228 results about "Silumin" patented technology

The disclosure provides Si-free aluminum alloys comprising Ce, Zn, and Mg suitable for laser powder bed fusion (LPBF) 3D printing. The printed components can be subjected to hot isostatic pressing and further heat treated to provide 3D printed components exhibiting higher hardness than existing Al-Si based alloys produced under the same conditions. The Si-free aluminum alloy resists coarsening of second phase on HIP, retaining high strength and hardness. The alloy also does not need separate solutionizing and water quenching following HIP, thus saving cost, time and permitting design of more delicate and intricate geometries.

The invention discloses a high-strength aluminum alloy profile for an anti-collision beam and a preparation method of the high-strength aluminum alloy profile, and the aluminum alloy profile comprises the following components in percentage by mass: 0.42-0.62% of Si; 0.15% to 0.30% of Fe; 0.18% to 0.35% of Cu; mn: less than or equal to 0.15%; mg: 0.87%-1.07%; 0.06% to 0.24% of Cr; 0.10% or less of Zn; 0.02% to 0.14% of Ti; 0.05%-0.15% of La series rare earth; 0.02% to 0.05% of Ge; and the balance of Al and inevitable impurities. The components of the 6-series aluminum alloy are optimized, the content of Fe and Zn is reduced, a small amount of Ge is introduced, the Ge can replace part of Si, compared with Si, a composite phase higher in density and better in coherence with a matrix is formed, and the strength of the aluminum alloy is improved. In addition, Sc is further introduced, Sc and Ge have a good synergistic effect with other elements, and the strength and toughness of the aluminum alloy are remarkably improved.

The invention discloses a notebook computer shell processing method and relates to the technical field of notebook computer shells. The method comprises the following steps: S1, material selection: selecting a high-strength aluminum alloy plate; s2, material cutting is conducted, specifically, the high-strength aluminum alloy plate is cut into a primary blank according to the needed size and shape; s3, pressing a bending groove: pressing the bending groove at the joint between the bottom shell and the bending part; s4, primary bending: stopping applying pressure when a bending angle of 50-80 degrees is formed between the bottom shell and the bending part; s5, secondary bending: forming a 90-degree bending angle between the bottom shell and the bending part; s6, primary hemming: arranging a necking part at the top of the bending part, and stopping applying pressure when a hemming angle of 50-80 degrees is formed between the necking part and the bending part; s7, performing secondary hemming to form a 90-degree hemming angle between the necking part and the bending part; and S8, back extrusion is carried out, wherein a right-angle inner curled edge is formed between the inner side of the necking part and the bent part. The technical scheme has the advantages of strong supporting force, high structural strength, difficulty in deformation and easiness in surface treatment.

Disclosed are a high-strength aluminum alloy powder and preparation method thereof, as well as high-strength aluminum alloy parts and additive manufacturing method thereof. The high-strength aluminum alloy powder includes the following components by weight percentage: 4.0 wt. % to 7.0 wt. % of Zn, 1.5 wt. % to 3.5 wt. % of Mg, 1.0 wt. % to 3.5 wt. % of Cu, the content of Sc is a, and 0.4 wt. %≤a≤1.3 wt. %, at most 0.2 wt. % of Zr, at most 0.5 wt. % of Fe, at most 0.4 wt. % of Si, at most 0.5 wt. % of Mn, at most 0.2 wt. % of Ti, at most 0.28 wt. % of Cr, at most 0.05 wt. % of O and N, and the balance of Al.

