678 results about "Nickel alloy" patented technology

The invention relates to the technical field of hydraulic test of nickel alloy pipes, and discloses a hydraulic test system for a thin-wall nickel alloy pipe. According to the system, in the axial loading state of the thin-wall nickel alloy pipe, a closed water pressure cavity is established through an annular sealing clamp, and then strain distribution data on the surface of the pipe body is collected through a distributed optical fiber sensor array. And constructing a three-dimensional stress field reconstruction model based on the acquired strain distribution data, calculating an equivalent plastic deformation threshold value of the pipe body under different water pressure gradients, adjusting a water pressure loading curve slope parameter according to the equivalent plastic deformation threshold value, and generating a dynamic water pressure loading instruction. And the high-frequency pressure pulse generator executes the instruction, synchronously triggers the X-ray diffractometer to collect lattice distortion data of the tube body, inputs the data into the material microscopic damage evolution model, and outputs a microscopic defect spatial distribution map. And finally, material constitutive parameters of the three-dimensional stress field reconstruction model are corrected based on the atlas, closed-loop feedback control is formed, and multi-dimensional data acquisition and accurate management and control of the thin-wall nickel alloy pipe hydrostatic test are achieved.

The invention discloses a special composite enamel coating for a chromium-nickel alloy base material and a preparation method of the special composite enamel coating, when the special composite enamel coating structurally comprises one layer, the special composite enamel coating comprises the following components in parts by mass: 40-65 parts of a basic glass phase, 30-55 parts of a high-melting-point ceramic reinforced phase, 2-10 parts of a thermal expansion coefficient regulator and 0.5-5 parts of an interface bonding accelerant. Compared with the prior art, the enamel coating can achieve nearly perfect thermal expansion coefficient matching with a chromium-nickel alloy matrix, a tough chemical bonding interface is formed, the enamel coating can stably work for a long time in the extreme high-temperature environment of 1,100 DEG C or above, and meanwhile the enamel coating has the excellent abrasion resistance, repeated rapid cooling and rapid heating cycle resistance and thermal shock resistance.

The present application relates to high-temperature alloy smelting technical field, specifically relates to a kind of high-aluminum titanium cast nickel-based high-temperature alloy purification smelting method.The pure smelting method, step one, low calcium nickel alloy preparation;Step two, pure smelting: batching and furnace charging, melting period, refining period, alloying period, calcium treatment purification period and casting period;Pure smelting process is carried out in vacuum induction melting furnace, 2 / 3 low calcium nickel alloy is directly loaded into magnesium oxide crucible when furnace charging, and the remaining 1 / 3 low calcium nickel alloy is added in calcium treatment purification period.The present application prepares a kind of component accurately controllable "low calcium nickel alloy" as master alloy by pre-preparation, is added in key smelting stage, solves the problem of calcium element direct addition, realizes the deep deoxidation denitrogenation desulfurization of alloy melt, significantly reduces the oxygen, nitrogen, sulfur impurity content in alloy, to improve the purity and comprehensive mechanical properties of alloy.

The invention is suitable for the technical field of water electrolysis hydrogen production, and provides an alkyne-rich carbon-ruthenium nickel alloy catalyst and a preparation method and application thereof. The preparation method comprises the following steps: simultaneously adding a ruthenium salt solution, a nickel salt solution and an organic molecule solution into an alkyne-enriched carbon dispersion liquid for reaction; and carrying out centrifugation, cleaning and vacuum drying treatment on the reacted mixed solution to obtain the alkyne-rich carbon-ruthenium nickel alloy catalyst. According to the invention, the acetylene-rich carbon-ruthenium nickel alloy catalyst uniformly loaded with ruthenium nickel (RuNi) clusters is successfully prepared. In the performance evaluation of hydrogen production by water electrolysis in a simulated seawater environment, the material shows excellent hydrogen evolution activity as a cathode catalyst. Experimental results show that under the applied potential of-0.6 V (relative to a reversible hydrogen electrode, RHE), the absolute value of the current density can reach 0.847 A cm <-2 > to 0.896 A cm <-2 >. The invention provides a feasible material solution for developing a high-performance water electrolysis hydrogen production catalyst suitable for a complex water quality environment.

