70results about How to "Good formability" patented technology

This invention discloses a retractable multi-material 3D printing head, which includes an extrusion structure, a first feeding structure, a second feeding structure, and a third feeding structure. By connecting the three feeding structures with one extrusion structure, the extrusion retraction problem in 3D printing of multiple materials is solved. The extrusion structure has three meshing screws, resulting in high mixing efficiency during slurry mixing. Simultaneously, each of the three feeding structures has a screw, allowing for better control of the amount of high-viscosity material added to the extrusion structure. Furthermore, the three screws inside the extrusion structure are specially designed irregular-shaped screws. While achieving conventional mixing, they not only better control the material extrusion amount but also work together with the screws in the feeding structures to achieve slurry retraction when printing high-viscosity materials, improving the forming effect and allowing for a wider solid content range in the formed ceramic slurry.

The present application relates to the technical field of archery equipment, and particularly relates to a metal mixed carbon fiber arrow shaft, which comprises a middle carbon fiber pipe, a head stainless steel pipe, a tail metal pipe and a solid connecting piece, the head stainless steel pipe is arranged at the front end of the middle carbon fiber pipe, the tail metal pipe is arranged at the rear end of the middle carbon fiber pipe, and the two are connected and fixed through the solid connecting piece arranged in the middle carbon fiber pipe, and the outside is wrapped with carbon cloth and is formed through high-temperature curing. The present application adopts a segmented metal mixed structure, replaces a long-size metal inner core with a short metal accessory matched with a carbon fiber main pipe, and greatly reduces the difficulty of straightness control. The thickened head stainless steel pipe effectively bears the impact force, the solid connecting piece is in surface contact with the inner wall of the carbon pipe to disperse the stress, and the service life of the arrow shaft is significantly prolonged. The present application has reasonable structure, low cost and high efficiency, and is suitable for manufacturing various archery equipment.

This invention discloses a polyimide aerogel exhibiting thermotropic liquid crystal behavior and its preparation method, belonging to the field of polymer aerogel materials. The polyimide aerogel exhibiting thermotropic liquid crystal behavior of this invention has a thermal conductivity of 0.07–0.08 W / m² at room temperature. ‑ 1 K ‑1 The thermotropic liquid crystal-like polyimide aerogel is obtained by directional freezing, thermal crosslinking, and imidization of an aqueous solution of polyamic acid. This thermotropic liquid crystal-like polyimide aerogel possesses advantages such as low density, high porosity, relatively high thermal conductivity, and structural stability. It fills the gap in the application of liquid crystal polyimide materials in the aerogel field, improves the thermal conductivity of polyimide aerogels, and provides a foundation for the application of polyimide aerogel materials in the field of high-temperature intelligent deformable materials.

The application discloses a graphene modified aluminum-based composite plate and a preparation method thereof, which comprises the following components in terms of mass ratio: aluminum alloy: ceramic: alkyl magnesium solution: graphene = 4500-5000: 10-50: 1000: 1; the ceramic particle size is 0.05-50 mu m; the aluminum alloy particle size is 10-100 mu m; the composite plate provided by the application has a tensile strength of up to 512 MPa, a yield strength of up to 407 MPa, and a corrosion rate of only 0.9 g / m 2 d, and the preparation method is simple and efficient.

A nonaqueous electrolyte secondary battery includes a first separator, a positive electrode plate, a second separator, and a negative electrode plate, which are overlapped and wound 10 turns or more to form an electrode body. The electrode body has a flat portion in which an outer peripheral surface is flat, and two curved surface portions in which the outer peripheral surfaces are curved, which are arranged at both ends in a first direction of the flat portion. The nonaqueous electrolyte secondary battery includes a winding end tape attached to an outermost peripheral surface of the electrode body, and a positive electrode protection tape adhered to a winding start side end portion on an inner peripheral side of the positive electrode plate. The winding end tape is arranged at one of the two curved surface portions, and the positive electrode protection tape is arranged along the curved surface of the winding start side end portion of the positive electrode plate on one or the other curved surface portion.