The utility model provides a low-temperature brittle-fracture-resistant special alloy plate. The low-temperature brittle-fracture-resistant special alloy plate is characterized in that the alloy plate is arranged in a frame assembly, the alloy plate comprises a base layer, two reinforcing layers, two composite layers and two wear-resistant layers, the base layer is made of high-strength 7075 aluminum alloy and used for providing bearing capacity, the reinforcing layers are made of ferrite and used for preventing cracks from expanding, and the composite layers are made of high-strength aluminum alloy and used for providing high-strength aluminum alloy and used for providing high-strength aluminum alloy and high-strength aluminum alloy and used for providing high-strength aluminum alloy and high-strength aluminum alloy. The composite layer is made of a nickel-based alloy material and is used for absorbing external impact energy, and the wear-resistant layer is made of a tungsten steel material and is used for increasing wear resistance; the multiple reinforcing ribs are installed at the top and the bottom of the base layer correspondingly, and butt joint openings are formed in the adjacent faces of the two reinforcing layers correspondingly. According to the low-temperature brittle-failure-resistant special alloy plate provided by the utility model, crack propagation can be effectively hindered through the design, so that when the alloy plate bears external force at a low temperature, cracks need to continuously change directions to bypass grain boundaries and consume more energy, and thus the brittle-failure-resistant capability is remarkably improved.

The utility model provides a building daylighting roof which comprises an outer frame, a daylighting assembly and a heat insulation assembly, the outer frame is made of high-strength aluminum alloy materials and fixed to the top of a building body through expansion bolts, the daylighting assembly is installed on the outer frame, and the daylighting assembly is composed of multiple layers of composite boards. Comprising an outer tempered glass layer, a middle polycarbonate sunlight plate layer and an inner dimming glass layer, and the heat insulation and heat preservation assembly is installed on the outer frame and located below the lighting assembly. The indoor temperature can be reduced in summer, the indoor temperature can be kept warm in winter, the energy consumption of an air conditioning system is reduced, and the energy-saving target of a building is achieved.

The invention provides a hard and tough alternately laminated light-weight corrosion-resistant composite material, which comprises a laminated matrix formed by periodically and alternately stacking high-strength aluminum alloy layers and carbon fiber reinforced thermoplastic resin layers; the metallurgical-mechanical composite interface is located between the high-strength aluminum alloy layer and the carbon fiber reinforced thermoplastic resin layer, forms a nanoscale coarse structure on the surface of the aluminum alloy through plasma activation treatment, and is combined with the thermoplastic resin matrix to form a transition area with mechanical interlocking and chemical bonding functions; the conductive polymer anticorrosive coating covers the surface of the outermost layer of the laminated matrix; the preparation method of the light-weight anti-corrosion composite material comprises the following steps: surface pretreatment, plasma activation treatment, laying, hot-pressing curing and preparation of an anti-corrosion coating. Through the synergistic effect of macroscopic laminated configuration design, microcosmic interface strengthening and a surface active anti-corrosion coating, the advantage of light weight is kept, and meanwhile, balanced improvement of impact wear resistance and long-acting electrochemical corrosion resistance is achieved.

The utility model discloses a distribution cabinet for a cable demarcation room, which belongs to the technical field of distribution cabinets and comprises a shell frame, a protective cover plate, an adjustable support and a modular wiring board. The distribution cabinet for the cable demarcation room is novel in design and ingenious in device, a brand-new design scheme of the distribution cabinet for the cable demarcation room is provided, the defects of a traditional product are overcome, and the distribution cabinet for the cable demarcation room adopts an open type framework concept to be matched with a flexible and changeable combined accessory form; not only is the space use efficiency greatly improved, but also new challenges possibly occurring in the future can be effectively handled, specifically, a stable and reliable bearing platform and a high-strength aluminum alloy shell frame are constructed, and a set of convenient and efficient cable management system, an adjustable bracket and a modular wiring board combination are introduced. And the space occupancy rate of the distribution cabinet in the cable demarcation chamber is greatly improved, so that the distribution cabinet better meets the requirement of the miniaturization trend of current electric power facilities.

