1. The problem of wear

　　Any grinding wheel has its certain wear and tear requirements. When the wear condition reaches a certain level, it must be replaced with a new grinding wheel. It is not necessary to use excessive wear and tear in order to save materials. This is an extremely unsafe violation. It is generally stipulated that when the grinding wheel is worn to a diameter that is 10mm larger than the diameter of the chuck, a new grinding wheel should be replaced.

　　2, the issue of expiration date

　　The new grinding wheel brought out from the warehouse is not necessarily a qualified grinding wheel, and even the new grinding wheel bought from the manufacturer is not necessarily a qualified grinding wheel. Any grinding wheel has a certain expiration date. If it is used within the expiration date, it is a qualified grinding wheel; if it is used beyond the expiration date, it is not necessarily a qualified grinding wheel. The regulations stipulate that "the grinding wheel should be used within the validity period, and the resin and rubber bond grinding wheel must undergo a rotation test after being stored for one year, and the qualified one can use it".

3. The problem of texture

　　In the course of use, if there are local cracks in the grinding wheel, stop using it immediately and replace it with a new grinding wheel to avoid accidents caused by the grinding wheel broken and injured.

  Precautions:

　　1. The problem of side grinding

In the daily use of grinders, we can often find that some operators, regardless of the type of grinder or the type of grinding wheel, use the side of the grinding wheel to grind at will. This is a serious violation of the safety operation regulations. behavior. According to the regulations, the grinding wheel with the circumferential surface as the working surface is not suitable for side grinding. The radial strength of this kind of grinding wheel is relatively large, and the axial strength is small. This kind of behavior should be prohibited during the use of.

　　2, the problem of positive operation

　　In daily use, many operators are always accustomed to operating directly on the grinding wheel. The reason is that the force can be used in this direction. In fact, this behavior is a behavior that should be particularly prohibited in the operation of the grinder. According to the operating rules, when using a grinder to grind a workpiece, the operator should stand on the side of the grinding wheel and not operate on the front of the grinding wheel, so as to avoid the grinding wheel flying out or the grinding wheel breaking out and hurting people when the grinding wheel fails.

　　 3. The problem of hard operation

　　 When using the grinder, some operators, especially young operators, use too much force to achieve a fast grinding speed. This is an extremely unsafe operation behavior. The flat body of any grinding wheel has a certain strength. Doing so is likely to cause the grinding wheel to break, or even fly out and injure people. This is also a prohibited behavior.

　　4. The problem of joint operation

　　In the actual daily operation, there are also such situations. Someone rushes production tasks and grabs working time. Two people share a grinder to operate at the same time. This is a serious illegal operation and should be strictly prohibited. When a grinder is not enough, it can be solved by adding a grinder, and it is never allowed to share a grinder at the same time.