Definition and materials of sandpaper and sand cloth
Sandpaper is a surface grinding tool, suitable for the grinding and grinding of wood, metal, plastic and other materials. It usually uses abrasive particles glued to paper-based materials, and is mostly used for hand grinding and machine grinding.
sand cloth is a kind of abrasive tool made of woven cloth base material, its substrate is relatively tough, suitable for grinding complex surfaces, such as curved surface, convex surface, concave and other places. It is not easy to deform and has good wear resistance.
Second, the difference between sandpaper and sand cloth
1. Different materials
Sandpaper is used to adhere to the paper base, and sand cloth is used to weave the cloth base material. The most significant difference brought about by this different substrate is the difference in strength: the sandpaper made from paper as the base material has low strength, and the emery cloth uses braided cloth as the base material, which has high strength.
2. Different uses
Sandpaper is suitable for flat grinding and grinding, while sand cloth is suitable for complex surface processing, such as curved, concave and so on.
3. Different grinding accuracy
The particle size distribution of sandpaper is relatively uniform and the precision is high, but because the strength of the substrate is not enough, coarse particles of sand can not be used, and the processing efficiency will be correspondingly reduced, which is generally suitable for precision machining. sand cloth substrate strength, can use coarse sand, processing efficiency is higher, but its accuracy is slightly inferior to sandpaper.
Third, how to correctly choose their own sandpaper or sand cloth
1. How to choose sandpaper
When choosing sandpaper, the particle size and abrasive material of sandpaper should be considered first. The particle size should be selected according to the hardness and roughness of the material processed, and needs to be adjusted according to the different processing effects required. Generally used for redwood furniture grinding, acrylic, PU material grinding sandpaper granularity is finer, the particle size selection between 200-600, for metal grinding can choose the grit of 80-120 sandpaper.
2. How to choose emery cloth
When selecting sand cloth, the weaving method and the tightness of the cloth should be selected according to the shape and surface condition of the processing object. For the surface processing, you can choose wet water fiber emery cloth, the treatment effect is better.
In short, the selection of sandpaper and sand cloth should be flexible according to their actual needs, the selection of the appropriate abrasive can improve the grinding efficiency, and can get better processing results.
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