The invention discloses a hydrogen storage alloy and a preparation method thereof, relates to the technical field of metal functional materials, and solves the problems of high reaction temperature and low hydrogen absorption and dehydrogenation rate of a magnesium-based hydrogen storage material in the prior art. The prepared hydrogen storage alloy comprises the following alloy components in parts by mass: 5-15 parts of nickel, 2-8 parts of yttrium, 2-8 parts of ytterbium, 68.8-91 parts of magnesium and 0-0.2 part of impurities. A magnesium ingot, a magnesium-yttrium alloy and a magnesium-ytterbium alloy are melted, then magnesium-nickel alloy is added, stirring is conducted till the magnesium-nickel alloy is melted, standing is conducted, and casting is conducted to obtain a hydrogen storage magnesium alloy cast ingot; the method comprises the following steps: crushing a hydrogen storage magnesium alloy cast ingot, loading into a stainless steel ball milling tank for dry milling, and adding a solvent into the tank body for wet milling after the dry milling is finished; and drying to obtain the magnesium alloy flaky powder. According to the invention, multiphase cooperation, structure regulation and interface optimization of multiple elements are utilized, so that the hydrogen absorption and desorption performance of the hydrogen storage material is obviously enhanced.

The invention relates to the technical field of metallurgy preparation of heterogeneous materials, in particular to an efficient laser cladding preparation method of nickel-based superalloy on the surface of copper alloy, which comprises the following steps: increasing the absorptivity of the copper alloy to infrared laser through preheating, and carrying out laser cladding on GH3625 alloy on the surface of Cu-Cr-Zr alloy through regulating and controlling the components of a copper alloy / nickel alloy intermediate layer, so as to prepare the nickel-based superalloy on the surface of Cu-Cr-Zr alloy. And formation of a microstructure in the non-equilibrium solidification process is controlled, the process is optimized, and the mechanical property of the material is improved. According to the method, the intermediate layer is utilized to perform non-equilibrium state metallurgy preparation of the GH3625 alloy on the surface of the Cu-Cr-Zr base material, compared with the method without adding the intermediate layer, after the intermediate layer is added, the content of the copper element in a molten pool is increased, liquid-phase separation is promoted, a large-range Ni-Cr core shell is formed to serve as a low-energy nucleation site, crystal grains are refined, and the performance of the Cu-Cr-Zr alloy is improved. Further, a fine grain strengthening effect is achieved; the thickness of the element diffusion layer is also increased by adding the middle layer, the element uniformity is promoted, the dependence on Malangori is reduced, the heat input is reduced, the optimization of process parameters is realized, and the mechanical property of the heterogeneous material is further improved.

The invention relates to the technical field of nickel alloy pipe water pressure detection, and discloses a thin-wall nickel alloy pipe inner wall water pressure test detection system and method. The method comprises the steps that a closed water pressure environment is established in a pipe, a preset pressure gradient is applied, and pipe wall deformation response data are collected through a distributed sensing array; and generating a composite feature matrix containing axial strain, circumferential stress and radial displacement features through multi-dimensional feature extraction, inputting the composite feature matrix into a material performance degradation evaluation model, and simulating microstructure change to output a potential defect distribution map. Dynamically adjusting the water pressure gradient and the pressure maintaining time according to the map, executing a secondary water pressure test, and capturing a microscopic deformation sequence image through high-frequency imaging; comparing the image with a model prediction result identification deviation value, and iteratively updating a model parameter to optimize a detection threshold value; the test is completed by optimizing the threshold value, qualified pipe section marks and defective pipe section positioning coordinates are output, and the comprehensiveness and accuracy of thin-wall nickel alloy pipe inner wall defect detection are improved.

