The Measures of improve abrasive belt service life as follows
1) Reduce abrasive belt initial wear . The belt initial wear is caused by the abrasive grain fall or break. In order to reduce the initial wear, the new belt is pre-ground with a reduced contact pressure for a period of time and then works normally. This method called trimming, but this is not same to grinding wheels trimming.
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2) The use grinding aids or grinding fluids to reduce the grinding rate in the stable grinding process.
Use grinding aids or grinding fluids is to reduce the root cause of wear—the friction between abrasives and workpiece, reduce grinding heat and reduce wear rate.
3) Increase the perimeter of the abrasive belt to reduce the action rate of the abrasive belt. Reduced belt action rate increases belt life. The conditions of the machine tool equipment allow, can increase the belt circumference, so that the belt can be cooled and increase the total number of abrasive particles.
4) Properly increase the belt speed. Properly increasing the speed of the abrasive belt not only reduces the surface roughness, but also reduces the abrasive wear of the abrasive particles, extending the life of the abrasive belt.
5) Gradually increase the grinding pressure. The abrasive belt enters the normal grinding stage. Gradually increasing the abrasive belt grinding pressure can strengthen the grinding process, break the abrasive grains, generate new abrasive, It's self-sharpening effect, and extend the abrasive belt service life .
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6) Improve the grinding performance of the belt itself. Good toughness abrasives have strong crush resistance and can prolong service life. The classic sand planting belts performance is better than gravity sand planting. In planting sand, reducing the binder thickness and planting sand density can increase the debris space in the belt, increase the bonding agent strength, and make the bonding more reliable. These measures can improve the belt grinding performance to a certain extent and prolong the belt service life .
The above measures are mainly to reducing the dull (abrasive and broken) abrasion of the abrasive belt. For the two forms of sticking and detaching, the hardness and sand-planting density of the abrasive belt can be adjusted. The control and selection of the belt construction parameters can be solved.
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