16results about How to "High material strength" patented technology

The utility model discloses an optical fiber connector housing, the optical fiber connector housing is formed by metal plate molding of metal materials, the optical fiber connector housing comprises a front side wall, a first elastic arm, a second elastic arm, a rear side wall, an upper side wall and a bottom wall, the first elastic arm and the second elastic arm are provided with first through holes, and the bottom wall is provided with second through holes. Clamping parts are arranged on the two sides of the rear side wall and penetrate into the first through holes after sheet metal machining, and the clamping parts and the first through holes are fixed in a matched mode. The optical fiber connector made of the metal material is not easy to damage, the fatigue performance is good, the plugging performance is not easy to influence, and the service life of the optical fiber connector made of the metal material is longer; meanwhile, the sheet metal process and stamping are convenient for automatic production and manufacturing; and moreover, the sheet metal process and the stamping process do not need to use heat, so that the heat energy cost and the equipment cost are greatly reduced, and the production and manufacturing cost of the optical fiber connector is greatly reduced.

The invention belongs to the technical field of metal adsorption material preparation, and particularly relates to a preparation method of an attapulgite composite cellulose hydrogel material, which comprises the following steps: (1) uniformly dispersing acid modified attapulgite in water, then adding sodium alginate and polyvinyl alcohol, heating and stirring; (2) adding sodium carboxymethyl cellulose, and continuously stirring to obtain a mixed solution; and (3) injecting the mixed solution into a mold by using an injector, freeze-thawing, freeze-drying, immersing into a CaCl2 solution, cross-linking, washing for multiple times, and freeze-drying again to obtain the attapulgite composite cellulose hydrogel material. Sodium alginate, polyvinyl alcohol, sodium carboxymethyl cellulose and acid modified attapulgite in a proper proportion are matched with a multiple freeze drying method to construct a three-dimensional structure with multiple chemical adsorption, high specific surface area, long diffusion channel and abundant pores, so that the adsorption efficiency and the adsorption capacity of the composite material are improved, and various application requirements are met.

The present application relates to the field of cementitious materials, and in particular to a high-strength cementitious material based on slag and a preparation method thereof. The high-strength cementitious material based on slag, in parts by mass, comprises the following raw materials: 50 to 65 parts of blast furnace slag, 15 to 25 parts of Portland cement, 5 to 12 parts of fly ash, 10 to 20 parts of filler, 0.5 to 1 part of water reducer, 1 to 3 parts of reinforcing agent, 5 to 15 parts of resin material, 6 to 12 parts of sodium bentonite, and 20 to 40 parts of water. The cementitious material prepared in the present application not only has excellent material strength, but also can ensure good waterproofness, corrosion resistance, etc., and can effectively alleviate the problem of poor stability of the cementitious material caused by differences in slag composition, thereby effectively expanding the application environment and field of slag-based cementitious materials, and has very excellent application prospects.

According to the effluent pump for the alkylation device, a gap between a throat shaft sleeve and a throat lining, a gap between a first-stage shell wear ring and a first-stage impeller wear ring, a gap between an interstage shaft sleeve and an interstage lining and a gap between a balance shaft sleeve and a balance sleeve are arranged; and gaps between the secondary shell wear ring and the secondary impeller wear ring are modified, so that heat generated by an overflowing part can be dissipated in an accelerated manner, the situation that equipment is damaged due to the fact that a rotating part and the wear rings are heated to expand and stick to each other due to short-time flow insufficiency is effectively avoided, and meanwhile, the service life of the equipment is prolonged. And the situation that equipment is damaged due to local overheating caused by partial flow channel blockage due to too small interstage gaps of large-particle impurities carried in a medium can be avoided.

