40results about How to "Reduce toughness" patented technology

The invention relates to the technical field of epoxy resin, in particular to an epoxy resin composition for high-strength carbon fiber winding and a preparation method thereof.The preparation method of the epoxy resin composition comprises the steps that S1, modified epoxy resin, a compatilizer, a retarder, a defoaming agent and nano filler are added into a reaction kettle and mixed and stirred, and a mixture A is obtained; s2, a composite curing agent is added into the mixture A, stirring and mixing are conducted, and the epoxy resin composition is obtained and has the advantages of being appropriate in viscosity, good in heat resistance, excellent in impact resistance, large in bending strength, small in volume shrinkage rate in the curing process, moderate in gelation time and capable of being wound with carbon fibers conveniently to prepare the composite material.

The invention discloses a composite plate strip for a water cooling plate, which relates to the technical field of aluminum alloy and comprises the following components in parts by weight: 100-120 parts of aluminum, 5-8 parts of manganese, 2-3 parts of silicon, 8-12 parts of rhenium, 5-10 parts of niobium, 12-16 parts of chromium, 2-5 parts of lanthanum, 2.50-3.50 parts of copper, 0.50-1.50 parts of zinc, 0.60-1.50 parts of strontium and 1.20-1.50 parts of titanium. According to the composite plate strip for the water cooling plate, the components of the aluminum alloy are reasonably adjusted, niobium and aluminum are combined, the aluminum alloy has extremely high chemical stability, lanthanum and strontium are added, in the melting process, lanthanum and strontium are fully combined with the aluminum alloy, lanthanum and strontium are matched, and therefore the heat resistance of the aluminum alloy is improved. And a protective oxidation film is formed on the surface of the aluminum alloy, so that oxidation and corrosion of the aluminum alloy can be effectively prevented, and the corrosion resistance of the aluminum alloy is improved.

The invention discloses a manufacturing method of thin-gauge low-yield-ratio Q500qE bridge steel, and belongs to the field of steel manufacturing. The method comprises the steps of component design, casting, heating, rolling, cooling and the like, and finally the required finished steel plate is obtained. The low-temperature impact resistance of the steel plate can be ensured while high strength and low yield ratio of the steel plate are effectively ensured under the condition of low alloy addition. Besides, controlled rolling, cooling and heat treatment processes are combined, the steel plate in the TMCP + T state is obtained, a microstructure with refined ferrite and bainite as main components is obtained in the whole plate thickness, the steel plate has the mechanical property characteristics of high strength, low yield ratio and high toughness, and the low-temperature impact toughness is that the fracture fiber section rate can reach 85% or above at the temperature of-40 DEG C. According to the steel plate, the target performance requirement can be met, the plate shape of the steel plate can be guaranteed, the steel plate has good comprehensive mechanical performance, in addition, the manufacturing cost is low, the carbon content is low, the weldability is greatly improved, and the steel plate has high manufacturability.

The invention provides a method for displaying and evaluating phosphorus segregation of a high-carbon steel wire rod, which comprises the detailed steps of preparing a sample, preparing a phosphorus segregation etching solution, displaying and evaluating the phosphorus segregation of the high-carbon steel wire rod, detecting a standard map and the like. Distilled water and ethyl alcohol are sequentially added, finally FeCl3 and CuCl2 are added, and the mixture needs to be heated to 400 DEG C on a heating plate; in the detection process, the prepared etchant is used for etching a detection sample by adopting a wiping method, an optical microscope is used for observation, the position, with the most serious white band shape, of the longitudinal section of the sample serves as a measurement position, and the grade is evaluated according to the comparison between the percentage of the white linear part and the manufactured standard map. The phosphorus segregation condition of the high-carbon steel wire rod can be clearly displayed, so that the phosphorus segregation detection process of the high-carbon steel wire rod is standardized and normalized, and the method can be widely applied to phosphorus segregation detection of various high-carbon steel wire rods.

