Environmental Protection Characteristics of Dalian Sandblasting Processing

The sandblasting process can be divided into two types: air pressure spray gun and impeller shot blasting. The advantage of sandblasting process is that it can remove burrs after die-casting, stamping, flame cutting, and forging. It has a better effect on thinner workpieces and burrs with pores. It can clean residual sand particles during the sandblasting process, clean rust stains on cast iron or steel, clean heat treatment, burn, hot forging, rolling, and other thermal processes to remove oxide skin. In addition, in coating applications, it can remove existing coatings or protective layers, cover defects such as cracks or cold lines on castings, and provide a glossy surface.

Sandblasting (shot blasting) equipment is a process of cleaning and roughening the substrate surface using the impact of high-speed sand flow. Using compressed air as the power, a high-speed spray beam is formed to spray materials (nylon sand, zirconium sand, alumina sand, iron sand, etc.) onto the surface of the workpiece to be treated at high speed, removing dirt and burrs on the surface of the workpiece, improving the cleanliness, fatigue resistance, and other performance of the workpiece.

Environmental Protection Characteristics of Dalian Sandblasting Processing

1. Greatly improved the pollution of dust to the environment and the harm to workers' health;

2. Can be directly installed on the production line, saving production area and facilitating workpiece turnover;

3. Flexible working methods, variable process parameters, and able to adapt to the polishing processing requirements of different materials and precision parts;

4. During the working process, the abrasive is recycled and consumed in a small amount;

5. The main components have a long service life and are easy to repair.

The sandblasting equipment uses compressed air as the power to form a high-speed radiation beam to radiate the sprayed material (shot glass beads, steel balls, steel sand, quartz sand, diamond sand, iron sand, sea sand) to the surface of the workpiece to be disposed of at high speed. The laser cutting machine and the cast iron platform of the laser cutting equipment change the mechanical properties of the surface of the workpiece, due to the impact and cutting effect of the abrasive on the surface of the workpiece, By achieving a certain degree of cleanliness and varying roughness on the surface of the workpiece, the mechanical properties of the workpiece surface are improved, thereby improving the fatigue resistance of the workpiece, increasing its adhesion to the coating, prolonging the durability of the coating film, and facilitating the leveling and decoration of the coating. Impurities, positive colors, and oxide layers on the surface are removed, while coarsening the surface of the medium, The effect of residual stress on the surface of the substrate and improving the surface hardness of the substrate.

Among various types of sandblasting machines, the simple one is the sealed sandblasting chamber type. The operator can hold the workpiece through rubber gloves, pedal the spray gun switch, and observe the sandblasting process through a window. This type of spray gun is often used together with impeller shot blasting, and the distance between the spray gun and the workpiece is generally 150-200mm, with a processing diameter range of about 30mm. Secondly, sandblasting can also be divided into dry and wet types. For example, Pressure Vacuum belongs to direct pressure type and dry type, which directly sucks back abrasive and is mainly used for on-site maintenance work.