216results about "Superstructures" patented technology

The invention discloses an Al-Mg-Zn aluminum alloy plate with excellent strong plasticity and light weight characteristics as well as a preparation method and application of the Al-Mg-Zn aluminum alloy plate. The alloy comprises the following components in percentage by mass: 5.0%-5.5% of Mg, 1.5%-2.0% of Zn, 0.4%-0.5% of Mn, 0.1%-0.3% of Cu, 0.15%-0.25% of Sc, 0.1%-0.15% of Zr, 0.05%-0.15% of Ag, less than or equal to 0.1% of impurities and the balance of Al. The density is not more than 2.63 g / cm < 3 >, the tensile strength is not less than 470 MPa, and the ductility is not less than 23%. The preparation method comprises the steps of high-purity raw material smelting and casting, two-stage homogenization, hot rolling, intermediate annealing, cold rolling, solid solution treatment and single-stage aging. Wherein the total pressing amount of hot rolling is 80-85%, the total pressing amount of cold rolling is 20-35%, and the single-stage aging time is 120-140 DEG C * 16-24 h. The microstructure of the alloy is characterized in that the average size of dispersed AlSc particles is smaller than or equal to 100 nm, the area fraction of deformed grains is larger than or equal to 70%, the average size of nanometer beta-AlMg and T-Mg (Al, Zn) composite precipitated phases is smaller than or equal to 20 nm, the number density is larger than or equal to 1 * 10 < m >, the area fraction of micron-order second phases is smaller than or equal to 0.5%, and the alloy is only formed by impurity Fe. According to the method, the traditional two-stage aging process is simplified, low density, high strength and high plasticity are synchronously improved, and the method is suitable for large-scale industrial application.

A method of manufacturing a lightweight panel for a vehicle includes a mat fixing operation of manufacturing a first semi-finished product by fixing a mat to each of upper and lower surfaces of a paper honeycomb in a predetermined thickness and a resin spraying operation of manufacturing a second semi-finished product by applying a resin to each of upper and lower surfaces of the first semi-finished product. The method also includes a thermal molding operation of manufacturing a third semi-finished product by thermally molding the second semi-finished product between a heated upper thermal mold and a heated lower thermal mold, a sheet attaching operation of manufacturing a fourth semi-finished product by attaching a sheet molded on an upper surface of the third semi-finished product, and a trimming operation of cutting an unnecessary area of the fourth semi-finished product.

The invention provides low-cost low-alloy steel with the fracture toughness higher than 140 MPa.m < 1 / 2 > and the product of strength and elongation higher than 50 GPa% and a manufacturing method. The microstructure of the steel is as follows: 78-88% of martensite matrix, 10-20% of retained austenite, 1-3% of transition carbide and less than 1% of stable nano precipitated carbide. The steel comprises the following element components in percentage by mass: 0.60 to 0.70 percent of C, 1.25 to 1.75 percent of Mn, 1.25 to 1.75 percent of Si, 0.02 to 0.05 percent of Nb + V and the balance of iron. According to the manufacturing process, at least one time of normalizing treatment is carried out, and then a quenching-distribution-tempering (Q-P-T) heat treatment process is carried out. The mechanical property of the low-alloy steel is improved by designing a proper microstructure fraction, optimizing steel components and adjusting a heat treatment process, so that the fracture toughness of the low-alloy steel is higher than 140 MPa.m < 1 / 2 >, and the product of strength and elongation is higher than 50 GPa%.

The invention relates to an integrated aluminum alloy hollow auxiliary frame and a liquid die forging method thereof. According to the liquid die forging method of the integrated aluminum alloy hollow auxiliary frame, the composite liquid die forging technology combining vertical injection, horizontal pressurization, center pouring and a radiation type multi-ingate outlet is adopted, the inorganic sand core and the preheating core setting technology of the inorganic sand core are combined, and the problems that the sand core is prone to crushing and sand burning is serious are effectively solved; meanwhile, the feeding process is optimized through a multi-stage pressurization curve, so that the smoothness of the inner wall of a cavity of the product reaches 0.2 mm, eutectic silicon is refined to 5-10 microns, the secondary dendritic crystal spacing of alpha dendrites is smaller than 20 microns, the strength deviation of the obtained product is smaller than 15 MPa, the elongation deviation is smaller than 1.5%, X-ray flaw detection reaches the 1-2 level, the process yield is 60-80%, and the product quality is improved. The defects that when the integrated aluminum alloy hollow auxiliary frame is prepared through an existing liquid die forging process, a sand core is prone to being crushed, sand burning is serious, the performance deviation is large, and the process yield is low are successfully overcome.

