30results about How to "Lightweight advantage is obvious" patented technology

The invention discloses an AlSiLi phase aging strengthening type low-density aluminum alloy and a preparation method thereof, and belongs to the technical field of nonferrous metal preparation and processing. The aluminum alloy comprises the following basic components in percentage by weight: 0.01%-1.0% of Si, 0.01%-1.0% of Li and the balance of Al, and at least one of the following elements in percentage by mass: 0.01-1.0% of Mg, Ca, Sr, Ti, B, Cu, Zn, Mn, Ag, Sc, Zr, Fe, Cr and Ge can be further added; the microstructure of the aluminum alloy is characterized in that AlSiLi precipitated phases with the size smaller than 30 nm are dispersed and distributed in an aging peak state aluminum matrix, and a remarkable aging strengthening effect is achieved. The preparation method comprises the steps of die casting, high-temperature solid solution treatment and aging heat treatment, or casting, high-temperature solid solution, plastic deformation and aging heat treatment, or atomization powder preparation, 3D printing and aging heat treatment. According to the aluminum alloy, the room-temperature yield strength is 90-380 MPa, the tensile strength is 150-550 MPa, the ductility is not lower than 2%, the density is lower than that of pure aluminum, and the aluminum alloy has the advantages of light weight and high strength and can be used for preparing aircraft crankcases, cylinder covers, vehicle bodies, containers and the like.

The invention relates to the technical field of metal materials, in particular to an Al2Y particle and carbon nano tube hybrid reinforced ultra-light magnesium-lithium-based composite material and a preparation method thereof. The magnesium-lithium-based composite material comprises the following components of, by weight, 5-20wt.% of micron-scale Al2Y particles, 1-5wt.% of nano-scale Al2Y particles, 0.5-3wt.% of a surface-nickel-plated carbon nano tube, 11-25wt.% of Li, and the balance Mg, and the total amount of impurity elements of Si, Fe, Cu and Ni is less than 0.02wt.%. The preparation method comprises the three steps of pre-treatment of the micron /nano-scale Al2Y particles, pre-treatment of the carbon nano tube and smelting. According to the composite material and the preparation method thereof, a beta-Li single-phase ultra-light magnesium lithium alloy is used as a matrix, and reinforcing phases with lower density are selected, so that the obtained magnesium-lithium-based composite material still has the excellent light-weight advantage; and the micron/nano-scale Al2Y particles and the carbon nano tube are used as reinforcing phases, so that different functions of the reinforcing phases of different types and scales in the reinforcement aspect are exerted, the cooperative reinforcement effect is achieved by utilizing hybrid reinforcement, the reinforcement effect is farhigher than that of a traditional reinforcing phase reinforced magnesium-lithium-based composite material of a single type and a single scale.

The invention provides a sandwiched composite material for top skirt plates and floors of passenger cars. The sandwiched composite material comprises an upper aluminum plate, glass fiber reinforced thermoplastic and a lower aluminum plate which are arranged sequentially from top to bottom. The glass fiber reinforced thermoplastic is bonded with the upper aluminum plate and the lower aluminum plate by polyethylene film through hot melting, so that the symmetrically-structured high-strength sandwiched composite material for skirt plates and the floors of passenger cars is formed. When used for top skirt plates, the sandwiched composite material is 2.5-5 mm in thickness and 1200-2000 g/m<2> in surface density; when used for floors, the sandwiched composite material is 6-15 mm in thickness and 5000-8000 g/m<2> in surface density. The sandwiched composite material for top skirt plates and the floors of passenger cars has the advantages that the VOCs (volatile organic compounds) content conforms to national standards specified for environment-friendly composite materials; the sandwiched composite material is low in surface density and has remarkable lightweight advantage.

