23results about How to "Uniform and stable performance" patented technology

The present application relates to the technical field of rail production process, in particular to a production method for improving wear resistance of channel rail for tram. After universal rolling, compressed air is applied to the channel rail for forced cooling in parts. In the first stage, supersonic air jet cooling is applied to the rail head tread, rail head running edge, rail head left side, rail lip and rail bottom to control the cooling speed of each part. In the second stage, supersonic air jet cooling is continuously applied to each part of the rail to control the cooling speed of each part. In the third stage, subsonic air jet cooling is applied to each part of the rail to control the cooling speed of each part, and then the rail is naturally cooled in air. The quenching effect of the channel rail tread and running edge is improved, the pearlite interlamellar spacing is refined, the rail strength and hardness are improved, and the channel rail has good wear resistance.

The invention discloses a preparation method of high-manganese high-aluminum non-magnetic steel and the high-manganese high-aluminum non-magnetic steel, and the method comprises the following steps: carrying out three-stage heating on a continuous casting slab to obtain a heated slab, the method comprises the following steps: (1) a continuous casting slab is subjected to continuous casting at a preheating section, a heating section and a soaking section, and the heating section and the soaking section meet the following conditions: (1) the width of the continuous casting slab is 950-1250 mm, the highest temperature of the heating section is 1210-1230 DEG C, and the time of the heating section is 60-90 minutes; the temperature of the soaking section is 1190-1210 DEG C, and the time of the soaking section is 30-60 minutes; (2) the width of the continuous casting slab is 1250-1850 mm, the highest temperature of a heating section is 1240-1260 DEG C, the time of the heating section is 60-90 min, the temperature of a soaking section is 1220-1240 DEG C, and the time of the soaking section is 30-60 min; (3) the width of the continuous casting slab ranges from 1850 mm to 2100 mm, the highest temperature of a heating section ranges from 1270 DEG C to 1290 DEG C, the time of the heating section ranges from 60 min to 90 min, the temperature of a soaking section ranges from 1240 DEG C to 1260 DEG C, and the time of the soaking section ranges from 30 min to 60 min; and the heated plate blank is rolled and coiled through a hot continuous rolling mill, and the high-manganese high-aluminum non-magnetic steel is obtained. The method provided by the invention can realize efficient production and stable performance.

The invention relates to the technical field of pipeline cleaning, in particular to powerful dredging gel and a preparation method thereof. The efficient pipeline dredging gel is prepared from the following components in percentage by weight: 1.5 to 15 percent of thickening agent, 2 to 20 percent of alkali metal oxide, 10 to 40 percent of pypocholoride and the balance of solvent, and the thickening agent is prepared by compounding tetradecyl dimethyl amine oxide and sodium metasilicate pentahydrate. According to the invention, through special selection of the thickening agent, the viscosity and the stability of available chlorine are effectively considered, so that the effect of being applied to high-efficiency pipeline dredging for a long storage time is achieved.

The invention belongs to the technical field of preparation of high-temperature alloy strips for aerospace, and particularly relates to a preparation method of a nickel-based wrought high-temperature alloy strip capable of increasing the weight of a single coil. The method comprises the following steps: firstly, carrying out vacuum electron beam welding on a nickel-based wrought superalloy blank plate: before welding, carrying out chemical cleaning on base metal, assembling, clamping, vacuumizing, carrying out segmented electron beam welding, cooling in a vacuum chamber, and optimizing a vacuum electron beam welding process to obtain an excellent welding seam which is well formed and free of pores and cracks; and then the recrystallization grain size of the nickel-based wrought superalloy strip and the welded joint is effectively controlled by selecting the deformation amount of the middle rolling process and the annealing system. The nickel-based wrought superalloy strip prepared through the method is high in single coil weight and good in strip mechanical property, equal-strength matching is achieved between a welded joint and base metal, and the room-temperature mechanical properties of the nickel-based wrought superalloy strip and the welded joint meet the requirements that the yield strength Rp0.2 is not lower than 370 MPa, the tensile strength Rm is not lower than 780 MPa, and the room-temperature ductility A is not lower than 25%.

