The good or bad abrasive of sandpaper is the key to the quality
Sandpaper is commonly known as sandpaper. A material for abrasive use. It is used to grind the appearance of metal, wood, etc. in order to make it smooth and shiny, and is usually made by gluing various abrasive grains on the original paper. Depending on the abrasive substance, there are various types of emery paper, artificial emery paper, glass emery paper, etc. The characteristics of the abrasives determine the quality of the paper itself, such as the size, hardness, toughness and shape of the abrasive itself. The particle size scale of sandpaper abrasives is generally European (FEPA), American (CAMI), JIS (Japanese) and Russian (GOST).
Take the European grain size specification as an example, which is drawn up by the Federation of European Abrasives Manufacturers (FEPA).
1. coarse grit: P80, P60, P50, P40, P 36, P30, P24, p20, p16.
2. medium grit: P280, P240, P220, P180, P150, P120, P100.
3. fine grinding: P600, P500, P400, P360, P320.
4. Super-finish grinding: P1500, P1200, P1000, P800.
In addition to the abrasive itself, the raw material of the substrate, the degree of tear resistance, the elongation rate; the use of bonding enhancers, the participation of special filler substances can improve the cutting performance of the sandpaper.
The use of additional layers (supercoat) also affects the quality of the sandpaper. The supercoat can reduce friction in the area where the abrasive chips are formed, reduce abrasive wear and reduce the temperature in the grinding area to avoid discolouration of the workpiece due to high temperatures.
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Annie Tian
International Dept Manager
Mob:86-15689023600 86-0533-3119882