330 results about "Rhenium" patented technology

The invention belongs to the technical field of scattered metal recovery, and particularly relates to a recycling method of tungsten-rhenium alloy waste. The tungsten-rhenium alloy is a solid solution strengthened alloy which takes tungsten element as a matrix and consists of the tungsten element and rhenium element, and has the characteristics of high melting point, high strength and high hardness. As the price is high, it is very necessary to comprehensively utilize the tungsten-rhenium alloy waste. The invention discloses a recycling method of tungsten-rhenium alloy waste. Firstly, tungsten-rhenium alloy waste is cleaned, dried and smashed, and waste powder is formed; then dispersing the waste material powder into water dissolved with ammonium metatungstate and a surfactant; then, carrying out spray drying to form mixed powder; and finally, the mixed powder is subjected to roasting and hydrogen reduction, and tungsten-rhenium alloy powder with the metal rhenium content lower than the metal rhenium content in the tungsten-rhenium alloy waste is formed. Compared with an existing tungsten-rhenium alloy waste recycling method, the recycling method has the advantages of being simple in process, low in energy consumption, small in loss and good in uniformity.

The invention belongs to the technical field of rhenium alloy materials, and particularly relates to a high-strength rhenium alloy material and a preparation method thereof. The rhenium alloy material is prepared from the following raw materials in percentage by mass: 12 to 24 weight percent of molybdenum, 6 to 9 weight percent of niobium, 2 to 5 weight percent of cobalt, 1 to 3 weight percent of tungsten, 0.5 to 1.2 weight percent of modified tantalum carbide, 3 to 6 weight percent of high-entropy rare earth and the balance of rhenium and other inevitable impurities. The modified tantalum carbide is prepared by the following preparation process: adding tantalum chloride, zirconium oxychloride and phenolic resin into a mixed solution of acetylacetone and n-butyl alcohol, stirring for 1-2 hours under a heating condition, dropwise adding ammonia water, continuously stirring for 0.5-1 hour, and drying to obtain a precursor; calcining the precursor, and cooling to obtain the modified tantalum carbide. The rhenium alloy prepared through the method has high hardness, good bending strength and excellent high-temperature mechanical property.

The invention relates to the technical field of non-ferrous metal hydrometallurgy, in particular to a method for separating molybdenum and rhenium from molybdenum smelting waste acid by using resin, which comprises the following steps: adding a phosphorus source into the molybdenum smelting waste acid, and then adjusting the acidity to an acid environment in which the hydrogen ion concentration is greater than or equal to 1mol / L; molybdenum and rhenium in the molybdenum smelting waste acid with the acidity adjusted are separated through weak-base anion exchange resin, and a rhenium product with the lower molybdenum impurity content is obtained. According to the method, the phosphorus source is added into the molybdenum smelting waste acid, so that phosphate ions are hydrolyzed from the phosphorus source, molybdenum can be effectively prevented from being adsorbed by the alkalescent anion exchange resin, the selectivity of the anion exchange resin to rhenium is greatly improved, and the rhenium recovery rate and the molybdenum-rhenium separation effect are improved; the problems that in the prior art, ion exchange resin is difficult to adapt to molybdenum-rhenium separation under the high molybdenum concentration, the rhenium recovery rate is low, the rhenium-molybdenum separation effect is poor, and a high-molybdenum-concentration solution cannot be treated are solved.

The invention provides a high-temperature-resistant creep-resistant tungsten alloy, and relates to the technical field of powder metallurgy, the tungsten alloy comprises, by mass, 3-8 wt% of Re, 0.2-1 wt% of carbide, 0.1-0.5 wt% of boride, and the balance tungsten and inevitable impurities; the carbide is selected from one or more of TiC, ZrC, TaC and HfC; the boride is selected from one or more of TiB2 (titanium diboride), HfB2 (hafnium diboride) and ZrB2 (zirconium diboride). The high-temperature-resistant creep-resistant tungsten alloy is prepared by adding low-content rhenium, carbide and boride into pure tungsten and adopting a unique preparation method, and the technical defects that an existing tungsten-rhenium alloy is insufficient in strength and creep resistance at the ultrahigh temperature (larger than or equal to 2000 DEG C), and a traditional multi-pass processing technology is complex are overcome.

In a general aspect, a flexible cable communicates electromagnetic signals in a cryogenic system. In some aspects, the flexible cable includes a signal layer and a ground layer. The signal layer includes signal lines embedded in adhesive material. Each signal line includes a multilayer structure. The multilayer structure includes a layer of non-superconducting material and a layer of rhenium metal. The ground layer is laminated to the signal layer.