This invention discloses a low-cost rare earth weathering steel and its production process. The chemical composition and mass percentage of the weathering steel are as follows: C 0.06%~0.12%, Si 0.25%~0.50%, Mn 0.60%~1.00%, P 0.07%~0.12%, S≤0.005%, Cu 0.15%~0.40%, Cr 0.30%~0.50%, Ce 0.002%~0.015%, Alt 0.020%~0.050%, Ti 0.02%~0.08%, N≤0.006%, with the balance being Fe and unavoidable impurities. This weathering steel uses rare earth oxides added to refining slag, and a high-alkalinity, low-oxidizing refining process to improve rare earth yield. Rare earth inclusions and nozzle turbulence are modified through calcium-magnesium composite treatment, achieving rare earth micro-alloying to replace high-alloy additions. While meeting the mechanical properties and high corrosion resistance of 355MPa grade weathering steel, it significantly reduces alloy costs by more than 15% compared to traditional weathering steel. The process flow is compatible with existing production lines and is suitable for industrial mass production.

The invention provides an aerospace structure adhesive based on carbon fibers and a preparation method thereof, and belongs to the technical field of adhesives for aerospace, the dispersity of the carbon fibers in the adhesive is remarkably improved through multiple optimization measures, the performance of the adhesive is uniform and stable, local differences are avoided, and a foundation is laid for performance improvement. The components and the process are optimized, so that the adhesive has excellent bonding performance, the strength is not lower than 20 MPa, the good bonding performance is kept in a specific temperature and pressure environment, and the complex environment requirements of aircrafts are met. As the carbon fibers are good in dispersity, the bonding strength is improved by 30%, the reliability is enhanced, and the carbon fibers are of great significance to the safety of aerospace structures. In addition, the material is resistant to aging, good in toughness, wide and reliable in application and capable of prolonging the service life of an aircraft and reducing the maintenance cost, the performance is not reduced by 10%, and powerful support is provided for aerospace technology development.

The invention relates to a preparation process of a chip tray, which comprises the following steps: S1, proportioning the raw materials of the chip tray in parts by weight: 35-60 parts of polystyrene, 5-25 parts of PPO resin, 5-10 parts of PA resin, 20-30 parts of modified reinforced fibers, 6-8 parts of a toughening agent, 0.1-0.5 part of an antistatic agent, 5-8 parts of a filling agent, 6-10 parts of a compatilizer, 0.5-1 part of a dispersing agent, 5-7 parts of pigment master batch and 4-9 parts of modified glass beads; s2, mixing the raw materials in the step S1, blending, melting and extruding, and cooling to obtain raw material master batch; and S3, preparing a sheet material from the raw material master batch obtained in the S2, heating the sheet material to soften the sheet material, and then sequentially carrying out plastic uptake molding and demolding cutting to obtain the chip tray. The chip tray plastic uptake part has excellent wear resistance and heat resistance, so that the obtained chip tray plastic uptake part can ensure that the chip is not easy to damage in the transportation process in the application process.

A high carbon steel wire rod with a diameter of ≤6.5mm and excellent bending ability, the chemical composition and wt% of which are: under the existing components in the field of this steel type, it is: P≤0.012wt%, S≤0.009wt%, Cu≤0.095wt%; production method: heating the ingot after smelting and pouring into a billet; rolling; spinning; cooling; bundling and packaging after air cooling to room temperature. The present invention provides a kind of wire rod with uniform and stable performance after 15 days of aging under the premise of ensuring mechanical properties, wire rod segregation ≤2.0 level, no obvious softening zone in the cross section, pearlite volume proportion in the metallographic structure is not less than 80%; elongation ≥9.0%, surface reduction ≥35.0%, strength circle difference ≤65MPa, cross-section microhardness extreme difference ≤15%, repeated bending times ≥18.0 times, bending wire breakage during deep processing is less than 0.5 times / kiloton.

The invention belongs to the technical field of high-temperature alloy strip foil preparation, and particularly relates to a nickel-based wrought high-temperature alloy strip foil preparation method and a high-strength plasticity control method thereof. The method is designed according to the rolling process deformation amount and the annealing process of the GH3536 alloy strip foil, so that the rolling process deformation amount is controlled reasonably, the internal organization structure is more uniform, intermediate high-temperature rapid annealing is achieved, coarse internal grains are inhibited, and the grain size and uniformity of the internal organization are adjusted; in the final cold rolling state annealing process step, based on the performance use requirements, vacuum annealing and online continuous annealing processes are designed, and the grain sizes in the foil direction of the GH3536 alloy strips with different thicknesses are controlled through recrystallization annealing, so that the ratio of the thickness to the average grain size is larger than 7. The high-strength and high-plasticity GH3536 alloy strip foil is good in surface quality, the room-temperature mechanical properties can meet the requirements that the yield strength (Rp0.2) is not lower than 310 MPa, the tensile strength (Rm) is not lower than 760 MPa, the room-temperature ductility (A) is not lower than 15%, the performance is uniform and stable, and the requirement for high quality is met.