To provide a high Ni alloy containing Nb and N that has superior high-temperature creep strength.SOLUTION: A high Ni alloy having superior high-temperature creep strength, the alloy comprising, in mass%, C: 0.08% or less, Cr: 20-30%, Ni: 23-60%, Al: 0.01-0.20%, Ti: 0.05% or less, B: 0.0002-0.0050%, N: 0.10-0.30%, O: 0.006% or less, Ca: 0.0001-0.0050%, at least one of Mo and W in an amount of Mo+0.5×W: 0.01-1.50% (less than 1.50%), Nb: 0.10-0.65%, and at least one of V and Ta in a total amount of 0.01-0.60%, and satisfying the following [Limiting Expression A], and characterized in that the total amount (Nb) of Nb precipitated in the steel material is 0.11 mass% or less. [Limiting Expression A] 0.65≤Nb%+2×V%+Ta%≤1.60.SELECTED DRAWING: Figure 1

Valves with a coated surface are described. A surface of the valve can include a surface coating. For example, the surface coating can include many different materials and may include a metal or metal alloy such as, for example, a molybdenum alloy or a nickel alloy or a nickel molybdenum alloy. Systems and devices including the valves are also described.

The invention provides an alternating-current weak current high-precision detection system and method, and the system comprises a copper-nickel alloy shielding cover which is used for inhibiting space power frequency radiation interference and power system broadband noise, and a magnetic sensitive element which is used for converting the detected magnetic field change into a corresponding initial current signal, the trans-impedance amplifier is used for converting the initial current signal into a voltage signal; the adaptive noise suppression module collects a power frequency fundamental wave reference signal and a harmonic wave reference signal, generates a harmonic wave anti-phase counteracting signal, and performs anti-phase counteracting on real noise of the initial current signal; the analog-to-digital converter is used for converting the voltage signal into a discretized digital signal, and the discretized digital signal comprises a target signal and a random noise signal; and the FPGA coherent demodulation module is used for carrying out cross-correlation operation and narrow-band filtering on the target signal and the random noise signal to separate out a micro-current signal. The technical problems that in the prior art, composite noise covering is limited, the frequency fluctuation adaptability is poor, and microvolt-level signals are difficult to capture are solved.

The invention discloses a gradient copper-nickel alloy and a preparation method thereof, and belongs to the technical field of alloy preparation. CuCrZr is laid on the substrate, laser printing is carried out, and a CuCrZr alloy layer is formed on the surface of the substrate; gradient powder feeding printing is carried out on the CuCrZr alloy layer, and circulation is carried out for multiple times; the conveyed powder comprises CuCrZr and GH4169, the content of the CuCrZr is reduced along with the number of times of gradient powder feeding printing, and during last gradient powder feeding printing, only GH4169 is conveyed, printing is conducted, and the gradient copper-nickel alloy is obtained. Through the composition gradient design from CuCrZr to GH4169 and the multi-cycle printing process, collaborative improvement of high strength and high plasticity is achieved, and the product of high strength and ductility is obtained. According to the method, a single component can realize structure-function integration from high thermal conductivity and electrical conductivity to excellent high-temperature strength and corrosion resistance, and the application potential of a material system in different fields is greatly expanded.

The invention relates to a production method of high-grade non-oriented silicon steel hot-rolled strip steel, and belongs to the technical field of steel preparation. The method comprises the following steps: carrying out heating treatment on a non-oriented silicon steel continuous casting sheet billet containing specific alloy components, and controlling the tapping temperature of the heating treatment to be a set tapping temperature; carrying out rough rolling on the heated non-oriented silicon steel continuous casting sheet billet to obtain an intermediate billet; the intermediate billet is subjected to finish rolling, and hot-rolled strip steel is obtained; and the hot-rolled strip steel is subjected to laminar cooling, coiling, heat preservation and edge cutting, and the high-grade non-oriented silicon steel hot-rolled strip steel is obtained. Key process parameters of each hot rolling process are accurately controlled, and batch stable production of the high-grade non-oriented silicon steel with high silicon and high nickel alloy components is realized. According to the method, the edge qualification rate and the yield are increased, the harsh requirements of users for the material performance, the size and the strength are met, and key material support is provided for strategic emerging industries such as new energy automobiles and unmanned aerial vehicles.

