14 results about "Inconel" patented technology

This invention discloses a polishing method and apparatus for nickel-based alloys based on photocatalysis and photothickening synergy. It achieves dual-driven processing by simultaneously triggering photocatalytic workpiece surface modification and photo-triggered thickening of the polishing slurry through an integrated dual-light system, realizing surface softening and medium thickening. Composite abrasive particles loaded with TiO2 / ZnO photocatalysts form a low-hardness oxide layer on the nickel-based alloy surface under ultraviolet light irradiation, reducing processing resistance. Precise viscosity control of the polishing slurry is achieved through azobenzene / cinnamic acid photochromic molecules, combined with shear-induced particle agglomeration to form a dual thickening system, improving viscosity stability. This invention solves the technical pain points of work hardening in nickel-based alloys, large viscosity fluctuations in traditional shear-thickening polishing slurries, and poor processing uniformity, improving processing efficiency and workpiece surface quality. It is suitable for efficient and precise machining of difficult-to-machine nickel-based alloys such as Inconel 718 and GH4169.

The application relates to the technical field of inconel steel production, in particular to high-strength inconel steel and a preparation method thereof. The inconel steel is composed of the following chemical components in percentage by weight: C: 0.04%-0.08%, Si:<0.5%, Mn: 0.2%-0.5%, P<=0.02%, S<=0.006%, Mo: 0.3%-0.85%, Ni: 35.5%-36.5%, Al: 1.3%-1.6%, Ti: 1.3%-1.7%, W: 0.3%-0.5%, Nb: 0.4%-0.6%, and the rest is Fe and impurity elements. The inconel steel manufactured by the application has a tensile strength of greater than or equal to 920 MPa, a yield strength of greater than or equal to 580 MPa, an elongation of greater than or equal to 8, a hardness of greater than or equal to 340 HV, and an expansion coefficient of 2.7-3.2*10-6 / DEG C. The application effectively solves the problems of coarse columnar crystal, low strength and easy crack of inconel alloy, improves the strength and crack sensitivity of the inconel steel through alloying and electromagnetic stirring, can not only improve the strength of the alloy, but also stabilize the expansion coefficient of the alloy, reduces the segregation and shrinkage hole phenomenon, and further improves the strength of the alloy.

This invention discloses a metal flux-cored welding wire for wind turbines, comprising flux powder and a welding sheath. The flux powder is composed of the following components: Ni: 58%-80%, Cr: 10%-16%, Mo: 4%-12%, Nb: 1%-3%, Fe: 2%-14%, C: 0.1%-0.2%, Mn: 0.2%-0.5%, Si: 0.2%-0.5%, with the sum of the mass percentages of the above components being 100%. The welding sheath is made of Inconel 718 alloy strip. This invention also discloses a method for preparing and applying the metal flux-cored welding wire for wind turbines. This invention solves the problem of pitting corrosion and abrasive wear on the surface of high-speed gears in existing wind turbines, particularly in environments with high corrosion resistance requirements, such as offshore and desert environments with high wear resistance requirements, resulting in corrosion pits and wear microcracks.

This invention relates to the field of integrated molding in the low-to-intermediate temperature range of aero-engines, specifically to a method for constructing a "sandwich structure" to prevent cracking. This invention combines laser-directed energy deposition technology with gradient structure transition design. Through precise control of process parameters and synchronous powder feeding from multiple powder bins, a dual-interface "sandwich structure" of "TC4 matrix - gradient transition structure - Inconel 718 material" can be successfully constructed, achieving integrated molding of heterogeneous materials. The "sandwich structure" designed in this invention can alleviate stress concentration caused by drastic compositional changes, reduce cracking tendency, achieve good metallurgical bonding between TC4 and Inconel 718, and solve problems such as easy cracking failure and poor load-bearing capacity in heterogeneous material connections. This invention features a reasonable structural design, a simple and controllable manufacturing process, and produces a product with excellent performance, facilitating industrial application.