The invention discloses a method for extracting gallium, germanium and rhenium from coal processing byproducts. The method comprises the following steps: crushing and grinding coal processing byproducts, mixing the coal processing byproducts with chemicals, and baking at high temperature; after the coal processing byproducts are completely cooled, leaching and filtering the coal processing byproducts by using ultrapure water or a dilute acid solution to obtain a leaching solution containing gallium, germanium and rhenium; the method comprises the following steps: extracting, concentrating and evaporating to obtain a gallium-germanium-rhenium concentrated solution, preliminarily separating a germanium solution, a gallium solution and a rhenium solution respectively by a chlorination distillation method and a chemical precipitation method, and finally purifying the preliminarily separated gallium-germanium-rhenium solution to obtain high-purity gallium, germanium and rhenium products. By adopting the method, the extraction efficiency of the Gallium-Gallium-Gallium-Gallium is improved, the process is environment-friendly, the economic benefit is remarkable, and the comprehensive utilization of the coal associated solid waste is further realized.

Provided here are methods for producing a shaped metal-supported catalyst. One such method includes the steps of mixing a support hydroxide with an aqueous mixture of an active metal compound to form a malleable mixture of an active metal incorporated support hydroxide, passing the malleable mixture through a molding device to produce a shaped metal-supported wet catalyst; and drying and calcining the shaped metal-supported wet catalyst. The support hydroxide contains one or more of aluminium hydroxide, silica hydroxide, zirconia hydroxide, cerium hydroxide, titanium hydroxide, lanthanum hydroxide, gallium hydroxide, or niobium hydroxide. The active metal compound can be one or more of vanadium, niobium, tantalum, chromium, molybdenum, tungsten, manganese, technetium, and rhenium.

The invention discloses a rapidly sintered rhenium plate and a preparation method thereof, and relates to the field of powder metallurgy. The preparation method comprises the following steps: putting a mold filled with rhenium powder into spark plasma sintering equipment, vacuumizing, introducing hydrogen-containing mixed gas, carrying out a gradient pressurization-pulse sintering process, heating the rhenium powder to a target temperature at a rate of 80-200 DEG C / min, carrying out heat preservation, synchronously applying axial pressure, controlling the pressure to be 8-12 Mpa when the temperature is less than 1000 DEG C, controlling the pressure to be greater than or equal to 15 Mpa when the temperature is greater than or equal to 1000 DEG C, and carrying out sintering for 2-3 hours; and cooling, demolding, reducing and annealing in a hydrogen atmosphere, and grinding to obtain the rhenium plate. Rapid sintering densification of pure rhenium is achieved through the spark plasma sintering technology, the temperature rising time is greatly shortened, step pressure rising is carried out before the nucleation stage of heating sintering, it is avoided that moving filling of rhenium powder is hindered by high pressure at the low temperature, size homogenization is promoted, and the prepared rhenium plate is good in uniformity and high in density and purity; and the oxygen content is low.

A machine tool, a machine component, a cutting blade, a drill bit, a grinding device, or a shredding / crushing device that is at least partially formed of a metal alloy that includes rhenium; said metal alloy includes a) at least 5 awt. % rhenium or b) at least 5 wt. % rhenium.

The invention discloses antioxidant heat-resistant cast steel and a preparation method thereof. The cast steel comprises the following components in percentage by mass: 0.08-0.15% of C; 0.1% to 0.8% of Zr; 0.05% to 0.8% of Hf; 0.1% to 0.8% of Re; 8.0% to 11.0% of Cr; 0.5% to 2.5% of Ni; 1.0% to 2.0% of Mo; 0 < Si < = 0.5%; 0 < Mn < = 1.0%; 0 < P < = 0.025%; 0 < S < = 0.015%. According to the antioxidant heat-resistant cast steel added with zirconium, hafnium and rhenium and the electroslag remelting preparation method of the antioxidant heat-resistant cast steel, the grain size of heat-resistant steel is larger than or equal to the ASTM7 grade; the service life is not less than 500 hours under the conditions of 650 DEG C and 170 MPa, the service life is not less than 150 hours under the conditions of 700 DEG C and 100 MPa, and the weight gain rate is not more than 0.1 mg / cm < 2 > after oxidation for 100 hours at 700 DEG C.

