18 results about "Monel" patented technology

The present invention relates to the technical field of superconducting materials. Disclosed are a MgB2 superconducting wire and a preparation method therefor. The preparation method comprises: melting Mg, Cu and Ti to obtain a Mg alloy ingot, processing the Mg alloy ingot to obtain a Mg alloy rod, loading the Mg alloy rod and B powder into a Nb tube to obtain a composite rod, processing the composite rod to obtain a single-core wire, loading the single-core wire into an oxygen-free copper tube, then loading into a monel tube in a densely-packed manner, and performing cold-forming treatment to obtain a multi-core composite wire; and performing high-temperature phase-forming heat treatment on the multi-core composite wire to prepare the MgB2 superconducting wire. In the present application, the Mg alloy rod containing Cu and Ti metal elements is used as a Mg source for preparing a MgB2 multi-core wire, so as to improve the plastic deformation ability of the Mg alloy rod in the wire treatment processes, and improve the grain boundary coupling, thereby improving the current carrying performance of the MgB2 superconducting wire.

Herein discussed is a heat management system comprising a pipe and a static auger inside the pipe, wherein the pipe has an inner diameter of d, wherein the auger has an outer diameter D and a pitch P, wherein the ratio of D / P is no less than 1, and wherein the auger outer diameter D is no less than 90% of the pipe inner diameter d. In an embodiment, the ratio of D / P is in the range of 2-10, or 2-5, or 2-4, or 5-10. In an embodiment, the pipe is made from stainless steel, carbon steel, Monel, Inconel, Incoloy, Hastelloy, ceramics, silicon carbide, alumina, and combinations thereof. In an embodiment, the system comprises a fluid passing through the pipe, wherein the pipe heats or cools the fluid.

The invention relates to a preparation method of antimony pentafluoride, which comprises the following steps: preheating raw material gas nitrogen trifluoride, placing nitrogen trifluoride and antimony powder in a tubular furnace reactor made of a specific material, carrying out gradient heating reaction at 300-400 DEG C under the condition that the antimony powder is distributed by adopting a multi-layer nickel plate tiled structure, carrying out reaction for 10-40 seconds, and carrying out solid filtration through a filter after the reaction is completed, so as to obtain the antimony pentafluoride. And carrying out cold trap collection to obtain an antimony pentafluoride product. The diameter of the reactor is made of a nickel material or Monel to prevent corrosion of antimony pentafluoride, the number of tiled layers of nickel plates is r / 5-r / 10, the contact area is increased, the reaction yield is increased, and the utilization rate of the raw material nitrogen trifluoride is increased.

This application provides an online detection and grinding method for edge defects in Monel alloy slabs, relating to the field of alloy plate quality inspection technology. The method includes the following steps: upon receiving a detection command, simultaneously sending scanning and acquisition signals; acquiring a set of temperature fields along the laser spot's movement trajectory, including the coordinates of multiple detection laser spots and the cooling process sequence corresponding to each laser spot coordinate on the slab edge, including the process temperature at multiple sampling moments starting from the instant the laser is turned off; obtaining a cooling rate characteristic value corresponding to each laser spot coordinate based on the cooling process sequence; identifying the points on the slab edge corresponding to laser spot coordinates with cooling rate characteristic values ​​less than a first preset threshold as first defect points; and obtaining a target grinding path based on all first defect points, and controlling the grinding device to grind the slab edge along the target grinding path. This is a highly efficient, accurate, and automated integrated solution for online detection and grinding.

