15 results about "Level aluminum" patented technology

The application relates to the technical field of aluminum nitride synthesis, and provides a preparation method of self-propagating combustion synthesis micron-level aluminum nitride powder, which solves the problems of poor controllability, high impurity content, high energy consumption, high cost and coarse and uneven product crystal grains in the traditional aluminum nitride combustion synthesis process; the method comprises the following steps: S1, dosing: the first mixture, the second mixture and the third mixture are all composed of 30-35 parts by weight of mixed aluminum powder, 65-70 parts by weight of aluminum nitride powder and ammonium salt; S2, gradient dosing: the third mixture, the second mixture and the first mixture are sequentially layered and laid into a material frame; S3, combustion reaction: the material frame is placed into a high-pressure reaction kettle, and a current is introduced to trigger a self-propagating combustion synthesis reaction; and S4, post-treatment: after the reaction is completed, the initially prepared micron-level aluminum nitride powder is used as an aluminum nitride diluent, steps S1 to S4 are repeated, 6-8 times of iterative nitriding are carried out, and the self-propagating combustion synthesis micron-level aluminum nitride powder is obtained.

The invention relates to the technical field of aluminum nitride synthesis, provides a preparation method of low-oxygen-content aluminum nitride powder, and solves the problems of high oxygen content of a product, difficulty in control of a reaction process and relatively high production cost when the aluminum nitride powder is prepared by a traditional combustion synthesis method. Comprising the following steps: S1, mixing aluminum powder, aluminum nitride powder and ammonium salt to obtain mixed powder; s2, the mixed powder is laid in a metal material frame, an ignition wire is fixed, and an ignition agent is added; s3, the mixture is placed in a high-pressure combustion synthesis reaction kettle, nitrogen is introduced after gas washing and vacuumizing are conducted, current is introduced to ignite an ignition agent, a self-propagating combustion synthesis reaction is induced, cooling and pressure relief are conducted after the reaction is completed, a product is taken out, and micron-sized aluminum nitride powder is obtained through fine grinding; and S4, taking the micron-sized aluminum nitride powder as an aluminum nitride raw material, re-mixing the micron-sized aluminum nitride powder with the corresponding parts by weight of the aluminum powder and the ammonium salt according to the proportion in S1, and repeating the steps from S1 to S3 for six times to obtain the low-oxygen-content aluminum nitride ceramic powder.

This utility model relates to the field of exhibition display racks, specifically disclosing a prefabricated display rack; it includes: a base frame composed of two horizontal aluminum profiles connected to form an L-shaped structure; a vertical support assembly including three vertical aluminum profile columns arranged at right angles to form corner supports; a display panel fixing assembly including several circular optical shaft rods and locking components, arranged vertically and horizontally and fixed by connectors to support the display panels; a cable support assembly including triangular connecting plates and steel cables, using a diagonal tension method to enhance stability; and a top cover assembly covering the top of the columns. It is mainly used in exhibitions, retail stores, museums, and other scenarios, supporting rapid assembly and multi-faceted display, optimizing space utilization.

The application discloses a special-shaped aluminum profile polishing device and method, and relates to the technical field of polishing burrs on the inner and outer sides of two horizontal aluminum pieces and two arc-shaped aluminum pieces of a special-shaped aluminum profile. The device comprises a clamp arranged on a machine table and used for positioning and fixing the special-shaped aluminum profile. A gantry is arranged above the clamp. A bidirectional oil cylinder is fixed on the bottom surface of the gantry beam. A polishing assembly A is arranged on the right piston rod of the bidirectional oil cylinder and used for polishing the inner and outer burrs of the right arc-shaped aluminum piece and the right horizontal aluminum piece of the special-shaped aluminum profile. A polishing assembly B is arranged on the left piston rod of the bidirectional oil cylinder and used for polishing the inner and outer burrs of the right arc-shaped aluminum piece and the right horizontal aluminum piece of the special-shaped aluminum profile. The device has the advantages of greatly improving the polishing efficiency and quality of the special-shaped aluminum profile.

The application provides an aluminum alloy wire for 600MPa strength grade aluminum alloy electric arc additive pieces and a preparation method thereof, and belongs to the technical field of aluminum alloy wires.The aluminum alloy wire is mainly composed of aluminum (Al), zinc (Zn), magnesium (Mg), copper (Cu), strontium (Sr), zirconium (Zr), titanium (Ti), scandium (Sc), erbium (Er), cerium (Ce) and lanthanum (La). The preparation of the alloy comprises the following steps in sequence: (1) melting and casting; (2) homogenization treatment; (3) hot extrusion; (4) spiral rolling; (5) surfacing process; and (6) subsequent heat treatment. The maximum strength of the alloy can reach 600MPa, the elongation after fracture is 5.4%, and the exfoliation corrosion grade is PC grade.