The utility model discloses a smoke baffle door of a light-weight elastic sealing structure, and relates to the technical field of smoke baffle doors, the smoke baffle door comprises a door frame and a door plate arranged on the inner side of the door frame, and further comprises a sealing assembly, an elastic pressing assembly, a linkage assembly and a chimney assembly, the door frame is made of a high-strength aluminum alloy material, and the door plate is made of a carbon fiber composite material. According to the utility model, through the wavy elastic sealing gasket and the belleville spring capable of automatically compensating and pressing, the sealing performance is effectively improved, and the smoke leakage is greatly reduced; the aluminum alloy door frame and the carbon fiber composite material door plate are adopted, the weight of the baffle door is obviously reduced, installation and maintenance are convenient, meanwhile, the load of a supporting structure is relieved, and the construction cost is reduced; the device is made of a high-temperature-resistant and corrosion-resistant sealing material and a belleville spring with good buffering performance, so that the device can adapt to a severe smoke environment, and the fatigue damage of a sealing piece is reduced.

A motor applied to a five-in-one electric pump assembly of an active suspension of a vehicle chassis belongs to the technical field of vehicle chassis, and comprises a motor shell, a stator, a rotor and a motor shaft, the motor shell is fixedly connected with the stator, the motor shaft is in interference press fit with the rotor, the motor shell is a high-strength aluminum alloy shell, and the stator is a high-strength aluminum alloy shell. The rotor is arranged in the shell, the rotor and the stator are thermally sleeved together in a heating expansion mode, a protective sleeve is arranged on the inner side of the stator, the protective sleeve is pressed on a corresponding mounting position of the shell to perform sealing protection on the rotor, the motor shaft is a hollow shaft, an oil path channel is arranged in the motor shaft, and the oil path channel is communicated with an air gap between the stator and the rotor. Through the integrated and compact design, the space occupation is reduced, the weight is reduced, the manufacturing cost and the assembly cost are reduced, and the performance and the heat dissipation of the motor are greatly improved.

The invention belongs to the technical field of aluminum alloy material processing, and discloses a cryogenic treatment process of a 7xxx series high-strength aluminum alloy pipe, the process sequentially comprises three core steps of solution treatment, cryogenic treatment and aging treatment, and the 7xxx series high-strength aluminum alloy pipe is obtained by accurately controlling key parameters of each step. The technical problems that in a traditional T6 heat treatment process, a 7xxx series aluminum alloy pipe is uneven in precipitated phase distribution, grain refinement is insufficient, the strength and plasticity are difficult to consider, and internal stress is large are solved. After being treated by the process, the tensile strength of the pipe is improved to 705MPa, the yield strength is improved to 678MPa, the ductility is improved to 11.8%, the size of a precipitated phase in a microstructure is smaller, distribution is more uniform, the internal stress is remarkably reduced, the size stability is greatly improved, industrial batch production can be realized, and the requirements of the fields of aerospace, rail transit and the like on the high-performance aluminum alloy pipe are met.

The invention relates to the technical field of extrusion dies, in particular to a high-strength aluminum alloy extrusion die temperature compensation system which comprises a divergent die, a die holder and a die body, a plurality of divergent bridges are arranged on the divergent die, a die core is arranged in the middle of the divergent die, the divergent bridges are all connected with the die core, and the die holder is coaxially connected to the front end face of the divergent die through bolts; the water pressing groove is formed in the front end of the die holder, the section of the water pressing groove is designed to be in the frustum shape, and cooling liquid entering the water pressing groove flows from the front end to the rear end, so that the cooling effect on the front end of the forming part is higher than that of the rear end, and the situation that the extrusion forming speed of a high-strength aluminum alloy profile is affected due to temperature reduction is avoided; and meanwhile, the problem that the strength of the high-strength aluminum alloy profile is reduced due to the fact that the grain structure in the high-strength aluminum alloy is suddenly changed due to temperature suddenly changing of the high-strength aluminum alloy profile in the extrusion direction is solved, the physical property of the profile is guaranteed, and meanwhile the surface quality of the profile is guaranteed.

