How to use abrasive belts better
Release time:
2024-06-01
Abrasive belts, as the main varieties of coated abrasive products, have become very important in improving production efficiency
Abrasive belts, as the main varieties of coated abrasive products, have become very important in improving production efficiency, product quality grade and beautifying daily life. In order to make the abrasive belt give better play to its excellent grinding performance, prolong its service life and improve the surface quality of the workpiece, the following aspects should be paid attention to in the process of using the abrasive belt:
1, the abrasive belt should be used with open, in the machine before use should be hung (about 24 hours), so that it restores the natural shape, adapt to the environment, but in the wet season and humidity in the place of hanging time should not be too long.
2、Before going on the machine, the appearance quality of the abrasive belt should be checked. For example: whether there are defects, protrusions, traces of folding and others on the sanding surface; check whether the joints of the sanding belt are flat, whether there is any opening phenomenon, and whether there is any obvious protruding joint adhesive block on the back of the joints; whether there is any rupture of the edges of the sanding belt; and whether the size labeled is in line with the size you need. Whether the arrow direction of the sanding belt is the same as the running direction of the machine.
If it is precision polishing, it is recommended that you should check the thickness of the joints of the abrasive belt, the checking method is: with 0-25mm, accuracy of 0.01mm OD micrometer, to measure the thickness of the joints of the abrasive belt and the thickness of the thickness of the joints themselves (non-joints) the difference between the joints of the joints of the joints of the joints of the joints of the joints of the joint thickness tolerance. General precision requirements of the joint thickness tolerance should be less than 0.10mm.
3, check the contact wheel of the belt grinder, the graphite pad of the pressure grinding plate and the workpiece being processed whether it is normal, there is no foreign matter.
4、After loading the abrasive belt on the machine, it should start idling under low tension, and then gradually increase to the working tension after the abrasive belt runs smoothly. Currently used most of the domestic sanding belt is generally cotton cloth substrate, its breaking strength value is lower than the imported composite base and polyester cloth sanding belt, use, its tension should be lower than the choice of composite base and polyester cloth sanding belt, generally in the range of 1.5 ~ 2.5kg/cm2, do not exceed 3.0kg/cm2.
5、According to the material of the workpiece being processed, choose the appropriate cutting dosage (thickness of the cutter), feed speed, can improve the service life of the sanding belt.
6, if you need more than one sanding, a reasonable combination of grain size is the way to get the ideal grinding effect. MDF three sanding as an example: belt material is generally selected as GXC51 (all resin silicon carbide abrasive belt), the particle size selection for ①: P40-P80-P120 or ②: P60 (P50) - P100 -P150, of which P120, P150 abrasive belts with joints are butt form of the effect will be better.
Key words:
Grinding tools and abrasives
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