Angle grinder (hand grinding wheel) is very popular in many families and is an economical primary transformation tool. Angle grinder, commonly known as hand grinding wheel, is an electric grinding tool, which is suitable for cutting, grinding and scrubbing metal and stone, and water is not allowed during operation. Guide plates must be used when cutting stone. For models equipped with electronic control devices, grinding and polishing operations can also be carried out if appropriate accessories are installed on such machines. Of course, the angle grinder is also an absolutely violent tool. The rotation speed of the angle grinder is very high, often reaching tens of thousands of revolutions. If used improperly, it is easy to be dangerous! Therefore, how to use the angle grinder correctly has attracted the attention of woodworking enthusiasts. The following are the steps and precautions for correctly using angle grinder in Wanguan Hardware & Electric Network Finishing.

The labor protection articles required to use the angle grinder are:

1, protective gloves, can prevent hands from being injured by sparks generated by grinding, and reduce the injury consequences caused by contact with the rotating grinding wheel.

2, protective glasses, to avoid sparks flying eyes.

3, safety helmet, protect the head.

4, labor insurance shoes, anti-smashing, anti-slip.

5. Work clothes.

6. Dust masks (if necessary), such as cleaning rust, polishing, cutting cement, asbestos and other materials and easy-to-get dust with wire brushes.

First, the preparation work before using the angle grinder

1, Angle grinder should have someone who's in charge, check it regularly to ensure normal operation.

2. When replacing a new grinding wheel, please cut off the main power supply. At the same time, check whether there is any crack on the grinding wheel before installation. If it is not easy to distinguish with the naked eye, lift the grinding wheel with solid wire, and then tap it gently with a piece of wood to listen to its sound. Metal sound is up, dumb sound is down.

3. The angle grinder must have a firm and suitable grinding wheel cover, and the bracket shall not exceed 5mm from the grinding wheel, otherwise it shall not be used.

4. When installing the grinding wheel, the nut should not be too loose or too tight. Check whether the nut is loose before use.

5. After the grinding wheel is installed, it must idle for 2 ~ 3 minutes to see whether its operation is balanced and whether the protection device is appropriate and reliable. During the trial operation, two workers should be arranged, one of whom stands on the side of the grinding wheel to start the grinding wheel. If there is any abnormality, the other party will immediately cut off the power supply at the power distribution cabinet. In case of accidents.

6. All users should wear protective glasses, not facing the grinding wheel, but standing on the side. When using the angle grinder, gloves are not allowed, and it is forbidden to use cotton yarn to wrap the cutter for polishing.

7. Before use, check whether the grinding wheel is in good condition (there should be no cracks, cracks or disabilities) and whether the grinding wheel shaft is firmly and reliably installed. Whether there is sundries between the angle grinder and the protective cover and whether it meets the safety requirements, and then start the angle grinder after confirming that there is no problem.

Second, the matters needing attention in the process of using angle grinder

1, when starting the grinding wheel, it must be 40 ~ 60 seconds before grinding. When grinding tools, you should stand on the side of the grinding wheel, not facing the grinding wheel, in case the grinding wheel flies out and hurts people.

2. On the same grinding wheel, it is forbidden for two people to use it at the same time, and grinding on the side of the grinding wheel is not allowed. When grinding, the operator should stand on the side of the angle grinder instead of in front of the grinder to prevent the grinding wheel from cracking and accidents. At the same time, gloves are not allowed to operate. It is forbidden to laugh and play around the pile when polishing.

3. When grinding, the standing position should be at a certain angle with the angle grinder, and the contact pressure should be uniform. It is forbidden to hit the grinding wheel to avoid fragmentation. Grinding wheels are limited to grinding tools, heavy materials or thin iron plates, soft materials (aluminum, copper, etc. ) and wood products.

4, grinding, the operator should stand on the side of the grinding wheel or oblique position, don't stand on the front of the grinding wheel, at the same time, the tool should be slightly higher than the center of the grinding wheel. Don't push too hard, lest you slip and hurt your hand.

5, grinding wheel is not allowed to touch water, always keep dry, in case of water loss of balance, an accident.

6. It is not allowed to grind large and long objects on the angle grinder to prevent the crushed grinding wheel from flying out and hurting people.

7. Don't grind the workpiece with one hand to avoid the workpiece falling off and breaking the grinding wheel in the protective cover.

Three. Matters needing attention after using angle grinder

1. The grinding surface of grinding wheel must be trimmed frequently. When it is found that the tool jumps seriously, it should be trimmed with a diamond pen in time.

2, grinding wheel grinding thin, small, serious wear, are not allowed to be used, should be replaced in time to ensure safety.

3, after grinding, should turn off the power supply, don't let the angle grinder idling, at the same time, should always remove the dust in the protective cover, and regularly repair and replace the spindle grease.