The invention provides a device and a method for modularly and quantitatively testing thermal runaway exhaust heat flux of a lithium ion battery, and belongs to the technical field of lithium ion battery testing. A framework of the device for modularly and quantitatively testing thermal runaway exhaust heat flux of the lithium ion battery is constructed by high-strength aluminum alloy sections; a top plate with adjustable height and peripheral baffle plates form a limited space inside a space constraint simulation battery pack, a heating trigger device is arranged inside the space constraint simulation battery pack, and a distributed temperature measurement plate array is positioned and fixed around the top of a test battery in the heating trigger device through a slot, so that the arrangement requirements of different experiment working conditions can be met; the real-time monitoring and quantitative analysis of the heat flux of the thermal runaway exhaust in the constraint space are realized; the invention provides a device and a method for modularly and quantitatively testing thermal runaway exhaust heat flux of a lithium ion battery. Experimental reduction and heat quantification of thermal runaway exhaust to a heating process of an adjacent area can be realized.

The utility model belongs to the technical field of shielding cabinets, particularly relates to a portable shielding cabinet made of lightweight composite materials, and aims to solve the problems that a main body structure of an existing device is integrally made of metal materials, and although the metal materials have excellent electromagnetic shielding performance, the self weight of the metal materials is large, so that in a scene needing frequent movement or temporary construction, the electromagnetic shielding performance of the metal materials is poor. In order to solve the problems that a traditional shielding cabinet is extremely inconvenient to carry and consumes a large amount of manpower and material resources, the utility model provides the following scheme that the portable shielding cabinet made of the lightweight composite material comprises a frame main body which adopts a frame type structure; the utility model has the beneficial effects that the frame main body is formed by splicing high-strength aluminum alloy sections, the density is low, the weight is light, the frame type structure is matched, the frame is stable, the portability is obviously improved, the carrying is easy and labor-saving, the corner connecting pieces are made of high-strength engineering plastics, the weight is reduced, electromagnetic conduction is prevented, and the shielding performance is optimized.

The utility model belongs to the technical field of doors and windows, in particular to a novel hollow glass aluminum tube suitable for doors and windows, which comprises an aluminum tube body, glass is arranged on both sides of the aluminum tube body, a sealing rubber strip is fixedly connected between the inner wall of the aluminum tube body and one side of the glass, and a drying agent cavity is arranged on the aluminum tube body. The aluminum pipe body is made of the high-strength aluminum alloy material, the aluminum pipe body and the glass are installed through the sealing rubber strip, direct convection of indoor air and outdoor air is effectively prevented, the drying agent can absorb moisture in the hollow glass, moisture condensation and corrosion are prevented, and through the arrangement of the through holes, the service life of the hollow glass is prolonged. Water in the hollow space in the glass can conveniently enter the aluminum pipe body, so that a drying agent can conveniently adsorb the water, the aluminum pipe body and an external structure are conveniently installed and connected through the grooves, the corrosion resistance of the aluminum pipe body is enhanced through the oxidation film, the corrosion-resistant coating can resist corrosion of acid, alkali, salt and other chemical substances, and the service life of the aluminum pipe body is prolonged. And the service life of the door and window is further prolonged.

The utility model discloses a pipe ditch protection device for thermal engineering, which relates to the technical field of thermal engineering auxiliary equipment and comprises a plurality of protection plates, a plurality of openings are fixedly arranged at the tops and the bottoms of the plurality of protection plates, bolts are arranged in the plurality of openings in a threaded manner, the plurality of protection plates are fixedly connected through the bolts, and an elastic cushion is fixedly arranged at the bottom of one of the protection plates. The protection plate is made of high-strength aluminum alloy and provided with the abrasion-resistant and corrosion-resistant coating, the buffering assemblies on the edges of the bottom and the top can effectively absorb and disperse impact of external force and protect a pipe ditch and a pipeline, the heat preservation layer on the inner side can reduce heat loss, heat transmission efficiency is improved, the protection plate can be rapidly connected and detached, and the service life of the protection plate is prolonged. And the construction efficiency is greatly improved.

