Surface-hardening treatment method of sealing pairs and friction pairs of titanium and titanium alloy ball valves
A hardening treatment and titanium alloy technology, which is applied in gaseous chemical plating, superimposed layer plating, metal material coating technology, etc., can solve the problem of not being able to meet the wear resistance and long-term sealing requirements of titanium and titanium alloy ball valves, which cannot be realized Long-term wear resistance requirements, limited wear resistance of coatings and other issues, to achieve the effects of easy local protection, environmental protection, and improved hardness
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[0034] The invention relates to a surface hardening treatment method for titanium and titanium alloy ball valve sealing pairs and friction pairs. The surface hardening treatment method involves chemical heat treatment and vapor deposition hard coating, and the chemical heat treatment and vapor deposition hard coating are simultaneously applied to titanium And the sealing pair and friction pair of titanium alloy ball valve, which solves the problem of low surface hardness of titanium and titanium alloy ball valve after single chemical heat treatment. Due to the problem of poor hardness, the vapor-deposited hard coating further improves the bonding strength of the chemical heat treatment infiltration layer, and improves the hardness of the surface of titanium and titanium alloy ball valves. Even if the vapor-deposited hard coating is damaged during actual use, its The hardened layer formed by the chemical heat treatment infiltration layer can still play a protective role, achievi...
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