The application discloses a method for improving hydrogen embrittlement resistance of iron-based superalloy by grain boundary regulation and application thereof. The application uses iron-based superalloy powder containing trace elements as raw material, and regulates hydrogen embrittlement resistance of the iron-based superalloy by laser powder bed melting process combined with vacuum sealing tube treatment and five-step heat treatment process. The first three steps are high-temperature heat treatment, and the last two steps are low-temperature heat treatment. The hydrogen embrittlement resistant iron-based superalloy obtained by the process has high strength and plasticity matching at room temperature and 600 DEG C, and has small elongation loss after hydrogen charging, and the hydrogen embrittlement resistance is significantly better than that of Inconel 718 nickel-based alloy. The process regulates the grain boundary type and element distribution in the alloy through multi-stage synergistic regulation, not only significantly improves the comprehensive mechanical properties of the material, but also endows the material with excellent hydrogen embrittlement resistance, can effectively meet the strict requirements of liquid hydrogen rocket engine nozzle and key parts of aviation system on high reliability, long service life and extreme environment adaptability, and has wide application prospect.

The application provides an Inconel 617 nickel-based alloy suitable for additive manufacturing and having good mechanical properties and a preparation method thereof. The Inconel 617 nickel-based alloy suitable for additive manufacturing and having good mechanical properties has a component range expressed in atomic percentage, and the component range includes: Ni 50.0-60.0%, Cr 20.0-24.0%, Co 10.0-14.0%, Mo 8.0-10.0%, Al 0.6-1.5%, X 0.01-10%, wherein X is one or more of Ti, Fe, Cu, Mn, C and Si. The application controls the content and proportion of key elements of the Inconel 617 alloy, optimizes the solidification characteristics, phase transformation behavior and thermal physical properties of the alloy, significantly improves the additive manufacturing process window of the alloy and inhibits crack generation. The solid solution elements such as Cr, Co and Mo can effectively distort the crystal lattice, hinder the dislocation movement, enhance the deformation resistance, improve the yield strength and tensile strength of the matrix and thus improve the density and mechanical properties of the alloy.

This application provides an electropolishing method for Invar alloy substrates, specifically tailored to the surface characteristics of Invar alloy substrates thinned by ferric chloride reduction. The method involves using the Invar alloy substrate to be treated as the anode and a pure lead plate as the cathode, simultaneously immersing both the anode and cathode in an electrolytic tank containing an electrolyte for electropolishing. The electrolyte comprises phosphoric acid, sulfuric acid, malic acid, ethylene glycol, sodium dodecylbenzenesulfonate, and deionized water in a volume ratio of 6:1:1:1:0.5:0.5. Electropolishing the Invar alloy substrate thinned by ferric chloride using the above electrolyte composition and ratio yields an Invar alloy substrate with excellent surface quality. After polishing, the surface gloss of the Invar alloy substrate is increased to ≥92 GU, exhibiting a uniform and bright mirror-like effect.

Metal(s) (including various alloys, such as INCONEL® superalloys) are characterized by having carbon disposed within the metal lattice structure thereof. The carbon is primarily, or entirely, present at interstitial sites of the metal lattice, and may be present in amounts ranging from about 1.5 wt % to about 90 wt %. Carbon may be present in the form of graphene, which may be characterized as one or more coherent, planar layers of graphene. The carbon, moreover, forms non-polar covalent bonds with both metal atoms of the lattice and other carbon atoms present in the lattice. This facilitates substantially homogeneous dispersal of the carbon throughout the resultant material, conveying unique and advantageous properties such as strength-to-weight ratio, density, mechanical toughness, sheer strength, flex strength, hardness, anti-corrosiveness, electrical and / or thermal conductivity, etc. as described herein. In some approaches, the composition of matter may be powderized, or the powder may be pelletized.

The application provides an inconel alloy foil and a preparation method thereof, and comprises the following steps: according to a preset alloy component ratio, feeding refined materials of each component of the alloy into a vacuum melting furnace to perform vacuum melting, and preparing a molten metal obtained by the vacuum melting into an inconel alloy cast strip with a target thickness through a plane flow casting process; cooling the plane flow cast inconel alloy extremely thin strip of the inconel alloy cast strip to room temperature under a protective atmosphere to obtain a room temperature cast strip; performing one rolling pass of cold finish rolling on the extremely thin strip of the room temperature cast strip through a rolling mill to obtain a semi-finished foil; and performing heat treatment on the semi-finished foil. The application can solve the problems in the prior art, such as a long and complicated process flow, a low yield, a waste of a large amount of resources and energy, poor uniformity of a prepared finished product, and poor mechanical properties.

