Manufacturing process of composite cylinder sleeve

The invention discloses a manufacturing process of a composite cylinder sleeve. In the process, a layer of 18-8 type Austenitic stainless steel is firstly clad on a working surface of a medium carbon quenched and tempered steel or alloy steel cylinder sleeve to be used as a bond coat by a laser cladding technology, and then a layer of 1Cr13 type Martensitic stainless steel is clad to be used as a wear-resistant corrosion-resistant surface layer to realize gradient compounding and strengthening, so the cylinder sleeve of a hydraulic transmission oil cylinder has longer service life and more balanced operation performance, and the problems of cylinder sleeve surface galling, hydraulic oil leakage and the like caused by the frequent reciprocating motion of a piston rod when the working surface of the cylinder sleeve lacks cooling lubricating oil or foreign matters enter the cylinder are avoided. The manufacturing process disclosed by the invention has strong technological parameter controllability, is convenient to operate, and brings convenience industrialized mass production.