The invention discloses a magnesium-rare earth alloy with a grinding tooth-shaped interface structure and a preparation method and application thereof, and belongs to the technical field of magnesium alloy material processing. According to the magnesium-rare earth alloy with the meshed tooth-shaped interface structure, a W phase is directionally separated out around the boundary of an Al2 (Gd, Y) phase. The Mg-Gd-Y-Zn-Al alloy serves as a base, a high-modulus Al2 (Gd, Y) phase is introduced, directional precipitation of a W phase around the boundary of the Al2 (Gd, Y) phase is achieved through multiple times of ultrasonic vibration composite multi-axial vibration coupling and secondary solution treatment, the Al2 (Gd, Y) phase with a tooth-shaped microcosmic interface structure is constructed, compatible deformation with a magnesium matrix is achieved, the Al2 (Gd, Y) phase is refined through composite deformation machining, stress concentration is relieved, and the mechanical property of the alloy is improved. And meanwhile, the strength and plasticity of the alloy are improved through torsional deformation of the LPSO phase. Through the formation of the special microstructure, the high strength, the high modulus and the high ductility of the magnesium-rare earth alloy are synchronously improved.

The invention relates to an impact-absorbing structure (2) for use in a motor vehicle, preferably for use in a longitudinal beam of a motor vehicle, having a deformation body (4) which extends along a deformation axis (X) and is deformable along the deformation axis (X) for absorbing impact forces and has a length (L) and a material thickness (D), a first and a second opening (6a, 6b) with a height (H) and a width (B), which are arranged on the deformation body (4) on the end side, the deformation body (4) being formed as a cast component from a metallic material and having a regular wave-shaped outer contour formed along the length (L) thereof.

The application provides a preparation process of a reinforcing beam of an automobile and the reinforcing beam, and the preparation process comprises the following steps: S100, extruding an aluminum alloy raw material to form an aluminum alloy profile structure with a cavity structure; S200, respectively placing first supporting blocks from both ends of the profile structure to middle connecting positions; S300, fixing the first supporting blocks; S400, processing connecting holes and mounting holes on the profile structure, and the middle connecting holes are through holes penetrating through the profile structure and the first supporting blocks; S500, respectively placing second supporting blocks from both ends of the profile structure to end connecting positions; and S600, fixing the second supporting blocks to obtain the reinforcing beam. In the preparation process, the first supporting blocks and the second supporting blocks are respectively placed at the middle connecting positions and the end connecting positions, the supporting blocks can support the corresponding connecting holes or mounting holes, so that the strength of the connecting and fixing positions of the reinforcing beam is improved, the problems of induced deformation and torque attenuation of the connecting and fixing positions of the reinforcing beam during the collision of the automobile are avoided, and the connecting strength is improved.

The application discloses a rare earth high-strength dual-phase steel and a forming method and application thereof, and belongs to the technical field of dual-phase steel. The forming method of the rare earth high-strength dual-phase steel comprises the following steps: converter smelting, LF refining, RH refining, adding cerium iron and yttrium iron at the end of the RH refining or before continuous casting, continuous casting, three-stage hot rolling, cold rolling and three-stage annealing. The rare earth high-strength dual-phase steel has good cold stamping formability, high weldability, no rare earth element segregation, no cracking of steel forming, high yield, and can be directly used to prepare automobile bodies after cold stamping forming at normal temperature. There is no rare earth inclusion or coarse carbon nitride brittle bulk agglomerate on the surface layer of the weld, the rare earth element is in a dispersed distribution state, has excellent dispersion strengthening effect, the weld is not prone to cracking, and the mechanical properties of the weld are superior to those of the base material.

The invention relates to a device for protecting the fuel tank (3) of a motor vehicle in the event of a rear impact. The invention consists in the fact that said protection device comprises a first part forming a protective shield (71) having two opposite edges (711, 712) which are intended for securing the protective device to the underside of the vehicle, the protective shield (71) comprising at least one arch-shaped structural element (713) extending between the two edges (711, 712) of the protective shield (71), the device further comprising a controlled-deformation second part (722) extending along one (712) of the the securing edges of the protective shield (72). Application to vehicles with hybrid power units.