The utility model discloses a compaction steel wire rope for a load elevator, and relates to the technical field of elevator ropes. According to the compacted steel wire rope for the load elevator, the internal strength of the steel wire rope can be effectively improved by utilizing the characteristics of extremely high hardness and flexibility of the titanium alloy twisted rope, and the outer side of the outer-layer strand is effectively isolated and protected by utilizing the characteristics of excellent mechanical strength, wear resistance and better corrosion resistance of the nylon material of the protective functional layer; the outer side of the protection function layer is waterproof through the damp-proof function layer, meanwhile, moisture is absorbed by the drying agent, damp-proof of the outer side of the steel wire rope is achieved, and the corrosion resistance of the steel wire rope is improved by utilizing the characteristics of good elasticity and acid and alkali resistance of a rubber material of the corrosion-resistant function layer and the excellent corrosion resistance of aluminum oxide aluminum foil; the strength of the wear-resistant functional layer is increased through the thin steel wires, and the outer side of the corrosion-resistant functional layer is protected by utilizing the characteristics of high strength and low density of a polyethylene fiber material of the wear-resistant functional layer.

The invention relates to the technical field of building structures and foundation design, and discloses a cantilever structure for a side slope, which comprises a main cantilever steel beam and further comprises a reinforced concrete plane foundation arranged on the side slope, one end of the main cantilever steel beam facing the side slope extends into the reinforced concrete plane foundation, and the other end of the main cantilever steel beam faces the side slope. The reinforced concrete plane foundation is fixed in a foundation trench of a side slope through the anti-pulling anchor rod, the main cantilever steel beam and the reinforced concrete plane foundation are connected into a whole through studs arranged on the surface, one end of the anti-pulling anchor rod is inserted into the side slope, and the other end of the anti-pulling anchor rod is connected with the reinforced concrete plane foundation through an internal rib body. Plane foundation steel bars are laid in the reinforced concrete plane foundation. The invention further discloses a construction method of the cantilever structure for the side slope. According to the cantilever structure for the side slope and the construction method of the cantilever structure, the construction problems that the terrain on the side slope is steep and the operation space is narrow are effectively solved.

This invention relates to a method for online crosslinking of hollow bodies using ultraviolet light through blow molding. The molding method includes the following steps: 1) Two preforms are cut into blanks, which are then positioned between two molds and an intermediate mold; an ultraviolet light emitting device is installed on the intermediate mold; 2) The molds are closed, and air is blown into the intermediate mold to preform the preforms; 3) After preforming, ultraviolet light irradiation and fixing of the internal components are performed; 4) The molds are closed, and blown needles on the molds begin blowing air, fusing the two preformed half-shells together along the parting line to form a hollow body, which is then cooled and solidified; 5) The molds are opened, and the product is removed. This method addresses the problems of low strength in plastic fuel tanks, which, in the field of high-pressure fuel tanks, cannot withstand the high fuel vapor pressure generated by temperature differences and prolonged engine inactivity, leading to large deformation of the fuel tank, as well as the high cost of existing plastic high-pressure fuel tank solutions.

The invention discloses a high-temperature fire-resistant heat-insulation carbon fiber composite material which comprises the following components in parts by weight: 35-50 parts of wollastonite-feldspar composite powder, 25-35 parts of modified porous mullite aggregate, 12-20 parts of calcium aluminate cement, 2-8 parts of modified short carbon fibers, 1.5-2.5 parts of sodium dodecyl benzene sulfonate and 1-2 parts of sodium tripolyphosphate. The preparation method comprises the following steps: S1, weighing the wollastonite-feldspar composite powder, the modified porous mullite aggregate, the calcium aluminate cement and the modified short carbon fibers in proportion, and carrying out dry mixing; s2, adding water into sodium dodecyl benzene sulfonate and sodium tripolyphosphate, and stirring to obtain an auxiliary agent aqueous solution; s3, adding the auxiliary agent aqueous solution into the dry powder mixture, and stirring; s4, transferring the slurry into a mold for hydraulic forming; s5, the formed blank is subjected to curing, demolding, drying, high-temperature sintering and cooling, and the high-temperature fire-resistant heat-insulation carbon fiber composite material is obtained. The fire-resistant and heat-insulating carbon fiber composite material produced by the invention can improve the high temperature resistance and compression strength.