The invention discloses a thin-strip continuous casting high-performance 6XXX aluminum alloy plate strip and a preparation method thereof, the aluminum alloy plate strip comprises the following components in percentage by mass: 0.5-1.5% of Si, 0.1-2.0% of Mg, 0.1-1.0% of Fe, 0.05-0.5% of Mn, 0.02-0.2% of Cu, 0.01-0.08% of Ti, 0.001-0.008% of B and the balance of Al and other inevitable impurities, the content of a single impurity is less than or equal to 0.05%, and the content of total impurities is less than or equal to 0.15%. According to the preparation method, semisolid treatment is combined with a twin-roll thin-strip continuous casting process, and compared with an existing 6XXX aluminum alloy, the strength of the prepared 6XXX aluminum alloy plate strip is improved by 20% or above, and the formability is improved by 30% or above; and compared with a steel plate for an automobile, the weight is reduced by more than 40% easily. The produced aluminum alloy plate strip is a second-generation ABS aluminum alloy product, is widely applied to the field of automobiles, particularly can be used for automobile engine covering parts and can also be used for parts such as fenders, automobile doors, automobile roofs and trunk lids, and a wide space is provided for the automobile industry in the aspects of light weight, energy consumption reduction and fuel economy improvement.

The invention relates to the field of material processing, and provides a photovoltaic support structure and a forming process thereof.The photovoltaic support structure comprises a photovoltaic support, a photovoltaic panel frame and a water guiding gutter.The photovoltaic support is provided with a photovoltaic panel, and the four edges of the photovoltaic panel are embedded in the photovoltaic panel frame; the photovoltaic panel frame and the photovoltaic support are formed by integrally-formed ultrahigh-strength steel rollers in a pressing mode. The high-strength steel lightweight manufacturing technology is adopted, the weight of the product is reduced by 30-40%, and the strength is improved by 20-30%. The light weight advantage is very obvious, the unit comprehensive manufacturing cost is lower than that of a common profile, and compared with the common profile, the high cost performance advantage is achieved; the photovoltaic panel frame is of a complex closed structure, the steel belt is formed at a time through multiple times of rolling, and the steel belt is closed through the self-closing technology; the surfaces of the materials of the photovoltaic panel frame and the photovoltaic support are subjected to aluminum-magnesium-zinc coating treatment, the corrosion resistance meets the requirement that no red rust exists within 600 hours, and the tensile strength reaches 400-1200 Mpa.

The invention relates to a preparation method of a novel 7XXX aluminum alloy thin strip with high performance by jet casting, which comprises the following steps of: 1) smelting according to the following chemical components in percentage by weight: 4.8 to 6.3 percent of Zn, 1.6 to 2.5 percent of Mg, 1.6 to 2.5 percent of Cu, 0.1 to 0.15 percent of Zr and the balance of Al and other inevitable impurities; the single impurity content is less than or equal to 0.1%, and the total impurity content is less than or equal to 0.2 (2) nano-particle enhancement; 3) spray deposition and continuous casting; 4) cooling; 5) primary hot rolling; (6) cooling and secondary hot rolling; (7) coiling; and 8) post-processing. Compared with an existing 7XXX aluminum alloy, the 7XXX aluminum alloy thin strip cast and rolled through the spray deposition combined double-roller thin strip cast rolling technology has the advantages that the strength is improved by 25% or above, and the ductility is improved by 35% or above; compared with a steel plate, the weight is reduced by 50% or more.

The invention discloses a longitudinal-beam-free middle floor assembly structure. The structure comprises a middle floor left side edge beam, a middle floor right side edge beam, a middle floor frontcross beam, a middle floor rear cross beam, a middle floor and a plurality of edge beam connecting plug-in pieces, and the middle floor comprises a middle floor front section plate, a middle floor middle section plate and a middle floor rear section plate. The front ends and the rear ends of the middle floor left side edge beam and the middle floor right side edge beam are connected with a plurality of edge beam connecting inserting pieces respectively, and the middle floor front cross beam and the middle floor rear cross beam are parallel to each other and connected between the middle floor left side edge beam and the middle floor right side edge beam. A mounting frame for mounting the middle floor front section plate, the middle floor middle section plate and the middle floor rear section plate is formed between the middle floor left side edge beam and the middle floor right side edge beam and between the middle floor front cross beam and the middle floor rear cross beam. The middlefloor assembly structure is light in overall weight, high in light weight advantage, good in side impact safety and high in practicability, and the bending and torsion resistance of the middle floor is effectively improved.