A method for manufacturing a plastic web includes a step of hot extrusion of thermoplastic particles. The thermoplastic particles comprise polyolefin particles that are selected from: thermoplastic polyolefin (TPO) particles; thermoplastic vulcanized polyolefin (TPV) particles; thermoplastic elastomer polyolefin (TPE) particles; and a mixture of all or some of these particles. A quantity of polyolefin particles is between 50% and 96% by weight, relative to a total weight of thermoplastic particles, the polyolefin particles being at least partially derived from recycled materials.

An exemplary damped sheet metal motor vehicle component formed from a single stamping operation includes a base layer, a viscoelastic polymer layer, and a constraining layer. The base layer is a sheet metal motor vehicle component. The viscoelastic polymer layer is in an expanded condition. The constraining layer is welded to the base layer through the viscoelastic polymer layer prior to the single stamping operation.

A frame member includes a closed cross-section part and a stress concentration part. The closed cross-section part includes a flat part and a ridge part. The flat part has a width of 70.0 mm or less. The stress concentration part is provided in at least one of the flat part and the ridge part. The Vickers hardness of a central portion in a sheet thickness direction of the flat part is 350 Hv or more. The standard deviation ratio is more than 1.0, and the standard deviation ratio is obtained by dividing the standard deviation of the frequency distribution of the Vickers hardness of a near-surface portion of the flat part by the standard deviation of the frequency distribution of the Vickers hardness of the central portion in the sheet thickness direction of the flat part.

Disclosed herein is a method (100) for forming a structural element (200) for a vehicle, comprising: arranging (102) a plurality of thin-walled tubes (2) into clusters (3), the thin-walled tubes having an inner surface (21) and an outer surface (22); providing (104) a support to the inner surface of the thin walled tube; and overmolding (106) a material (4) to at least a portion of the outer surface of the thin walled tube, thereby bonding the clusters together.

Disclosed herein is a method (100) for forming a vehicle structural element (200), comprising the steps of: (102) arranging a plurality of thin-walled tubes (2) into a cluster (3), wherein the thin-walled tubes have an inner surface (21) and an outer surface (22); (104) providing support to the inner surface of the thin-walled tubes; and (106) overmolding a material (4) onto at least a portion of the outer surface of the thin-walled tubes to thereby join the cluster together.

A shaped body (10) for attachment to a load-bearing support structure (26) of a motor vehicle (12) is provided, comprising a holder (16) for attachment to the support structure (26) and a wooden body (14) fixed in the holder (16). The wooden body (14) is formed by bending into a three-dimensional shape having at least one bending radius (32) in order to at least partially encircle the support structure (26) in the region of the bending radius (32). By encircling the support structure (26) with the bent wooden body (14), the use of renewable raw materials in a motor vehicle (12) can be easily increased without significant design modifications.

The utility model discloses a light-weight pickup truck frame which is made of aluminum alloy and replaces a traditional steel truck frame, light weight is achieved, and meanwhile the structural stability of the light-weight pickup truck frame is guaranteed. Comprising a longitudinal beam assembly, and a front longitudinal beam connecting cross beam assembly, an auxiliary frame rear mounting cross beam, a battery bracket assembly, a first rear plate spring cross beam assembly, a new energy part bracket assembly and a second rear plate spring cross beam assembly which are sequentially arranged on the longitudinal beam assembly from front to back. The auxiliary frame rear installation cross beam assembly comprises an auxiliary frame rear installation cross beam and a first reinforcing rib, and the end of the auxiliary frame rear installation cross beam is connected with the main beam. A through hole is formed in the connecting position of the main beam and the auxiliary frame rear installation cross beam, the end of the auxiliary frame rear installation cross beam is inserted into the through hole of the main beam, and then the auxiliary frame rear installation cross beam is connected with the main beam through welding. An obliquely-arranged first reinforcing rib is connected between the auxiliary frame rear installation beam and the main beam, one end of the first reinforcing rib is welded to the side surface of the auxiliary frame rear installation beam, and the other end of the first reinforcing rib is welded to the side surface of the main beam.