Provided is a method for manufacturing a metal lamination-shaped article in which creep rupture strength satisfies a standard value in Inconel (registered trademark) 718 of a Ni-based alloy. A method for manufacturing a metal lamination-shaped article consisting of a Ni-based alloy includes: a homogenizing treatment step (1) of performing a homogenizing treatment on a metal lamination-shaped article consisting of the Ni-based alloy containing 50% by mass to 55% by mass of Ni, 17% by mass to 21% by mass of Cr, 2.8% by mass to 3.3% by mass of Mo, 4.75% by mass to 5.5% by mass of a total of Nb and Ta, 0.65% by mass to 1.15% by mass of Ti, 0.2% by mass to 0.8% by mass of Al, and the remainder consisting of Fe and inevitable impurities at 1,050°C or higher and 1,250°C or lower; a solutionizing treatment step (2) of performing a solutionizing treatment on the metal lamination-shaped article after the homogenizing treatment step (1); and an aging step (3) of performing an aging treatment at 650°C or higher and 720°C or lower after the solutionizing treatment step (2).

The utility model discloses a kind of low stress welding frames of invar alloy optical device, including the support base of support welding frame, the telescopic rod of relative motion is provided on the support base, the fixed plate is fixedly connected in telescopic rod top, the fixed plate side is fixedly connected with positioning cylinder, the connecting plate is sleeved on the positioning cylinder, the transmission rod is fixedly connected on the connecting plate one side. The utility model is through the big right angle plate and small right angle plate of being equipped, it is convenient to clamp the object of welding, simultaneously, by setting connecting plate, fixed plate and reversing motor one, it is convenient to rotate with object, adjust object surface angle, subsequent welding is facilitated to it, by setting the support base and telescopic rod of two-way movement in clamping mechanism bottom, it is convenient to adjust the height of welding object and clamping intensity, to make the low stress welding frame of this invar alloy optical device have the effect of adjustment, and increase the welding efficiency of laser to object.

The application belongs to the technical field of preparation of inconel alloy rod, and particularly relates to a preparation method of high-strength, high-plasticity and low-expansion inconel alloy rod, which comprises the following steps: according to the chemical composition requirements of the target inconel alloy rod, raw materials are weighed and proportioned, a first part of deoxidizing materials is used to heat smelting materials in a vacuum environment to obtain molten steel, a second part of the deoxidizing materials is used to refine the molten steel to obtain purified molten steel, alloying materials are added into the purified molten steel to obtain a steel ingot, and the steel ingot is heated, forged and cooled to obtain the inconel alloy rod. Through three times of molten steel purification, the oxygen content and the inclusion content in the alloy are effectively reduced, the rare earth Ce is used to form stable compounds with oxygen, sulfur and other elements by virtue of the strong affinity, and the stable compounds are removed by floating, and the as-cast grain growth is effectively inhibited, so that the strength and the plasticity are simultaneously improved on the basis of maintaining the low expansion coefficient.

The application discloses a device and a method for blue laser enhanced abrasive grain flow composite electrochemical polishing of Inconel 718 alloy, and is characterized in that the device comprises a blue laser, a direct-current electrolysis power supply, a cathode clamp, an anode clamp, an electrolyte tank, a reaction tank, a workpiece support table and a two-dimensional fast motion sliding table; the device adopts blue laser lateral assistance, adds abrasive grains in the electrolyte, accelerates the efficiency of the jet electrochemical polishing, simultaneously irradiates through the lateral synchronous assistance of the laser, and simultaneously realizes the two-dimensional sliding table fast motion, so that the lap mark problem existing in the traditional jet polishing is solved, the effect of selective polishing is realized through the jet, the polishing efficiency of the Inconel 718 alloy is effectively improved, the selective and efficient mirror surface polishing effect is realized, the roughness is obviously reduced, the device is safe and feasible, and can be applied to the polishing of high-temperature alloys in future industries.