The invention discloses an FPC film strain gauge and a manufacturing method thereof. The strain gauge comprises a flexible insulating substrate, a specific-component copper-nickel alloy layer (with 55% of Cu and 45% of Ni and the thickness of 1-5m) sputtered on the flexible insulating substrate, a plurality of independent sensitive grids etched on the alloy layer and arranged along different directions, and a signal lead on the other surface of the substrate, wherein the flexible insulating substrate is connected with the specific-component copper-nickel alloy layer through a via hole with a metalized hole wall. The manufacturing method comprises the steps of drilling, three-step plasma treatment, magnetron sputtering of alloy, electroplating of copper to reinforce the hole wall, double-sided photoetching and etching and the like. Through glue-free sputtering combination and a specific alloy formula, the problems of glue layer aging and temperature drift of a traditional strain gauge are solved, and the product has the advantages of being ultrathin, flexible, high in stability, high in precision and suitable for batch production.

A Fe—Cr—Ni alloy material that has high strength and reduced strength anisotropy is provided. A Fe—Cr—Ni alloy material according to the present disclosure consists of, by mass %, C: 0.030% or less, Si: 0.01 to 1.00%, Mn: 0.01 to 2.00%, P: 0.030% or less, S: 0.0050% or less, Ni: 29.0 to 36.5%, Cr: 23.0 to 27.5%, Mo: 2.00 to 6.00%, Al: 0.01 to 0.30%, rare earth metal: 0.016 to 0.100%, N: 0.220 to 0.500%, and O: 0.010% or less, with the balance being Fe and impurities, and satisfies Formula (1). In a microstructure, a standard deviation of the grain size numbers of austenite grains is 0.80 or less. The tensile yield strength is 758 MPa or more:3×Ni-2×Cr-150×N<15.(1)where, a content of a corresponding element in percent by mass is substituted for each symbol of an element in Formula (1).

The iron-nickel alloy welding wire comprises the following chemical components in percentage by weight: 34.5% < = Ni < = 37.5%, 0.040% < = C < = 0.080%, 0.01% < = Si < = 0.30%, 0.1% < = Mn < = 0.6%, P < = 0.0030%, S < = 0.0015%, O < = 0.0030%, N < = 0.0020%, 0.0010% < = Mg < = 0.0040%, 0.0001% < = Al < = 0.0025%, V < = 0.0020%, Ti < = 0.0020%, Nb < = 0.0020%, 0.0001% < = Ca < = 0.0020%, B < = 0.0010%, 0.0001% < = La + Ce < = 0.0020% and the balance of Fe and inevitable impurities. The iron-nickel alloy welding wire has excellent low-temperature expansion performance and post-

The invention discloses an aluminum-copper composite strip and a preparation method thereof, the strip comprises a copper alloy layer, an aluminum material layer and an intermetallic compound layer, the aluminum material layer is embedded in the copper alloy layer, the intermetallic compound layer is located between the copper alloy layer and the aluminum material layer, the copper alloy layer is a precipitation strengthening type copper-nickel alloy, and the intermetallic compound layer is an aluminum alloy layer. The average particle size of second-phase particles in the copper alloy layer is smaller than or equal to 20 nm, the intermetallic compound layer is composed of a first diffusion layer and a second diffusion layer which are stacked, the first diffusion layer contains a Cu9Al4 intermetallic compound, the second diffusion layer contains a CuAl2 intermetallic compound, and the thickness of the second diffusion layer is smaller than or equal to 2 microns. The preparation method of the strip comprises the technological processes of grooving, surface cleaning, composite rolling, intermediate annealing, cold rolling, annealing before forming, splitting and packaging. The strip achieves good matching of strength, conductivity, heat stress relaxation resistance and bending performance, and is suitable for occasions with high requirements for comprehensive performance of materials, such as automobile wire harness connecting terminals and the like.

