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Our ability to develop seal products and demand analysis

2014/5/12

      China 's rapid economic development requires a lot of construction machinery, especially in some high- pressure hydraulic machinery and equipment, and the current Chinese Seals technical level , are far from meeting the domestic demand for seal for sealing industry is a very urgent to solve the problem. Sealing system design and application level depends on the ability to develop seal products , mainly in three aspects .

      One for static sealing system design , phasing out of plant fibers and asbestos material seal products , but the chemical polymer materials for seals , but there is no widely used in static sealing device of some liquid , the current domestic hydraulic rubber seals, rubber seals anaerobic , can be used in relatively small hydraulic system is equipped with a mechanical seal seals domestic brands, but also the level and quality of the manufacturing process and stability are imported seals have a big gap.

      Second, the axis of rotation for dynamic sealing systems , the majority of the market still use the normal standard seals , dynamic seals when the shaft rotating equipment design requirements when there is pressure , pressure, pressure -type level of domestic oil seal provided at 1-3 MPa, while imports of seal was able to provide a level of 10 MPa pressure , at least three times more than domestic products , the dynamic hydraulic pressure oil seal , there is no rotating mechanical shaft seal system has been widely applied .

      Third, the hydraulic cylinder reciprocating sealing system , the vast majority of the primary seal design is now on the market of domestic engineering hydraulic machinery , hydraulic cylinder dynamic sealing systems are generally U-shaped ring. And to the hydraulic machinery, designed reciprocating hydraulic cylinder dynamic sealing systems engineering in the 1990s , began using a more complex composite design and coaxial U -ring seal assembly. The current international mature design combination lap five , four combinations of laps, three laps combination , a combination of two rings, etc. , used in the hydraulic cylinder piston with a support ring , ring as a seal assembly combination of production technology level more complex , the domestic design and manufacturing capability can not be mass -volume production levels , the combination lap is quite poor.

      China also continue to introduce foreign advanced science and technology , manufacturing processes, the domestic construction machinery manufacturing industry has made substantial progress levels , advanced hydraulic seals hydraulic machinery engineering design level , the extent of the work of high pressure sealing system reliability can etc., have been greatly improved. China 's sealing industry has also been a lot of progress , gradually changed the low-power, high-energy small enterprise business model , launched in the mix of resources within the industry and some large sealing projects , future of the industry will be a high-efficiency, low energy consumption, highly intensive , more and more large-scale enterprises . Chinese seal product quantity and quality levels will gradually close and reached the international advanced level of manufacturing .

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