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Selection guide and precautions for use of angle grinder
2022-10-13
Many people are asking which angle grinder is good. I suggest that he must buy a big brand and don't be greedy for cheap. Of course, in addition to the brand factor, there are also some buying skills. Now I will tell you in summary.Power selection of angle grinder:Everyone should know that the greater the power of the angle grinder, the better, because the greater the power, the greater the torque, and the greater the risk during the entire operation. According to `Angle Grinder` (GB/T 7442) -2007) stipulates that the power of the angle grinder is related to the diameter of the grinding wheel. In the previous product standards, type A represents the ordinary type and type B represents the heavy type. Now many manufacturers do not mark the A/B type. Considering that everyone usually uses
Power selection of angle grinder:
Everyone should know that the greater the power of the angle grinder, the better, because the greater the power, the greater the torque, and the greater the risk during the entire operation. According to "Angle Grinder" (GB/T 7442) -2007) stipulates that the power of the angle grinder is related to the diameter of the grinding wheel. In the previous product standards, type A represents the ordinary type and type B represents the heavy type. Now many manufacturers do not mark the A/B type. Considering that everyone usually uses angle grinders for household use, it is recommended to choose an angle grinder below 600w. Below 600W: General grinding and polishing of stone or metal surfaces. 700W: Cut and sharpen welds and sharpen rough metal surfaces vigorously. 800W and above: For heavy industrial purposes such as cutting metal, stone carving and cutting.
Motor of angle grinder:
The excellent angle grinder uses a pure copper wire motor, which has strong power and runs smoothly at 11000 rpm. As for brushless or brushed, it depends on the actual needs of my own use. I personally prefer brushless The motor does not require frequent replacement of carbon brushes. If you are using a carbon brush motor, check the remaining amount of carbon brush before operation. Generally, the carbon brush should be replaced in time when the remaining 7-8mm, otherwise the rotor may be worn.
The handle of a good angle grinder adopts a slender design style, which has an excellent feel. It can be grasped for a long time when grinding. The material of the key parts of the whole machine feels thick.
Details of angle grinder:
In addition to meeting the above functional parameters, an excellent angle grinder also fully considers the user's usage habits in terms of safety and portability. The following details can be referred to when purchasing:
1. Axle: If you feel the angle grinder vibrates or rotates in the shape of a figure eight while using the angle grinder, it means that the axis has been bent. Try to avoid buying
2. Lithium battery: The current angle grinder has already entered the wireless era. When choosing a lithium battery, remember to buy genuine brands of big brands. Its workmanship and durability are very reliable.
3. Protective cover: The angle grinder will produce sparks when it is working. The thickened protective cover can prevent sparks from splashing and reduce the occurrence of safety accidents.
Note for angle grinders:
1. First, check whether the accessories are in good condition, and confirm that the insulated cables are not damaged or aging. Only then can the power be plugged in for work.
2. When we are cutting and grinding, except for the operators, there should be no people within one meter, and no explosive materials, and do not operate in the direction of people to avoid injury to the personnel.
3. When the grinding wheel is exhausted and needs to be replaced, the power supply must be cut off to prevent accidental operation by pressing the switch and causing personnel accidents.
4. When the angle grinder is used, it must be equipped with a firm and suitable grinding wheel cover. The distance between the bracket and the grinding wheel should not exceed 5mm. Ensure that there is no debris between the angle grinder and the protective cover. Confirm that there is no problem before using it, and then start the angle grinder .
5. The operator must wear protective goggles when working, and the standing position should be on the side instead of facing the grinding wheel. Before grinding, check the integrity of the grinding wheel without cracks, cracks or injuries, and make sure that the grinding wheel shaft is installed firmly.
6. When cutting and polishing dangerous and flammable items, preventive measures must be taken and two or more fire extinguishers must be equipped. Observe the principle of safety first.
7. After using the angle grinder for 30 minutes, you should rest for more than 20 minutes to prevent the excessive temperature of the machine caused by long-term use, which may damage the equipment and the grinding object. After the grinding wheel and the machine have cooled down, proceed to work.
