An electric tool is a hand-held or movable mechanized tool powered by a motor or an electromagnet and driving a working head through a transmission mechanism. Power tools are convenient to carry, simple to operate, and versatile. They can greatly reduce labor intensity, improve work efficiency, and realize manual mechanization. Therefore, they are widely used in construction, housing decoration, automobiles, machinery, electricity, bridges, gardening, etc And entered the home in large numbers.

The power tools are characterized by light structure, small size, light weight, low vibration, low noise, flexible operation, easy control and operation, easy to carry and use, strong and durable. Compared with manual tools, it can improve labor productivity several times to dozens of times; higher efficiency, lower cost and easier control than pneumatic tools.

Pay attention to the following points when purchasing power tools.

1. Differentiate between home use and professional use according to the needs. Most power tools are designed for professionals. When buying, you should distinguish between professional and general household tools. The difference between professional and general household tools is in power. Professional tools have higher power to facilitate professionals to reduce the workload. Due to the small engineering and general workload of household tools, the input of tools is relatively small. The power does not need to be great either.

2. The outer packaging of the tool should have a clear pattern and no damage, the plastic box should be strong, and the buckle that opens the plastic box should be strong and durable.

3. The appearance of the tool should be uniform, the surface of the plastic parts should not have obvious shadows and dents, there should be no scratches or bumps, the assembly misalignment between the shell parts ≤ 0.5mm, the aluminum casting coating is smooth and beautiful without defects, The surface should be free of oil and stains. When holding it by hand, the handle of the switch should be flat. The length of the cable should generally not be less than 2 meters.

4. The nameplate parameters of the tool should be the same as those on the CCC certificate. The address and contact details of the manufacturer and production plant should be included in the instructions. The traceable lot number of the product shall be on the nameplate or certificate of conformity.

5. Hold the tool with your hand, turn on the power, and frequently operate the switch to make the tool start frequently. Observe whether the on-off function of the tool switch is reliable. At the same time, observe whether there is any abnormal phenomenon on the TV and fluorescent lamps on the scene. In order to confirm that the tool is equipped with an effective radio interference suppressor.

6. Power on the tool for one minute. Hold it with your hand during operation. The hand should not notice any abnormal vibration. Observe the reversing spark. The reversing spark should not exceed 3/2 level, generally from the inlet of the tool Looking everywhere, there should be no obvious arc on the surface of the commutator. During operation, there should be no abnormal noise.