Sandblasting and rust removal is driven by compressed air to form a high-speed jet beam to spray the spray (copper ore, quartz sand, corundum, iron sand) at high speed to the surface of the workpiece to be treated, so that the appearance or shape of the workpiece changes.
Due to the impact of the abrasive on the surface of the workpiece and the cutting action, the surface of the workpiece is obtained with a certain degree of cleanliness and different roughness, so that the mechanical properties of the surface of the workpiece are improved, thereby improving the fatigue resistance of the workpiece, increasing it and coating The adhesion between the layers extends the durability of the coating and also facilitates the leveling and decoration of the coating.
1. Workpiece coating, pre-bonding treatment, blasting can remove all dirt such as scale on the surface of the workpiece, and establish a very important basic pattern on the surface of the workpiece (the so-called rough surface), greatly improving the workpiece. The combination with paint and plating. Or make the bonding part stronger and better quality.
2, the rough surface of the casting, the cleaning and polishing of the workpiece after heat treatment can clean the castings and forgings, all the dirt on the surface of the workpiece after heat treatment (such as oxide scale, oil stains, etc.), and polishing the surface of the workpiece to improve the smoothness of the workpiece. The workpiece can be exposed to a uniform metallic color, making the appearance of the workpiece more beautiful.
3. Machining parts burr cleaning and surface beautification blasting can clean the surface of the workpiece with small burrs, and make the surface of the workpiece more flat, eliminating the damage of burrs and improving the grade of the workpiece. And sand blasting can make small rounded corners at the intersection of the workpiece surface, making the workpiece look more beautiful and more precise.
4. Improve the mechanical properties of the parts After the sandblasting, the mechanical parts can produce uniform and fine concave and convex surfaces on the surface of the parts, so that the lubricating oil can be stored, thereby improving the lubrication conditions and reducing the noise and improving the service life of the machine.
5, the role of light decoration For some special-purpose workpieces, sandblasting can achieve different reflection or matt. Such as stainless steel workpieces, polishing of plastics, polishing of jade, matt surface of wooden furniture, pattern of frosted glass surface, and texturing of fabric surface.
Pre-treatment stage of sandblasting process: The pre-treatment stage of sandblasting process refers to the treatment of the surface of the workpiece before the workpiece is sprayed and sprayed with the protective layer.
The blasting process uses compressed air as the power to form a high-speed jet beam, which sprays the spray material at a high speed to the surface of the workpiece to be processed, so that the appearance of the outer surface of the workpiece changes. The surface of the workpiece is obtained due to the impact of the abrasive on the surface of the workpiece and the cutting action. A certain degree of cleanliness and different roughness improve the mechanical properties of the workpiece surface.
Classification of sandblasting machine
1.Suction dry sand blasting machine
Working principle: The suction type dry sand blasting machine uses compressed air as the power to pass the negative pressure formed in the spray gun through the high-speed movement of the air flow, and passes the abrasive through the sand conveying pipe. The gun is sucked into the nozzle and ejected through the nozzle to be sprayed onto the surface to be processed to achieve the desired processing.
2.Press-in dry blasting machine
Working principle: The press-in type dry blasting machine uses compressed air as the power to pass the abrasive through the sand outlet valve through the working pressure established by the compressed air in the pressure tank. Pressed into the sand pipe and injected through the nozzle, sprayed onto the surface to be processed to achieve the desired processing.
3.Liquid blasting machine
The biggest feature of the liquid blasting machine relative to the dry blasting machine is that it controls the dust pollution during the blasting process
and improves the working environment
of the blasting operation.
Source of this article:https://ympcnc.com/