The invention belongs to the technical field of fan blades, and particularly relates to a high-strength aluminum alloy fan blade integrated forming device and process, and the high-strength aluminum alloy fan blade integrated forming device comprises an aluminum alloy fan blade shaping mold, a bidirectional moving base and a mold vibration mechanism; the aluminum alloy fan blade shaping mold comprises an aluminum alloy fan blade lower mold body and an aluminum alloy fan blade upper mold body, the aluminum alloy fan blade upper mold body is detachably and fixedly connected to the upper side of the aluminum alloy fan blade lower mold body, and a shaping cavity is formed in a combination of the aluminum alloy fan blade lower mold body and the aluminum alloy fan blade upper mold body. The aluminum alloy fan blade lower die is installed on the two-way moving base, and the die vibration mechanism is installed on the aluminum alloy fan blade lower die. According to the aluminum alloy fan blade, bubbles in the fluid-shaped aluminum alloy raw material can be reduced in the integrated forming process of the aluminum alloy fan blade, and the strength of the aluminum alloy fan blade after integrated forming is improved.

The utility model relates to the technical field of integrated welding jigs, in particular to a photovoltaic module integrated welding jig which comprises a copper bottom plate positioning plate, a first groove is formed in the upper surface of the copper bottom plate positioning plate, a copper bottom plate is arranged in the first groove, and a DBC substrate is fixedly arranged on the upper surface of the copper bottom plate. A plurality of contact pins are fixedly arranged on the upper surface of the DBC substrate, and a DBC fixing frame is arranged in the first groove. The frame is made of high-strength aluminum alloy materials, the overall strength of the jig is guaranteed, the weight is reduced, the jig is convenient to operate and move, the frame has enough rigidity, the stability of the jig in the welding process can be guaranteed, a plurality of contact pins are used for assisting a part to be welded, and the welding efficiency is improved. And the position of the to-be-welded part on the jig can be ensured to be accurate, so that the welding efficiency and the production quality and consistency of the photovoltaic module are improved.

The invention discloses a preparation process of a high-strength aluminum alloy for an electric vehicle pedal, and relates to the technical field of aluminum alloy preparation, and the high-strength aluminum alloy comprises the following components in parts by weight: 85.0 to 92.5 parts of Al, 3.5 to 5.8 parts of Cu, 0.8 to 1.6 parts of Si, 1.2 to 2.4 parts of Mg, 0.5 to 1.2 parts of Zn, 0.3 to 0.9 part of Mn, 0.15 to 0.45 part of Cr, 0.08 to 0.25 part of Ti, 0.05 to 0.18 part of Zr and 0.03 to 0.12 part of rare earth elements. Through addition of rare earth elements and a complete preparation process including gradient temperature control smelting, electromagnetic stirring refining, composite modification treatment, solid solution and aging treatment and the like, the bending strength and the fatigue resistance of the aluminum alloy are enhanced.

The utility model relates to an aluminum core light underwater cable for shallow water, which comprises three aluminum conductors, and a conductor shielding layer, a water-tree-resistant cross-linked polyethylene insulating layer, an insulating shielding layer and a copper strip metal shielding layer are sequentially wrapped outside each conductor to form a wire core; the three wire cores are twisted to form a cable core, the cable core is arranged in a waterproof comprehensive sheath which is formed by longitudinally wrapping and extruding an aluminum-plastic composite belt, and soft fillers are arranged between the waterproof comprehensive sheath and the cable core and in a gap in the middle of the cable core; a plurality of high-strength aluminum alloy wires are uniformly fixed on the outer surface of the waterproof comprehensive sheath by coating asphalt to form an armor layer, and the outer sheath is arranged outside the armor layer. The utility model further comprises a production device for manufacturing the cable. According to the utility model, the aluminum conductor is adopted to reduce weight and cost; the cable can operate in a humid environment or water for a long time by adopting the water-tree-resistant cross-linked polyethylene insulating material, so that the service life of the cable is prolonged; and the aluminum-plastic composite tape waterproof comprehensive sheath is adopted, so that the waterproof and anti-corrosion capabilities are strong, and the weight and the cost of the cable are reduced.

