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REPAIRING METHODS FOR HYDRAULIC-END VALVE CAGE CAVITY AND PLUNGER-END SEAL HOLE
REPAIRING METHODS FOR HYDRAULIC-END VALVE CAGE CAVITY AND PLUNGER-END SEAL HOLE
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机译:液压端阀腔腔和柱塞端密封孔的修复方法
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摘要
The present invention provides a repairing method for a hydraulic-end valve cage cavity. First, a to-be-repaired hydraulic-end valve cage cavity is mechanically processed to reserve a unilateral repair size of the cavity; shot blasting and cleaning are performed on the cavity; basic repairing is performed on the cavity to form a backing welding layer, and welding and cladding repairing are performed on the backing welding layer for n layers, to form n repair-welding layers; and finally machine finishing is performed on the cavity having undergone welding repair. The repairing method is also applicable to repairing of a plunger-end seal hole. The repairing method provided in the present invention is simple and is easy to be controlled, and a repaired hydraulic-end valve cage and plunger-end seal hole can be used in on-site fracturing construction in a condition of 50 MPa to 100 MPa for 200 h. By repairing the hydraulic-end valve cage and the plunger-end seal hole, equipment costs for oil fracturing can be significantly reduced.
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