The invention discloses a self-lubricating titanium-based metal ceramic and a production process thereof. The self-lubricating titanium-based metal ceramic is prepared from Ti (C0.7, N0.3) powder, TiB2 powder, HEA fibers, h-BN (at) KH550 and Y2O3 powder. The production process comprises the following steps: 1) preparing high-entropy alloy coated carbon fibers through laser ablation; 2) performing segmented ball milling to realize uniform dispersion of a hard phase and a lubricating phase; (3) a surface Ti-rich (C0.7, N0.3) hard layer and a core chromium-cobalt-nickel alloy binding phase are constructed through gradient carburizing and sintering; and 4) performing hot isostatic pressing densification treatment. By utilizing the crack bridging effect of HEA fibers and the directional lubrication characteristic of h-BN and cooperating with the carburizing gradient structure design, the material has ultrahigh hardness, excellent toughness and wide-temperature-range self-lubricating performance at the same time, and is particularly suitable for high-strength operation under the high-temperature condition.

The invention discloses an iron-nickel alloy welding wire for welding liquefied gas equipment and a manufacturing method of the iron-nickel alloy welding wire. The iron-nickel alloy welding wire comprises, by weight, 34.5% < = Ni < = 37.5%, 0.020% < = C < = 0.050%, 0.01% < = Si < = 0.30%, 0.1% < = Mn < = 0.6%, 0.0030% < = P, 0.0015% < = S, 0.0030% < = O, 0.0020% < = N, trace < = Mg < = 0.0020%, trace < = Al < = 0.0060%, 0.0020% < = V, 0.0020% < = Ti, 0.0020% < = Nb, trace < = Ca < = 0.0020%, 0.0010% < = B and the balance Fe and inevitable impurities. And the elements also need to simultaneously meet the following conditions: 0.0030% < = S1 < = 0.0060%, and-0.005% < = S2 < = 0. The welding wire has low expansibility, and an obtained welding seam has good low-temperature impact toughness. The thermal expansion coefficient of the alloy welding wire between-180 DEG C and 0 DEG C is (1.0-2.0) * 10 <-6 > m / m / DEG C, the V-shaped impact test result of welding cladding metal of the alloy welding wire at the temperature of-196 DEG C is larger than or equal to 150 Jcm <-2 >, and the alloy welding wire is particularly suitable for manufacturing low-temperature liquefied gas transportation assemblies.

The invention relates to a high-pressure air separation liquid valve with a multi-stage low-temperature self-tightening sealing structure, which relates to the technical field of low-temperature high-pressure fluid control and comprises a valve body assembly, a multi-stage sealing assembly and a valve rod thermal compensation assembly. The multi-stage sealing assembly is arranged on the valve element in a stepped mode and comprises a primary metal hard sealing ring, a secondary modified PTFE sealing ring and a three-stage self-tightening type metal spring energy storage ring, and the main sealing function, the flexible compensation function and the pressure self-tightening function are achieved respectively. The valve rod thermal compensation assembly comprises a titanium alloy valve rod and a copper-nickel alloy thermal buffer sleeve, and the displacement of the sealing face is automatically compensated at the low temperature through the difference between a reserved gap and the thermal expansion coefficient of a material. Through multi-stage sealing cooperation and intelligent thermal compensation, the problem of sealing leakage caused by material failure and thermal deformation under the ultralow-temperature and high-pressure working conditions is effectively solved, all-working-condition reliable sealing is achieved, the safety of the valve in the extreme environment is remarkably improved, and the service life of the valve in the extreme environment is remarkably prolonged.

