The open-type sandblasting machine is an ideal pretreatment equipment for removing rust, oxide scale, burrs, residual sand, oil stains, and other attachments from metal surfaces in a dry, liquid-free medium state, thereby enhancing the adhesion of the coating surface, strengthening the surface, and achieving a matte decorative effect. The Xingchen open-type series sandblasting machine is designed with standardized specifications, featuring stable and reliable operation and high processing efficiency.

1. Operating principle of open-type sandblasting machine:

This machine adopts a pressure-feeding sandblasting (shot blasting) mechanism, which utilizes the high-speed flow of compressed air in a high-pressure tank to create a high-pressure effect. The sand material inside the high-pressure tank is sprayed out through a sand conveying pipe, and then ejected at high speed onto the surface of the workpiece through a spray gun nozzle along with the compressed airflow, achieving the purpose of sandblasting processing.

II. Scope of application of open sandblasting machine:

It is used for cleaning steel structures, molds, fitness and amusement equipment, carving patterns on glass and stone tablets, shipbuilding, bridges, mines, machinery, oil pipelines, water conservancy projects, port construction, and other processes such as rust removal, spray pattern processing, oxide scale removal, and deburring. It can also be used for spraying and electroplating pretreatment processes to improve the adhesion of the coating (plating) layer on all surface treatments. It is used for spraying glass beads and strengthening the surface of polished parts.

III. Features of open-type sandblasting machine:

1. This machine adopts a straight-through sandblasting valve, which completely solves the problem of abrasive blockage, and the speed of sandblasting outlet can reach 200M/S

2. The sand valve is an important accessory of the sandblasting machine. Its main function is to control the opening and closing of sand materials and to adjust the sand flow rate during sandblasting steplessly. The quality of the sand valve directly affects whether the sandblasting machine can work normally. This type of sandblasting machine adopts the sand valve produced by our company, which features reliable quality, convenient adjustment, and simple maintenance. It is a widely adopted structure in various countries around the world. The opening of this sand valve is controlled by air pressure. The action process is as follows: when there is an air pressure signal at the control port, the piston of the sand valve drives the valve rod to lift up, and the sand valve opens. By adjusting the position of the adjusting cap, the opening amount of the sand valve can be adjusted, thus controlling the sand flow rate. The opening amount of the sand valve can be adjusted steplessly. The valve rod and valve sleeve in contact with the sand materials in the sand valve are made of hard tungsten carbide, which improves the service life of the sand valve.

IV. Advantages of open-type sandblasting machines:

It can replace the acid pickling and phosphating process, eliminating the issue of sewage charges. Rapid sandblasting for rust removal not only changes the surface roughness but also removes welding slag, burrs, and flash. With high efficiency, low cost, and good quality, it is unmatched by traditional chemical and manual rust removal methods. After sandblasting, the paint quality is excellent and the coating has a long lifespan, making it a commonly adopted process method internationally.