This invention discloses an integrated waterproofing and sealing construction system for the intersection nodes of municipal underground utility tunnels, belonging to the field of municipal engineering technology. It includes a base, a liquid storage tank fixedly connected to the right side of the upper surface of the base, a support block fixedly connected to the left side of the upper surface of the base, a pump fixedly connected to the upper surface of the liquid storage tank, a pumping pipe fixedly connected to the input end of the pump, and the output end of the pumping pipe extending into the interior of the liquid storage tank. A pipe clamping cavity is fixedly connected to the upper surface of the support block. This construction system achieves efficient utilization of waterproofing and sealing materials through multiple designs, significantly reducing construction costs and material waste. On one hand, the liquid storage tank is equipped with an integrated stirring and wall-mounting cleaning structure. A motor drives a rotating disk to move a rotating column and rod, causing the sliding vertical column to move up and down along the extension cavity. When the sliding block slides along the curved groove, it drives the stirring blades to rotate, continuously stirring the material.

A production method of TMCP hydrogen-doped hydrogen-delivering pipeline steel, characterized in that the chemical composition of the steel contains C=0.03%-0.05%, Si=0.12%-0.30%, Mn=0.95%-1.05%, P≤0.004%, S≤0.0010%, Alt=0.020%-0.045%, Nb=0.040%-0.050%, Ti=0.010%-0.020%, and the balance is Fe and inevitable impurities. The steel plate has good hydrogen environment compatibility performance in addition to the mechanical properties of conventional pipeline steel. In A solution environment, HIC: CSR≤2%, CLR≤15%, CTR≤5%; the tensile strength and the reduction of area of the smooth sample in a 6.3 MPa pure hydrogen environment are greater than 80% and 95% in the air environment; at the same time, in the 6.3 MPa pure hydrogen environment, the K1C of the step compact tension sample is ≥100 MPa·m1 / 2, and the fatigue life is ≥100,000 times.

The present invention relates to an ultra-high strength steel for key equipment of a large hydropower station and a manufacturing method thereof. The chemical composition of the steel is C: 0.06%-0.11%; Si: 0.05%-0.095%; Mn: 0.60%-1.10%; P≤0.008%; S≤0.0015%; Ni: 0.66%-0.79%; Cr: 0.66%-0.80%; Mo: 0.71%-0.90%; V: 0.061%-0. 09%; N: 0.01% ~ 0.03%; Zr: 0.02% ~ 0.05%; Al: 0.02% ~ 0.045%; [O] ≤ 8ppm; [H] ≤ 1.5ppm, the balance is Fe and impurities; the integrated design of composition and manufacturing process ensures the uniform and stable performance of the steel plate; the produced steel plate has ultra-high strength, good plasticity, cold bending performance and welding performance; and the production process is short, the cost is low and the efficiency is high.

The application discloses a kind of high-strength corrugated pipes for drainage and manufacturing method thereof, belong to the technical field of corrugated pipe.The corrugated pipe includes the following weight parts components: 50-75 parts of PVC, 8-15 parts of HPVC, 5-15 parts of HNBR, 5-10 parts of modified filler, 4-8 parts of toughening agent, 1-2 parts of antioxidant, 1-3 parts of heat stabilizer, 0.4-1.1 parts of lubricant.By the raw materials of above-mentioned formula are mixed at high speed, using one-step continuous extrusion molding process, under the temperature parameter and blow pressure of accurate control, plasticizing, extruding, blow setting, traction cutting preparation obtains high-strength corrugated pipe for drainage.Compared with prior art, the high-strength corrugated pipe for drainage of the application solves the problem of poor filler dispersibility and weak interface bonding through multi-level synergistic effect.Testing shows that the corrugated pipe of the application has high ring stiffness and excellent low-temperature impact resistance, long service life, and is especially suitable for high-standard drainage engineering.

The application relates to the technical field of building materials, and discloses a composite wallboard and a preparation method thereof, the method comprising base layer preparation, intermediate functional layer preparation, finishing layer preparation, and compounding and post-processing; the composite wallboard is designed as a base layer, an intermediate functional layer and a finishing layer composite structure, each layer is composed of specific raw materials, the interface bonding and the functional component distribution of each layer material are synergistically optimized, the performance requirements of light weight, high strength, heat preservation and heat insulation, fire resistance and flame resistance can be considered, and the realization of the multifunctional integration of the composite wallboard is ensured; after the interfaces of each layer are treated by plasma, epoxy resin adhesives are coated, the chemical bonding of the interfaces between the layers is enhanced, the interlayer bonding strength is improved, the problem of delamination and falling in the long-term use process is avoided, and the structural integrity of the composite wallboard is ensured.