The invention provides a manufacturing method of a copper-nickel alloy pipe with excellent high-temperature plasticity. The manufacturing method comprises the following steps that S1, Ni, Fe, Mn, Ti, CuMg20 and Cu raw materials are weighed according to components of a nickel-based alloy pipe; s2, raw materials of Cu, Ni, Fe, Mn and Ti are smelted, CuMg20 is added for deoxidation, and an alloy round ingot is obtained through casting; s3, the alloy round ingot is subjected to homogenizing annealing; s4, forging and upsetting the alloy round ingot to obtain an upset round ingot; s5, performing hot extrusion on the upset round ingot to obtain a tubular billet; s6, the tubular billet is subjected to cold rolling, and annealing is conducted between pass cold rolling; and S7, the tubular billet is subjected to heat treatment, and the copper-nickel alloy pipe is obtained. According to the method, the uniformity and thermoplasticity of the alloy structure are improved, the plasticity and comprehensive mechanical performance of the copper-nickel alloy pipe in the high-temperature environment are remarkably improved, and the method is stable, high in repeatability and beneficial to large-scale production of the high-quality copper-nickel alloy pipe.

This invention discloses a method for dissolving NiCrPSi nickel alloy samples for ICP-OES detection, comprising the following steps: mixing the NiCrPSi nickel alloy sample to be tested with hydrochloric acid aqueous solution, concentrated nitric acid, and hydrofluoric acid aqueous solution, digesting at 120-140℃ for 1.5-2.5h, and then evaporating the solution to dryness at 220-260℃; then adding nitric acid aqueous solution and heating until the solid is completely dissolved, and then diluting with water to obtain the NiCrPSi nickel alloy test solution. The dissolution method of this invention can completely dissolve NiCrPSi nickel alloy powder without elemental loss, providing an accurate sample solution for ICP-OES detection; and it eliminates the need for specialized equipment such as microwave digesters or electrothermal digesters, as well as special reagents such as perchloric acid and tartaric acid, using only conventional acid reagents and general experimental equipment, thus reducing costs, simplifying operation, and enhancing versatility.

The invention relates to the technical field of coating surface treatment, in particular to a zinc-aluminum-nickel alloy coating surface treatment auxiliary device which comprises a machining table and an adjustable scraper assembly arranged in the machining table, the adjustable scraper assembly comprises a rotary disc, the rotary disc is arranged in the machining table and rotationally connected with the machining table, and the rotary disc is arranged in the machining table and rotationally connected with the machining table. An annular piece is fixed to the middle of the rotary disc, four movable frames are slidably connected into the annular piece, rotating shafts are rotatably connected into the movable frames, one ends of the rotating shafts penetrate through the movable frames and are fixedly provided with scrapers, and first connecting frames are hinged to the ends, located on the left side and the right side, of the movable frames. The distance between the scrapers can be accurately adjusted through an electric telescopic rod driving structure, coating residues can be efficiently, uniformly and thoroughly scraped off whether rectangular or round metal pieces exist, and the surface treatment quality and efficiency are remarkably improved.

This utility model discloses a high-temperature resistant cooling circulation structure for a fluoroplastic magnetic pump, specifically relating to the field of magnetic pumps. It includes a base, pump body, pump cover, connecting frame, isolation sleeve, inner magnetic rotor, outer magnetic rotor, motor, and impeller. The isolation sleeve, inner magnetic rotor, and outer magnetic rotor are all housed inside the connecting frame. The high-temperature resistant cooling circulation structure of this fluoroplastic magnetic pump features a spiral cooling channel inside the isolation sleeve. The coolant flows directly through the core area of ​​the heat source, rapidly absorbing heat transferred by magnetic eddy currents and high-temperature media through forced convection, thus improving cooling efficiency and effectively blocking heat transfer to the outer magnetic rotor, preventing permanent magnets from demagnetizing and failing due to high temperatures. Copper-nickel alloy heat-conducting fins are welded to the inner wall of the isolation sleeve, combined with a layer of thermally conductive silicone grease, accelerating the conduction of heat from the inner magnetic rotor to the cooling channel. A vacuum cavity is provided between the spiral cooling channel and the outer wall of the isolation sleeve to suppress heat conduction to the outer magnetic rotor, achieving double thermal isolation.

