What is a sandblasting machine used for (what is the difference between the function of a sandblasting machine and polishing)

2023-04-18 01:48:48

Sandblasting equipment, sandblasting machine is powered by compressed air to form a high-speed jet of spraying materials (shot glass beads, steel balls, steel sand, quartz sand, diamond sand, iron sand, sea sand). The high-speed jet is used to treat the surface of the workpiece, and the laser cutting machine is used to cut the cast iron channel of the laser cutting equipment, causing changes in the appearance and mechanical properties of the workpiece. Due to the influence and cutting effect of abrasives on the surface of the workpiece, the cleanliness and roughness of the surface on the workpiece are different, which can improve the mechanical properties of the workpiece, thereby improving the fatigue resistance of the workpiece, adding adhesion between it and the coating, extending the durability of the coating, and removing impurities, noise, and oxide layers on the surface of the flowable paint and decoration. At the same time, the surface of the medium becomes thicker, and the surface of the substrate remains. Stress and improvement of substrate surface hardness.

Why do we need a sandblasting machine

1. Correct scratches and textures on the surface of injection molded products. If there are scratches, bumps, unclear textures, bright marks, and weld marks on the surface, some customers may require a smooth surface, while others may require a frosted surface, which is inconvenient for mold drying.

2. After welding, steel parts may have scratches and welding scars, but sandblasting can not only perfectly conceal them but also make them more beautiful.

3. Removing external impurities, such as rusting of iron machinery, sandblasting is a fast and effective rust removal method. In addition, the target materials of hanging fixtures in circuit board factories and vacuum plating factories may become contaminated with some coating impurities over time, affecting conductivity. Replacing them with new ones is expensive, and sandblasting can quickly remove external impurities, continuously recycle and save costs.

4. Reduce the light transmittance to turn the smooth surface into a frosted surface, such as glass lamps or transparent plastic lampshades. If not sandblasted, direct light can be very eye-catching. After sandblasting treatment, the surface will form a frosted surface, and the light projected will be very soft.

5. To remove burrs, such as zinc alloy die-casting parts, there are mold lines, burrs, and burrs after die-casting. Simply grinding cannot meet the requirements for a beautiful appearance, and sandblasting treatment is necessary to correct the unsightly appearance into a beautiful product.

The function of sandblasting machine

1. Clean the surface of the workpiece

Black (colored) castings such as oxide scale, residual salt, residual oil, etc. after heat treatment; Infinite processing of precision castings with oxide scales, sand particles, etc; Residue and micro burrs from machined parts; Intelligent transportation road monitoring for oxides, welding slag, etc. at welding sites; Cold and hot-rolled steel (section steel) with various cavity release agents and deposits such as oxide scale and corrosion layer; Sintering residues on the surface of ceramic components; Flaps for plastic molded parts; Radioactive elements on the surface of objects; Collisions between bridges, hydropower stations, ships, and buildings; Electronic police system UV detoxification device without negative pressure airport runway rubber layer; tram; Various pipelines and tanks; Oil stains and attachments on old mechanical parts; Paint residues, corrosion layers, and container attachments; The faulty sintered layer on porcelain; Scratches on the decorative surface;

Pre treatment of the surface of the workpiece before painting, painting, and baking; Before painting; Before metal spraying; Before zinc, chromium, and nickel; Before oxidation treatment, a sandblasting machine is required for cleaning

3. Change the physical and mechanical properties of the workpiece to improve or reduce the surface roughness; The fingerprint lock fingerprint access control inkjet printer can change the external tensile stress to compressive stress; Improve the smoothness of the appearance; Reduce the motion noise of the coupling; The friction coefficient of progressive appearance;

4. Surface gloss treatment of workpieces

Polishing of metal exterior surface; Obtain a dull or diffuse appearance; Polishing the surface of wooden products;

The difference between sandblasting machine and polishing machine

Polishing is the use of flexible polishing materials and abrasive particles or other polishing media to modify the surface of workpieces.

Polishing does not improve the scale or precision of the workpiece, but aims to achieve a smooth surface or mirror gloss, sometimes to remove gloss (extinction).

Polishing wheels are generally used for polishing things. Polishing wheels are generally made of multiple layers of canvas, felt, or leather, with metal plates clamped on both sides of the wheel. The wheel rim is coated with polishing agent, which is evenly mixed with micro abrasive powder and grease.

During polishing, a high-speed rotating polishing wheel (with a circumferential speed greater than 20m/s) is pressed onto the workpiece, causing the abrasive to roll and micro cut on the surface of the workpiece, thereby achieving a bright machined surface with a surface roughness generally ranging from RA0.63 to 0.01 micrometers; When using non greasy matte finishes, it can improve the appearance of bright surfaces by matte coating. Roller polishing is commonly used for mass production of bearing steel balls.

Rough polishing places a large amount of steel balls, lime, and abrasives on a tilted drum, and the drum rotates. The balls and abrasives randomly roll and collide inside the drum to achieve the intention of removing the convex edges and reducing the surface roughness. Intention, a margin of approximately 0.01 millimeters can be removed. During the cleaning process, steel balls and fur are placed in a wooden barrel that can rotate continuously for several hours to achieve a shiny and glossy appearance.

The polishing of precision line ruler is to immerse the machined surface in polishing liquid, which is mixed with chromium oxide powder and lotion with particle size of W5~W0.5. The polishing wheel is made of uniformly fine defatted wood or ultra-fine felt, and its motion track is uniform and dense. The surface roughness after polishing does not exceed RA0.01 microns, and there are no surface defects observed under a 40x microscope. In addition, there are methods such as electrolytic polishing.