The utility model relates to the technical field of ship hydraulic control equipment, in particular to a modularized integrated control valve group for a ship hydraulic clutch. The device comprises a main valve group, a first functional module valve group, a second functional module valve group, a third functional module valve group and a top plate are sequentially arranged above the main valve group, and the first functional module valve group and the third functional module valve group are the same in internal structure; according to the utility model, a modularized sandwich valve group framework is adopted, and standardized valve block units are superposed on the basis of a main oil inlet valve block, so that a main valve block does not need to be redesigned when a module is newly added, a control loop can be expanded only by increasing or decreasing the standardized units, and the volume and complexity of multi-path control are remarkably reduced; aiming at a ship high-salt-fog environment, the valve block base material is made of high-strength aluminum alloy and adopts the zinc-plated nickel alloy composite coating, the surface corrosion resistance is improved through the electroplating and passivation dual process, and meanwhile, the salt-fog-resistant elastic sealing ring is used, so that the leakage risk caused by corrosion is reduced.

The utility model discloses a kind of tensile composite cable in the technical field of cable, and cable is composed of torsion-resistant combination core, conductor, nanometer composite insulation layer, shielding structure layer and protective sleeve. Torsion-resistant combination core is woven by high-carbon steel wire, glass fiber and kevlar fiber according to 1:1:1 proportion three-dimensionally, provides high strength and torsion resistance ability;Conductor is high-strength aluminum alloy wire with conductive ceramic coating on surface, is double helix winding outside torsion-resistant combination core, enhances flexibility and tensile property;Nanometer composite insulation layer is composed of nanometer silicon dioxide, nanometer aluminum oxide and high-molecular polymer base material, is equipped with tiny air passage inside, improves insulation performance and heat dissipation effect;Shielding structure layer includes tinned copper wire braiding shielding layer and aluminum-plastic composite film shielding layer, and the two are connected closely by conductive glue, effectively shield electromagnetic interference. Overall design significantly improves the tensile, torsion resistance, environmental resistance and shielding level of cable, meets the use demand under complex environment.

The application relates to the technical field of cables, and discloses a high-strength aluminum alloy medium-voltage power cable. The high-strength aluminum alloy medium-voltage power cable comprises, from inside to outside, an aluminum alloy conductor and an insulation layer; the insulation layer is a cross-linked polyethylene nano-composite insulation material, and the raw material components of the cross-linked polyethylene nano-composite insulation material comprise, in terms of weight fractions, 100 parts of a base resin, 3-8 parts of core-shell-star compounded inorganic nano-filler, 0.5-1 part of an antioxidant and 1.5-2.5 parts of a cross-linking agent; the core-shell-star compounded inorganic nano-filler is silica-coated nano-aluminum nitride grafted with polyhedral oligomeric silsesquioxane, and is denoted as AlN@SiO2-POSS. In the application, the inorganic nano-composite filler is used to improve the thermal conductivity of the cable insulation layer, and meanwhile, the dielectric strength, mechanical tensile property and heat aging resistance of the cable are improved.

The utility model discloses an A column lower inner reinforcing plate which comprises a reinforcing plate body, the reinforcing plate body is arranged to be a multi-layer composite plate, the multi-layer composite plate comprises an outer-layer steel plate, a high-strength aluminum alloy plate and an inner-layer steel plate, and the high-strength aluminum alloy plate is arranged between the outer-layer steel plate and the inner-layer steel plate. A plurality of groups of lightening holes are formed in the side surface of the reinforcing plate body, and an auxiliary component for conveniently positioning and mounting the reinforcing plate body is arranged on the side surface of the reinforcing plate body; the auxiliary assembly comprises a positioning block and a positioning module used for positioning the reinforcing plate body and the positioning block, and the positioning block is fixedly installed on the side face of the A column. The reinforcing plate body is arranged to be a multi-layer composite plate, high-strength support is provided through the outer-layer steel plate and the inner-layer steel plate, the overall weight is reduced while the strength is guaranteed through the high-strength aluminum alloy plate, meanwhile, the overall weight is further reduced through the multiple sets of lightening holes, and therefore the structural strength of the lower portion of the A column is improved, and the service life of the lower portion of the A column is prolonged. And the fuel economy of the vehicle is prevented from being influenced by overweight vehicle body.