The application provides a 700MPa high-strength hot-rolled steel, a preparation method and application, the chemical components of the 700MPa high-strength hot-rolled steel include the following in mass fraction: C 0.06~0.09%, Si 0.05~0.15%, Mn 1.8~2.0%, Ti 0.11~0.145%, Cr 0.1~0.2%, Nb 0.04~0.05%, V 0.01~0.02%, P≤0.015%, S≤0.002%, N≤0.005% and the balance of Fe and inevitable impurity elements; the thickness of the 700MPa high-strength hot-rolled steel is 8.99~13.99mm. The preparation method is simple, convenient to operate, does not need to add special equipment, can be adapted to the existing hot-rolling production line, is convenient for large-scale production and has strong industrial application value.

The pipe end additive manufacturing method for the oil and gas conveying steel pipe comprises a welded steel pipe and comprises the steps that S1, the excess weld metal of a steel pipe welding seam is polished, specifically, the steel pipe is placed on a rotating mechanism and rotates at a constant speed, and the excess weld metal of the steel pipe welding seam is polished; s2, the pipe end of the steel pipe is cleaned, specifically, surface oil dirt, rust and oxide are cleaned till the surface has metallic luster; s3, the outer surface of the pipe end of the additive steel pipe is subjected to submerged arc surfacing; and S4, the inner surface and the outer surface of the steel pipe end are machined. The method has the beneficial effects that the end part of the steel pipe is thickened in a submerged arc surfacing additional material mode, the production efficiency is high, the welding quality is good, and the performance of the additional material part is uniform and stable; the pipe end of the surfacing additive thickened steel pipe is turned, so that the roundness, perimeter difference and wall thickness size precision of the pipe end are effectively improved, stress concentration is reduced, and the service safety and reliability of the steel pipe are improved.

The invention relates to the technical field of composite material manufacturing, in particular to a one-time forming method and a mold for producing a foam sandwich structure product from a composite material, epoxy foaming foam and carbon fiber prepreg are used as raw materials, a one-time forming compression molding process is adopted, the integrity and the structural property of the product are improved, and the production efficiency is improved. The performance of each part of the product in the use process is more uniform and stable, the production procedures and operation links are reduced, the production cycle is shortened, and the production efficiency is improved; a one-time forming process is adopted, so that deformation and shrinkage of the material are controlled under a unified process condition, and the dimensional accuracy of a product is better ensured; the foam density is controlled by adjusting the quality of the filled foaming foam, so that the diversified requirements of the composite material on the performance of an interlayer product are met, the designability of the product is enhanced, the diversified performance requirements are met, and a more efficient and high-quality production process is provided for related industries.

The application discloses a composite gel particle plugging agent for plugging steam channeling and preparation and application thereof, and belongs to the technical field of oil field chemistry. The plugging agent has a triple composite structure of "rigid inorganic core-elastic gel shell-oil-soluble surface layer", the elastic gel shell penetrates and is chemically anchored in the porous structure of the core through a crosslinked network, and an organic-inorganic interpenetrating interface is formed. The surface modifier is an oil-soluble polymer. The plugging agent realizes the synergy of rigid support, elastic plugging and flexible selectivity, so that the volume retention rate of the plugging agent is greater than or equal to 85%, the single-particle compressive strength is greater than or equal to 1.5 MPa, and the ratio (selectivity index) of the plugging rate of the water phase channel to the damage rate of the oil phase channel is greater than or equal to 7.0 after the plugging agent is aged for 7 days in a steam environment at 300 DEG C and a salinity of 20*10 4 mg / L, and the technical problems of easy failure, low plugging strength and lack of flexible selectivity of existing plugging agents under extreme high temperature and high salinity are effectively solved.

This invention discloses a method for recycling titanium alloy recycled materials based on hot isostatic pressing (HIP), belonging to the field of titanium metallurgy. The method includes the following steps: First, titanium alloy recycled materials with different oxygen contents are accurately calculated and mixed to obtain a homogeneous mixture. Second, a titanium alloy sheath of the same material as the product is manufactured using 3D printing technology. The pre-mixed powder is then filled into the sheath and compacted. Finally, after vacuuming and sealing, HIP sintering is performed to directly obtain a near-net-shape dense blank under high temperature and pressure. This method optimizes the process flow by combining the full densification capability of 3D-printed sheaths with HIP technology, eliminating the remelting, sheath removal, and numerous machining steps required in traditional recycling processes. It directly produces near-net-shape products from recycled materials, significantly reducing energy consumption, labor time, and raw material loss, achieving a high-value green recycling of titanium alloys.

