Application of Abrasives in Automobile Manufacturing: Selection and Quality Improvement

For the pretreatment before applying the primer to the car body, white corundum abrasives can be selected. With high hardness, wear - resistance, and chemical stability, they can quickly remove the oxide layer, rust, oil stains, and old coatings on the metal surface. They can also create micro - roughness on the metal surface, enhancing the adhesion of the coating and ensuring a stronger bond between the coating and the metal.

If it is necessary to polish and deburr precision automobile parts, glass beads and garnet sand are good choices. They have moderate hardness and high purity, which can avoid damaging the substrate. For the deep cleaning and strengthening of automobile parts, steel shot and steel grit are the first choices. They have high hardness and strong impact force, making them suitable for removing stubborn stains.

To improve the surface treatment quality, in addition to choosing the right abrasive, the process parameters also need to be optimized. Reasonably adjust the blasting pressure to ensure the cleaning effect without damaging the surface of the parts. Adjust the nozzle angle to 30 - 45 degrees to ensure uniform blasting. Set the blasting time reasonably according to the requirements. In addition, automated and semi - automated equipment can be combined to reduce manual operation errors and improve production efficiency, thereby enhancing the overall quality of automobile manufacturing.

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