The invention discloses a low-temperature cured bi-component epoxy resin conductive adhesive. A component A and a component B are mixed according to a ratio of 1: 1 and then cured at room temperature; the component A at least comprises the following components: novolac epoxy resin, epoxy resin, core-shell toughened epoxy resin, a diluent, a coupling agent, a thixotropic agent and a conductive filler; the component B at least comprises the following components in parts by mass: a curing agent and an accelerant; wherein the core-shell toughened epoxy resin is bisphenol A epoxy resin with uniform nanoscale core-shell particle dispersity; the invention also discloses a preparation method of the low-temperature cured bi-component epoxy resin conductive adhesive. The curing of the conductive adhesive at low temperature or room temperature is realized, the internal reaction degree of the matrix is high, the mechanical strength and conductivity of the conductive adhesive are met at the same time, and effective bonding is realized and relatively good performance is kept after electronic components are cured in application scenes with use temperature requirements.

The invention discloses a steel plate for EH550 ocean engineering and a manufacturing method thereof. The steel comprises the following chemical components in percentage by mass: 0.06%-0.12% of C, 0.10%-0.50% of Si, 1.20%-1.80% of Mn, 0.20%-0.50% of Cr or 0.20%-0.50% of Mo, less than or equal to 0.03% of Nb, 0.02%-0.04% of V, 0.01%-0.03% of Ti, 0.015%-0.045% of Al, less than or equal to 0.015% of P, less than or equal to 0.006% of S and the balance of Fe and inevitable impurities. The thickness of the steel plate is 6-50 mm, the yield strength is not lower than 550 MPa, the uniform elongation is not lower than 10%, the yield ratio is not higher than 0.80, and the impact energy at the temperature of-40 DEG C is not lower than 200 J. And through high-temperature controlled rolling and controlled cooling, a bainite structure with the dislocation density evenly distributed is obtained, and the problems that the steel plate for ocean engineering produced through a traditional quenching and tempering technology is insufficient in even elongation and too high in yield ratio are solved.

This invention relates to the field of polymer material synthesis technology, specifically to a modified PVB resin and its preparation method. The invention introduces a fluorinated acetal monoaldehyde derivative containing fluorine into the PVB resin. This derivative is mixed with n-butyraldehyde and glyoxal, thereby undergoing an acetalization reaction with the 1,3-o-diol structure of the PVB molecular chain, incorporating the fluorinated side link into the PVB molecular chain. Utilizing the high electronegativity and high C-F bond energy of fluorine atoms, it shields against the intrusion of external corrosive media, inhibits oxidative yellowing, and improves weather resistance. Furthermore, the invention introduces glyoxal as a crosslinking agent, containing dialdehyde groups, which can react between adjacent polyvinyl alcohol segments, causing slight crosslinking between the originally linear PVB resin segments, improving the resin's shielding performance, further reducing the intrusion of external corrosive media, and enhancing the stability of the PVB resin.

The utility model discloses a distance adjusting device for ceramic roller spraying. The distance adjusting device comprises a spraying distance adjusting mechanism, a temperature measuring sensor and a master control module, the spraying distance adjusting mechanism is connected with a spraying gun and can adjust the distance between the spraying gun and a workpiece to be coated, and the temperature measuring sensor can measure the temperature of the surface of the workpiece to be coated. The temperature measuring sensor and the spraying distance adjusting mechanism are in signal connection with the master control module. The temperature measuring sensor is provided with a temperature sensor and used for measuring the surface temperature of a coated workpiece, and the master control module can find the situation that the surface temperature of the ceramic roller is too high through the temperature measuring sensor and control the spraying distance adjusting mechanism to adjust the distance between the spraying gun and the coated workpiece. And the surface temperature of the ceramic roller is reduced to a range in which deformation of the ceramic roller and reduction of the toughness of the net wall are not caused.

The invention relates to the technical field of brake disc materials, and discloses a brake disc material prepared from a carbon-ceramic composite material and a processing technology thereof.The processing technology comprises the following steps that phenolic resin, carbon powder, metal oxide, composite carbon fibers and a pore forming agent are evenly mixed and then placed in a mold, and a composite material prefabricated body is obtained through compression molding and cold water demolding; processing the composite material preform to form a carbon-ceramic brake disc rough blank, and then performing carbonization treatment to obtain a carbonized composite material; and mixing the carbonized composite material with silicon powder, carrying out siliconizing treatment, soaking in a protective solution, sintering, taking out, polishing and perforating to obtain the brake disc material prepared from the carbon-ceramic composite material. The composite carbon fiber contains a large number of silicon hydroxyl groups and can be tightly combined with phenolic resin, carbon powder, metal oxide and a pore-forming agent, and the polycarbosilane layer generates a nanoscale silicon carbide phase, so that the mechanical property and wear resistance of the brake disc material prepared from the carbon-ceramic composite material can be improved.

