collects graphite dust and also effectively reduces equipment noise.
Special aluminum alloys are widely used in the aerospace field. For example, structural components such as the body and frame of spacecraft are often made of special aluminum alloys.
It has the characteristics of high strength and high hardness, and the dust particles generated during grinding are also relatively hard. If cannot collect these dust in time, they will not only cause wear and tear on grinding tools, shortening their lifespan, but may also scratch the material surface, affecting surface quality and processing precision.
Furthermore, some special aluminum alloy dusts cause a risk of combustion and explosion under certain conditions. Based on these characteristics, when selecting grinding dust collector, we must consider its dust collection efficiency and explosion-proof performance. The grinding cabinet should equip with a powerful dust extraction system. Through reasonable air duct design, and ensured stable negative pressure in the grinding area. This is to quickly suck the generated aluminum alloy dust into the collection device, reducing the dust's residence time and diffusion range in the air.
Regarding explosion-proof performance, the motor and electrical components of the grinding cabinet should use explosion-proof, and the body material should also have a certain explosion-proof capability. Additionally, the sanding dust collector must install a dust concentration monitoring device. When the dust concentration reaches a dangerous value, it should promptly alarm and take appropriate protective measures to prevent the occurrence of an explosion accident.
In the field of aerospace new material processing, the scientific and rational selection of grinding cabinets is crucial for two materials with vastly different properties: graphite and special aluminum alloys.
For graphite: Prioritize sealing and fine dust filtration capabilities.
For special aluminum alloys: Emphasize dust collection efficiency and explosion-proof performance.
Choosing the right grinding dust collector not only effectively controls dust pollution and protects the health of operators, but also improves material processing precision, ensuring the quality and safety of spacecraft production. In the pursuit of excellence in the aerospace industry, every detail deserves our careful attention.