The application discloses a thin film aluminum-plated composite current collector and a preparation method thereof, and relates to the technical field of current collectors. The application firstly performs low-temperature plasma treatment on a base film to introduce hydroxyl groups, then immerses the base film into a modified liquid containing an acylhydrazone bond intermediate A, and forms a modified base film containing a dynamic covalent bond through heating and epoxy ring opening crosslinking; subsequently, a micron-level aluminum layer is deposited on both sides of the base film through magnetron sputtering and vacuum evaporation; finally, the aluminum layer is subjected to gradient heat treatment assisted by a magnetic field to optimize the grain orientation and refine the grains of the aluminum layer; the dynamic covalent bond layer forms a coordination bond with aluminum atoms through a nitrogen-containing functional group to improve the interface bonding strength, and the dynamic covalent bond and the crosslinking network endow the base film with excellent stability and electrolyte blocking ability; the gradient heat treatment assisted by the magnetic field optimizes the electrical conductivity and mechanical properties of the aluminum layer in cooperation, and also releases the internal stress of the film, effectively avoiding product curling or cracking. The thin film aluminum-plated composite current collector prepared by the application has the effects of good electrical conductivity, high interface bonding and excellent electrochemical stability.

The utility model discloses an aluminum electrolysis anode guide rod copper embedding structure which comprises an anode guide rod, a copper-aluminum composite block and a horizontal aluminum bus, the copper-aluminum composite block is provided with a copper connecting surface and an aluminum connecting surface, the copper connecting surface and the aluminum connecting surface are oppositely arranged, the copper-aluminum composite block is installed on one side of the anode guide rod in an embedded mode, and the horizontal aluminum bus is installed on the other side of the anode guide rod. The horizontal aluminum bus is connected to the surface of the aluminum connecting face in a pressing mode, and the contact area of the horizontal aluminum bus and the aluminum connecting face is smaller than the total area of the aluminum connecting face. The copper-aluminum composite block is embedded into the anode guide rod and is tightly connected with the anode guide rod in a non-ferrous welding manner, the copper-aluminum composite block is provided with a copper connecting surface and an aluminum connecting surface, the copper connecting surface faces the anode guide rod and is in contact connection with the anode guide rod during installation, and the aluminum connecting surface is used for connecting a horizontal aluminum bus; the copper-aluminum composite block is arranged on the anode guide rod, and the conductivity of copper metal is utilized, so that the energy consumption can be greatly reduced.

The application discloses a vertical connecting device for aluminum pipes, which comprises a vertical aluminum pipe, a horizontal aluminum pipe, a screw aluminum plate, an upper pressing plate and a screw. The vertical aluminum pipe and the horizontal aluminum pipe are vertically arranged and the surfaces of the vertical aluminum pipe and the horizontal aluminum pipe are attached to each other. The upper pressing plate is provided with a first boss, and the vertical aluminum pipe is provided with a first lock hole. The first boss and the first lock hole are of the same shape and size and are designed as an interference fit. The screw aluminum plate is provided with a second boss, and the horizontal aluminum pipe is provided with a second lock hole. The second boss and the second lock hole are of the same shape and size and are designed as an interference fit. The vertical aluminum pipe, the horizontal aluminum pipe, the screw aluminum plate and the upper pressing plate are fastened and connected from top to bottom by at least four screws. The device is based on the vertical connection and anti-hole expansion mechanism of the aluminum pipe realized by the inlaid parts in the small-volume aluminum pipe. The simple mechanical design of the vertical connection of the aluminum pipe is realized by a more reliable and simple mechanical structure.

The invention discloses a method for multi-level aluminum-iron separation of high-aluminum coal gangue and preparation of aluminum oxide for electrolysis, and belongs to the field of comprehensive utilization of solid waste resources. In order to solve the technical problem that iron impurities are difficult to deeply purify in the process of extracting aluminum from coal gangue by an acid method, the invention adopts a multi-stage iron removal process of magnetizing roasting and strong magnetic iron removal, and aluminum ammonium sulfate crystallization exclusion and hydrothermal open-circuit iron removal, and adopts a combined technical means of physical separation, chemical precipitation, crystallization, hydrothermal transformation and the like to purify the iron impurities in the process of extracting aluminum from coal gangue by an acid method. According to the method, high-efficiency separation of iron and aluminum can be realized by changing macro-quantity impurity removal of iron impurities in the coal gangue into fine and deep purification, so that aluminum oxide for electrolysis meeting the national standard (GB / T 24487-2022) is obtained, iron in the coal gangue is also efficiently enriched to obtain high-grade iron ore concentrate, and resource utilization of a large amount of solid waste coal gangue is realized.

