[The role of adjustable wrench] Electric drill model electric drill-selection

Electric drill products are suitable for drilling holes in steel, wood and plastic, and are one of the most popular tools used in handheld power tools. General hardware stores range from professional hypermarkets to small roadside hardware stores, and electric drills are sold. In order to buy a satisfactory electric drill, you should generally pay attention to the following points.

1. Electric drill products are compulsory certification products stipulated by the National Accreditation Administration. Therefore, when purchasing, you should first check whether the tool has the 3C mark. The method of checking is generally whether it is on the tool's outer packaging or the tool's nameplate. There is a 3C mark, if there is still doubt about this (because the manufacturer of the electric drill has not passed the annual supervision review, the CNCA suspended or revoked its certificate), you can go to the website of the CNCA to check whether the 3C certificate of the tool Currently valid.

Second, when purchasing electric drills, you should choose large companies with good reputation and influence, because these large companies have strong technical force, strict quality control, and more standardized after-sales service. Users with strong purchasing power can also purchase some international brand tools.

Third, according to the needs of users, first distinguish between household and professional use. Since most electric drills are designed for professionals, before purchasing, you should first distinguish between professional and general household tools. Generally, the difference between professional and general household tools is in power. Professional tools have a larger power to facilitate professionals to reduce the workload. The tools for general household use are relatively small and the workload is relatively small, so the input of tools Power does not need to be very large.

4. Observe the outer packaging of the electric drill. The outer packaging of the tool should have a clear pattern and no damage. The plastic box should be strong. The buckle for opening the plastic box should be firm and durable.

5. Observe the appearance of the electric drill. The appearance of the tool should be uniform. There should be no obvious shadows and dents on the surface of the plastic parts. There should be no scratches or bumps. The assembly dislocation between the shell parts is ≤0.5mm. The aluminum casting paint is smooth and beautiful. No defects, the surface of the whole machine should be free of oil stains and stains. When you hold it with your hands, you feel better about yourself, and the handle of the switch should be flat. The length of the cable should generally not be less than 2 meters.

6. Check the nameplate and instruction manual of the electric drill. The nameplate parameters of the tool should be consistent with those on the 3C certificate. The manufacturer's and manufacturer's detailed address and contact information should be on the instruction manual. The traceable batch number of the product shall be on the nameplate or certificate of conformity.

7. Hold the electric drill by hand, turn on the power, and frequently operate the switch by hand to make the tool start frequently, and observe whether the on-off function of the tool switch is reliable. At the same time, observe whether there are any abnormal phenomena on the TV set and fluorescent lamp on site. In order to confirm whether the tool is equipped with an effective radio interference suppressor.

8. The electric drill is operated for one minute after being powered on. It should be held by hand during operation. The hand should not notice any abnormal vibration. Observe the reversing spark. The reversing spark should not exceed the level, generally from the air inlet of the tool. Look, there should be no obvious arc on the surface of the commutator. During operation, there should be no abnormal noise.