The present disclosure relates to a flash butt welding member, a flash butt welding, and a component. An aspect of the present disclosure is to provide a flash butt welding member, a flash butt welding method, and a component.

This invention relates to a glass forming mold. The problem to be solved by this invention is to obtain a glass forming mold with excellent forming performance. The solution is to form a glass forming mold for pressing and forming glass to be formed from glass that meets the following conditions: (1) Young's modulus is above 85 GPa, (2) Glass transition temperature is above 650℃, (3) Average coefficient of thermal expansion between 100℃ and 300℃ is 30 × 10⁻⁶. ‑7 / ℃~80×10 ‑7 / ℃.

The utility model relates to the technical field of water drop wheel push plates, in particular to a lock type safety clutch push rod device which comprises a connecting base. One end of a connecting rod is mounted in the connecting seat, the surface of the connecting rod is sleeved with a mounting disc, the outer side surface of the mounting disc is connected with the clutch push plate through a screw, one end of the metal sheet is arranged in the clutch push plate, and the other end of the metal sheet extends to the outer side of the clutch push plate; two button grooves are formed in the surface of the metal sheet; according to the utility model, the metal sheet is directly embedded into the plastic clutch push plate by adopting an integrated injection molding technology to form a firm integral structure, the risk of loosening of an outgoing line is avoided, the clutch push plate made of a plastic material contributes to reducing the weight and providing good formability, and the clutch button is connected to be the metal sheet, so that the strength and the durability can be remarkably improved, and the service life of the clutch push plate is prolonged. The design not only is compact, high in strength and good in durability, but also improves the space utilization rate.

The application discloses a high-surface-quality 980MPa-grade hot-dip galvanizing DH steel and a preparation method thereof. The main chemical component mass content of the hot-dip galvanizing DH steel is as follows: C: 0.17-0.21%, Si: 0.4-0.7%, Mn: 1.8-2.2%, Nb: 0.01-0.02%, Ti: 0.01-0.02%, Cr: 0.4-0.5%, and Als: 0.14-0.9%. The method adopts low-carbon design and high-dew-point annealing process to produce the hot-dip galvanizing steel plate which meets the low-carbon environmental protection requirement and has high surface quality, so as to meet the urgent needs of the market. The high-dew-point annealing process is a new type of annealing technology, the oxygen partial pressure is increased by increasing the dew point, the Si and Mn element internal oxidation is realized, and thus the plating leakage defect is effectively improved, and the surface smoothness and flatness of the steel plate are improved.

This utility model provides a splicing node for metal and wooden formwork, including a metal formwork, a wooden formwork, a metal square channel component, and timber. The metal formwork includes a splicing part and a connecting part, which are interconnected. The bottom wall of the metal square channel component is connected to the connecting part, and an installation cavity is provided inside the metal square channel, into which the timber is accommodated. The wooden formwork is connected to the timber, and the splicing parts of the wooden formwork and the metal formwork are aligned. This splicing node for metal and wooden formwork, by adding a metal square channel component and timber, achieves a connection between the metal and wooden formwork. This method avoids directly fixing the metal and wooden formwork together with nails, simplifying the connection operation and structure, and resulting in better concrete forming at the joint between the metal and wooden formwork. Using this node, large-scale application of metal formwork can be achieved, reducing the amount of wooden formwork used, increasing the turnover rate of the metal formwork, and comprehensively reducing costs.

The present application belongs to the technical field of preparation of multi-curved surface silicon carbide, and discloses a preparation method of reaction sintering multi-curved surface silicon carbide whole plate, comprising: mixing 100 parts of alpha-SiC powder, 15-20 parts of composite carbon source, 1-2 parts of silicon carbide fiber, 2.3-3.8 parts of dispersing agent, 8-12 parts of water-soluble phenolic resin, 2-4 parts of additive and 42-46 parts of water according to weight parts, pre-dispersing, ball-milling, spray granulating, pressing into multi-curved surface green body; the green body is stacked with graphite support parts and filled with graded silicon particles, and is subjected to step-by-step degreasing and step-by-step reaction sintering under vacuum argon, and then is cooled after temperature control to obtain the product. Through the synergistic effect of formula control of composite carbon source, specific ternary additive and fine sintering process, the technical problem of sintering cracking and cracking of multi-curved surface whole plate is eliminated, and the product density, bending strength and fracture toughness are effectively improved.

