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Magnesium alloy polishing tips
Most magnesium die castings usually have scraps and mold lines. Therefore, when designing the product, these corner parts will be lowered and left alone, followed by machining, deburring (piercing), polishing, grinding and cleaning, film, and finally the surface treatment of the product. So what are the magnesium alloy polishing techniques? In the deburring and polishing operations, it is inevitable to produce a lot of magnesium powder, these magnesium powder after a period of time accumulated in the corner or floating in the air, in the case of open flame will produce dust explosion. The main points of magnesium alloy polishing steps are as follows:
Magnesium alloy processing
First, the frosted angle of magnesium alloy processing:
Use 80, 240, 320, 600, 800, 1000, 1200/1500 water sandpaper to grind sequentially, remember: each grinding should be perpendicular to the previous direction, as the number of sandpaper increases, the force should be reduced successively, remember: do not change direction again before the previous scratch has not been fully covered.
Second, the polishing of magnesium alloy processing:
Polishing can choose magnesium oxide, 1.5-0.5 synthetic diamond grinding paste, but the color of the grinding paste is not very good to use, the polishing process should be polished with absolute ethanol, and the sample should be polished in the center of the polishing machine, and the polishing cloth should be cleaned with clean water for each change of specimen.
Robot parts processing
About the corrosion of magnesium alloy: different materials corrosive agents are different, generally can choose 4-30% nitric acid alcohol, the length of corrosion time is best to try several times personal grasp, it is best to complete the corrosion after the matrix is bright. In addition, magnesium alloy material itself is a flammable and explosive material, dust explosion through magnesium alloy material, general consumption treatment method can not extinguish the fire, only with special fire extinguishers and dry sand can be extinguished. Note: The combustion produced by magnesium alloys cannot be extinguished with water, because water contains oxygen atoms, and the fire will only grow larger after touching.
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