The invention discloses a heat treatment method of an Nb / Monel-based MgB2 multi-core wire. The method comprises the following steps: 1, mixing and grinding Mg powder and B powder to obtain blended powder; 2, loading the blended powder into a niobium tube to obtain a powder loading body; 3, carrying out rotary swaging processing on the powder to obtain a single core wire; 4, processing the single-core wire, bundling the single-core wire with a copper rod, loading the bundled single-core wire and the copper rod into a Monel tube, and carrying out rotary swaging and drawing to obtain a multi-core wire; 5, winding the multi-core wire into a solenoid, wrapping the solenoid in a carbon foil, heating to a first platform temperature, and keeping the temperature; and 6, raising the temperature to a second platform temperature, and carrying out heat preservation to obtain the MgB2 superconducting wire. Through heat treatment of a two-stage gradient heat preservation process, a high-density dislocation network can be formed in the MgB2 phase forming process, the MgB2 multi-core superconducting wire which is densified, refined in grain and obviously increased in pinning center is prepared on the premise that the process is greatly simplified, and the method is suitable for the field of superconducting materials.

The invention provides a Monel alloy plate blank edge defect online detection and coping method, and relates to the technical field of alloy plate quality detection, and the method comprises the following steps: receiving a detection instruction, and synchronously sending a scanning signal and an acquisition signal; a temperature field set on the light spot moving track is obtained, the temperature field set comprises light spot coordinates of a plurality of detection light spots and a cooling process sequence corresponding to each light spot coordinate of the edge of the plate blank, and the cooling process sequence comprises process temperatures at a plurality of sampling moments starting from the moment of laser closing; according to the cooling process sequence corresponding to each light spot coordinate, obtaining a cooling rate characteristic value corresponding to each light spot coordinate; taking a point position of the edge part of the plate blank corresponding to the light spot coordinate of which the cooling rate characteristic value is smaller than a first preset threshold value as a first defect point position; and based on all the first defect point positions, a target grinding path is obtained, and the grinding device is controlled to grind the edge of the plate blank according to the target grinding path. The invention provides an efficient, accurate and automatic online detection and coping integrated solution.

The invention provides a jacket Monel plate installation gap adjusting device, and relates to the technical field of offshore oil engineering jacket installation. The handle is connected with the bandage connecting piece through a rotating mechanism; the pressing structure is arranged at the bottom of the bandage connecting piece and used for flattening the monel plates on the two sides of the gap. The operation handle is used for controlling the pressing plate to press the monel plates on the two sides of the welding seam, then the butt joint gap between the monel plates on the two sides of the welding seam is adjusted, assembly welding is facilitated through the structure, the operation principle of the device is similar to that of a lever, and lifting can be facilitated by arranging the rotating mechanism and the handle; by means of the monel plate gap adjusting device, the monel plates can be rapidly adjusted and flattened, the monel plates can be fixed through binding bands, and base material damage caused by temporary spot welding in a welding type tool is avoided.

This invention discloses a welding method for Monel alloy rotor supports. First, an arc-shaped groove is carved into the support plate to be welded. Then, positioning fixtures are used to ensure the axial and radial dimensions of the support plate and the main shaft during welding. The first support plate is welded using argon arc welding at the bevel of the groove surface, followed by grinding on the reverse side and then grinding on the front side before continuing welding. Argon gas protection is used throughout the process. After stabilizing the weld, carbon dioxide shielded welding is used to create the weld surface before welding the next support plate. Finally, the weld is inspected using dye penetrant testing and ultrasonic testing. This welding method is suitable for welding rotor supports made of low-magnetic Monel alloy materials, avoiding or reducing deformation and fracture caused by welding, preventing a decrease in overall structural strength due to incomplete penetration, and ensuring the accurate dimensions of the welded rotor support.

The invention belongs to the technical field of superconducting materials, and discloses a high-performance MgB2 superconducting wire and a preparation method thereof. The method comprises the following steps: uniformly mixing nano Mg alloy powder and B powder in an inert gas atmosphere according to the atomic number ratio of Mg to B being 1: 2; then compounding the high-purity Nb rod, the CuNi alloy pipe and the anaerobic Cu pipe into an Nb / CuNi / Cu alloy rod, processing a deep hole, and filling mixed powder to prepare a single core wire; and then assembling the single-core wire into a Monel alloy tube, processing the single-core wire into a multi-core composite wire, and performing high-temperature phase forming heat treatment to obtain the high-performance MgB2 superconducting wire. Metal boride can be generated by metal elements in the adopted nano Mg alloy powder, CuNi alloy has constraining force and barrier effects, and finally MgB2 grains of the wire are refined, the connectivity between the grains is improved, and the current-carrying performance is improved.