The invention discloses an extremely simple method for activating millimeter-level commercial aluminum particles based on a ball milling method and making the millimeter-level commercial aluminum particles into a millimeter-level aluminum ball material. The commercial aluminum particles are chemically inert, halide is adopted as the grinding aid, oxidation films on the surfaces of the millimeter-level commercial aluminum particles can be effectively cut, and the activity of millimeter-level commercial aluminum particle materials is effectively activated under the condition that internal active aluminum is not changed. The specific preparation method comprises the following steps: uniformly mixing millimeter-level commercial aluminum particles, halide and grinding balls, and activating a millimeter-level commercial aluminum particle material through a mechanical ball milling effect at a certain rotating speed for a certain time, so that the millimeter-level spherical zero-valent aluminum material with activity can be obtained. The method is simple in preparation process, wide in raw material source, low in cost, environmentally friendly and easy to engineer, and the prepared zero-valent aluminum material is in a regular spherical shape, convenient to store, fill and use, free of chippings and free of flammable and explosive risks. The sphere can effectively improve the mass transfer efficiency, and can be used for efficient wastewater treatment. The high cost of the nano or micron-sized aluminum powder and the application of the zero-valent aluminum material in actual wastewater treatment are limited by the nano or micron-sized aluminum powder as a control drug, the current situation is changed, and millimeter-sized zero-valent aluminum which is low in cost, non-controlled and high in reducing capacity is expected to be pushed to the field of water treatment.

1. The name of the design product: the level aluminum alloy lifting platform. 2. The use of the design product: for the level lifting platform. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1. 5. The rear view is embodied in perspective view 2, and the rear view is omitted.

A storm shutter system for integration into a window or door frame is disclosed, comprising a shutter frame including vertical and horizontal aluminum tube frames, an aluminum box recessed within the window or door opening, a rod for rolling and storing the storm shutter, one or more shutter tracks guiding the shutter between open and closed positions, and a roll-up mechanism operably connected to the rod. The aluminum box includes a hood defining an interior space with a bottom opening for shutter access, and is recessed to maintain a flat exterior surface. The storm shutter is configured to roll onto the rod and unroll downward along the shutter tracks, while the roll-up mechanism drives movement of the shutter. The system provides secure, concealed storage of the shutter, reduces visual impact on building exteriors, and enables smooth operation between open and closed positions.

The invention provides a preparation method of a high-thermal-conductivity and good-insulation composite coating suitable for the surface of an aluminum substrate, which combines an anodic oxidation technology and a micro-arc oxidation technology, after an anodic oxidation coating grows to a certain thickness, an oxygen plasma air gap film in a non-condensation state is initiated on the surface of an anode by regulating and controlling electric field parameters between the anode and the cathode, and the composite coating is prepared. Under the action of ionization heat and cavitation force, the colloidal anodic oxidation coating can generate crystallization phase change and densification reconstruction processes, so that an Al2O3 ceramic layer with the thickness of 50 microns or above is prepared on the surface of the aluminum substrate, and the heat-conducting property of the kilovolt-level aluminum substrate is remarkably improved.

The application provides an aluminum alloy wire for 650MPa strength grade aluminum alloy electric arc additive pieces and a preparation method thereof, and belongs to the technical field of aluminum alloy wires.The aluminum alloy wire is mainly composed of aluminum (Al), zinc (Zn), magnesium (Mg), copper (Cu), strontium (Sr), zirconium (Zr), titanium (Ti), scandium (Sc) and erbium (Er). The preparation of the alloy wire comprises the following steps in sequence: (1) melting and casting; (2) homogenization treatment; (3) hot extrusion; and (4) spiral rolling. Finally, the wire with a length of 10m and a diameter of 1mm can be obtained. Then, the subsequent surfacing process and subsequent heat treatment are carried out. The maximum strength of the alloy can reach 650MPa, and the elongation after breaking is 4.3%.

The utility model discloses a leveler capable of guiding and limiting, which relates to the technical field of levelers, and comprises a frame main body, a driving motor, a fixing frame, an upper leveling roller and a lower leveling roller, the top of the frame main body is respectively provided with the driving motor and the fixing frame, and the inner side of the fixing frame is respectively provided with the upper leveling roller and the lower leveling roller. According to the leveling machine capable of guiding and limiting, when a forward and reverse motor rotates forwards, a gear can be driven to rotate through a rotating shaft, when the gear rotates, a first rack and a second rack can be driven to move in a meshed mode, and when the first rack and the second rack move, a sliding block and two sets of guide plates can be driven to move oppositely; when one end of the aluminum plate after being leveled is moved out from the position between the upper leveling roller and the lower leveling roller, the end can fall on the movable rolling wheel, the leveled aluminum plate can be supported and received through the movable rolling wheel, and therefore manual material receiving by workers is not needed, and the labor amount of the workers can be reduced.