25 results about "Ductility" patented technology

The invention concerns a safety component with high mechanical strength and good ductility, moulded in Al-Si alloy consisting (in wt. %) of: Si: 2-11; Mg: 0.3-0.7; Cu: 0.3 0.9; other elements <1 each and <2 in total, the rest being aluminium, and solution heat treated, tempered and hardened resulting in Brinell hardness of more than 125. The invention also concerns a safety component with high mechanical resistance and good ductility, moulded in Al-Si alloy consisting (in wt. %) of: Si: 2-6; Mg: 0.3-0.7; Fe <0.20; other elements <0.3 each and <1 in total; the rest being aluminium; solution heat treated, hardened and tempered resulting in a quality index Q=Rm+log A>485 MPa.

A carbon steel alloy that exhibits the combined properties of high strength, ductility, and corrosion resistance is one whose microstructure contains ferrite regions combined with martensite-austenite regions, with carbide precipitates dispersed in the ferrite regions but without carbide precipitates are any of the interfaces between different phases. The microstructure thus contains of four distinct phases: (1) martensite laths separated by (2) thin films of retained austenite, plus (3) ferrite regions containing (4) carbide precipitates. In certain embodiments, the microstructure further contains carbide-free ferrite regions.

The invention discloses a production process of high-ductility cold-rolled ribbed steel bars. The production process comprises the following steps of: (1) performing primary rolling mill reducing on steel coils wherein the reducing ratio is 0.79 to 0.87; (2) performing secondary rolling mill reducing and nicking at the same time on the steel bars subjected to the primary rolling mill reducing in the step (1), wherein the reducing ratio is 0.59 to 0.88; (3) thermally treating the steel bars subjected to the rolling mill reducing and nicking at the same time in the step (2) for 1 to 3 seconds at the temperature of between 550 and 670 DEG C; and (4) naturally cooling the steel bars thermally treated in the step (3) in the air. After the common I and II-grade steel bars are treated by the process, internal tissues and granularity of the steel bars are changed, so that the strength and the elongation of the steel bars are improved, exceed those of the III-grade steel bars and are close to those of the IV-grade steel bars. Trace elements such as titanium, niobium, vanadium and the like do not need to be added, so the consumption of rare metals is reduced.

Ultrahigh-toughness concrete and a preparing method thereof are disclosed. The concrete is prepared from, by weight, 380-580 parts of cement, 150-170 parts of slag powder, 250-380 parts of fly ash, 200-400 parts of quartz sand, 13-15 parts of bamboo wood phenolic alcohol liquified resin, 13-18 parts of polypropylene resin, 0.5-1.5 parts of carboxymethylcellulose, 23-47 parts of core-shell acrylic acid elastic emulsion, 5-10 parts of a chemical-resistant modifier, 14-18 parts of bamboo fibers, 2.5-8.5 parts of nanometer silicon particles, 7-13 parts of nanometer calcium carbonate, 3-5 parts of anionic polyacrylamide, 3.7-8.3 parts of poly(diallyldimethylammonium chloride), 0.4-1 part of poly(ethylene glycol) acrylate, 20-30 parts of an acrylic emulsion, and the like. The ultrahigh-toughness concrete has high tensile strength, high compressive strength, ultrahigh ductility, good energy consumption capacity and good elastic modulus.

The invention discloses a high-surface-quality hot-galvanized transformation induced plasticity (TRIP) steel plate and a manufacturing method thereof. The hot-galvanized TRIP steel plate is prepared from chemical components in percentage by weight as follows: 0.10%-0.15% of C, 1.20%-1.80% of Mn, less than or equal to 0.030% of P, less than or equal to 0.030% of S, 1.20%-2.40% of Als and the balance of Fe and inevitable impurities. The manufacturing method of the TRIP steel plate comprises the steps as follows: continuous casting steelmaking-hot rolling-cold rolling-continuous annealing and hot galvanizing. The structure form of the hot-galvanized TRIP steel plate prepared with the method includes ferrite, bainite, retained austenite and martensite, the grain size grade ranges from Grade 10.5 to Grade 11, the tensile strength ranges from 640 MPa to 670 MPa, the yield strength ranges from 395 MPa to 465 MPa, the ductility is higher than or equal to 30%, the strength and ductility product can be 23GPa% or above, and the plate has the high surface quality, mechanical performance and corrosion resistance.

