Metal welding and surface treatment all-in-one machine

The utility model discloses a metal welding and surface treatment all-in-one machine, which belongs to the field of metal welding treatment and comprises a working platform, trusses are arranged on two sides of the working platform, and a welding device and a moving device are respectively mounted on the outer sides of the two trusses. A circular block is installed on one side of the top of the moving device, a motor is fixed to the center of the top of the circular block, the output end of the motor vertically and downwards penetrates through the circular block to be fixedly provided with a grinding disc, the grinding disc is rotationally connected with the circular block, and at least one anti-abrasion assembly is fixed to the outer side of the circular block and used for preventing the grinding disc from abrading workpieces. The anti-abrasion assembly comprises a fixing block, the fixing block is fixed to the outer side of the circular block, and a sliding rod is installed on the inner side of the fixing b