The invention belongs to the technical field of metallurgy, and particularly relates to 590MPa-grade hot galvanizing dual-phase steel and a production method thereof, and the steel comprises the following chemical components in percentage by mass: 0.02%-0.06% of C, 0.01%-0.03% of Si, 0.90%-1.8% of Mn, less than or equal to 0.025% of P, less than or equal to 0.010% of S, 0.005%-0.010% of Al, 0.05%-0.30% of Cr, 0.05%-0.30% of Mo, less than or equal to 0.0060% of O, 0.010%-0.020% of N, and the balance of Fe and inevitable impurities. The method has the advantages that low carbon-silicon-aluminum and high nitrogen are cooperatively regulated and controlled in component design, and in the hot rolling process, premature precipitation of AlN particles in the hot rolling process is effectively inhibited by controlling the low coiling temperature, so that a large amount of nitrogen is reserved in a hot rolled plate in a solid solution state.

The invention discloses high-strength hot rolled steel and a preparation method thereof, and the high-strength hot rolled steel comprises the following components in percentage by mass: 0.06%-0.09% of C, 0.05%-0.15% of Si, 1.8%-2.0% of Mn, less than or equal to 0.015% of P, less than or equal to 0.002% of S, 0.11%-0.145% of Ti, 0.1%-0.2% of Cr, 0.04%-0.05% of Nb, 0.01%-0.02% of V and less than or equal to 0.005% of N. The preparation method comprises the following steps: smelting and casting raw materials to obtain a plate blank; and the plate blank is heated, rolled, cooled, coiled and subjected to slow cooling treatment. Under the condition that molybdenum is completely not contained, the high-toughness hot-rolled steel plate with the thickness being 9-14 mm, the yield strength being larger than or equal to 700 MPa, the tensile strength being larger than or equal to 770 MPa, the percentage elongation after fracture being larger than or equal to 16% and the transverse impact energy being larger than or equal to 70 J at the temperature of-20 DEG C is successfully produced.

The invention relates to a preparation method of a high-strength and high-toughness coating rod type insulator for a high-speed rail contact net, and relates to the field of electrified traffic of high-speed railways. The high-strength and high-toughness coating rod type insulator comprises a porcelain insulator main body and an integrated metal flange body formed by an ETV coating and the porcelain insulator main body, the porcelain insulator main body is prepared by mixing calcined high bauxite, feldspar, kaolin, zirconite, quartz, cordierite, ceramic short fibers, clay and the like, adding the mixture into a ball mill, uniformly mixing to form slurry, sieving to remove iron, squeezing the slurry, pugging the slurry, performing high-pressure vacuum treatment, mechanically pressing to form a blank, cutting, drying, glazing, and firing at a high temperature of 1250 DEG C. The porcelain insulator main body is prepared by the steps of appearance detection, good quality detection and the like. By adopting a zirconium-aluminum composite ceramic matrix preparation technology, the composite material has the characteristics of high density, high strength, good toughness and small dispersity, the bending load tolerance strength is greater than or equal to 25KN / cm < 2 >, the torque load is greater than or equal to 15KN. M, and the composite material can completely meet the technical requirements of use of porcelain insulators in high-voltage power transmission grids of high-speed railways.

