418 results about "Nickel alloy" patented technology

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.

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 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.

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.

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.

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 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.

The internal combustion engine piston capable of reducing abrasion comprises a piston body and a piston head, the piston body and the piston head are fixed, a piston ring groove is formed in the outer wall of the circumference of the piston head, a sealing ring is fixedly connected in the piston ring groove, a plurality of reinforcing rings are fixed in the piston head, the piston body comprises a high-temperature-resistant filling layer, and the high-temperature-resistant filling layer is arranged in the piston ring groove. A high-temperature-resistant filling layer is fixedly connected to the outer side of the plug body, a wear-resistant layer is fixedly connected to the outer side of the high-temperature-resistant filling layer, the high-temperature-resistant filling layer is made of aluminum alloy or nickel alloy, the wear-resistant layer is a dlc coating or a high-silicon aluminum alloy coating, and an assembly hole is formed in the bottom of the plug body. According to the wear-resistant piston, the high-temperature-resistant filling layer and the wear-resistant layer are matched for use, so that the piston body is more wear-resistant and high-temperature-resistant, the service life of the piston is prolonged, meanwhile, the piston and an external device can be connected more tightly through the sealing ring, and the piston head can be firmer and more durable through the reinforcing ring.

The invention provides a method for reducing the laser annealing carbon precipitation amount of a SiC material and the SiC material. The method comprises the steps that (1) a silicon-nickel alloy layer is formed on the back face of a SiC substrate; (2) laser annealing treatment is carried out on the surface of the formed silicon-nickel alloy layer, so that ohmic contact is formed between the silicon-nickel alloy layer and the SiC substrate; by adopting the method disclosed by the invention, not only can the precipitation of carbon be effectively reduced and the particle size of the precipitated carbon be reduced, but also good ohmic contact is formed between the silicon-nickel alloy layer and the SiC substrate, and the specific contact resistivity is relatively low.

The application relates to the technical field of power connection device manufacturing, in particular to a manufacturing method of a track socket busbar, a composite busbar and a track socket, and aims to solve the problems that although a traditional silver plating process can delay copper-based oxidation, the silver layer is easy to wear and the cost is high, and although a micro-arc oxidation layer of an aluminum-based busbar has insulation, a porous structure is easy to absorb moisture, leading to a decrease in corrosion resistance. The application forms a silver-nickel alloy layer with metallurgical bonding through laser surface alloying, generates an in-situ ceramic insulation layer through micro-arc oxidation, and realizes stable compounding of copper-aluminum substrates by using a mechanical occlusion structure, so that the advantages of synchronously improving the electric conductivity and the corrosion resistance and solving the interface delamination problem are achieved.

The application provides a flat POGO PIN female head connector, which comprises a stainless steel back shell, a plastic front cover and a plastic upper cover arranged at the lower end and the upper end of the front side of the stainless steel back shell respectively, three upper stretch terminals equidistantly arranged on the plastic upper cover, three lower stretch terminals equidistantly arranged on the plastic front cover, and a plastic body integrally injection molded on the upper stretch terminals and the lower stretch terminals; the surface of the upper stretch terminals is sequentially plated with a nickel base layer, a palladium-nickel alloy layer and a gold layer, the surface of the contact area of the lower stretch terminals is sequentially plated with a nickel base layer, a gold layer, a platinum alloy layer, a palladium-nickel alloy layer and a platinum alloy layer to form an anti-electrolytic corrosion plating layer; the end of the upper stretch terminal is provided with a cantilever, and the ends of the three cantilevers are stacked and riveted with a flat plate part; and the front side of the plastic front cover is a flat surface. The flat POGO PIN female head connector realizes quick mutual matching, high-reliability power supply and signal transmission.

The invention provides an anode, a device, a system and a method for producing tungsten hexafluoride through electrolysis. A tungsten-nickel alloy with the nickel content being 5-15 wt% is adopted for the anode, a NiF2-WF2 composite fluorinated layer with the thickness being 10-50 microns is pre-generated, the layer has high fluorine ion conductivity, and anode passivation is fundamentally inhibited. KF.2HF fused salt is used as a basic electrolyte of the electrolysis device, LiF and CsF are innovatively added as composite functional additives, LiF improves the wettability of a melt, CsF inhibits the anode effect, and efficient and stable electrolysis operation is guaranteed through cooperation of LiF and CsF. The production system is integrated with a gradient solidification separator, and condensation recovery of HF and desublimation collection of high-purity WF6 crystals are realized through the design of three temperature zones of 28-32 DEG C, 20-25 DEG C and-25--30 DEG C based on the vapor pressure difference of WF6 and HF. According to the scheme, through multi-level innovation and cooperation of materials, interfaces and systems, the defects that in a traditional method, anode failure is fast, product separation is difficult, and purity is low are overcome, efficient, long-period and high-purity production of tungsten hexafluoride is achieved, and the method is particularly suitable for high-end manufacturing industries such as semiconductors.