The invention discloses a manufacturing method and a manufacturing production line of a closed type refrigerator car heat preservation compartment plate. The manufacturing method comprises the steps of compartment plate mold forming; forming a gel coat layer; molding the resin glass fiber structure layer; and mold closing, pressure maintaining, foaming and injection molding. According to the invention, the spraying of the profiling mold is combined with the foaming injection molding matched process, so that the profiling forming of the high-precision heat-insulating compartment plate is realized, the assembly precision of the heat-insulating compartment plate is improved, and the assembly difficulty of the heat-insulating compartment plate is reduced. The laminated composite technology combining spraying and foaming is adopted, the requirements for composite stability and structural strength can be met without adhesives, meanwhile, the laminated structure is improved, the material cost and the composite forming technology cost are reduced, and the formed heat preservation compartment plate is obvious in light weight advantage and easy to transport, carry and assemble. The preparation method is simple, reasonable and ingenious in step, and can meet the automatic circulating flow production requirement of the thermal insulation carriage plate by being matched with a manufacturing production line, so that the production efficiency is greatly improved, the production period is shortened, and the product uniformity and the qualification rate are guaranteed.

The invention relates to a jet cast rolling high-performance 7XXX aluminum alloy thin strip and a preparation method thereof, the aluminum alloy thin strip comprises the following components in percentage by mass: 4.8-6.3% of Zn, 1.6-2.5% of Mg, 1.6-2.5% of Cu, 0.1-0.15% of Zr, 0.01-0.08% of Ti, 0.001-0.008% of B, and the balance of Al and other inevitable impurities, the content of a single impurity is less than or equal to 0.1%, and the content of total impurities is less than or equal to 0.2%. Compared with an existing 7XXX aluminum alloy, the 7XXX aluminum alloy thin strip prepared through the spray deposition and double-roller thin strip cast rolling combined technology has the advantages that the strength is higher by 20% or above, and the ductility is higher by 30% or above; compared with a steel plate, the weight is reduced by more than 40%. The produced aluminum alloy thin strip can be widely applied to the field of aerospace, such as various aircraft fuselages, wing beams, cabin wallboards, aircraft high-stress structural parts, aircraft skins, high-strength structural parts in aircraft rockets and the like, and a wide space can be provided for aerospace high strengthening, light weight, energy consumption reduction and fuel economy improvement.

The invention discloses a novel fuel tank support manufactured based on magnesium alloy and a manufacturing process thereof, and relates to the technical field of automobile manufacturing, the novel fuel tank support comprises a magnesium alloy support body, the two side faces of the magnesium alloy support body are both dug inwards to form a plurality of grooves, and reinforcing ribs are formed between the adjacent grooves; the two ends of the magnesium alloy support body are each provided with an insertion hole for a bandage to penetrate through, and the bandage is used for fastening an oil tank. The reinforcing ribs, the inserting holes and the magnesium alloy support body are integrally formed in a die-casting mode. During manufacturing, firstly, magnesium alloy particle materials or magnesium ingots are melted into semi-solid or liquid magnesium alloy, then the semi-solid or liquid magnesium alloy is injected into a forming die of a die casting machine, and finally, the magnesium alloy materials are integrally formed into the magnesium alloy support body through die casting. The problem of light weight of an existing fuel tank support is solved by adopting a magnesium alloy material, meanwhile, a special structural design is adopted, the defect that the physical strength of the magnesium alloy material is poorer than that of steel is perfectly avoided, the service life of the novel fuel tank support is greatly prolonged, and the strength of the novel fuel tank support is greatly improved.

