The high temperature pneumatic ball valve of an American company is used in the reforming catalyst regeneration system of an enterprise, and its service life is as short as a few days, and as long as less than a month. At present, the solution is to replace the pneumatic ball valve or put it back into use after grinding the sealing surface of the ball and valve seat. However, such frequent replacement or maintenance not only increases the production cost and labor intensity of maintenance personnel, but also causes economic losses of millions of yuan caused by shutdown and overhaul due to frequent valve failures every year. For this reason, Al2O3-TiO2 and WC Co cermet coatings were prepared on the surface of high temperature pneumatic valve core materials by laser plasma spraying technology.

What kind of problems are stainless steel pneumatic butterfly valves facing?
First, the cost of consumption has risen too fast, the raw materials have generally risen, the cost of labor has risen too fast, the problem of difficult employment and labor shortage is very prominent, and the wages of workers in the Yangtze River Delta, Pearl River Delta and other coastal areas have generally risen. The above two "costs rise too fast" squeeze the profit space of pneumatic butterfly valve enterprises.
Second, the stainless steel pneumatic butterfly valve enterprises still bear a heavy burden, the charges for enterprises are still too high, and illegal charges still exist. For example, some central authorities use arbitrary charges to ease financial difficulties, some departments use their rights to collect fees to seek departmental interests, and some grass-roots law enforcement personnel use illegal charges to seek personal interests.
Third, since last year, in order to stabilize the achievements of the response to the financial crisis, China has implemented a prudent monetary policy, improved the bank reserve ratio for 12 consecutive times, and reduced the scope of credit, which has further increased the financing difficulty of small and medium-sized pneumatic butterfly valve enterprises, especially small and micro stainless steel pneumatic butterfly valve enterprises, A large number of small and medium-sized stainless steel pneumatic butterfly valve enterprises are in urgent need of private lending. The loan interest rate has reached 50% - 100%, and the financing cost remains high. In 2010, China's current financial system was difficult to deal with the "bottleneck" problem of small stainless steel pneumatic butterfly valve enterprises with limited financing channels, small scope and high cost.
Fourth, most small and medium-sized stainless steel pneumatic butterfly valve enterprises are at the low end of the traditional industrial value chain, with weak technological innovation ability, extensive consumption and operation, low level of equipment, shortage of professional talents, lack of independent knowledge, property rights and brands, and mainly rely on "low cost, low price, low profit" to participate in the competition, which makes it difficult to digest the rising factors of operating costs in a timely manner, Conform to the ideal request of changing the mode of development and adjusting and optimizing the economic structure.