The present application relates to a polyarylene sulfide resin composition, a molded article, a method for producing a resin composition, and a method for producing a molded article. A PAS resin molded article having excellent wear resistance and moldability, a PAS resin composition capable of providing the same, and methods for producing the same are provided. More specifically, a polyarylene sulfide resin composition for a sliding member, a molded article containing the same, and methods for producing the same, the polyarylene sulfide resin composition for a sliding member being compounded with 0.01 to 1 parts by mass of an organic crystallization promoter having a melting point of 300°C or higher and an average particle diameter of 100 μm or less, relative to 100 parts by mass of a polyarylene sulfide resin having a V6 viscosity at 300°C of 250 to 3000 Pa·s.

The application discloses a high-strength and high-plasticity ferrite single-phase automobile structure steel and a production method thereof, and chemical components and weight percentage contents of the automobile structure steel are as follows: C 0.03-0.06%, Si 0.3-0.6%, Mn 0.5-0.9%, S less than or equal to 0.006%, Al 0.1-0.25%, Ti 0.10-0.13%, Nb 0.01-0.02%, Mo 0.0001-0.003%, and the balance of Fe and inevitable impurities. The automobile structure steel has a thickness of 2-10 mm, a lower yield strength greater than or equal to 600 MPa, a tensile strength of 700-850 MPa, an elongation greater than or equal to 25%, a hole expansion ratio greater than or equal to 75%, and a difference between transverse and longitudinal yield strengths less than or equal to 30 MPa, and a shearing section cold bending radius is half of the thickness, and a cold bending angle is 180 degrees, so that the hot-rolled steel plate has a single ferrite structure, and a surface layer has a high-ductility ferrite fine-grain layer, the steel plate has excellent forming performance, and meets the requirement of high formability of the steel plate when a vehicle enterprise is lightened.

The application discloses Al-Cu series welding wire and a preparation method and application thereof, and belongs to the technical field of laser welding. The welding wire is prepared according to a designed component distribution ratio of each component including aluminum, aluminum-copper intermediate alloy, aluminum-titanium intermediate alloy, aluminum-magnesium intermediate alloy, aluminum-silicon intermediate alloy, aluminum-manganese intermediate alloy, aluminum-scandium intermediate alloy and aluminum-zirconium intermediate alloy, and each component is smelted and cast to obtain an ingot. The ingot is subjected to multi-stage homogenization treatment, and then is subjected to hot rolling and wire cutting to obtain the welding wire. The welding wire is introduced with trace amounts of Sc, Si, Ti and Zr in a low-cost high-Cu-content weld pool system, the proportion of the equiaxed crystal zone in the weld structure is improved, the weld structure is refined, the mechanical properties matched with the Al-Cu-Li alloy are improved, the content of W hard and brittle phase is reduced through a corresponding process, and the processability and weld performance of the welding wire are effectively ensured.

The invention discloses a plate pre-drawing and dieless mirror image loading composite forming process and a product, and belongs to the technical field of metal component forming and manufacturing. The method is used for solving the problems of cracking, ultra-poor thinning, low dimensional precision and the like in the forming process of the high-strength aluminum alloy thin-wall component with local continuous large-area bulge and local large wall angle characteristics in the aerospace field. According to the method, through two-stage area expansion distribution, the thinning amount of each stage is effectively controlled, and the cracking problem caused by one-time large deformation in a single process is avoided. And mirror images are cooperatively loaded on the local part of the plate to form a three-dimensional stress state, so that the forming limit is improved. And in-mold constraint aging synchronously realizes strengthening and shape righting, and is obviously superior to the traditional process.