The invention discloses a vehicle front lower protection cross beam which is provided with a middle section located in the middle in the length direction of the vehicle front lower protection cross beam, and a strengthening transition section, a strengthening section, a far-end transition section and a far-end section located at the end of the vehicle front lower protection cross beam are sequentially arranged from the middle section to the two ends respectively. The wall thickness of the strengthening section is larger than that of all other sections; the strengthening section, the middle section and the far-end section are each of an equal-thickness structure with the constant wall thickness in the length direction. The strengthening transition section and the far-end transition section are each of a variable-thickness structure, and the wall thickness of the variable-thickness structure changes continuously in the length direction. In addition, the invention further discloses a vehicle front lower protection cross beam assembly and a vehicle. The front lower protection cross beam of the vehicle has the advantages of being simple in structure, capable of being locally strengthened, obvious in light weight advantage and the like, light weight of the vehicle body is achieved under the condition that the safety performance requirement is met, and the front lower protection cross beam has good popularization prospects and application value.

The invention relates to a jet cast rolling high-performance 6XXX aluminum alloy thin strip and a preparation method thereof, the aluminum alloy thin strip comprises the following components in percentage by mass: 0.5-1.5% of Si, 0.1-2.0% of Mg, 0.1-1.0% of Fe, 0.05-0.5% of Mn, 0.02-0.2% of Cu, 0.01-0.08% of Ti, 0.001-0.008% of B, and the balance of Al and other inevitable impurities, the content of a single impurity is less than or equal to 0.05%, and the content of total impurities is less than or equal to 0.15%. Compared with an existing 6XXX aluminum alloy, the 6XXX aluminum alloy thin strip cast and rolled through the spray deposition combined with the double-roller thin strip cast-rolling technology has the advantages that the strength is higher by 30% or above, and the formability is higher by 40% or above; and compared with a steel plate for an automobile, the light weight of more than 50% is easily realized. The aluminum alloy thin strip can be widely applied to the automobile application field, such as automobile engine covering parts, fenders, automobile doors, automobile roofs, trunk lids and other parts, and a wide space is provided for the automobile industry in the aspects of light weight, energy consumption reduction and fuel economy improvement.

The invention discloses a thin-strip continuous casting high-performance 7XXX aluminum alloy thin strip and a preparation method thereof, the aluminum alloy thin strip comprises the following components in percentage by mass: 4.8-6.3% of Zn, 1.6-2.5% of Mg, 1.6-2.5% of Cu, 0.1-0.15% of Zr, 0.01-0.08% of Ti, 0.001-0.008% of B and the balance of Al and other inevitable impurities, the content of a single impurity is less than or equal to 0.1%, and the content of total impurities is less than or equal to 0.2%. The semi-solid treatment is combined with the twin-roll thin strip continuous casting process, the microscopic structure of the prepared aluminum alloy thin strip is a fine isometric crystal matrix structure, and compared with an existing 7XXX aluminum alloy, the strength is improved by 20% or above, and the ductility is improved by 30% or above; compared with a steel plate, more than 40% of light weight is easily realized; the material can be widely applied to the field of aerospace, such as various aircraft fuselages, wing beams, cabin wallboards, aircraft high-stress structural parts, aircraft skins, high-strength structural parts in aircraft rockets and the like, and can provide a wide space for aerospace high reinforcement, light weight, energy consumption reduction and fuel economy improvement.

The invention provides an I-shaped front auxiliary frame with simple and stable structure for an electric vehicle, which comprises an auxiliary frame main body beam, the left end of the auxiliary frame main body beam is connected with a swing arm mounting support left supporting beam, and the right end of the auxiliary frame main body beam is connected with a swing arm mounting support right supporting beam. The swing arm mounting support left supporting beam penetrates through the left end of the auxiliary frame main body beam in the front-back direction, the swing arm mounting support right supporting beam penetrates through the right end of the auxiliary frame main body beam in the front-back direction, and the swing arm mounting support left supporting beam and the swing arm mounting support right supporting beam are parallel. And the swing arm mounting bracket left supporting beam, the auxiliary frame main body beam and the swing arm mounting bracket right supporting beam are arranged in an I shape. The invention has the beneficial effects that the H-shaped structural design is adopted, the structure is simple, the layout is compact, the light weight advantage is obvious, and the cost is low.