The invention relates to a composite solder and a preparation method and application thereof. First, Sn1.0Ag0.5Cu powder is used as a solder matrix powder, and the powder is divided into 5 parts, each of which is recorded as powder A. Ni / Al2O3 powder is premixed with one part of the powder A, and the premixed powder is divided into 4 parts, each of which is recorded as powder B. Another part of the powder A is taken, and it is melted in a crucible, and then another part of the powder B is added, and ultrasonic treatment is performed. After the ultrasonic treatment is completed, another part of the powder A is added and ultrasonic treatment is performed again. According to the above method, powder A and powder B are added alternately in sequence, and ultrasonic treatment is performed after each addition of powder A or powder B. Finally, powder B and powder A are completely added into the crucible to obtain a molten liquid C, and the molten liquid C is quickly cast into a stainless steel mold, cooled and demolded, and a Ni / Al2O3-reinforced Sn1.0Ag0.5Cu composite solder is obtained. The present invention can increase the toughness of the composite solder by premixing, adding Ni / Al2O3 in steps, and then ultrasonically melting and casting.

The invention discloses a biphenyl type polythiol compound and a preparation method and application thereof, the biphenyl type polythiol compound has a structural general formula as follows: # imgabs0 #, R1 and R2 are adjacent substituent groups on a benzene ring, R1 is mercaptopropyl, R2 is mercaptoalkoxy of C2-C18, f1m and f2n are other substituent groups on the benzene ring, and f1m and f2n are different substituent groups on the benzene ring. F1 and f2 are respectively and independently selected from any group except an organic metal group and a nucleophilic group, and m and n are respectively selected from any integer of 0-3. The sulfydryl alkyl and sulfydryl alkoxy ortho-substituted biphenyl type polythiol compound is prepared from the low-cost raw material biphenol, and the preparation method is simple, efficient, high in controllability, low in cost and suitable for batch preparation. When the ortho-substituted biphenyl polythiol compound is used as a curing agent, not only can low-temperature curing of a resin composition be realized, but also the bonding strength, heat and humidity resistance, mechanical property and waterproof property of cured resin can be remarkably improved.

Provided herein is a duplex stainless steel pipe that is high in strength and has excellent abrasion resistance and indentation resistance on inner and outer surfaces of the steel pipe. A method for manufacturing such a stainless steel pipe is also provided. A duplex stainless steel pipe of the present invention has a composition that contains, in mass%, C: 0.005 to 0.150%, Si: 1.0% or less, Mn: 10.0% or less, Cr: 11.5 to 35.0%, Ni: 0.5 to 15.0%, Mo: 0.5 to 6.0%, N: less than 0.400%, and the balance being Fe and incidental impurities, and has a microstructure with a ferritic phase and an austenitic phase, the duplex stainless steel pipe having an axial tensile yield strength of 689 MPa or more, and having an outer surface and an inner surface each having an oxide layer having an average thickness of 1.0 µm or more.

This invention discloses a type of steel for hydropower engineering and its preparation method. The steel comprises the following chemical components: C, Mn, Si, Alt, Nb, V, Ti, Cr, Ni, Mo, Cu, and B. Its yield strength is ≥950 MPa, tensile strength is ≥1000 MPa, and it exhibits excellent load-bearing capacity, meeting the structural material requirements for high-stress conditions in large-scale hydropower projects. Its impact value at -40℃ is ≥200 J, and its aging impact value at -40℃ is ≥200 J, demonstrating excellent low-temperature toughness and aging stability. It exhibits outstanding resistance to low-temperature brittle fracture and long-term service embrittlement, providing strong service safety and durability. It is suitable for critical load-bearing structures in hydropower projects operating in cold, high-stress, and long-term service conditions.

The invention relates to the technical field of food processing, in particular to dried orange peel and Chinese yam soft rice and a preparation technology thereof. In order to improve the health preserving effect of the soft steamed bun, the raw materials and the preparation process of the soft steamed bun are improved, dried tangerine or orange peel and Chinese yam components are added into the raw materials, and during dough preparation, Chinese yam paste is used for replacing part of flour, so that part of Chinese yam flavor can be added to the dough by adding the Chinese yam paste into the dough, and the health preserving effect of the soft steamed bun is improved. Moreover, the bread paste can play a role in partially blanching the bread paste, improve the taste of the bread paste and improve the water-holding and moisture-preserving capability of the paste; in order to avoid reduction of dough toughness, part of vital gluten is also added, so that the dough toughness is improved, and the defect of insufficient bread baking expansion caused by reduction of gluten supporting force due to addition of the Chinese yam paste is overcome; on the basis of the traditional soft European bun stuffing, the pericarpium citri reticulatae powder is added into the soft European bun stuffing, so that the greasy phenomenon caused by excessive sweetness and oil of the traditional stuffing can be effectively improved by adding the pericarpium citri reticulatae powder, and the aftertaste of the soft European bun in the mouth is improved.

