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Classification and application of rust removal sandblasting machine
- 2020-08-04-

Classification and application of rust removal sandblasting machine

Sandblasting is to pass the dry sand flow under the action of purified compressed airRust removal sandblasting machineHigh-speed spray to the surface of the part, with the help of the strong impact of sand flow on the surface of the part to remove the slag burr, oxide and other dirt on the surface of the part, and present a surface treatment method with uniform roughness. Derusting sandblasting machine can be divided into dry sandblasting and wet sandblasting. The abrasive used for dry sandblasting is steel grit, alumina, quartz sand, silicon carbide, etc. Dry sandblasting machine has two kinds of mechanical sandblasting and air pressure sandblasting. The abrasive used by the wet sandblasting machine is the same as that of the dry sandblasting machine, and the abrasive can be mixed with water to form a mortar. Abrasives generally account for 20% to 30% (volume), and are constantly stirred to prevent precipitation. In order to prevent corrosion of steel parts, it is necessary to add corrosion inhibitors such as sodium nitrite in the water. In addition, the sand should be dried before being used again.

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Rust removal and sandblasting machines are widely used in the industrial field. Except for some precision parts and parts with special requirements, general workpieces can use this sandblasting equipment. Sandblasting is particularly suitable for surface preparation of painted paint and surface preparation processes such as electroplating oxidation and phosphating for removing paint bottom layer. The sand used by the rust removal sandblasting machine is mainly quartz sand. The sand size and air pressure used depend on the nature of the material and parts. After sandblasting, the surface treatment should be carried out in time for the parts. If the surface treatment cannot be carried out in time, temporary protective measures should be taken, which can be stored in sodium carbonate or sodium nitrite solution. Parts that need hard chromium plating also often use sandblasting treatment. Before electroplating opal white chromium, you should also use a derusting sandblasting machine to dull. After sandblasting, electroplating can improve the bonding force between the coating and the substrate.

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