The inner circular surface of the sleeve of an oil drilling tool will be quickly worn out due to erosion by mud. It is difficult for conventional repair and reinforcement methods to truly extend the service life of parts. The deep inner hole laser cladding method is used to repair and strengthen the inner wall erosion parts, which can not only restore the original size of the part, but also greatly improve the service life of the part.

The material of the cladding layer is a cobalt-based corrosion-resistant alloy with a hardness of 55HRC, which is higher than the hardness of the substrate, and the metallurgical combination of the cladding layer and the substrate material does not cause problems such as cracks and peeling during use.

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