The invention discloses intelligent processing equipment for a high polymer material, belongs to the technical field of crushing equipment, and is used for solving the technical problems of slipping and wire drawing during crushing and grinding of polytetrafluoroethylene. The intelligent processing equipment for the high polymer material comprises a crushing mechanism, an embrittlement mechanism and a grinding mechanism; a pair of crushing rollers is rotationally connected into the first shell, and the space in the first shell is divided into a first cavity and a second cavity through the crushing rollers, wherein the first cavity and the second cavity communicate with each other. The device has the beneficial effects that the phenomenon of wiredrawing is inhibited while the problem of slipping of polytetrafluoroethylene fragments is avoided, and the continuous and efficient crushing process is ensured; a plasma embrittlement and liquid nitrogen freezing embrittlement two-stage embrittlement process is adopted, so that polytetrafluoroethylene particles are easy to break in the grinding stage, a sieve plate and nitrogen micro-positive pressure auxiliary screening are combined, powder with the target particle size can be stably obtained, and the particle size uniformity of the product is remarkably improved.

The utility model discloses a quick shoe lining cutting machine, which relates to the technical field of shoemaking equipment and comprises a bin body, the top of the bin body is fixedly connected with a first hydraulic rod, one end of the first hydraulic rod penetrates through the top of the bin body and is fixedly connected with a sliding connecting seat, and the outer wall of the sliding connecting seat is slidably connected with a sliding sleeve bin. A buffering reset mechanism is arranged between the sliding connecting base and the sliding sleeve bin, the inner side wall of the sliding connecting base is fixedly connected with a pneumatic knocking hammer, and the pneumatic knocking hammer corresponds to the sliding sleeve bin in position. According to the bin body provided by the utility model, on the basis that pressure is applied through continuous knocking to avoid incomplete cutting, materials can be automatically separated from a mold, so that the problem that the materials are incompletely cut when the shoe lining cutting machine faces thicker or harder materials is solved; and the cut-off material is easy to be clamped in the mold.

The invention relates to the technical field of packaging materials, in particular to a bio-based polyamide film for aluminum-plastic film packaging and a preparation method of the bio-based polyamide film. The film comprises a coating layer and a bio-based polyamide base material layer, the coating layer is formed by coating the surface of the bio-based polyamide base material layer with acrylic acid coating liquid, and the acrylic acid coating liquid comprises organic silicon modified acrylic resin, polyurethane microspheres, an aziridine cross-linking agent and water; the bio-based polyamide base material layer is composed of three layers of biaxially oriented bio-based polyamide films, and bio-based PA56 and bio-based PA5X in each layer are formed according to a certain proportion. The bio-based PA56 and the bio-based PA5X are cooperatively used and are matched with the acrylic acid coating liquid, so that the stretching ratio of the thin film is reduced, the strength, the toughness and the wear resistance of the thin film are ensured, the electrolyte resistance is improved, and the high pit flushing property of a flat film method is realized.

The invention discloses a material for producing a low-carbon high-molybdenum stainless steel pipeline and a preparation method of the material, and belongs to the technical field of metal material preparation, and the low-carbon high-molybdenum stainless steel pipeline is made of a low-carbon high-molybdenum stainless steel material. Comprising the following chemical element components in percentage by weight: 0.01-0.02% of carbon (C), 20.0-22.5% of chromium (Cr), 15.0-18.5% of nickel (Ni), 5.5-8.8% of molybdenum (Mo) and the like. The material preparation method comprises the following steps of raw material preparation, smelting, refining, casting, intermediate heat treatment, final heat treatment and cold machining. Wherein the intermediate heat treatment comprises the step of carrying out solution treatment on a material obtained by casting. The invention discloses a low-carbon and high-molybdenum stainless steel material for producing a low-carbon and high-molybdenum stainless steel pipeline, which has more than 5% of molybdenum (Mo) content, and has better corrosion resistance, high-temperature strength and creep resistance. Through solution treatment, the toughness and plasticity of the low-carbon high-molybdenum stainless steel cannot be reduced in the preparation process, and the corrosion resistance cannot be reduced.

