In 1895, German overtone produced the world's first direct current drill. The shell is made of cast iron and can drill 4 mm holes in the steel plate. Then three-phase power frequency (50Hz) electric drill appeared, but the motor speed failed to exceed 3000r/min. In 1914, an electric tool driven by a single-phase series-excitation motor was developed. The speed of the motor was over 10,000 r/min. In 1927, a medium-frequency electric tool with power supply frequency of 150-200 Hz appeared. It has the advantages of high speed of single-phase series motor and simple and reliable structure of three-phase power-frequency motor. However, its use is limited because of the need for medium-frequency current to supply power.
Electric tool is a mechanized tool which is driven by motor or electromagnet and drives the working head through transmission mechanism. According to the National Economic Industry Classification (GB/T4754-2011), the company's industry belongs to the sub-category of "General Equipment Manufacturing" "Manufacturing of Wind and Electric Tools" (code C3465). Electric tools are mainly divided into metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools. Common electric tools include electric drill, electric grinding wheel, belt grinder, electric wrench, electric screwdriver, electric hammer, concrete vibrator, electric planer, angle grinder, saw, polisher, angle grinder, blower, polisher, sander and so on.
The upstream industry of power tools is the supplier of raw materials (such as silicon steel sheet, enameled copper wire, aluminium parts, plastics, etc.). The industry is sensitive to the price changes of the above raw materials. The applications of electric tools cover construction roads, decoration, wood processing, metal processing and other manufacturing industries. Influenced by the national policy of stimulating domestic demand and increasing investment in infrastructure, the future development prospects of construction roads and metal processing industry are promising, thus driving the increase of demand for electric tools industry.
In 2016, the total output value of China's electric tool industry was 48.247 billion yuan, up 3.14% from the same period last year. In 2017, the total output value of China's electric tool industry reached 49.989 billion yuan, up 3.61% from the same period last year. Relatively speaking, the growth rate of output value of electric tools is relatively slow. In 2016, the sales of China's electric tools industry reached 239.69.94 million units, an increase of 3.29% over the same period last year. In 2017, the total sales reached 246.3047 million units, an increase of 2.76% over the same period last year. Since more electric tools are exported in China, the following sales data include the quantity sold abroad.
China's electric tool industry presents the following characteristics and development trends: (1) the industry growth rate is stable. (2) There is a gap in technological level, and the production capacity of key components is low. (3) The profit margin is reduced. (4) Lack of brand. In view of the current situation and problems of these industries, China's electric tool enterprises need to focus on the following aspects: 1) to strengthen brand awareness, enhance international competitiveness, and obtain due profits; 2) to continuously improve product quality and added value, and develop new products; 3) at the same time, actively explore emerging markets in Africa, Latin America and other countries to achieve. Market diversification. The domestic electric tools market is more critical of the quality and brand of electric tools. Therefore, the market inclination to good quality and brand electric tools increases.