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Contact Person Ms. nancy
Shanghai KangCheng, Shanghai, Shanghai
The metal hard seal ball valve series has been updated continually in its hard surface improvement and structure optimal design in accordance with different working conditions of users since it was developed and put into production. At present the available seal hard surface types include: nickel-based, cobalt-based, metal ceramic coating (WC, Cr3C2, etc.) and the modification treatment of sealing surfaces. With a patent structural design developed independently, itâs especially applicable for harsh working conditions in such industries as power, coal chemical industry and poly-silicon. Main performance: Resistance to abrasion and erosion **- hardness; Hardened layer, avoiding shedding and cracking **- bonding strength and stress control; Low sealing rate and leak rate **- machining precision; Reliable use **-reasonable design of process and structure. Characteristics: âMultiple options for hard surface treatment âTargeted structural design âProtection function of elastic valve seat âDesign of special medium scraping and sweeping âDesign of dynamic load packing set âDesign of reinforced packing ring assembly âSplit seat design with patented technology, easy for maintenance and replacing âUltra-precision machining of closing member âHole sealing technology of coating âStress treatment technology of hard surface coating âOne-to-one valve design with simulated working conditions Advanced coating treatment technology ãããããã-High-Velocity Oxygen Fuel (HVOF) The hard surface treatment adopts the spray coating system of the world-famous SUCZER METCO, namely the high-velocity oxygen fuel (HVOF) in aerospace technology with the world patent: the spraying gun, designed with patented technologies, sprays the metal powder onto the metal surface with high-velocity air at 3 machs to form a high-strength coating. The hardness of the surfaceâs hardened layer is different subject to the sprayed material and the Rockwell hardness can exceed HRC*0, thus playing a big role in preventing the granular medium from washing the sealing surface. Leakage class Zero leakage when less than or equal to DN**0; conforming to API**8 or ASME b*6.**4 when more than DN**0
