Sewage pump impeller surface enamel treatment technology and method

• Main Author: HAO FENGLIN
• Format: Patent
• Language: Chinese; English
• Published: 18.11.2022
• Subjects: BLASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ENAMELLING OF, OR APPLYING A VITREOUS LAYER TO, METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; HEATING; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; LIGHTING; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; MECHANICAL ENGINEERING; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; NON-POSITIVE DISPLACEMENT PUMPS; POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS; WEAPONS

The invention discloses a sewage pump impeller surface enamel treatment technology and method.The sewage pump impeller surface enamel treatment technology comprises an impeller, the impeller is movably connected with a technological short shaft through a technological nut, impeller blades are arranged in the impeller, an impeller outer surface enamel layer is arranged on the outer side face of the impeller, and an impeller runner is arranged in the impeller; an impeller inner surface enamel layer is arranged on the inner side face of the impeller runner, a blade surface enamel layer is arranged on the side surface of the impeller blade, and the impeller blade is installed in the impeller runner, and the method comprises the steps that S1, a cast finished impeller is annealed so as to eliminate casting stress of the impeller, remove graphite and decarburize the surface, the annealing temperature is controlled to be 750-800 DEG C, and the annealing temperature is controlled to be 700-800 DEG C; the annealing ti