Hydraulic support stand column cylinder barrel inner wall repairing process method based on laser cladding

The invention relates to a hydraulic support stand column cylinder barrel inner wall repairing process method based on laser cladding. The hydraulic support stand column cylinder barrel inner wall repairing process method comprises the following steps that S1, the proportion of a laser cladding material is determined, wherein the laser cladding material comprises the following raw materials in percentage: 17% of Cr, 0.61% of Mn, 1% of B, 0.76% of Si, 9% of Ni and the balance Fe; the technological parameters of laser cladding are as follows: the rated power is 10Kw, the service power is 9Kw, the powder feeding speed is 18r/min, the cladding speed is 50mm/s, the lap joint rate is 25%, and cladding powder needs to be dried in a drying box and then filtered by a screen; and S3, checking the cylinder barrel before cladding: checking whether the surface of the cylinder barrel has irreparable defects or not, checking whether the expansion of the cylinder barrel exceeds the range or not, and measuring the straightnes