3results about How to "Reduce equipment weight" patented technology

This invention relates to the field of welding materials technology, and particularly to a high-performance aluminum-lithium alloy flux-cored welding wire and its preparation method. The high-performance aluminum-lithium alloy flux-cored welding wire comprises: an aluminum-based metal strip outer sheath; and flux powder filled within the outer sheath. The flux powder includes deoxidizing components, alloy components, arc-stabilizing components, slag-forming components, and binding components. The alloy components of the aluminum-lithium alloy flux-cored welding wire, by mass percentage, include: Cu: 3.7%-4.3%, Li: 0.8%-1.5%, Mg: 0.25%-1%, Zr: 0.1%-0.16%, with the balance being Al and unavoidable impurities. The burn-off rate of active elements is significantly reduced, and the composition control accuracy reaches ±0.05%. The flux structure encapsulates highly active elements such as Li, Mg, and Zr in powder form within the aluminum-based outer sheath, avoiding high-temperature volatilization and oxidation in traditional smelting processes. These elements are released only during welding, achieving precise composition control and enabling the stable preparation of aluminum-lithium alloy welding wires with high Li content (2%-3%).

The invention discloses composite ink, a preparation method thereof and application of the composite ink in an aerosol jet printing conformal circuit, and belongs to the technical field of common circuit preparation. The invention provides the composite ink which can be sintered in situ at a low post-processing temperature, and a conformal circuit is prepared on a polymer substrate by adopting an aerosol jet printing mode. According to the invention, silver nanoparticles and silver ions are compounded to prepare the composite ink for preparing a conformal circuit by aerosol jet printing. According to the composite ink, gaps among particles are filled with ink containing silver ions by utilizing the capillary action among the particles after nano-silver particle ink with high solid content is deposited on a substrate, the silver ions are reduced in situ on the heated substrate, the gaps of the original nano-particles are filled with the generated nano-silver particles, and the nano-silver particles are formed. And the conductivity of the conformal circuit is greatly improved. When the composite ink is used for aerosol jet printing, the conductivity of a prepared conformal circuit reaches 22.4 mu omega.cm at the post-processing temperature of 100 DEG C.

The present invention provides a lifting and horizontal plastic steel frame structure anti-collision device. The device includes a steel structure plane frame type lifting and horizontal plastic anti-collision steel frame composed of two supporting side columns, multiple horizontal anti-collision steel beams and multiple longitudinal beams, and a steel frame lifting mechanism and a lifting track; the two ends of each horizontal anti-collision steel beam of the anti-collision steel frame are respectively hinged to the two supporting side columns, and supporting wheels are provided at the two ends of the two supporting side columns; the lifting track includes two sets of tracks symmetrically arranged, each set of tracks includes a horizontal track arranged on the bottom surface of the cabin and a vertical track arranged on the inner wall of the main longitudinal beam of the cabin; when the ship passes through the cabin normally, the anti-collision steel frame is horizontally placed on the bottom surface of the cabin, and when the ship is intercepted, the anti-collision steel frame is driven by the lifting device to rise to a vertical state along the lifting. The present invention utilizes the plastic deformation energy of the steel frame to absorb the kinetic energy of the stalled ship, and protects the cabin door from being hit by the stalled ship when a ship stall accident occurs during the docking process of the ship lift cabin.