How to choose an electric drill
Source: ZHEJIANG DONGLI ELECTRIC APPLIANCE CO.,LTDPublication time：2017-11-21
Electric drill products are suitable for drilling on steel, wood and plastic. It is one of the most popular tools used in hand held electric tools. General hardware stores to large professional stores, small roadside hardware stores, have electric drill sales, in order to purchase a desirable electric drill, the general should pay attention to the following points.
A drill, products are recognized the mandatory product certification Commission regulations, so at the time of purchase, should first check the tools whether the 3C mark, the general method for inspection, whether in packaging tools or tools of the nameplate on the 3C logo, if this is still in doubt (as an electric drill manufacturers did not pass the annual review supervision, CNCA will suspend or revoke the certificate), available on the CNCA website, access to the tools of the 3C certificate is valid.
Two, general purchase electric drill, should choose good reputation, more influential large companies, because these big companies have strong technical strength, quality control is more strict, after-sales service is also more standardized. Users with strong purchasing power can also purchase tools of some international brands.
Three, according to the needs of users, the first difference between home or professional use, since most of the drills are designed for professionals, so before the purchase, should be the first distinction between professional and general household tools. Usually the professional and general household tools in different power, large power tools for professional use, to facilitate professionals to reduce the workload, the general household tools because the project is small, the workload is relatively small, so the input power tools need not be huge.
Four. Observe the external packing of the electric drill. The outer packing of the tool should be clear and without breakage. The plastic box is firm and the buckle of the plastic box should be firm and durable.
Five, observe the drill appearance, the appearance of the tool should be uniform color, no obvious effect of plastic wire surface and dent, no scratch or bump traces, assembling dislocation between parts of 0.5mm shell, aluminum casting coating is smooth and beautiful without defects, the surface shall be free from dirt and stains. When holding the hand, the feeling is better, the handle of the switch should be smooth. The length of the cable should be no less than 2 meters.
Six, check the electric drill nameplate and instructions, the nameplate parameters of the tool should be consistent with the 3C certificate. The detailed address and contact information of the manufacturer and the manufacturer should be included in the instruction. Nameplate or certificate should be traceable to batch numbers.
Seven, hand holding electric drill, switch on the power supply, use the hand to operate the switch frequently, make the tool start frequently, observe the switch function of the tool switch is reliable. At the same time to observe the scene of the TV, fluorescent lamps are abnormal phenomenon. To confirm whether the tool is equipped with an effective radio interference suppressor.
Eight, electric powered one minute, running with the hand grip, the hand should be no obvious feeling any abnormal fibrillation, observe the commutation spark, the commutation spark should not exceed the general level, into the air from the tool inside, there should be no obvious arc on the surface of the commutator. There should be no normal noise at the time of operation.