Why Metal Should Be Sandblasted

Sandblasting is a process of surface treatment of workpieces. Compressed air is used as power to form a high-speed jet beam to spray material (copper ore, quartz sand, emery, iron sand, sea sand) at high speed onto the surface of the workpiece to be treated, so that the appearance or shape of the surface of the workpiece is changed. Due to the impact and cutting effect of the abrasive on the surface of the workpiece, the surface of the workpiece obtains a certain degree of cleanliness and different roughness, so that the mechanical properties of the surface of the workpiece are improved, thus improving the fatigue resistance of the workpiece, increasing the adhesion between it and the coating, extending the durability of the coating film, and also facilitating the levelling and decoration of the coating.

Features of sandblasting

I. Sandblasting is the most thorough, versatile, rapid and efficient method of cleaning.

II. Sandblasting can be done at any choice between different roughnesses, which is not possible with other processes. Hand sanding can produce a rough surface but is too slow, and chemical solvent cleaning is too smooth for coating adhesion

The benefits of sandblasting the surface of metal surfaces are as follows

(a) workpiece coating, workpiece bonding pre-treatment sandblasting can remove all the dirt from the surface of the workpiece, such as rust skin, and establish a very important foundation pattern on the surface of the workpiece (that is, usually called the hairy surface), and can achieve different degrees of roughness by swapping abrasives of different grain sizes, such as the abrasives of Feizhan abrasives, greatly improving the bonding of the workpiece with the coating and plating. Or make the bonding parts bonding more firmly and better quality.

(B) casting parts burr surface, heat treatment after the workpiece cleaning and polishing sandblasting can clean up the casting and forging parts, heat treatment after the workpiece surface of all the dirt (such as oxidation skin, oil and other residues), and the workpiece surface polishing to improve the workpiece finish, can make the workpiece to reveal a uniform and consistent metal original colour, so that the workpiece appearance more beautiful, good-looking.

(C) machined parts burr cleaning and surface beautification sandblasting can clean up the surface of the workpiece of tiny burrs, and make the surface of the workpiece more flat, eliminating the harm of burrs, improve the grade of the workpiece. And sandblasting can hit a very small rounded corner at the junction of the workpiece surface, making the workpiece appear more beautiful and more precise.

(D) improve the mechanical properties of the parts mechanical parts by sandblasting, can produce a uniform fine bumpy surface on the surface of the parts, so that the lubricant is stored, so that the lubrication conditions improve, and reduce noise to improve mechanical life.

(E) the role of finishing for certain special purposes workpiece, sandblasting can achieve different reflective or matte at will. Such as stainless steel workpiece, plastic polishing, jade polishing, wooden furniture surface matte, frosted glass surface pattern pattern, and fabric surface furring processing.