The application discloses a titanium gypsum solidification material and an environmental risk assessment method thereof. The titanium gypsum solidification material is obtained by mixing titanium gypsum produced in a titanium dioxide production process and red mud produced in an aluminum production process according to a weight ratio of 1:4-8 to form a titanium gypsum-red mud composite base material, and then performing reinforcing treatment on the titanium gypsum-red mud composite base material to obtain titanium gypsum-red mud composite granular material, and then mixing the titanium gypsum-red mud composite granular material with cement according to a weight ratio of 3:1-5. The titanium gypsum solidification material can realize waste resource utilization of the titanium gypsum and the red mud, realizes waste treatment by waste, and solves the problem of poor concrete compatibility of the titanium gypsum as cement ingredients, and provides a new high-strength material for roadbed material selection.

This invention discloses a polyester material, a heat-shrinkable film, its preparation method, and its applications. The raw materials for preparing the polyester material include a diacid, a diol, a chain extender, a stabilizer, and a catalyst; wherein the diacid comprises: 90 mol%~95 mol% polyterephthalic acid and 5 mol%~10 mol% isophthalic acid; the diol comprises: 65 mol%~78 mol% ethylene glycol, 18 mol%~28 mol% 1,4-cyclohexanediol, and 4 mol%~12 mol% diethylene glycol; the chain extender is 2,2'-(1,3-phenylene)-dioxazoline, added in an amount of 0.2%~0.8% of the total mass of the diol and the diacid; the molar ratio of carboxyl groups to hydroxyl groups in the diacid and the diol is 1:1~1.05. The polyester material of this invention possesses excellent transparency, shrinkage rate, and strength, and has a low initial shrinkage temperature, making it particularly suitable for applications such as heat-shrinkable films. This invention also provides a heat-shrinkable film, as well as the polyester material, a method for preparing the heat-shrinkable film, and their applications.

The invention discloses a high-durability string truss structure. The high-durability string truss structure comprises an upright quadrangular pyramid truss; the invention discloses an external prestress basalt fiber reinforced composite inhaul cable. The supporting rod is shared by the orthogonal prestress inhaul cables, and the surface of the steel structure is coated with the high-toughness concrete. The periphery of the net rack is supported on the steel columns. The tops of the supporting rods are connected with the net rack through bolt balls, and the bottoms of the supporting rods are connected with the prestressed inhaul cables through cast steel cable clamps. And the end part of the inhaul cable is connected with the support through an anchorage device. And the outer surface of the steel skeleton is coated with a layer of high-toughness concrete of which the thickness is not more than 10mm. The structural form provided by the invention is simple and attractive, and meanwhile, the stability and the safety of the structure can be greatly improved; the structure allowable span is large, so that the number of stand columns and foundations is reduced, the construction cost is reduced, and the construction speed is increased; the steel framework and the prestressed basalt fiber reinforced composite inhaul cable are coated with the high-toughness concrete, so that the durability of the structure is effectively improved.

The invention discloses a forged centrifugal pump body structure and a machining device thereof, and relates to the technical field of pump production, the forged centrifugal pump body structure comprises a shell, an end cover and a middle ring, the end cover and the middle ring are forged and formed, the side end of the shell is provided with a liquid flow channel, and the end cover is provided with a liquid drainage channel and first communicating holes which communicate with the liquid drainage channel and are obliquely distributed; a vertical second communicating hole and an inclined third communicating hole are formed in the middle ring, the second communicating hole is communicated with the third communicating hole, the second communicating hole is aligned to the liquid flow channel, and the third communicating hole is aligned to the first communicating hole. The end cover is formed by forging the end cover and the middle ring in a split structure, drilling is carried out inside, casting defects such as air holes, shrinkage cavities, slag holes, cracks and sand holes and inner wall unevenness caused by the casting technology are avoided, the strength and reliability of materials and the part machining qualification rate can be improved, the flatness of the inner wall of a runner is guaranteed, and the service life of the runner is prolonged. The liquid discharging efficiency is improved, and the energy consumption is reduced.