The present disclosure relates to a chromium-aluminum binary alloy with excellent corrosion resistance and a method of producing the same, and more particularly to a chromium-aluminum binary alloy with excellent corrosion resistance, including: 1 to 40% by weight of aluminum (Al), the balance of chromium (Cr), and other unavoidable impurities with respect to a total weight of the alloy, and a method of producing a chromium-aluminum binary alloy with excellent corrosion resistance, the method including: (Step 1) mixing and melting a raw material comprising: 1 to 40% by weight of aluminum (Al), the balance of chromium (Cr), and other unavoidable impurities with respect to a total weight of the alloy; and (Step 2) solution treating the alloy melted in Step 1. The chromium-aluminum binary alloy may be easily produced and has ductility, thus being highly applicable as a coating material for a material requiring high-temperature corrosion resistance and wear resistance.

The invention discloses a novel powder metallurgical gear. The novel powder metallurgical gear is prepared from iron powder, copper powder, molybdenum powder, vanadium powder, nickel powder, yttrium powder, aluminum powder, magnesium powder, cobalt powder, lead powder, steel slag powder, cupola slag powder, ferroalloy slag powder, modified tree ash powder, graphite powder, epoxidized butyl stearate, silicone oil, methylcellulose, aluminum stearate, polyethylene glycol, ethylene bisstearamide, stearic acid, carbon fibers, glass fibers, boron nitride, epoxy propoxy propyl trimethoxysilane, silica, manganese sulfide, acrylate, an inhibitor, a binder, an enhancer, a cutting agent, a lubricant, a coupling agent and a dispersion agent. According to the novel powder metallurgical gear, through the specific composition proportion, the novel powder metallurgical gear is even in overall density, high in density, high in ductility and area percentage reduction, good in wear resistance, strength and hardness, high in material utilization rate and suitable for quickly producing high-performance gears on a large scale.

The invention relates to black MC nylon, in particular to high-tenacity black MC nylon provided with black resin oil ink and a preparation method thereof. The black MC nylon of the invention comprises the following components in part by weight: 1,000 parts of nylon monomer, 1.5 to 2.5 parts of basic catalyst, 2 to 5 parts of black resin oil ink and 7 to 9 parts of either toluene di-isocyanate or polyphenyl methane polyisocyanate. Compared with the black MC nylon produced in a way of coloring by using carbon black, the black MC nylon of the invention has more than two times higher impact ductility, 10 to 15 percent higher tensile strength, compression strength and bending strength, and more than two times higher elongation percentage. Therefore, the preparation method successfully solves the difficult problems of bad tenacity and high brittleness in a traditional black MC nylon product.

A lateral force resisting system according to the present disclosure includes a metal lateral force resisting panel and holdowns. A foundation bolt placement template may be used to locate and support the foundation bolts during fabrication of the foundation and to further secure the frame foundation interface. The metal lateral force resisting panel may be formed from a single piece of material and may include a plurality of ductility apertures forming lateral force resisting elements to enable the panel to flex without catastrophic failure. In a hybrid configuration, a wooden structural frame may be combined with the metal structural panel. The structural panel may be subdivided into multiple panes using ductility apertures to tailor the response of the panel to the lateral force load. The holdowns secure the rigid structural panel to the foundation bolts and may be either a folded strap and pin configuration or self-tightening.

The invention relates to an aluminum foil material for air conditioners and a preparation method, which belongs to the technical field of aluminum foil production. %Zn, 0.08% Ti, and the rest are Al. The beneficial effects of the present invention are: on the basis of the existing alloy, the present invention integrates the advantages of the existing air-conditioning foil, cooperates with the process method of the present invention, adopts the hot rolling process, and the produced air-conditioning foil does not have the advantage of high elongation , the thinnest can reach 0.08mm, and high strength, with high deep drawing performance.

The invention discloses an assembly type bolted connection reinforced wood constraint buckling-restrained brace, comprising an inner core, a peripheral constraint part, a steel filler strip and a filling steel plate; the peripheral constraint part is formed by upper laminated wood and lower laminated wood which are connected by bolts, bolt holes are formed in the laminated wood, the steel filter strip is arranged between the upper and lower laminated wood, and the upper and lower laminated wood are connected into a whole by gluing pressurization; the buckling section and the transition section of the inner core are arranged in the peripheral constraint part, the filling steel plate is arranged between the buckling section of the inner core and the laminated wood of the peripheral constraint part, preformed holes are formed in the filling steel plate, a tiny gas is reserved between the buckling section of the inner core and the filling steel plate, and the filling steel plate is connected with the laminated wood of the peripheral constraint part by gluing pressurization. The brace can improve the ductility and the energy dissipating capacity of the support structure of a wood frame, and assembly type production can be carried out on the brace in a factory, so that field construction work load can be reduced, construction progress can be promoted, connection quality can be ensured, and structure installation is facilitated.