The utility model relates to the technical field of pipeline maintenance, discloses alloy physical scale removal and inhibition equipment, and aims to solve the problems that an existing physical scale inhibition device depends on external power and is poor in scale removal and inhibition effect. The device comprises a turbulent flow ring, a pipeline, a connecting ring, a fixing buckle and a descaling assembly, the turbulent flow ring is made of titanium-nickel alloy, and bidirectional extending turbulent flow plates distributed gradually in the circumferential direction are arranged on the inner ring of the turbulent flow ring; the descaling assembly is of a double-spring elastic structure, and multiple sets of scrapers are provided with arc-shaped protrusions and distributed in the circumferential direction. The connecting ring is detachably connected with the pipeline through a fixing buckle and is matched with a positioning groove and a friction layer. The device drives the turbulent flow ring to rotate through water flow, external power is not needed, a strong turbulent flow field can be formed to inhibit scale from the source, and meanwhile the inner wall of the pipeline is descaled.

The invention provides a method for efficiently recovering cobalt and nickel from tungsten smelting tailings through pyrogenic process smelting, and belongs to the technical field of tungsten smelting tailings treatment.The method comprises the following steps that after the tungsten smelting tailings are dried and crushed, the tungsten smelting tailings are mixed with a reducing agent and a fluxing agent, and a mixture is obtained; smelting the mixture in an inert atmosphere, wherein the smelting temperature in the first stage is 1200-1300 DEG C; the smelting temperature of the second stage ranges from 1450 DEG C to 1550 DEG C; the lower part is a liquid cobalt-nickel alloy, and the upper part is a slag phase; and the cobalt-nickel alloy product is obtained after the liquid cobalt-nickel alloy is cooled and cast. According to the method, cobalt and nickel in the tungsten smelting tailings are reduced into metal phases through pyrogenic process smelting and control over the batching mode, the temperature and the reducing agent proportion, the metal phases are efficiently separated from other impurities, and finally the high-grade cobalt-nickel alloy and the slag capable of being comprehensively utilized are obtained.

According to the technical scheme, the composite seamless nickel alloy pipe comprises an alloy pipe and a graphene heating belt, a heating groove is formed in the portion, close to the inner surface, of the interior of the alloy pipe, the graphene heating belt is installed in the heating groove, and heat preservation tinfoil is arranged on the portion, located on the outer surface of the graphene heating belt, of the interior of the heating groove. A heat preservation groove is formed in the alloy pipe close to the outer surface, a vacuum groove A is formed in the alloy pipe and located in a gap between the heating groove and the heat preservation groove, and a vacuum groove B is formed in the alloy pipe and located at the top of the vacuum groove A. The composite seamless nickel alloy pipe for petroleum transportation solves the problems that when an existing seamless steel pipe for petroleum transportation is used in a low-temperature environment, petroleum is prone to being supercooled under the influence of external cold air, the viscosity of the petroleum is increased, and the petroleum transportation efficiency is reduced, the condensation probability of the petroleum is reduced, and therefore normal transportation of the petroleum is guaranteed.

