Precautions for purchasing electric tools: first of all, electric tools are hand-held or movable mechanical tools driven by motor or electromagnet and working head through transmission mechanism. Electric tools have the characteristics of easy to carry, simple operation and various functions, which can greatly reduce labor intensity, improve work efficiency and realize manual operation mechanization. Therefore, they are widely used in construction, housing decoration, automobile, machinery, electric power, bridge, gardening and other fields, and a large number of them enter families.
Electric tools are characterized by light structure, small volume, light weight, small 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; it is more efficient than pneumatic tools, low cost and easy to control.
Options:
1. According to the need to distinguish between home or professional use, most of the power tools are designed for professionals, and professional and general home tools should be distinguished when purchasing. Generally, the difference between professional tools and household tools is in power. Professional tools are more powerful, so as to facilitate professionals to reduce the workload. Because of the small project and relatively small workload of household tools, the input power of tools does not need to be very large.
2. The outer packing of the tool shall have clear pattern and no damage, the plastic box shall be firm, and the buckle for opening the plastic box shall be firm and durable.
3. The appearance of the tool shall be uniform in color, the surface of the plastic parts shall be free of obvious shadow, dent, scratch or collision mark, the assembly dislocation between the shell parts shall be ≤ 0.5mm, the coating of the aluminum casting shall be smooth and beautiful without defect, and the surface of the whole machine shall be free of oil stain. When holding by hand, the handle of the switch should be flat. The length of cable should not be less than 2m.
4. The name plate parameters of tools shall be consistent with those on CCC certificate. The detailed address and contact information of the manufacturer and manufacturer shall be provided in the instruction manual. Traceable batch number shall be provided on the nameplate or certificate.
5. Hold the tool by hand, turn on the power, operate the switch frequently to start the tool frequently, and observe whether the on-off function of the tool switch is reliable. At the same time, observe whether there are abnormal phenomena in the TV set and fluorescent lamp. In order to confirm whether the tool is equipped with an effective radio interference suppressor.
6. When the tool is electrified and runs for one minute, hold it by hand. The hand should not feel any abnormal vibration. Observe the commutation spark. The commutation spark should not exceed 3 / 2 level. Generally, when you look in from the air inlet of the tool, there should be no obvious arc light on the surface of the commutator. During operation, there should be no abnormal noise