The invention discloses self-lubricating flame-retardant epoxy resin for pultrusion of basalt fibers as well as a preparation method and application of the self-lubricating flame-retardant epoxy resin, and relates to the technical field of high polymer materials. The self-lubricating flame-retardant epoxy resin is prepared from the following raw materials in parts by mass: 100 parts of a phenolic aldehyde modified epoxy resin solution, 0.5-2 parts of a silane coupling agent, 2-8 parts of modified graphite powder, 20-30 parts of modified nano aluminum hydroxide, 0.5-1.0 part of a plasticizer, 0.2-0.8 part of an accelerant and 10-15 parts of a diluent. The modified graphite powder and the modified nano aluminum hydroxide are used as inorganic inert fillers to synergistically modify the epoxy resin, so that the basalt fiber pultrusion sectional material has the characteristics of low friction coefficient, good flame retardance, high strength, good toughness and low shrinkage rate, is simple in preparation process and easy for industrial production, and has wide application prospects in the field of basalt fiber pultrusion sectional materials.

The application provides a new type of gasket material for intelligent self-lubricating joint bearings and a preparation method and application thereof, and belongs to the technical field of composite materials, self-lubrication and intelligent monitoring, in particular, the preparation method of the new type of gasket material for intelligent self-lubricating joint bearings comprises the following steps: S1: preparing a conductive synergistic material; S2: preparing a modified performance reinforcing material; S3: preparing a phenolic resin diluent; S4: preparing a conductive modified phenolic resin adhesive film; S5: preparing an insulating modified phenolic resin adhesive film; S6: preparing a pretreated fabric; and S7: preparing a new type of gasket material. The new type of gasket material for intelligent self-lubricating joint bearings prepared by the above method can realize the integration of "material-function", intelligently monitor the wear state of the bearing according to the step change of the electrical conductivity, has the advantages of excellent friction-reducing and wear-resistant performance and high sensitivity, can significantly simplify the structure of the bearing system and reduce the maintenance cost, and is suitable for the fields of aerospace and the like.

The present invention discloses a disposable anti-needle-stick type intravenous indwelling needle, comprising a sleeve, an inner groove is provided on the inner side of the sleeve, a fastening plug is clamped at the bottom of the sleeve, an isolation plug is fixedly installed at the bottom of the fastening plug, a steel needle that penetrates the fastening plug and the isolation plug is slidably inserted into the inner side of the inner groove, and the top of the steel needle extends to the top of the sleeve and is fixedly installed with a fixed needle seat that fits the top surface of the sleeve. The disposable anti-needle-stick type intravenous indwelling needle, by continuing to push the sleeve and the steel under the support of the support plate, sends the catheter into the blood vessel of the infusion recipient, and the support plate can play an effective auxiliary support effect, effectively alleviate the slight tremor of medical staff during the advancement, greatly improve the stability of the steel needle during the advancement process, effectively reduce the damage caused by the steel needle to the infusion recipient, and make the intravenous indwelling needle smooth.

The invention discloses high-hardness nickel-based composite powder for laser cladding and a laser cladding method thereof.The composite powder is composed of 1-4 wt% of nearly-spherical pure aluminum powder and the balance nickel-based high-temperature alloy powder, the average particle size of the nearly-spherical pure aluminum powder is 100-150 microns, the average particle size of the nickel-based high-temperature alloy powder is 75-150 microns, and the nickel-based high-temperature alloy powder is composed of 15-17 wt% of Cr, 2-4 wt% of Fe, 3-4 wt% of B, 1-2 wt% of Si, 0.5-1 wt% of C and the balance Fe. And the balance of Ni. According to the method, the two kinds of powder are evenly mixed through the acoustic resonance mixing technology, molten pool flowing and solidification in laser cladding are changed by regulating and controlling the content of aluminum powder, the crack sensitivity is reduced, and therefore a large-area crack-free cladding layer is obtained, meanwhile, the Cr element in the nickel-based high-temperature alloy powder can react with the B element and the C element so that hard ceramic phase chromium boride and chromium carbide can be separated out, and therefore the large-area crack-free cladding layer can be obtained. And the hardness of the cladding layer is greatly improved.

