Grinding Wheel Use Precautions
A circular consolidated abrasive tool with a central through hole was made by using abrasive binder. The abrasive wheel has the largest amount and the most widely used surface. It rotates at high speed when used, and can be used for rough grinding, semi-fine grinding and grooving cutting of various shapes of metal or non-metal workpieces such as outer circle, inner circle and plane. There are many kinds of grinding wheels. According to the abrasive used can be divided into ordinary abrasive (corundum silicon carbide, etc.) grinding wheel superhard abrasive (diamond cubic boron nitride, etc.) grinding wheel; According to the shape can be divided into flat grinding wheel, bevelled grinding wheel, cylindrical grinding wheel, cup grinding wheel, disc grinding wheel, etc. According to the bond can be divided into ceramic grinding wheel, resin grinding wheel, rubber grinding wheel, metal grinding wheel and so on. Grinding wheel characteristic parameters are abrasive, viscosity, hardness, bond, shape, size and so on. Since the grinding wheel usually works at high speed, the rotary test (to ensure that the grinding wheel will not break at the highest working speed) should be carried out before use (to prevent the vibration of the machine tool during work). After working for a period of time, the grinding wheel should be trimmed to restore the grinding performance of the correct geometry.
Grinding wheel use has a certain risk. For your safety, the following is a list of precautions:
One of the most commonly used machines in grinder machinery factories. Whether it is installed reasonably and meets safety requirements; Whether it is used correctly and conforms to safe operation procedures. These problems are directly related to the personal safety of every employee, so the actual use must cause us to pay enough attention.
1 Precautions during use
In the daily use of grinder, we can often find that there are operators regardless of the type of grinder, regardless of the type of grinding wheel
Class, arbitrarily use the side of the grinding wheel for grinding, which seriously violates the safety operation rules and regulations. According to the rules with the circular surface of the working surface grinding wheel should not use the side for grinding, the radial strength of this grinding wheel is large, the axial strength is small, the operator will cause the grinding wheel to break, and even hurt people, the actual use process should prohibit this behavior.
In daily use, many operators are always used to operating against the grinding wheel, because this direction can be used to work hard, in fact, this behavior of grinder operation should be especially prohibited. According to the operating rules, when using the grinder to grind the workpiece, the operator should stand on the side of the grinding wheel, and should not operate on the front of the grinding wheel, so as to avoid the grinding wheel flying out or the grinding wheel breaking and flying out.
When the grinder is used, some operators, especially young operators, exert too much force in order to achieve fast grinding speed, which is a very unsafe operation behavior. Any grinding wheel flat has a certain strength, so it is likely to cause the grinding wheel to break, and even fly out to hurt people, which should also be prohibited.
Common operation of the actual daily operation, there are also such a situation, some people to catch up with production tasks, rob the working time, two people share a grinder at the same time operation, this is a serious violation of the operation behavior, should be strictly prohibited. When a grinder is not enough, it can be solved by adding a grinder, and it is absolutely not allowed to share a grinder at the same time.
2 Precautions During the replacement process
Any grinding wheel has its certain wear requirements, and the wear situation must be replaced with a new grinding wheel to a certain extent. Not in order to save materials, it is required to use super wear, which is a very unsafe violation. In general, when the grinding wheel is worn to a diameter 10mm larger than the chuck diameter, a new grinding wheel should be replaced.
From the warehouse to bring a new grinding wheel may not be qualified grinding wheel, even from the manufacturer to buy a new grinding wheel may not be qualified grinding wheel. Any grinding wheel has its certain effective period, the effective period of use, it qualified grinding wheel; Beyond the expiration date, it is not necessarily qualified grinding wheel. The regulations stipulate that "the grinding wheel should be used within the validity period, and the resin rubber bond grinding wheel must be tested after storage for one year, and the qualified person can use it." During the use of texture problems, if the grinding wheel is found to have local cracks, it should be stopped immediately and replaced with a new grinding wheel to avoid crushing and wounding accidents.
3 Other precautions
Generally, a special grinding wheel room should be set up for the grinder, and flammable and explosive materials are strictly prohibited near the grinding wheel room or the grinder, so as to avoid fire or explosion accidents, and other parts should not be placed in the vicinity of the grinder.
The grinder should be responsible for the special person, who is not the staff of the unit to grind objects on the grinder, need to obtain the permission of the full-time person in charge, and strictly abide by the safety operation procedures, it is strictly forbidden to use the grinder without the consent of the person in charge. In addition, the replacement of the grinding wheel should also be responsible for the special person, and it is prohibited to replace and install the grinding wheel without permission.
After the operator stops working, the vehicle should be turned off immediately. It is prohibited to idle the grinder when no one is in use or under management. In addition, the short-wave turbine should be kept clean after use.
