Laser hot cladding process of oil pipe

Abstract

The invention relates to a laser hot cladding process of an oil pipe. The laser hot cladding process comprises the following steps: (1) cleaning oil stains and rust stains on the surface of the oil pipe; (2) performing sand-blast cleaning; (3) cleaning an area needing laser cladding; (4) carrying out flaw detection on the surface of the cleaned oil pipe by adopting a magnetic powder flaw detection method, determining whether an obvious flaw area exists or not, and flattening the area with obvious flaws, so that the affection on the laser cladding quality can be prevented; (5) powering on a laser, and cladding the to-be-repaired area of the oil pipe with CBN-Al2O3 nano powder with laser to form a cladding layer; and (6) polishing and trimming the cladding area, so that the size requirement in real application can be met. The laser technology is combined with the nano technology, and the CBN-Al2O3 nano powder covers the surface of the oil pipe in a cladding manner, so that the application performance of the oil pipe can be improved, the service life of the oil pipe can be prolonged, and the application and maintenance cost of the oil pipe can be reduced.

Description

technical field [0001] The invention relates to the technical field of oil pipe remanufacturing, in particular to a laser thermal cladding process for oil pipes. Background technique [0002] The oil pipe is a pipeline that transports crude oil and natural gas from the oil and gas layer to the surface after drilling to withstand the pressure generated during the production process. However, in the process of frequent oil delivery, it will cause serious wear to the oil pipe and greatly reduce the service life of the oil pipe. Therefore, regular inspection and maintenance are required to replace the oil pipe in time, otherwise the oil pipe will break and cause oil leakage. It will increase the use and maintenance cost of the oil pipe, and require a large number of maintenance personnel, the labor cost is high, and the service life of the oil pipe needs to be further extended to meet the needs of oil transportation. Contents of the invention [0003] The technical problem to...

AI Technical Summary

Problems solved by technology

However, in the process of frequent oil delivery, it will cause serious wear to the oil pipe and greatly reduce the service life of the oil pipe. Therefore, regular inspection and maintenance are required to replace the oil pipe in time, otherwise the oil pipe will break and cause oil leakage. It will increase the use and maintenance cost of the oil pipe, and require a large number of maintenance personnel, and the labor cost is high. It is necessary to further extend the service life of the oil pipe to meet the needs of oil transportation.