The invention relates to a novel particle-reinforced 7XXX aluminum alloy ribbon and a preparation method thereof, the aluminum alloy ribbon comprises the following components in percentage by mass: 4.8-6.3% of Zn, 1.6-2.5% of Mg, 1.6-2.5% of Cu, 0.1-0.15% of Zr, 0.01-0.08% of Ti, 0.001-0.008% of B, and the balance of Al and other inevitable impurities, the content of a single impurity is less than or equal to 0.1%, the content of a total impurity is less than or equal to 0.2%, and the microstructure of the aluminum alloy ribbon is a fine isometric crystal matrix structure and dispersively distributed hard particles. Compared with an existing 7XXX aluminum alloy, the strength of the prepared 7XXX aluminum alloy thin strip is improved by 25% or above, and the ductility is improved by 35% or above by adopting the nanoparticle reinforcement and double-roller thin strip continuous casting technology; compared with a steel plate, the weight is reduced by 50% or more. The material can be widely applied to the field of aerospace, such as various aircraft fuselages, wing beams, cabin wallboards, aircraft high-stress structural parts, aircraft skins, high-strength structural parts in aircraft rockets and the like, and can provide a wide space for aerospace high reinforcement, light weight, energy consumption reduction and fuel economy improvement.

The invention discloses an aluminum profile middle floor cross beam structure. The structure comprises an upper plate body, a lower groove body and a reinforcing rib plate, the upper plate body is arranged to be of a plane plate body structure, and the cross section of the lower groove body is in a door shape and comprises a horizontal plate and two side face supporting plates. The two side face supporting plates are located at the two ends of the horizontal plate, one end of each side face supporting plate is perpendicular to the horizontal plate, the other end of each side face supporting plate is perpendicularly fixed to the lower side face of the upper plate body, a supporting cavity is defined by the upper plate body and the lower groove body, and the reinforcing rib plate is supported in the supporting cavity and is perpendicular to the upper plate body. The aluminum profile middle floor beam structure is simple in production process and high in production efficiency, better sidecollision safety is guaranteed, and light weight is better, so the practicability is high.

The invention relates to a preparation method of a particle-reinforced novel 7XXX aluminum alloy thin strip, which comprises the following steps of: 1) smelting according to the following chemical components in percentage by weight: 4.8 to 6.3 percent of Zn, 1.6 to 2.5 percent of Mg, 1.6 to 2.5 percent of Cu, 0.1 to 0.15 percent of Zr and the balance of Al and other inevitable impurities; the single impurity content is less than or equal to 0.1%, and the total impurity content is less than or equal to 0.2 (2) nano-particle enhancement; 3) continuous casting; 4) cooling; 5) primary hot rolling; (6) cooling and secondary hot rolling; (7) coiling; and 8) post-processing. According to the preparation method, the 7XXX aluminum alloy thin strip is prepared by combining nanoparticle reinforcement with a double-roller thin strip continuous casting process, and compared with an existing 7XXX aluminum alloy, the strength of the obtained aluminum alloy thin strip is higher than 20%, and the ductility is higher than 30%; and compared with a steel plate, the weight can be easily reduced by more than 40%.

The invention relates to the technical field of material preparation, in particular to a preparation method of an all-polyolefin bulletproof composite material. Comprising the following steps: S1, preparing raw materials; s2, plasticizing the raw materials; s3, composite forming; s4, cooling; s5, carrying out post-treatment; s6, spreading the yarn; and S7, cutting application: after the prepared all-polyolefin unidirectional film is cut by a certain size, orthogonally overlapping a certain number of layers at 0/90 degrees, and molding in a heating mold pressing manner to obtain the all-polyolefin bulletproof composite material. The problem that a conventional UHMWPE fiber bulletproof composite material is low in bulletproof performance due to the fact that the interface cohesiveness between the PE fiber and the heterogeneous resin matrix is insufficient is solved, and the composite material is lower in density and more prominent in light weight advantage.