This application relates to the field of metallic materials technology, disclosing a highly formable aluminum alloy material, an aluminum alloy sheet, and a method for preparing the same. The aluminum alloy sheet, by mass percentage, comprises: Fe 0.8%~1.2%, Mn 0.4%~0.8%, Zr 0.1%~0.3%, Si 0%~0.05%, Cr 0.1%~0.3%, with the remainder being Al and other unavoidable impurity elements. The total content of Fe and Mn ranges from 1.45% to 1.6%. The method for preparing the aluminum alloy sheet includes: preparing an aluminum alloy melt; continuously casting the aluminum alloy melt to obtain a billet; continuously rolling the billet to obtain a hot-rolled sheet; and performing a first cold rolling on the hot-rolled sheet to obtain the aluminum alloy sheet. This application can improve the strength, plasticity, and deep-drawing performance of the aluminum alloy material, achieve high formability, simplify the process flow, improve efficiency, and reduce energy consumption.

The application provides a 800MPa-grade torsion beam steel and a preparation method, and belongs to the field of steel preparation.The chemical components of the torsion beam steel include:C:0.06%-0.09%, Si>0 and ≤0.6%, Mn:1.5%-2.1%, P≤0.015%, S≤0.003%, Nb:0.01%-0.05%, Ti:0.03%-0.07%, Cr:0.3%-0.7%, Al:0.3%-0.7%, N>0 and ≤0.005%;the internal microstructure of the torsion beam steel includes:≥85% of bainite, 5%-10% of residual austenite, and the rest of ferrite or martensite.Through reasonable design of the chemical components of the steel, the bainite structure containing residual austenite is obtained, the high strength and high forming performance of the raw material are realized, and the high strength and excellent processability of the torsion beam steel are simultaneously considered.

The utility model relates to the technical field of plate bending machines, and provides an anti-springback plate bending machine which comprises a bottom frame, the surface of the bottom frame is detachably connected with a supporting frame, the inner side of the supporting frame is slidably connected with a movable block, the inner side of the movable block is rotatably connected with an upper rotating roller, and the inner side of the supporting frame is rotatably connected with a lower rotating roller. The outer surface of the supporting frame is connected with an anti-rebound structure, and an adjusting structure is connected between the movable block and the supporting frame. The anti-rebound structure comprises a sliding groove formed in the outer surface of the supporting frame, a sliding block is slidably connected to the inner side, corresponding to the sliding groove, of the supporting frame, an electric cylinder is fixedly connected to the position, corresponding to the sliding block, of the outer surface of the supporting frame, an extension rod is fixedly connected to the outer surface of one side of the sliding block, and a positioning column is rotationally connected to the outer surface of the extension rod. By means of the technical scheme, the problems that an existing plate rolling machine limits plates through limiting grooves, rebounding of the plates is mainly achieved at the positions of the two ends of the plates in actual use, and the existing plate rolling machine does not have a good positioning or limiting function at the positions are solved.

The plate multi-point incremental forming numerical control supporting device and the numerical control multi-point incremental forming method belong to the device and method of plate processing technology field, and the plate multi-point incremental forming numerical control supporting device comprises a supporting seat, a limiting seat, a numerical control lifting platform, a movable rod, a floating supporting rod and a floating pressure ring. The numerical control multi-point incremental forming method using the plate multi-point incremental forming numerical control supporting device is controlled by a numerical control machine tool, the lifting of the numerical control lifting platform is controlled, the stroke of the numerical control lifting platform is synchronous with the stroke of the overall up-and-down movement of the plate, the plate is on the floating supporting rod, the plate can be in contact with the top of the floating supporting rod before starting processing, a supporting force is generated on the plate in the forming area, the plate is clamped by the two groups of floating pressure rings, the generated forming NC code is input into the numerical control machine tool, the incremental forming processing is carried out, the floating pressure ring, the floating supporting rod and the forming tool head are synchronous in the movement in the processing process, and the support on the plate is always maintained.

This invention provides an epoxy resin comprising: a glycidyl ether of a biphenol compound (P1) (E1) and a glycidyl ether of a phenolic hydroxyl resin (P2) (E2), wherein the phenolic hydroxyl resin (P2) is reacted with a dihydroxy aromatic compound (α) and an aralkylating agent (β) of general formula (1-1) or (1-2). [In the following general formulas (1-1) and (1-2), X represents any one of a halogen atom, a hydroxyl group, or an alkoxy group. R] 1 Each independently represents either a hydrogen atom or any alkyl group having 1 to 4 carbon atoms. R 2 Each can independently represent a hydrogen atom or a methyl group. Ar 1 This refers to any of the following structural sites: phenyl, naphthyl, having one or more halogen atoms on their aromatic nucleus, aliphatic hydrocarbon group, or alkoxy group.