The invention discloses a method for preparing a copper-nickel alloy for a solid-state battery through an alkaline system, and belongs to the technical field of solid-state batteries. A pyrophosphate aqueous solution system is used as an electrolyte, and the copper-nickel alloy is prepared through an electro-deposition method; the pyrophosphate aqueous solution system comprises the following components: raw materials of copper pyrophosphate and nickel chloride, a main complexing agent of potassium pyrophosphate, an auxiliary complexing agent of ethylenediaminetetraacetic acid or potassium sodium tartrate, a brightener and an additive. The components and thickness of the alloy are adjusted by changing the metal ion concentration, the input amount of the complexing agent and the like and changing the technological parameters (pH, current density, electrodeposition time and the like), the copper-nickel alloy with the tensile strength reaching 1012.70 MPa, the elongation reaching 5.27% and the nickel content being 8.93% can be prepared, the corrosion resistance is excellent, the coating thickness is uniform, electrodeposition can be conducted at the normal temperature, and the copper-nickel alloy can be used for preparing the copper-nickel alloy with the tensile strength reaching 1012.70 MPa, the elongation reaching 5.27% and the nickel content reaching 8.93%. Therefore, the method is suitable for large-scale industrial production.

The invention provides a nickel-based precise high-resistance alloy wire, and relates to the technical field of resistance alloys, and the alloy wire comprises the following chemical components in percentage by mass: 18%-22% of chromium, 1.5%-2.5% of aluminum, 1.0%-2.0% of iron, 1.2%-2.2% of copper, 0.5%-1.2% of manganese, 0.3%-0.8% of titanium, 0.05%-0.15% of zirconium, 0.01%-0.08% of cerium and the balance of nickel. The resistivity of the alloy wire at the temperature of 20 DEG C is larger than or equal to 1.35 mu omega.m, the average resistance temperature coefficient of the alloy wire at the temperature of 20-155 DEG C is-12 ppm / DEG C-15 ppm / DEG C, the Vickers hardness of the alloy wire is 180-240, and the oxidation weight increment at the temperature of 800 DEG C per 100 h is smaller than or equal to 0.90 mg / cm. By improving the composition proportion and the preparation method of the alloy wire, perfect balance of high resistivity, low resistance temperature coefficient, excellent heat resistance and processability can be realized.

The utility model discloses a nickel alloy steel strip processing polishing device with a positioning function, which comprises a machine body shell, a supporting cylinder arranged in the machine body shell, a second driving motor arranged on the rear side of the supporting cylinder, a conveying belt arranged on the outer side of the supporting cylinder, and an anti-skidding foot pad arranged at the lower end of the machine body shell. According to the polishing device with the positioning function for nickel alloy steel strip machining, a nickel alloy steel strip can be effectively positioned and clamped conveniently in the process, so that the nickel alloy steel strip is not prone to position deviation in the polishing process, the possibility of safety accidents is reduced, and the use safety of the device is improved; and meanwhile, in the using process of the device, the polishing area of the device can be conveniently adjusted according to the size of the nickel alloy steel strip, so that the nickel alloy steel strips with different widths and volumes are easily and effectively machined by the device, the using efficiency of the device is improved, and a better using effect is achieved.

The utility model relates to the technical field of nickel alloy processing, in particular to a nickel alloy heat treatment furnace convenient to adjust temperature control, which comprises a bottom plate and a furnace body fixedly connected to the upper end of the bottom plate, a rotating shaft is rotatably connected to the rear part of the interior of the furnace body through a bearing, and supporting rods and starting motors are fixedly connected between a plurality of connecting plates and the rotating shaft. The motor drives the second gear to rotate, the second gear drives the first gear to rotate, the first gear drives the rotating rod and the rotating shaft to rotate, the rotating shaft drives the multiple charging barrels to rotate with the rotating shaft as the center, accordingly, the nickel alloy bars in the multiple charging barrels roll, and the multiple through holes are formed in the outer walls of the multiple charging barrels, so that heat circulates; the nickel alloy bar rolling in the charging barrel is matched, heating is more uniform, the heating efficiency is effectively improved, the overall heat treatment efficiency is improved, the PI D controller is responsible for adjusting the heating current in furnace body temperature control, accurate control over the heating process is achieved, and temperature control is convenient.