This invention discloses a CFC composite material skeleton, a molding method, and a vehicle reinforcement skeleton, relating to the field of CFC composite material technology. It includes a CFC skeleton body, SNS covering grooves formed on the CFC skeleton body, and SNS foam filling the SNS covering grooves. The CFC skeleton body is adapted to be installed in the cavity of an automotive sheet metal. The SNS foam can foam under the electrophoretic heating effect of the vehicle. This invention uses a material combination of polyurethane and high-strength, high-modulus glass fiber, molded through an online pultrusion weaving process. The use of continuous fibers gives the skeleton excellent mechanical properties in the 0° and 90° directions, significantly improving the tensile and bending strength of the automotive sheet metal, effectively enhancing the vehicle's resistance to external loads and bending deformation, and solving the problem of poor bending and load-bearing capacity of traditional structures.

The invention relates to a novel carbon fiber composite non-bearing type chassis, and belongs to the technical field of automobiles. The chassis mainly comprises a frame body made of a carbon fiber composite material, an independent suspension arranged in front of the frame and a rear steel plate spring non-independent suspension arranged behind the frame. A composite material adopted by the frame body is composed of glass fiber felt, carbon fibers, unsaturated polyester resin and methyl ethyl ketone peroxide. Optimized layout of the independent suspension is achieved through a lateral installation frame body, a front suspension supporting beam, a thrust rod, a lower swing arm and other components, and the connection rigidity of the rear suspension is improved through specific front and rear lifting lug base assemblies. A special suspension support and a suspension pad are further designed between the frame and the vehicle body to block vibration transmission. Compared with a traditional metal chassis, on the basis that the weight is greatly reduced and the fuel economy is improved, the stress of a suspension mounting point is reduced by 10%, the rigidity of a rear suspension connecting part is improved by 20%, and the vibration noise in a vehicle can be remarkably reduced by 12 dB.

The present invention relates to a one-component thermosetting epoxy resin composition, comprising an epoxy resin A having on average more than one epoxide group per molecule, a latent hardener for epoxy resins,a physical or chemical blowing agent BA and at least one copolymer CP comprising ethylene monomer residues and residues of a first comonomer having one or more functionalities selected from the group consisting of carboxylic acid and salts thereof, carboxylic acid anhydride and epoxide. The epoxy resin adhesive is notable for low VOC content after full curing, especially around 200°C for 30 min.

The utility model provides a C-shaped beam structure. The C-shaped beam structure comprises a C-shaped beam integrally formed in an injection molding mode. The C-shaped beam comprises a non-metal main body framework and a metal framework pre-embedded in the non-metal main body framework; the non-metal main body framework and the metal framework are bonded and connected to form an integrated structure; the non-metal main body framework and the metal framework are frame bodies with rigid supports; and a plurality of weight-reducing reinforcing holes are formed in the non-metal main body framework at intervals. According to the C-shaped beam, the metal framework is pre-buried in the non-metal main body framework, the requirements for the rigidity and strength of the whole structure are met, the deformation amount of the C-shaped beam is reduced, the ground clearance of the C-shaped beam is increased, and meanwhile the bending moment caused by eccentricity during bearing of the C-shaped beam is reduced.

The utility model provides a composite material reinforcing rib structure and an automobile part, and belongs to the technical field of material processing, the composite material reinforcing rib structure comprises a composite material main body, the composite material main body comprises a main body part and a connecting part, the connecting part is connected with one side of the main body part, and a glue reducing weakening groove is formed in the side, where the connecting part is located, of the main body part and is close to the connecting part; and the reinforcing rib part is connected with the connecting part. The composite material has the advantages that the glue reducing weakening groove is formed in the face, where the connecting part is located, of the main body part close to the connecting part, so that when the composite material main body and the reinforcing rib part are formed, shrinkage marks formed on the appearance of the main body part by the reinforcing rib part can be counteracted, appearance quality is not affected by rib positions, the structural design freedom degree is improved, and the service life of the composite material is prolonged. And meanwhile, the process and tool input cost is reduced.

The invention discloses a door impact beam of an automobile formed by an aluminum alloy extruded material and a manufacturing method thereof. A 7000-series aluminum alloy extruded material which contains 7.5 to 9.0 mass% of Zn, 1.3 to 2.0 mass% of Mg, 0.1 to 0.7 mass% of Cu, 0.15 mass% or less of Si, 0.3 mass% or less of Fe, 0.005 to 0.2 mass% of Ti, 0.1 to 0.5 mass% of one or more of Mn, Cr and Zr in a range of 0.3 mass% or less of Mn, 0.25 mass% or less of Cr, and 0.25 mass% or less of Zr, with the remainder being Al and impurities, and which contains an Fe-based crystal having an average Cu content of 5.0 mass% or less.

