Electric angle grinders are gradually popularized because of their powerful functions, integrating cutting, grinding, and grinding functions. However, the safety hazard of angle grinders is also the biggest among all electric tools. When purchasing an angle grinder, you should pay attention to safety protection. All protection should be done strictly according to the requirements when working.
Working principle of electric angle grinder
The electric angle grinder uses a high-speed rotating sheet grinding wheel, rubber grinding wheel, wire wheel, etc. to grind, cut, derust, and polish metal components. Angle grinders are suitable for cutting, grinding and brushing metal and stone, do not use water during operation.
Angle grinder operation specification
1. Wear protective goggles.
2. After turning on the switch, wait for the grinding wheel to rotate stably before working.
3. Employees with long hair must tie up their hair first.
4. The cutting direction cannot face people.
5. Stop for fifteen minutes after working continuously for half an hour.
6. Do not grasp small parts by hand to process the angle grinder.
7. Consciously clean the working environment after the work is completed.
What are the advantages of brushless angle grinder
The traditional angle grinder is also called a brushed angle grinder, but because the carbon brush replacement is very troublesome, there is a brushless angle grinder. The difference between brushed and brushless angle grinders is as follows: Torque: The brushless motor itself has magnetic force, and the magnetic force is greater after power on. In terms of torque, the brushless angle grinder is larger than the brushed angle grinder. Efficiency: When the no-load speed is similar, the speed drop of the brushless angle grinder is smaller than that of the brushed angle grinder, and the efficiency is higher. Consumables saving: The brushless angle grinder does not need to use carbon brush consumables, and saves the power consumption and frictional resistance caused by the friction between carbon brushes and copper heads, which can save consumables and reduce production costs.
How to install the angle grinder blade
Take out the angle grinder, prepare to install the angle grinder block, and tighten the fixing nut of the angle grinder with a Phillips screwdriver. After tightening, the cutting piece can be installed. When installing the cutting piece, first place the cutting piece on the angle grinder, then use the fixing nut to stabilize the cutting piece, and then tighten the nut with a wrench. Make sure that the handle on the side of the angle grinder can be installed after the nut is tightened. It should be noted that the installation sequence of the angle grinder cannot be reversed, and the fixing nut must be tightened during this process.
How much power does an angle grinder need?
1. Ordinary grinding requires that the angle grinder must be light and handy, flexible and comfortable to operate, but not too demanding on the strength of the machine. Then, a small angle grinder below 600w is suitable for this type, so as to avoid the waste caused by this, and the angle grinder If the machine is too large, it will be inconvenient for family use.
2. When using an electric angle grinder for heavy work such as metal cutting and stone carving and cutting for a long time, and the press machine will be more forceful during use, it is recommended to choose an angle grinder of 800w or more, because this type of machine has high power and strength. Strong, less prone to overload burn-in.
How to choose the power of the angle grinder?
Generally, it is around 600W-700W. 800W is already a very large power. The power of a professional industrial-grade angle grinder is even above 2000W. It is not low, it is not suitable for long-term work, and it will have an impact on human health.
For general grinding and polishing of stone or metal materials, it is recommended to choose an angle grinder below 600W; if it is cutting welds or grinding rough metal surfaces with force, it is recommended to choose an angle grinder of about 700W; if it is for a long time and continuously For heavy-duty operations such as metal cutting and stone carving and cutting, it is recommended to choose an angle grinder of 800W or above, which is more professional.
Do not install woodworking saw blades on angle grinders.
The main function of an angle grinder is grinding, not cutting. The working mechanism of the angle grinder is to use the grinding wheel to run at high speed, so that the abrasive grains of the grinding wheel and the plane of the material to be ground are ground. When used, the plane is in contact with the plane, and the reaction force on the angle grinder is parallel. When the saw blade "cuts" the immovable material, the high-speed rotating machine is suddenly stuck, and the force immediately reacts to the machine. The most likely situation is that the machine is bounced off, or the saw blade breaks and flies out, which is likely to cause accidents .