The invention discloses a novel TiC-based high-wear-resistance composite material and a manufacturing method thereof, and relates to the technical field of wear-resistant alloy, the novel TiC-based high-wear-resistance composite material comprises the following raw materials by weight: 50-90 wt% of multi-element solid solution strengthened TiC-N i-Ta-Nb-Mo-V-Cr powder, 0.1-3.0 wt% of reduced molybdenum powder, 5.0-13.0 wt% of 70 ferromanganese powder, 0.1-3.0 wt% of reduced Ni powder, 0.1-3.0 wt% of carbon black, and the balance of iron powder. According to the TiC-based high-wear-resistance composite material manufactured through the scheme, multiple raw materials are combined to form multi-element solid solution strengthening, complete development of crystal grains can be promoted, the technical indexes of compactness, strength, hardness, toughness, impact resistance, wear resistance and the like of the crystal grains can be improved, and the defects that an existing TiC-based alloy is low in hardness, low in strength, poor in toughness, high in porosity, prone to abrasion, poor in wear resistance and the like are overcome.

The application discloses a kind of high-temperature-resistant fiber composite material and preparation process thereof, belong to new material technical field.The application will aluminium salt, zirconium salt, complexing agent of zirconium salt, magnesium chloride hexahydrate and tetraethyl orthosilicate, PVP and PEO are added in water, after mixing, pH is adjusted to 3.5-4.5, obtain spinning precursor sol, the aluminium salt is aluminium chloride hexahydrate, the zirconium salt is at least one of zirconium oxychloride and zirconium nitrate, the sol is drawn and formed to obtain first fiber, the first fiber is dried and is calcined at low temperature, medium temperature and high temperature.Compared with prior art, the application can more uniformly densify composite fiber, guarantee the mechanical properties of composite fiber.

This utility model discloses a portable bamboo furniture frame bending machine, relating to the field of bamboo furniture processing technology. It includes a base, with a conveyor belt fixedly connected to its upper surface. A fixed frame is fixedly connected to the left side of the upper surface of the conveyor belt. Synchronous cylinders are fixedly connected to both sides of the upper surface of the fixed frame. The lower end of each synchronous cylinder passes through the fixed frame and is fixedly connected to a movable frame inside the fixed frame. Heating rollers are evenly distributed and rotatably connected to the inner surface of the movable frame. Slider blocks are fixedly connected to the front, rear, left, and right sides of the outer surface of the movable frame. Compared with existing ordinary bamboo furniture frame bending machines, this portable bamboo furniture frame bending machine can automatically limit and convey the frame, and heat the frame during conveying. It eliminates the need for manual processing of each frame individually; simply placing the frame to be processed on the conveyor belt allows for automatic transport and processing, greatly improving the convenience and efficiency of the process.

The present disclosure is a thermosetting resin composition and the like, the thermosetting resin composition including: a first resin that is a thermosetting resin; and composite particles, wherein the composite particles contain a second resin and an inorganic filler, and an amount of the inorganic filler in a total amount of the second resin and the inorganic filler is from 0.1 to 70 wt.%.

The invention provides high-strength and high-hole-expansion steel. The high-strength and high-hole-expansion steel comprises, by mass, 0.04%-0.12% of carbon, smaller than or equal to 0.1% of silicon, 1.3%-1.7% of manganese, smaller than or equal to 0.002% of sulfur, smaller than or equal to 0.015% of phosphorus, 0.01%-0.03% of niobium, 0.0014%-0.06% of vanadium, 0.1%-0.15% of titanium, 0.08%-0.18% of molybdenum, 0.02%-0.05% of acid-soluble aluminum and smaller than or equal to 0.006% of nitrogen. The high-strength and high-hole-expansion steel prepared by the preparation method disclosed by the invention has relatively good hole expansion property while considering the strength, and is high in practicability and worthy of popularization.