Resin grinding wheel is a widely used grinding tool. It is usually composed of abrasives, adhesives and reinforcing materials. Breaking during operation will not only cause death or serious injury accidents, but also cause serious damage to the workshop or the shell. In order to reduce and control the occurrence of hazards, it is necessary to understand and master the hazards expressed and their preventive measures.
Processing and storage
During transportation and handling, if the resin wheel bonded with phenolic resin is wetted, its strength will be reduced; uneven moisture absorption will cause the wheel to lose balance. Therefore, when loading and unloading the grinding wheel, it must be placed carefully and placed in a dry and cool place to maintain the normal state of the grinding wheel.
Second, the correct installation
If the resin grinding wheel is installed on an improper instrument, such as at the end of the main shaft of the polishing machine, accidents or breakage may occur. The main shaft should have an appropriate diameter, but not too large, so as to prevent the center hole of the grinding wheel from cracking. The flange should be made of low carbon steel or similar material, and should not be less than one-third of the diameter of the grinding wheel.
Three, test speed
The operating speed of the resin grinding wheel shall not exceed the maximum allowable working speed specified by the manufacturer. All grinders should be marked with spindle speed. The maximum allowable peripheral speed and corresponding speed of the resin grinding wheel are also displayed on the grinding wheel. For variable speed grinders and grinding wheels, special protective measures must be taken to allow hand-held grinders to be installed with appropriate allowable speeds.
Four, protection measures
The guard should have enough strength to resist the burst of the resin grinding wheel. Some countries have detailed regulations on the design and materials used for protective devices. Generally speaking, cast iron or cast aluminum should be avoided. The grinding operation opening of the guard should be as small as possible and should be equipped with an adjustable baffle.
The above are the protective measures that resin grinding wheels should take. Train the operators many times on the use of specifications and how to judge the quality of the resin grinding wheel to ensure that there will be no dangerous accidents when the workers are operating. Protect workers in all aspects.
Post time: Aug-15-2021