electroslag pressure welding
Electroslag pressure welding is an advanced joining technology that combines the principles of electroslag welding and pressure welding processes. This innovative method utilizes electrical resistance heating and controlled pressure to create high-quality, full-penetration welds in thick metal sections. The process begins with the establishment of a molten slag bath maintained by electrical current passing between the workpieces. As the slag heats up, it melts the surfaces of the materials to be joined, while simultaneously applying precisely controlled pressure ensures complete fusion. The method is particularly effective for welding thick plates and large cross-sectional areas, typically ranging from 30mm to 400mm in thickness. The process stands out for its ability to create high-integrity welds in a single pass, eliminating the need for multiple welding operations. The controlled heating and cooling cycles, combined with the protective slag environment, result in superior metallurgical properties and minimal distortion. This welding technique finds extensive applications in heavy industries, including shipbuilding, pressure vessel manufacturing, and structural steel fabrication, where high-quality welds in thick sections are crucial for operational integrity and safety.