Extrusion forming method and equipment for continuous variable-wall-thickness pipe

The invention discloses an extrusion forming method and equipment for a continuous variable-wall-thickness pipe, and relates to the field of material processing and forming. Equipment and tools such as an extruder, materials and a mold are prepared, meanwhile, the materials are subjected to pretreatment and heating treatment, the preheated materials are fed into the extruder, and after being heated and pressurized, the materials are subjected to extrusion forming to obtain the continuous variable-wall-thickness pipe. The two ends of the profile are extruded and formed through the die, then the profile is extruded into the continuous variable cross-section material with the needed shape and size, and in the extrusion process, the continuous change of the cross-section shape and the wall thickness can be achieved by adjusting the parameters such as pressurization and heating and the speed of an extruder and adjusting the shape and the structure of the die. The variable-wall-thickness pipe is obtained through di