The invention discloses a military anti-infrared electromagnetic shielding intelligent stealth fabric, and relates to the technical field of intelligent fabrics, the military anti-infrared electromagnetic shielding intelligent stealth fabric comprises an aramid fiber base layer, an electromagnetic shielding layer, an anti-infrared composite layer, a functional layer and an induction adjustment integration module, the outer side of the aramid fiber base layer is provided with the electromagnetic shielding layer, and the electromagnetic shielding layer is arranged on the outer side of the functional layer; an anti-infrared composite layer is arranged on the outer side of the electromagnetic shielding layer, and an induction adjustment integrated module is arranged on the outer side of the aramid fiber base layer. The anti-infrared composite layer is arranged on the outer side of the electromagnetic shielding layer, graphene forms an isolation layer to reflect infrared rays emitted by a human body and effectively guide energy of electromagnetic waves so as to achieve electromagnetic shielding, and diethylene glycol monobutyl ether is beneficial to uniform dispersion of graphene in the water-based acrylic emulsion; the titanium oxide powder with low emissivity and the cobalt ion doping amount of 1.3% is selected for the infrared stealth layer, infrared radiation is reduced, and it is avoided that the infrared stealth layer is found by an infrared detector.

The utility model relates to the technical field of acid liquor injection devices, and discloses a multi-channel parallel operation efficient acid liquor injection device which comprises a base, and an injection mechanism and a stirring mechanism are arranged on the top surface of the base. The first rotating rod and the second rotating rod in the box body are mounted through the first supporting frame and the first frame body which are mounted through bolts, so that acid liquid injection is facilitated, the acid liquid can be effectively replaced according to the same stratum characteristics or acidification requirements through the quick dismounting device, and then fault parts are quickly isolated; a first motor is arranged to drive a first rotating rod and a second rotating rod to rotate, so that a plurality of first stirring blades and second stirring blades in the first rotating rod and the second rotating rod are driven to rotate, acid liquor raw materials in the box body are mixed, meanwhile, a first brush plate and a first filter plate are arranged for filtering and cleaning, and sufficient mixing is achieved; uniform and stable acid liquid performance is ensured, and injection pipelines or stratum pores are prevented from being blocked.

The invention relates to the technical field of materials, in particular to a novel high-performance regenerated polyphenyl plastic building wall material and a preparation method thereof.The novel high-performance regenerated polyphenyl plastic building wall material is prepared from 35-45 parts of waste polyphenyl plastic particles, 3.5-6 parts of 2-hydroxy-3-carboxyl ethyl benzoate propyl ether and 2-4 parts of 4-amino-5-phosphate-2-phenylpyridine, the composite material is prepared from the following components in parts by weight: 12-18 parts of reinforced fibers, 22-28 parts of inorganic filler, 8-12 parts of a flame retardant, 1.5-2.5 parts of a coupling agent and 0.8-1.5 parts of a stabilizer. The regenerated polyphenyl plastic particles in a specific ratio are combined with the glass fibers, and the interface bonding force is improved through a novel organic compound. The tensile strength, the bending strength and the impact strength of the material are remarkably improved, and compared with a traditional regenerated polyphenyl plastic material, the material has obvious advantages.

The invention provides a method for pre-sintering ceramsite by using a chain grate, and relates to the technical field of solid waste recovery, and the method comprises the following steps: crushing solid waste, and granulating to prepare ceramsite green pellets; the ceramsite green pellets are conveyed to a chain grate machine and evenly distributed, then pass through a drying section, a decarburization section and a preheating section and are sintered at the temperature of 850-1000 DEG C, and hot-state pre-sintered ceramsite is obtained; feeding the hot pre-sintered ceramsite into a rotary kiln for high-temperature roasting at the temperature of 1120-1190 DEG C, and cooling in a cooling machine to obtain a ceramsite finished product. According to the method, the cost of recycling solid waste can be effectively reduced, the equipment structure is simple, fuel is diversified, and finished products produced from the rotary kiln can be high-strength ceramsite and can also be used for producing sintered and expanded ceramsite; and the pre-sintered ceramsite can be directly used as a porous ceramsite finished product to be applied to the fields of moisturizing, reclamation, water treatment and the like.