| 摘要 |
<p>An anti-galling coating for a threaded joint of an oil casing. The mass percentages of the components of the coating are: organic binder 30-60 wt%, solid lubricant 30-60 wt%, anticorrosive agent 6-15 wt%, leveling agent 0.01-0.1 wt%, wetting agent 0.01-0.1 wt% and mixed solvent in addition. The organic binder is polyamide-imide liquid resin with a solid content of 38-42 wt%. The solid lubricant is any one of molybdenum disulphide and tungsten disulfide, or a combination of molybdenum disulfide or tungsten disulfide and polytetrafluoroethylene. Preferably the solid lubricant and the anticorrosive agent are surface modified with silane coupling agent. The anti-galling coating is obtained by spraying the coating on the surface of an oil casing joint processed with phosphate, and the environmental pollution caused by heavy metal powder in thread compounds is avoided.</p> |