The application discloses a high-strength aluminum alloy profile for a crash beam and a preparation method thereof. The aluminum alloy profile comprises, in percentage by mass, Si: 0.42%-0.62%; Fe: 0.15%-0.30%; Cu: 0.18%-0.35%; Mn: <=0.15%; Mg: 0.87%-1.07%; Cr: 0.06%-0.24%; Zn: <=0.10%; Ti: 0.02%-0.14%; La-based rare earth: 0.05%-0.15%; Ge: 0.02%-0.05%; and the balance of Al and inevitable impurities. The application optimizes the components of the 6-series aluminum alloy, reduces the content of Fe and Zn, introduces a small amount of Ge, Ge can replace part of Si, compared with Si, forms a composite phase with higher density and better coherence with the matrix, and improves the strength of the aluminum alloy. In addition, Sc is also introduced, and Sc and Ge have a good synergistic effect with other elements, which significantly improves the strength and toughness of the aluminum alloy.

The invention discloses automobile high-strength aluminum alloy frame welding equipment, which relates to the technical field of welding, and comprises a conveying platform for conveying an automobile frame; the fixed stand columns are fixed to the two sides of the conveying platform. The sliding adjusting plate is arranged on the fixed stand column in a sliding mode; the welding device is rotationally arranged on the sliding adjusting plate; the control connecting assembly is rotationally arranged on the welding device; the pretreatment device is rotationally arranged on one side of the control connecting assembly; and the cooling device is rotationally arranged on the other side of the control connecting assembly and is symmetrical to the pretreatment device relative to the control connecting assembly. Welding positions of different positions are cleaned before welding, controllable cooling treatment is carried out after welding, crack generation and expansion are effectively reduced, and the welding quality and the structural strength are improved.

The invention relates to the technical field of aluminum alloy, and provides a preparation method of a medium-high-strength aluminum alloy component, which comprises the following steps: S1, heating an initial aluminum alloy profile at a temperature T2, and preserving heat, so that a GP region of the aluminum alloy profile is re-dissolved in a matrix; a base body of the initial aluminum alloy profile comprises a GP area; s2, the aluminum alloy profile obtained in the step S1 is subjected to hot forming; and S3, the aluminum alloy profile obtained in the step S2 is cooled, and then aging treatment is conducted. According to the preparation method of the medium-high-strength aluminum alloy component, on the premise that the strength of the aluminum alloy component is guaranteed, the plasticity of the aluminum alloy component in the complex shape forming stage is remarkably improved, meanwhile, deformation caused by heat treatment is reduced to the maximum extent, the technological process is simplified, and the production cost is reduced.

The invention discloses a high-strength corrosion-resistant overhead insulated wire and a manufacturing process and application thereof, and belongs to the technical field of power transmission. The wire adopts a multi-layer structure design of a high-strength aluminum alloy conductor core (containing 0.3%-0.8% of copper, 0.5%-1.2% of magnesium and 0.2%-0.6% of silicon), a cross-linked polyethylene inner insulating layer, an aramid fiber and stainless steel wire net composite reinforcing layer (the layer number ratio is 2: 1), and a corrosion-resistant outer insulating layer (a surface microscopic concave-convex structure) added with nano zinc oxide / titanium dioxide filler (3%-5%); the problems that a traditional wire is insufficient in strength and prone to corrosion and aging are solved in cooperation with electromagnetic stirring smelting, precise temperature control extrusion and other processes. Experiments show that the tensile strength of the lead reaches 350-420 MPa, the direct-current resistivity is low, the insulation resistance retention rate in the salt mist / acid rain / ultraviolet environment exceeds 92%, the lead is suitable for high-voltage power transmission and medium-voltage power distribution systems, the service life can be remarkably prolonged, and the maintenance cost can be reduced.