6 results about "Monel" patented technology

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 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 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.

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.

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 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.