High-strength low-temperature-resistant solid welding wire and automatic production equipment and production method thereof

The invention relates to the technical field of welding wire manufacturing, in particular to a high-strength low-temperature-resistant solid welding wire and automatic production equipment and a production method of the high-strength low-temperature-resistant solid welding wire. The welding wire comprises a center layer, an inner layer and an outer layer. The automatic production equipment comprises a movable body and a machining body arranged in the movable body, the movable body comprises a separating and combining box and a displacement body arranged on one side of the separating and combining box, and the machining body comprises a first injection part, a second injection part, a first twisting part, a third injection part, a second twisting part and a fourth injection part which are located in a box body. The solid core wire can be supported through the reinforcing ribs, the solid core wire is prevented from being twisted due to stress influence, the structural strength of the center layer can be enhance