Submerged arc welding control method and device

The invention provides a submerged arc welding control method and device. The device comprises a carbon dioxide welder, a submerged arc welding controller and a wire feeder. On one hand, the submerged arc welding controller performs pulse output control on welding current and welding voltage to control energy input; on the other hand, the feed rate of welding wires is enabled to reach a stable appropriate value by controlling wire feeding voltage of a wire feeder, so that submerged arc welding with large fusion depth is realized. According to the submerged arc welding control method and device, external submerged arc control is performed by the carbon dioxide welder on the basis of common constant voltage external characteristics, the welding with large fusion depth is realized, welding defects are reduced, product performance is improved, repair rate is reduced, production efficiency and working safety are improved, and the method and the device have obvious advantages in mean position welding of a medium pl