The utility model discloses a square cabin with high electromagnetic shielding effectiveness. Conductive shielding cloth is adhered to the inner surface of each cabin plate of the square cabin; a metal gasket is arranged between the window and the cabin plate, and the metal gasket comprises silver-plated brass and a monel alloy woven wire mesh which are stacked in the direction from the cabin plate to the window; sealing grooves are formed in the door opening frame and the door frame of the cabin door, shielding sealing strips are filled in the sealing grooves, and each shielding sealing strip comprises a rubber core and a tin-plated phosphor bronze wire mesh wrapping the rubber core. On the basis that an original shelter structure is not changed or damaged, shielding effectiveness treatment is conducted on the assembling and matching positions of doors and windows of the shelter in a targeted mode, and therefore the overall shielding effectiveness of the shelter is improved.

The application provides a monolayer graphene single crystal copper wire material and a preparation method thereof. A vertical roll-to-roll technology is used to fasten the copper wire to a winding shaft of a lower unwinding chamber, so that the starting end of the copper wire passes through a tubular furnace body from bottom to top and is fixed to a winding shaft of an upper winding chamber, a tension in a specific range is applied at a winding end, the winding speed is 10 mm / min-100 mm / min, a specific temperature gradient is applied along the running direction of the copper wire, the growth of the copper single crystal grains is promoted, carbon source gas is introduced into the chamber, the growth of graphene on the surface of the copper wire is carried out through a chemical vapor deposition method, and the monolayer graphene single crystal copper wire material is obtained after continuous growth. In the process, the single crystallization of the copper wire and the coating of graphene on the surface of the copper wire are simultaneously realized, and the conductivity of the prepared monolayer graphene single crystal copper wire material is greatly improved compared with that of the original copper wire.

The invention discloses a welding process for surfacing a Monel welding wire on the surface of low alloy steel, and belongs to the field of hot wire TIG surfacing. The invention aims to solve the problem that welding slag is easy to generate when a Monel welding wire is subjected to surfacing on low-alloy pressure vessel steel. According to the method, a hot wire TIG welding method is used, welding is conducted in the vertical upper welding direction, pure nickel metal is selected as a transition layer material between low-alloy pressure vessel steel and a Monel cladding layer, accurate control over the interlayer temperature is achieved by effectively controlling welding process parameters and accurately adjusting welding heat input, and the welding quality is improved. A Ni-Fe system is formed between the pure nickel welding wire and the low-alloy pressure vessel steel, and the pure nickel welding wire and the low-alloy pressure vessel steel have good intersolubility and compatibility; and the Fe content is low, so that the problem of incompatibility of Fe and Cu is effectively avoided, and low-melting-point eutectic substances which are easy to cause welding slag are not easy to generate. And meanwhile, the viscosity, surface tension and fluidity of the molten pool are more uniform and controllable, stable escape of gas and impurities is facilitated, and the slag inclusion tendency is reduced. The overall metallurgical reaction is stable, and welding slag is eliminated.

This invention discloses a method for preparing 3-pentafluoroethyl-4-trifluoromethyl-dodecylhexane by electrolytic fluorination of hexafluoropropylene trimer, relating to the field of organofluorine chemistry. This method uses anhydrous hydrogen fluoride as both solvent and fluorine source, and performs electrolytic fluorination in a nickel or Monel alloy electrolytic cell. By optimizing the current density, voltage, temperature, and reaction time, the fluorination selectivity is improved, the formation of byproducts is reduced, and the target product is purified by distillation. This method is stable, highly controllable, and suitable for industrial production.