Power selection of angle grinder:
Everyone should know that the greater the power of the angle grinder, the better, because the greater the power, the greater the torque, and the greater the risk during the entire operation. According to "Angle Grinder" (GB/T 7442) -2007) stipulates that the power of the angle grinder is related to the diameter of the grinding wheel. In the previous product standards, type A represents the ordinary type and type B represents the heavy type. Now many manufacturers do not mark the A/B type. Considering that everyone usually uses angle grinders for household use, it is recommended to choose an angle grinder below 600w. Below 600W: General grinding and polishing of stone or metal surfaces. 700W: Cut and sharpen welds and sharpen rough metal surfaces vigorously. 800W and above: For heavy industrial purposes such as cutting metal, stone carving and cutting.
Motor of angle grinder:
The excellent angle grinder uses a pure copper wire motor, which has strong power and runs smoothly at 11000 rpm. As for brushless or brushed, it depends on the actual needs of my own use. I personally prefer brushless The motor does not require frequent replacement of carbon brushes. If you are using a carbon brush motor, check the remaining amount of carbon brush before operation. Generally, the carbon brush should be replaced in time when the remaining 7-8mm, otherwise the rotor may be worn.
Heat dissipation of angle grinder:
The angle grinder will get hot and hot when it is working. When the angle grinder generates a lot of heat, it is recommended to stop and rest for a while, and do not overload it for a long time. If it is a newly bought angle grinder, tell everyone to judge the heat dissipation of the machine. Capability trick: Let the machine idling for a few minutes first, at a distance of about one centimeter from the nose, and see if the wind blows out from time to time. If it is hot, it means that the heat dissipation is poor.
The handle of a good angle grinder adopts a slender design style, which has an excellent feel. It can be grasped for a long time when grinding. The material of the key parts of the whole machine feels thick.
Details of angle grinder:
In addition to meeting the above functional parameters, an excellent angle grinder also fully considers the user's usage habits in terms of safety and portability. The following details can be referred to when purchasing:
1. Axle: If you feel the angle grinder vibrates or rotates in the shape of a figure eight while using the angle grinder, it means that the axis has been bent. Try to avoid buying
2. Lithium battery: The current angle grinder has already entered the wireless era. When choosing a lithium battery, remember to buy genuine brands of big brands. Its workmanship and durability are very reliable.
3. Protective cover: The angle grinder will produce sparks when it is working. The thickened protective cover can prevent sparks from splashing and reduce the occurrence of safety accidents.
Note for angle grinders:
1. First, check whether the accessories are in good condition, and confirm that the insulated cables are not damaged or aging. Only then can the power be plugged in for work.
2. When we are cutting and grinding, except for the operators, there should be no people within one meter, and no explosive materials, and do not operate in the direction of people to avoid injury to the personnel.
3. When the grinding wheel is exhausted and needs to be replaced, the power supply must be cut off to prevent accidental operation by pressing the switch and causing personnel accidents.
4. When the angle grinder is used, it must be equipped with a firm and suitable grinding wheel cover. The distance between the bracket and the grinding wheel should not exceed 5mm. Ensure that there is no debris between the angle grinder and the protective cover. Confirm that there is no problem before using it, and then start the angle grinder .
5. The operator must wear protective goggles when working, and the standing position should be on the side instead of facing the grinding wheel. Before grinding, check the integrity of the grinding wheel without cracks, cracks or injuries, and make sure that the grinding wheel shaft is installed firmly.
6. When cutting and polishing dangerous and flammable items, preventive measures must be taken and two or more fire extinguishers must be equipped. Observe the principle of safety first.
7. After using the angle grinder for 30 minutes, you should rest for more than 20 minutes to prevent the excessive temperature of the machine caused by long-term use, which may damage the equipment and the grinding object. After the grinding wheel and the machine have cooled down, proceed to work.
8. The angle grinder should be inspected and repaired regularly to ensure that the equipment is in good condition to reduce the occurrence of accidents in the future.
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