This invention provides an iron-nickel composite carbon fiber material and its preparation method. The iron-nickel composite carbon fiber material comprises: oxygen-modified carbon fibers with oxygen-containing functional groups on their surface; nano-nickel particles distributed on the surface of the oxygen-modified carbon fibers; and an iron-nickel alloy layer coating the oxygen-modified carbon fibers containing the nano-nickel particles. The iron-nickel composite carbon fiber material provided by this invention, by incorporating nano-nickel particles between the oxygen-modified carbon fibers and the iron-nickel alloy layer, enhances the magnetic permeability of the iron-nickel composite carbon fiber material. The oxygen-containing functional groups on the surface of the oxygen-modified carbon fibers can anchor metal ions, improve the uniformity of the nano-nickel particle distribution, and enhance the interfacial bonding force between the nano-nickel particles, the iron-nickel alloy layer, and the carbon fibers.

Provided are a composite substrate for an all-solid-state battery having excellent sulfation resistance and high-temperature life characteristics, and a negative electrode including the same.SOLUTION: The present disclosure relates to a composite substrate for an all-solid-state battery, a negative electrode for an all-solid-state battery including the same, and an all-solid-state battery. More specifically, the composite substrate for an all-solid-state battery of the present disclosure includes a polymer layer, a first nickel alloy layer on a first surface of the polymer layer, and a second nickel alloy layer on a second surface of the polymer layer, wherein each of the first and second nickel alloy layers includes a nickel-iron binary alloy.SELECTED DRAWING: Figure 4

This utility model discloses a novel electric screwdriver with a modular design, including a screwdriver body and a handle mechanism. The screwdriver body includes a main body shell, a screwdriver head, and a drive assembly. The rear end of the main body shell has a T-shaped or dovetail-shaped locking groove, within which a conductive groove electrically connected to the drive assembly is embedded. The handle mechanism includes a handle housing containing a battery module and a control module. The housing has a slide rail boss that matches the locking groove, and a conductive plate on the boss. When inserted into the locking groove, the plate forms an interference contact with the conductive groove, achieving stable power supply. The contact surface between the conductive groove and the conductive plate is plated with a silver-nickel alloy layer to enhance oxidation resistance. The side of the locking groove has a positioning hole for fixed connection via a limit screw. This utility model has advantages such as convenient assembly and disassembly, stable conductivity, and strong vibration resistance, solving the problems of inconvenient maintenance, limited battery life, and poor versatility of traditional electric screwdrivers. It is suitable for various scenarios such as electronic assembly and mechanical repair.

The invention relates to the field of metal material corrosion and protection, and provides a seawater film-forming device and method for a marine copper-nickel alloy heat exchange tube, and the seawater film-forming method comprises the following steps: S1, preparing the seawater film-forming device; s2, calculating the total flow Q of the pipeline system: Q = n * A * v * 3600 / 1000000; s3, determining the flow of the sea water pump, wherein the flow of the sea water pump is equal to 1.2-1.3 Q; s4, building a seawater film forming device; s5, setting the flow velocity of a pipeline, namely debugging the water by using a starter to ensure that the flow velocity in the heat exchange pipe reaches 1.0-3.0 m / s; and S6, seawater film forming time: forming a film after the heat exchange tube is continuously scoured by seawater for 20-60 days. According to the seawater film forming method for the marine copper-nickel alloy heat exchange tube, the seawater film forming method is easy to operate and convenient to implement; the film forming effect is good; no chemical agent is used, so that the method is environment-friendly.

The present application belongs to the technical field of marine engine bearing bush coating, and discloses a composite treatment method for the surface of a marine heavy-duty engine bearing bush, which comprises bearing bush substrate pretreatment, electroplating treatment, electroplating post-treatment and spraying treatment. The present application breaks through the limitation of single surface treatment technology, uses a tin-nickel alloy electroplating layer as the bottom layer to provide the bearing bush with good basic strength, toughness and impact resistance, and uses a spraying layer containing solid lubricants such as molybdenum disulfide and graphite as the surface layer to endow the bearing bush with excellent compliance, embeddability and self-lubricating performance. The combination of the two perfectly solves the technical problem that the traditional process cannot simultaneously consider strength and surface performance, and is particularly suitable for the complex working conditions of frequent start-stop and power overload of marine heavy-duty engines.

The utility model discloses ultrathin hand tearing abrasive cloth which comprises an abrasive cloth body, a plurality of groups of pre-tearing grooves are formed in the surface of the abrasive cloth body, each group of pre-tearing grooves is composed of two pre-tearing grooves, and the two pre-tearing grooves are symmetrically arranged relative to the abrasive cloth body. According to the utility model, the plurality of groups of pre-tearing grooves are designed, and the pre-tearing grooves are formed in the surface of the abrasive cloth body in advance, so that the thickness of the tearing position of the abrasive cloth body is thinned, and the abrasive cloth single body on one side of the pre-tearing grooves can be broken along the pre-tearing grooves by pulling the abrasive cloth single body by a hand during hand tearing, so that the hand tearing is convenient and easy, and the tearing surface is flat; the titanium-nickel alloy wires are designed, the titanium-nickel alloy wires are laid in the abrasive cloth body in a net-shaped weaving mode, the titanium-nickel alloy wires have the excellent tensile strength characteristic, and the titanium-nickel alloy wires are arranged in the abrasive cloth body, so that the overall tensile strength and strength of the abrasive cloth are improved, and the situation that the abrasive cloth is broken due to pulling in the use process, and polishing use is affected is avoided.