The present application relates to the technical field of automobile steel, and particularly relates to a high-strength steel with ultrahigh elongation and a preparation method thereof.The high-strength steel with ultrahigh elongation provided by the present application comprises the following components in percentage by mass: C 0.20%-0.25%, Mn 5.0%-7.5%, Al 1.5%-2.5%, P<=0.015%, S<=0.005%, Nb<=0.04%, and the balance of Fe and inevitable impurities.The high-strength steel with ultrahigh elongation provided by the present application can improve the elongation while ensuring high strength;the volume content of residual austenite in the high-strength steel is 15%-25%, so that the high-strength steel has excellent elongation;the tensile strength of the high-strength steel is >980MPa, the yield strength is 650-800MPa, and the elongation is >25%;the high-strength steel is suitable for automobile structural parts with complex drawing forming, and can meet the requirements of automobile lightweight and safety.

The invention belongs to aluminum alloy materials, and particularly relates to a high-strength aluminum alloy material and a preparation method and application thereof. The high-strength aluminum alloy material is prepared from the following components in percentage by mass: 1.00 percent to 1.20 percent of Si, 1.10 percent to 1.30 percent of Mg, 0.90 percent to 1.20 percent of Cu, 0.50 percent to 0.75 percent of Mn, 0.10 percent to 0.30 percent of Cr and 0.05 percent of Zr. The components of the high-strength aluminum alloy material can still be prepared at a higher extrusion speed (such as 10m / min), and the obtained aluminum alloy material has the tensile strength of more than or equal to 410MPa, the yield strength of more than or equal to 390MPa, the ductility of more than or equal to 14.5% and low quenching sensitivity.

It is an aluminum alloy for structural casting applications with increased ductility, comprising 7.5 to 11.5 wt.% silicon, max. 0.24 wt.% manganese, 0.08 to 0.5 wt.% chromium, 0.04 to 0.095 wt.% magnesium, in particular 0.06 to 0.095 wt.% magnesium, 0.205 to 0.5 wt.% iron, in particular 0.22 to 0.5 wt.% iron, in particular 0.255 to 0.5 wt.% iron, 0.01 to 0.5 wt.% copper, in particular 0.205 to 0.5 wt.% copper, in particular 0.22 to 0.5 wt.% copper, max. 0.35 wt.% zinc and 0.004 to 0.15 wt.% titanium, with the remainder being aluminum and unavoidable impurities.

The invention relates to the technical field of aluminum alloy materials, and particularly discloses a semi-solid alloy blank for a new energy automobile chassis structural part and a forming method of the semi-solid alloy blank. The semi-solid alloy blank for the new energy automobile chassis structural component comprises the following raw materials in percentage by mass: 3.0%-13.0% of Si, 0.2%-5.0% of Cu, 0.3%-4.0% of Mg, 0.1%-0.8% of Sc, 0.1%-0.7% of Zr, 0.2%-1.5% of Mn, 0.05%-0.5% of Cr, 0.05%-0.4% of Y and the balance of Al and inevitable impurities. The forming method comprises the following steps: pre-treating after proportioning; refining and removing impurities after alloy smelting; performing ultrasonic vibration treatment; carrying out semi-solid extrusion forming; and carrying out solution treatment. The composition provided by the invention can be used for a new energy automobile chassis structural member, and has the advantages of high strength, good toughness and high-temperature stability.

A metal-resin composite includes: a metal plate including at least one cut-and-raised portion including a cutout hole and a cut-and-raised piece; and a resin material disposed only on one surface side of the metal plate, the resin material cured by burying the cut-and-raised portion, the resin material integrated with the metal plate.

A method for manufacturing a lightweight panel for a vehicle, comprising fixing a mat (22) to each of an upper and a lower surface of a paper honeycomb (P) of a predetermined thickness during a mat fixing operation (S120) to produce a first semi-finished product (20-1), applying a resin (24) to each of the upper and the lower surface of the first semi-finished product (20-1) during a resin spraying operation (S130) to produce a second semi-finished product (20-2), thermoforming the second semi-finished product (20-2) between a heated upper thermoforming tool (53) and a heated lower thermoforming tool (51) during a thermoforming operation (S150) to produce a third semi-finished product (20-3), and attaching a shaped plate (23) to an upper surface of the third semi-finished product (20-3) during a plate attachment operation (S160).to produce a fourth semi-finished product (20-4), and separating an unnecessary area from the fourth semi-finished product (20-4) during a separation process (S170).