The invention relates to an outer packaging material for a power storage device and the power storage device. The outer packaging material (1) for power storage devices comprises a polyamide resin layer (2) as an outer layer, a polyolefin resin layer (3) as an inner layer, and an aluminum foil layer (4) disposed between the two layers, the thickness of the outer packaging material (1) for power storage devices is 90 [mu] m or less, the breaking strain energy of the outer packaging material for power storage devices is 60 MJ / m3 or more, and the thickness of the outer packaging material (1) for power storage devices is 90 [mu] m or less. The fracture strain energy is obtained from a tensile stress-strain curve obtained by a tensile test. As a result, it is possible to provide a thin and lightweight outer packaging material for power storage devices, which is capable of ensuring excellent moldability even when molded deep, and which has high strength and excellent impact resistance.

The application provides a kind of ultra-high strength steel for control arm and a preparation method thereof, and belongs to the field of steel preparation.The chemical composition of the ultra-high strength steel includes, by mass fraction: C: 0.05%-0.12%, Si>0 and <0.3%, Mn: 1.0%-2.2%, P≤0.013%, S≤0.002%, Nb: 0.02%-0.06%, Ti: 0.03%-0.15%, Cr: 0.1%-1.0%, Mo: 0.05%-0.3%, N≤0.005%, V: 0.005%-0.1%, Cu: 0.05%-0.3%, B>0 and ≤0.003%, and the balance is Fe and unavoidable impurities.Thereby, the technical problem that the existing ultra-high strength steel is difficult to simultaneously satisfy high formability and high fatigue life is solved.

A martensitic stainless steel sheet for a brake disc rotor, characterized by containing predetermined components and having, in a mother phase, precipitates with a particle size of 2 µm or less and a density of 0.01 to 20 pieces / µm2. The precipitates finely present in hot rolling and hot-rolled sheet annealing improves productivity in hardening, improves temper softening resistance of the steel sheet in use as a component, inhibits cracking in hot stamping, and inhibits reduction in high-temperature strength. Accordingly, the martensitic stainless steel sheet excellent in temper softening resistance, hardenability, formability, and high-temperature strength that is applicable to the disc rotor is provided.

The invention discloses transverse feeding type wood flaking equipment and a flaking method thereof.The transverse feeding type wood flaking equipment comprises a rack, and the rack is placed on the ground; the feeding mechanism is used for transversely feeding wood, the guiding mechanism is used for limiting and guiding the wood, the planing mechanism is used for planing the wood, the feeding mechanism is arranged on one side of the rack, the guiding mechanism is assembled at one end of the feeding mechanism, the planing mechanism is arranged on one side of the feeding mechanism and one side of the guiding mechanism, and the planing mechanism is used for planing the wood. The wood chipping machine has the beneficial effects that the feeding mechanism is arranged to be matched with the guide mechanism, wood can be transversely fed, so that the wood is chipped into pieces in the fiber direction of the wood under the action of the chipping mechanism, produced wood chips are light and thin, waste residues generated in the production process are few, the smoothness of the wood chips is good, and the forming effect of the wood chips is excellent; the feeding mechanism and the guiding mechanism form a surrounding type conveying guiding structure, and the wood is prevented from deviating.

