When a ship turned the diesel engine before performing the task, it was found that the fresh water pressure of the diesel engine gradually dropped to zero. The fresh water pump was removed and it was found that the inner hole of the impeller (material QA19-2) had severe scratches, and the surface of the pump shaft (material 2Cr13) was slightly scratched. It was found that the pump shaft and the inner hole of the impeller were measured. The surface has been fitted with a clearance, the taper of the impeller is 1:10, and the taper of the pump shaft is 1:8. There are two possible ways for the pump: the first possibility
Ingenious application of adhesive on pump shaft repair