How to control metal blasting and rust removal process
The blasting technology mainly treats the surface of metal and other workpieces, so that other coatings can better protect the surface of the workpiece. The blasting process can also be used to produce special effects on the surface of the workpiece, removing burrs, sandblasting and rusting, and solving other dirt and the like. The problem is to achieve the purpose of surface decoration.
Sand blasting and rusting generally require high-quality ceramic sand with hard particles, no soil and impurities. The abrasive ceramic sand is generally 0.5-1.5mm.
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How to control the sandblasting and derusting process? The compressed air used for the ceramic sand abrasive in the sandblasting process must be treated by the cooling device and the oil-water separator to ensure dryness and no oil; the oil-water separator must be cleaned regularly.
The distance from the nozzle to the surface of the base steel is preferably 100-300 mm, and the non-blasting part should be shielded before sandblasting.
The angle between the jet direction and the normal of the surface of the base steel is preferably 15° to 30°.
After sand blasting and rust removal, before the next process, if it is raining or other conditions that cause the surface of the base steel to be wet, after the environment reaches the construction conditions, dry the compressed air to dry the surface moisture and then rebuild. Sandblasting, do not reduce the abrasive requirements, so as not to reduce the roughness.
The nozzle of the sandblasting process should be sprayed evenly. Do not stop at a certain position for a long time, avoid sporadic operation, and do not spray on a large area. Consider the interval between the workpiece coating process and the surface pretreatment process. Other small positions or turning positions that cannot be sprayed can be blasted and rusted by hand or power tools.
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