The present invention addresses the problem of providing a high-permeability soft magnetic urethane resin material which has high permeability, excellent moldability and flexibility, and which can be easily produced. The present invention pertains to a curable urethane resin composition containing a polyol (A), a polyisocyanate (B), a phosphoric acid ester (C) represented by general formula (1), and soft magnetic ferrite particles (D) [in general formula (1), R1 represents a hydrogen atom, a C2-20 alkyl group, or a C2-20 alkenyl group, some of the hydrogen atoms in the alkyl group or alkenyl group may be substituted by halogen atoms, and R1 represents a hydrogen atom, a C2-20 alkyl group, or a C2-20 alkenyl group; in the formula, A1O is an alkylene oxy group having 2-3 carbon atoms, n1 represents the average number of moles of A1O added and is a number of 0-15, R2 is a hydrogen atom or-(A2O) n2R3 (R3 is an alkyl group having 2-20 carbon atoms or an alkenyl group having 2-20 carbon atoms, some of the hydrogen atoms in the alkyl group or the alkenyl group may be substituted by halogen atoms, A2O is an alkylene oxy group having 2-3 carbon atoms, and n2 represents the average number of moles of A2O added and is a number of 0-15). ].

Provided is a multilayer container having high transparency after boiling treatment, excellent oxygen barrier properties after retort treatment, and excellent moldability, and a method for producing the same. A multilayer container having: a polyolefin layer containing an acid-modified polyolefin and an acid-unmodified polyolefin; and a polyamide resin layer in contact with the polyolefin layer and containing a polyamide resin, the polyamide resin containing a polyamide resin (a) in which 70 mol% or more of structural units derived from a diamine are derived from m-xylylenediamine, and 30 to 60 mol% of structural units derived from a dicarboxylic acid are derived from an α,ω-linear aliphatic dicarboxylic acid having a carbon number of 4 to 20 and 70 to 40 mol% are derived from isophthalic acid, and the acid-unmodified polyolefin has a melt flow rate of 20 g / 10 min or more, and a temperature X PO is a melting point of the acid-unmodified polyolefin + 65°C.

The present application belongs to the technical field of steel structure bridge construction, and particularly relates to a petal-shaped double-curved-surface special-shaped steel bridge tower and a manufacturing method thereof. The present application is designed to connect a plurality of tower columns to form a whole, which helps to enhance the stability of the petal-shaped double-curved-surface special-shaped steel bridge tower structure, effectively avoids tilting, deformation and other phenomena under the action of earthquakes, strong winds or traffic loads, and further improves the safety of the bridge. The middle parts of the adjacent tower columns are not connected to each other, which helps to manufacture and install in sections during the construction process, simplifies the construction process, effectively reduces the construction difficulty and improves the construction accuracy, and further improves the construction quality of the petal-shaped double-curved-surface special-shaped steel bridge tower. Compared with the manufacturing and construction of the linear steel bridge tower, the present application has the excellent characteristics of good forming effect, fast assembly speed, less investment in manpower and materials, low production cost, high economic benefit, and further improved production efficiency.

The application discloses an air suspension high-forming 5-series aluminum alloy plate strip and a preparation method thereof. The grain size and orientation distribution characteristics of the aluminum alloy plate strip in the thickness direction are as follows: the small-angle grain boundary proportion with an orientation difference range of 2-5 degrees is less than 2%, the large-angle grain boundary proportion with an orientation difference range of 5-180 degrees is greater than or equal to 85%, the rolling texture proportion is less than 15%, and the total texture proportion of typical orientations is less than 50%. The preparation method is as follows: ① melting and semi-continuous casting; ② ingot heating treatment; ③ hot rolling; ④ cold rolling; and ⑤ product annealing. The scheme controls the anisotropy of the 5-series aluminum alloy plate strip for air suspension, and improves the yield of the 5-series aluminum alloy plate strip for air suspension.

This application relates to a 900MPa grade high-strength steel, its preparation method, and its application. The method includes: obtaining a slab with a set chemical composition; heating the slab and controlling the heating process parameters to refine the grains in the slab, followed by hot rolling, cooling, and coiling to obtain a hot-rolled coil; pickling the hot-rolled coil, followed by cold rolling using a reciprocating rolling mode, and controlling the reduction rate of the cold rolling to ensure sufficient recrystallization driving force inside the pickled hot-rolled coil to obtain a cold-hardened coil; continuously and fully annealing the cold-hardened coil, and controlling the process parameters of the soaking section of the continuous full annealing to eliminate the fibrous structure in the microstructure of the cold-hardened coil, followed by leveling to obtain the 900MPa grade high-strength steel. The 900MPa grade high-strength steel prepared by this application has excellent formability.