The future development of valve manufacturing in China
It is understood that the next 10 years, thermal power, nuclear power, hydropower, large petrochemical, oil and gas gathering pipelines, coal liquefaction and metallurgical construction of major projects such as new product of form a complete set of valve, will become the development emphasis, is expected to lead the rapid growth of the whole valve market. To this end, the valve industry should form an enterprise group, increase the investment in science and technology, develop high, large, fine, pointed valve products; We should strengthen standardization of products, so that the standard can keep up with the development of the situation in quantity and level.
According to the experts of the association, when developing these valve products, the application of new process technology should be paid attention to, such as the overall welding technology should be adopted for the large-diameter ball valve of the long transmission pipeline. In order to improve the valve sealing surface corrosion resistance and erosion resistance, and a few manufacturers have begun to use supersonic flame spraying tungsten carbide process, at the same time should pay attention to using nanoscale materials of sealing surface coating modification, and the development of the laser cladding process technology.
In addition, the automatic stacking process of cobalt chromium tungsten plasma wire feed, which has been applied in the valve industry for years, should continue to be promoted to replace manual welding to ensure the quality of the sealing surface of the valve. In order to realize the automatic control of engineering process flow, the valve development of intelligent electric and hydraulic transmission devices should be strengthened. To speed up the development of new methods such as magnetic transmission, transmission develop new closed magnetic force drive valve series, eliminate funnelled between stem and packing, to make it applicable to flammable, explosive, toxic, corrosive medium and the request line locking, avoid the wrong operation.