The application discloses a kind of 1.2GPa grade yield strength low-carbon 5Mn medium manganese steel and preparation method thereof, belong to the technical field of changing ferrous metal physical structure.The application uses critical zone annealing, secondary cold rolling, flash annealing+quenching and short-time tempering continuous heat treatment process, so that the medium manganese steel forms multiphase structure composed of deformed ferrite, martensite and residual austenite, effectively activates multiple strengthening mechanism and phase transformation induced plasticity TRIP effect;Flash annealing simultaneously realizes the reservation of high-density defects introduced by secondary cold rolling and the construction of metastable residual austenite, and the yield strength of the medium manganese steel is improved from 681MPa to 1195MPa;The tensile strength is improved from 986MPa to 1648MPa, while maintaining a good elongation of 16.2%.Compared with the conventional flash annealing process, the application method obtains more excellent mechanical properties at a lower annealing temperature, effectively reduces the production cost and helps the industrialization of the process.

The embodiment of the invention provides a high-wear-resistance forged chain for a boiler slag extractor and a friction welding weaving process, a base material is forged after being heated, a forged ring is obtained, and the section of the forged ring is rectangular; cutting the part of the forged ring along the width direction to obtain half rings with the number twice that of the part of the forged ring; the forged rings and the semi-rings are alternately distributed by weaving friction welding equipment, the two semi-rings with opposite openings are subjected to friction welding to form a welding ring, and the forged rings and the welding ring are alternately distributed to form the chain. Compared with traditional direct bending forming of bars, the forged rings have higher material strength and a denser internal organization structure, so that the overall bearing capacity of the chain is improved, and the service life of the chain is prolonged. The sections of the chain rings are rectangular, and the contact positions and the contact parts of the adjacent chain rings are in surface contact, so that the contact area is increased, the contact stress is reduced, the abrasion of a carburized layer can be effectively slowed down, and the service life of the chain is prolonged.

The invention relates to a MgAl2O4-V2AlC composite material ceramic blade for the metallurgical industry and a preparation method of the MgAl2O4-V2AlC composite material ceramic blade, and belongs to the technical field of composite ceramics. The composite material consists of 75 to 90 weight percent of high-purity MgAl2O4 powder and 25 to 10 weight percent of V2AlC powder, and 2 to 10 weight percent of a tempering agent is added. The preparation method comprises the following steps: firstly, mixing a part of the conditioning agent with the MgAl2O4 powder, then sequentially adding the V2AlC powder and the rest of the conditioning agent, and carrying out compression molding and drying after mixing. The green body is subjected to hot isostatic pressing sintering, heat preservation is carried out for 0.5-10 hours at the temperature of 500-900 DEG C, and then heat preservation is carried out for 2-20 hours in the argon atmosphere under the conditions of 1000-1300 DEG C and 10-200 MPa. And after sintering, processing by a numerically controlled lathe to obtain the ceramic blade. By introducing a V2AlC reinforcing phase, the material forms continuous chemical bonding at high temperature and high pressure, and has high strength and fracture toughness. And the metal ceramic characteristic of the V2AlC improves the machining performance, so that the composite material has high density, low heat conductivity and excellent high-temperature strength and wear resistance, and the service life of the composite material is prolonged.

The present invention provides a temperature-adjustable piston pin wear and fatigue coupling test device for a high-power diesel engine. The lower end of the pin seat is fixedly connected to the upper end of the machine platform, a boss is arranged on the upper end of the pin seat, a first through hole is arranged in the middle of the loading rod, the outer periphery of the boss is located in the first through hole, a second through hole is arranged on one side of the loading rod, a third through hole is arranged on the boss, the outer periphery of the piston pin is located in the second through hole and the third through hole respectively, the two ends of the loading rod are slidably connected to a loading cylinder respectively, the pin seat is located between the two loading cylinders, and each loading cylinder is used to provide axial loading to the loading rod. The test device described in the present invention can simulate the load of the maximum explosion pressure working condition and the maximum inertia force working condition of the piston pin, the test device can realize the periodic cycle loading of pressure and tension, and truly reflect the stress condition of the engine piston pin; at the same time, a rapid heater is installed in the middle of the piston pin, and a temperature sensor is installed on the piston pin support seat, which can realize the online detection function of the piston pin temperature in real time.