The application belongs to the technical field of superconducting materials, and discloses a high-performance MgB2 superconducting wire and a preparation method thereof. The method comprises the following steps: firstly, uniformly mixing nano-Mg alloy powder and B powder in an inert gas atmosphere according to an atomic number ratio of Mg:B=1:2; secondly, compounding a high-purity Nb rod, a CuNi alloy tube and an oxygen-free Cu tube into an Nb / CuNi / Cu alloy rod, processing deep holes, and then making a single-core wire by loading the mixed powder; thirdly, assembling the single-core wire into a Monel alloy tube, processing into a multi-core composite wire, and obtaining the high-performance MgB2 superconducting wire through high-temperature phase formation heat treatment. The metal elements in the nano-Mg alloy powder can generate metal borides, and the CuNi alloy has both constraint and barrier effects, so that the MgB2 grains of the wire are refined, the connectivity between the grains is improved, and the current-carrying performance is improved.

A solid oxide fuel cell (SOFC) system included high thermal conductivity materials such as copper to increase thermal energy transfer by thermal conduction. The copper is protected from oxidation by nickel electroplating and protected from thermal damage by providing Hastelloy liners inside combustion chambers. Monel elements are used in the incoming air conduits to prevent cathode poisoning.

The utility model discloses a kind of for measuring monel alloy corrosion depth's ultrasonic detector, it is related to monel alloy measurement technical field, including first adjusting frame, second adjusting frame and detection component, the top vertical connection of first adjusting frame is equipped with second adjusting frame, the detection component is connected in one side of second adjusting frame.The utility model can effectively reduce the influence of external vibration on detection accuracy in the measurement process by setting first adjusting frame, moving platform is driven first screw rod to realize horizontal displacement by first servo motor, by setting second adjusting frame, lifting frame is accurately vertically moved along second screw rod under the drive of second servo motor, and the three-dimensional space adjusting system is formed by the cooperation of the two, so that detection component can accurately cover alloy surface any corrosion area, and the ultrasonic detection main body of detection component is realized angle fine adjustment by ratchet shaft.

The invention relates to a preparation method of fluoromethane, which comprises the following steps: preheating a micro-channel reactor, and carrying out catalytic reaction on chloromethane and anhydrous hydrogen fluoride in the micro-channel reactor by using a catalyst under the conditions that the temperature is 450-500 DEG C and the retention time is 10-30 seconds. The diameter of the micro-channel reactor is 0.5-2mm, the micro-channel reactor is made of a monel or nickel material, the length-diameter ratio of the micro-channel reactor is greater than or equal to 10: 1, and the number of the micro-channel reactor block groups is 5-10. The hydrogen fluoride conversion rate per pass is improved, and the content of raw material accumulation byproducts is reduced.

The utility model relates to the related technical field of high-temperature-resistant corrugated pipes, in particular to a monel 400 material high-temperature-resistant corrugated pipe which comprises a pipe connecting end, a sealing plate, a nickel-copper alloy corrugated pipe and a sealing assembly, the sealing end of the pipe connecting end is fixedly connected with the sealing plate, the nickel-copper alloy corrugated pipe is arranged at the installation position of the sealing plate, and the sealing assembly is fixedly connected with the nickel-copper alloy corrugated pipe. According to the high-temperature-resistant corrugated pipe, the built-in nickel-copper alloy pipe and the nickel-copper alloy corrugated pipe are of a double-layer structure, after the nickel-copper alloy corrugated pipe is abraded, the built-in nickel-copper alloy pipe can still have the high-temperature-resistant effect, and due to the double-layer built-in nickel-copper alloy pipe and the double-layer nickel-copper alloy corrugated pipe, the abrasion resistance of materials adopted by the high-temperature-resistant corrugated pipe can be improved; high-temperature-resistant sealing can still be conducted after abrasion in the application field, the high-temperature-resistant degree of the high-temperature-resistant corrugated pipe can be improved through the built-in nickel-copper alloy pipe and the nickel-copper alloy corrugated pipe, the number of times of regular replacement is reduced, and the replacement cost of the high-temperature-resistant corrugated pipe is reduced.