The invention relates to an electrode and a preparation method and application thereof, and belongs to the field of water electrolysis industry. The preparation method of the electrode comprises the following steps: providing an electroplating base material; nickel is plated on the surface of the electroplating base material to form a nickel plating layer, and a pre-plated base material is obtained; the pre-plated base material is added into a first electroplating solution to be electroplated to form an alloy plating layer, the electrode is obtained, and the first electroplating solution comprises a NiSO4 solution with the concentration being 0.5 mol / L to 1 mol / L, a Na2MoO4 solution with the concentration being 0.01 mol / L to 0.05 mol / L and a CuSO4 solution with the concentration being 0.1 mol / L to 0.5 mol / L. Compared with nickel or common nickel alloy, the prepared electrode has the advantages that the hydrogen adsorption performance is reduced, the overpotential is effectively reduced, and the water electrolysis performance is close to that of precious metal.

According to the technical scheme, the nickel alloy seamless steel pipe comprises a nickel alloy pipe and a protection pipe, a supporting ring is installed on the outer surface of the nickel alloy pipe, a nylon ring is arranged on the outer surface of the supporting ring, and the protection pipe is arranged on the outer surface of the nylon ring. Rubber plugs are installed at the gap positions of the two sides of the protection pipe and the nickel alloy pipe through clamping buckles, an anti-rust coating B is arranged on the inner surface of the nickel alloy pipe, and an anti-rust coating A is arranged on the outer surface of the nickel alloy pipe. The nickel alloy seamless steel pipe subjected to rust-proof treatment solves the problems that the outer surface of an existing seamless steel pipe is directly exposed, the seamless steel pipe is directly contacted with air or soil, the seamless steel pipe is extremely easy to rust under the influence of the air or the soil, and the service life of the seamless steel pipe is influenced, reduces the rust probability of the seamless steel pipe, and improves the production efficiency. Therefore, the service life of the seamless steel pipe is prolonged.

The present application relates to a kind of nickel alloy screen for printing and its manufacturing method, comprising the following steps: step one: select nickel alloy plate as original model;Step two: the surface cleaning of the original model selected in step one is carried out, and surface dirt and oil stain are removed;Step three: using chemical cathode deposition method, with original model as material, add electroforming liquid, complete nickel net integrated molding work by electroforming;Step four: the electroformed nickel net after being treated in step three is demoulded, and nickel alloy net is obtained;Step five: the nickel alloy net after being demoulded in step four is hot melt compounded with PE film by hot melting machine.The present application is integrally formed by micro electroforming, processed and formed by cathode deposition phenomenon in electrochemical process, has very high replication accuracy and dimensional accuracy, can replace the use of traditional screen gauze, and because of its flexibility of arbitrary design, currently has designed multiple schemes to match the use of different scenes.

An object is to suppress the occurrence of cracks even in a state where elongation is applied while the hardness of the surface of a rolled surface-treated steel sheet is maintained and to improve a sheet passing property when passing through squeezing rolls and sheet passing rolls. This is solved by means of a provided manufacturing method of a rolled surface-treated steel sheet including an iron-nickel alloy layer formation step in which an iron-nickel alloy layer is formed on a steel sheet to be a base material, and a rolling step in which, after the iron-nickel alloy layer formation step, the steel sheet having the iron-nickel alloy layer is rolled at a rolling reduction of 5% to 25%.

The hydrogen storage alloy is prepared from magnesium-zinc alloy powder, lanthanum-nickel alloy powder and PE plastic particles. The magnesium-zinc alloy comprises the following components in percentage by weight: 28 to 32 percent of Zn (zinc), 0.004 to 0.008 percent of Al (aluminum), 0.0010 to 0.0015 percent of Fe (iron), 0.0008 to 0.0014 percent of Si (silicon), 0.0008 to 0.0015 percent of Mn (manganese), 0.00010 to 0.0002 percent of Cu (copper), 0.00020 to 0.0003 percent of Ni (nickel) and the balance of Mg (magnesium); the lanthanum-nickel alloy comprises 46-52 wt% of La, 48-54 wt% of Ni, less than 0.2 wt% of Fe and less than 0.03 wt% of C; the magnesium-zinc alloy powder and the lanthanum-nickel alloy powder are mixed according to the mass ratio of 98: 2 and then mixed with the PE plastic particles according to the mass percent of 2: 1; and putting the mixed raw materials into a graphite crucible, and smelting the mixed raw materials by adopting an argon arc welding machine to obtain the hydrogen storage alloy of a blocky sample. The scheme is low in cost, and plastic recycling is achieved.