Abstract: A wall-thickness additive manufacturing device for micro cast-rolling additive manufacturing of large-scale special-shaped pipe, includes: a vertical wall, a heat-insulating cover, a crossed slide assembly and a laser cladding assembly. The vertical wall is horizontally provided on the ground; the crossed slide assembly is fixedly connected to the vertical wall; the laser cladding assembly is fixedly connected to the crossed slide assembly; the vertical wall has a shape of a T-shaped structure. The present invention uses laser welding to solve the problem of heat preservation of the processed workpiece in the process of wall-thickness forming and additive manufacturing.

Abstract: An inner cavity near-net-shaping device for micro cast-rolling additive manufacturing of large-scale special-shaped pipe, includes a main transmission assembly, an inner cavity near-net-shaping assembly and a main feed assembly. The inner cavity near-net-shaping assembly comprises an inner cavity mold, an expansion cylinder and an expansion push rod, the expansion cylinder is provided with a gap in a direction of a thin wall thickness thereof, an inner cavity surface of the expansion cylinder is evenly distributed along a circumferential direction thereof with the inner wedge-shaped slider, and the expansion push rod comprises a first shaft section, a second shaft section, an outer wedge-shaped slider and a third shaft section, an outer surface of the second shaft section of the expansion push rod is evenly distributed along a circumferential direction thereof with an outer wedge-shaped slider.

Abstract: A wall-thickness additive manufacturing device for micro cast-rolling additive manufacturing of large-scale special-shaped pipe, includes: a vertical wall, a heat-insulating cover, a crossed slide assembly and a laser cladding assembly. The vertical wall is horizontally provided on the ground; the crossed slide assembly is fixedly connected to the vertical wall; the laser cladding assembly is fixedly connected to the crossed slide assembly; the vertical wall has a shape of a T-shaped structure. The present invention uses laser welding to solve the problem of heat preservation of the processed workpiece in the process of wall-thickness forming and additive manufacturing.

Abstract: An inner cavity near-net-shaping device for micro cast-rolling additive manufacturing of large-scale special-shaped pipe, includes a main transmission assembly, an inner cavity near-net-shaping assembly and a main feed assembly. The inner cavity near-net-shaping assembly comprises an inner cavity mold, an expansion cylinder and an expansion push rod, the expansion cylinder is provided with a gap in a direction of a thin wall thickness thereof, an inner cavity surface of the expansion cylinder is evenly distributed along a circumferential direction thereof with the inner wedge-shaped slider, and the expansion push rod comprises a first shaft section, a second shaft section, an outer wedge-shaped slider and a third shaft section, an outer surface of the second shaft section of the expansion push rod is evenly distributed along a circumferential direction thereof with an outer wedge-shaped slider.