A barrier structure is disclosed. The barrier structure is utilized for covering at least a part of an object for protecting the object from gas and water in an external environment and includes a first condensed matter layer and a second condensed matter layer. The first condensed matter layer has a first surface and a second surface. The first surface directly contacts the external environment. The first condensed matter layer is penetrable by at least one type of gas. The second condensed matter layer contacts the second surface. An interface is formed between the second surface of the first condensed matter layer and the second condensed matter layer. The barrier structure has ductility, flexibility, and bendability to cover the object, protect the object from the external environment, and provide the required barrier characteristic against the water or the gas.

The invention provides a novel environment-friendly insulating paint and a preparation method thereof. The novel environment-friendly insulating paint is prepared from the following components: modified epoxy resin, polyamide wax, silica sol, carbon black, titanium dioxide nano-powder, diethylene glycol phenyl ether, talcum powder, tetrabutyl titanate, modified starch, modified diatomite, a thickener, a dispersant, a leveling agent, a defoamer, a surfactant and deionized water. The insulating paint prepared according to the invention has good glossiness, good antistatic ability, good mechanical properties, aging resistance and wear resistance, also has certain flame retardant ability, and has price and environmental protection advantages, strong adhesion, good ductility, high temperature resistance and long service life, can effectively improves the production environment, and is conducive to environment-friendly and pollution-free production and use.

The invention discloses a latticed single-row reinforced Z-shaped sectional concrete column and a making method, and belongs to the field of shock absorption and disaster prevention. The concrete column consists of concrete 1, step grid-like common reinforcing meshes 2, latticed single-row reinforced nets 3 and steel ties 4; a reinforcement framework of the Z-shaped column is Z-shaped, and three latticed single-row reinforced nets 3 are welded to form two Z-shaped limbs; the step grid-like common reinforcing meshes 2 are vertically welded at the ends of the two limbs of the Z-shaped latticed single-row reinforced nets; and the steel ties 4 are vertically welded in the centers of transverse horizontal steel bars of the common reinforcing meshes 2. By adopting single-row reinforcement, the concrete column is simple in construction and low in consumption of steel bars; the reinforcement is formed by welded latticed reinforcement sheets, so that the concrete column is suitable for industrialized production; by adopting latticed reinforcement, oblique web ribs have good shearing resistance, crisp shearing damage of the special-shaped sectional short column can be prevented, and the anti-earthquake ductility is improved; the ends of the section of the column are tightly combined with ecological wallboards or ecological wall bricks by using short steel bars, so that the aims of reinforcing the integrity of a house and promoting the integral anti-earthquake and energy dissipation capacity are fulfilled, and the concrete column is suitable for a rural house.

The invention discloses a relay protection device in a transmission line. The relay protection device comprises a box body, an LED display screen, a function key group, a maintenance interface and a detection hole. The LED display screen is arranged on the right side of the front of the box body. An indication lamp is arranged on the LED display screen. A number of maintenance interfaces are arranged on the upper end of the left side of the front side of the box body. The function key group is arranged below the maintenance interfaces. A relay switch and the detection hole are arranged below the function key group. Four corners of the front side of the box body are fixed by screws. According to the invention, the protection demand of the transmission line is met; the relay protection device can be arranged in a transmission tower for a long time, processes detected data through the GPS network, sends the data to a console, and can carry out on-site maintenance and detection; a front plugboard member facilitates the ductility of each board of the device; and the device has the advantages of high safety, stability and reliability.

The modified asphalt is make up asphalt with higher wax content as substrate, added with macromolecular modifier and cobalt-60 to make irradiation. By adding macromolecular modifier in the asphalt substrate and making irradiation under the condition of irradiation it can make unsaturated bond being in the macromolecular modifier and free-radical produced by wax contained in the asphalt produce cross-linking reaction, so that it can reduce wax content in the asphalt, can obviously raise ductility of asphalt and can improve property of asphalt.