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Rail transit has become a very important market for China's machine tool industry. According to the division of products and business, the demand for machine tools in the rail transit industry can be roughly divided into the following four levels: one is track processing and high-speed railway road sleeper processing; the second is the manufacture of locomotives and vehicles; the third is wheels and vehicles. The manufacture of components; the fourth is the routine maintenance and repair of the operation. These processing and manufacturing are urgently needed for general-purpose CNC gold-cutting machine tools such as machining centers, CNC vertical lathes, etc., as well as special CNC gold-cutting machine tools, such as track-plate grinding machines, rail-grinding machines, etc.; and forming machines such as presses and bending machines are also needed. Taking locomotive and vehicle manufacturing as an example, the two major groups of CSR and CNR, which belong to the Ministry of Railways, only used machine tools for purchase in 2009, amounting to 5 billion yuan. If the other three needs are taken into account, the amount of machine tool purchases per year will reach 7 billion yuan by 2012. According to the specific analysis, in the track processing and high-speed railway sleeper processing, the construction and transformation of speed-increasing and high-speed rails require new speed-increasing ballasts, and the demand for CNC ball-web milling machines and ball-turn grinders is increasing. High-speed rails are laid on rail boards that are completely different from sleepers. Special CNC track-plate grinders are required, and a set is required every 100km. In terms of the manufacture of vehicle parts, the demand for machine tools for power parts, electric locomotives and electric drive diesel locomotives is also different. The focus of electric locomotive machining is on the stator, rotor and motor shaft of the motor, while the focus of the electric drive locomotive is diesel engine, generator and transmission parts. In the body part, the body of different rolling stock is basically a steel frame beam structure, which requires partial surface and hole processing. In general, these processes are in the scope of general mechanical manufacturing and diesel engine manufacturing, and there are many demand for general-purpose machine tools and special machine tools, such as large vertical machining centers, gantry machining centers, CNC boring and milling machines, CNC vertical lathes, CNC precision grinding machines, and Crankshaft car, etc. In the field of daily maintenance services of railways, one of the main tasks is to ensure the integrity of the wheels and axles, timely repair and replacement of worn wheels and bearings, and repair the axles when the bearings are replaced. Therefore, this piece is an essential equipment for CNC wheel lathes, CNC non-falling wheel lathes and cylindrical grinders. At the same time, with the reform of the railway sector and the running of the train across the directors, the maintenance workload will increase substantially. The maintenance and repair work will be more and more concentrated in the locomotive section and the depot of the hub area, including the gantry wheel lathe. Ultrasonic flaw detection and wear measurement and automatic restoration of the prototype's minimum cutting volume will be the future direction. In addition, with the development of China's railway construction, the degree of automation in line maintenance will be higher and higher, and the demand for road maintenance machinery will continue to increase. It is understood that by 2012, 1,000 large-scale road maintenance machines will be added. This is another growth point worthy of attention in the machine tool industry.
These products are mainly used for pigments industry. Such as: Bon acid, it is Light yellow powder. Melting range 217-223°C. Easily soluble in alcohol, ether. Soluble in benzene, alkali solution. Slightly soluble in water and applied in producing colour Naphthol as and other kinds intermediates of colour naphthol. Moreover, it is intermediates of medicine and organic pigment. Other Naphthol series, like AS, AS-D are mainly used for Organic Pigments.
Pigment Intermediate,Agrochemical Intermediates,Dyestuff Intermediate,Beta Naphthol
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