Abstract: A hot bed deformation tolerance structure for a large-sized continuous fiber high-temperature 3D printer is provided. Size changes caused by thermal expansion of a hot bed are compensated through motion coordination of a secured hot bed support assembly and a motion device, especially for an aluminum alloy material. A Z-direction motion structure of this structure is fixedly mounted with a frame and works at room temperature. A compensation motion module is fixedly mounted with a Z axis and incompletely secured with the hot bed support assembly, and works at room temperature with the Z axis. The hot bed support assembly is incompletely secured and partially in a high-temperature chamber, with a maximum working temperature of 300° C. The hot bed support assembly retains motion redundancy in a direction of thermal expansion deformation, tolerates thermal deformation through a linear motion module, and compensates for metal deformation through horizontal motion coordination.

Abstract: A wire feeding mechanism suitable for fused deposition Additive Manufacturing (AM) of a flexible wire is provided, which includes a support housing. A melting nozzle is arranged at the lower end of the support housing, a hook is connected to the inner wall of the top end of the support housing, a connecting rod is connected to the inner wall of one side of the support housing, a wire drawing mechanism is connected to one end of the connecting rod, the wire drawing mechanism is located at the lower end of the hook, a limiting mechanism and a wire guide mechanism are connected to the inner wall of one side of the support housing, the limiting mechanism is located at the lower end of the wire drawing mechanism, the wire guide mechanism is located at the lower end of the limiting mechanism.

Abstract: An additive manufacturing device for an aerospace truss includes a raw material input unit, a longitudinal beam forming unit, a longitudinal beam traction unit, a cross beam forming unit and a truss support unit. The raw material input unit stores pre-impregnated wires and pre-impregnated tapes, and a motor drives rollers to convey the pre-impregnated wires and the pre-impregnated tapes forward; the longitudinal beam forming unit is composed of three sets of forming molds, and the pre-impregnated tapes form V-shaped longitudinal beams through heating molds; a stepper motor used in the longitudinal beam traction unit drives three sets of roller traction devices through steering gears to pull formed longitudinal beams; the cross beam forming unit is composed of a motion module and a printing module, and a truss cross beam is printed through a 3D printing method of molten deposition.

Abstract: A static and closed solution casting process comprises the following steps: dissolve a solute in a solvent to prepare a casting solution; place membrane-casting plate on bracket, and adjust the bracket to make the membrane-casting plate horizontal; pour the casting solution into membrane-casting plate such that the casting solution is uniformly spread out in the membrane-casting plate; arrange heating arrangement over the membrane-casting plate; arrange cooling side plate around the membrane-casting plate; arrange cooling bottom plate below the membrane-casting plate; supply cooling liquor to the connected interlayer of the cooling side plate and the cooling bottom plate; enclose the membrane-casting plate, the bracket, the heating arrangement, the cooling side plate and the cooling bottom plate inside an insulated case made by heat insulator; heat the casting solution in the membrane-casting plate by driving the heating arrangement to totally evaporate the solvent in the casting solution; and then continuous

Abstract: Enclosed is an electrode for a flow battery, which comprises a graphite felt (1), wherein: said graphite felt includes multiple flow channels (2) for transmitting an electrolyte, said flow channels (2) are straight and distributed at equally spaced intervals, and the width and depth of said channels (2) and the interval between adjacent flow channels (2) are each half of the thickness of the graphite felt (1), which is a polyacrylonitrile graphite felt (1). Said flow battery electrolyte has a simple structure and is easily processed and assembled, the flow battery thickness and internal resistance are low, and transmission and dispersion of the electrolyte is highly effective. Flow batteries using said electrode enjoy high power density, high energy efficiency, long life, and can be made into high-power or even super-high-power flow batteries.

Abstract: A static and closed solution casting process comprises the following steps: dissolve a solute in a solvent to prepare a casting solution; place membrane-casting plate on bracket, and adjust the bracket to make the membrane-casting plate horizontal; pour the casting solution into membrane-casting plate such that the casting solution is uniformly spread out in the membrane-casting plate; arrange heating arrangement over the membrane-casting plate; arrange cooling side plate around the membrane-casting plate; arrange cooling bottom plate below the membrane-casting plate; supply cooling liquor to the connected interlayer of the cooling side plate and the cooling bottom plate; enclose the membrane-casting plate, the bracket, the heating arrangement, the cooling side plate and the cooling bottom plate inside an insulated case made by heat insulator; heat the casting solution in the membrane-casting plate by driving the heating arrangement to totally evaporate the solvent in the casting solution; and then continuous