The invention relates to the technical field of copper smelting, in particular to an MOF composite membrane capable of selectively adsorbing rhenium and a preparation method and application of the MOF composite membrane. The preparation method of the MOF composite membrane capable of selectively adsorbing rhenium, provided by the invention, comprises the following steps: dispersing a sulfonic acid functionalized UiO-66 type metal organic framework material in a polyvinylidene fluoride solution to obtain a metal organic framework material dispersion liquid; mixing the metal organic framework material dispersion liquid with a cross-linking agent, carrying out a cross-linking reaction, and then mixing the obtained reaction liquid with an acid-resistant ionic liquid to obtain a spinning solution; performing electrostatic spinning on the spinning solution to obtain a silk membrane; and dipping the silk membrane in an amino silane coupling agent solution, and curing to obtain the MOF composite membrane capable of selectively adsorbing rhenium. The MOF composite membrane capable of selectively adsorbing rhenium provided by the invention can selectively adsorb rhenium in waste acid treatment, so that selective separation of rhenium is realized, and meanwhile, the membrane has excellent acid tolerance.

A grease composition that includes at least an oil-based medium, a thickener, and a fullerene-like nano-structure. The fullerene-like nano-structure includes a plurality of layers each comprised of a metal chalcogenide composition has a molecular formula of MX2, where M is a metallic element selected from the group consisting of titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), zirconium (Zr), niobium (Nb), molybdenum (Mo), technetium (Tc), ruthenium (Ru), rhodium (Rh), palladium (Pd), silver (Ag), cadmium (Cd), hafnium (Hf), tantalum (Ta), tungsten (W), rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), gold (Au), mercury (Hg) and combinations thereof, and X is a chalcogen element selected from the group consisting of sulfur (S), selenium (Se), tellurium (Te), oxygen (O) and combinations thereof.

The invention discloses a preparation method of a layered heterostructure second phase dispersion strengthened tungsten-rhenium fine grain alloy or molybdenum-rhenium fine grain alloy, and relates to the technical field of metal material preparation. The preparation method comprises the following steps: firstly, preparing composite precursor powder by adopting an in-situ chemical method, and carrying out three-step reduction, low-temperature sintering, multi-pass hot working and annealing treatment to obtain the target alloy. The in-situ chemical method enables the powder to be fine in grain, uniform in second phase distribution and high in sintering activity; oxidation volatilization of rhenium is avoided through three-step reduction, and the product purity is guaranteed; low-temperature sintering reduces oxygen content and impurity influence, and grains are refined; and the layered heterostructure is realized through multi-pass hot working and annealing. The method is simple in process, low in cost, low in energy consumption and high in yield, and the prepared alloy material has great application value in the fields of nuclear reactor jackets, spacecraft thermal protection and the like.

A process for producing amines by reductive amination, the process includes introducing a feed stream, the feed stream comprising an amino alcohol and a reducing agent, and hydrogen in a reaction zone of a reactor, and contacting the feed stream with a catalyst in the reaction zone. A hydrogen flow rate into the reaction zone is adjusted, and a product stream comprising ethyleneamines is extracted. The catalyst includes a carrier component selected from alumina, silica, and combinations thereof; and an active component having a first metal, a second metal, and a third metal. The first metal is selected from cobalt, nickel, and copper, the second metal is selected from rhenium, ruthenium, chromium, zinc, sodium, calcium, magnesium, strontium, lithium, potassium, barium, cesium, lanthanum, tungsten, iron, silver, titanium, manganese, aluminum, rhodium, platinum, palladium, iridium, and combinations thereof, and the third metal is niobium.

The application discloses a high specific strength high-elongation 6-series aluminum alloy anti-collision beam, which comprises a base, the upper side walls of the base are symmetrically fixedly connected with vertical plates, the opposite sides of the two vertical plates are fixedly connected with support plates, the upper side walls of the two support plates are fixedly connected with a smelting furnace, a stirring mechanism is arranged on the smelting furnace, a feeding port is formed in the upper side wall of the smelting furnace, and arc-shaped blocks are arranged on the inner bottom wall of the smelting furnace. The anti-collision beam combines the advantages of 6082 alloy and 7003 alloy, has good extrusion forming performance, the strength is greater than 340 MPa, the elongation is greater than or equal to 15%, and the elongation is improved by more than 10% compared with the 6082 alloy. The rare earth rhenium is added to refine the grains and improve the alloy strength, and the 6-series profile is subjected to double-stage aging strengthening, so that the elongation of the alloy is further improved.

Provided herein are alkali metal or rhenium modified alumina catalysts, methods for their preparation, and methods for their use in double bond isomerization of aliphatic light internal olefins to aliphatic alpha-olefins and in reverse isomerization reactions.

The invention belongs to the technical field of powder metallurgy, and particularly relates to a preparation method of a high-density molybdenum-rhenium alloy. The compactness of the molybdenum-rhenium alloy mainly refers to the number and the size of internal pores, cracks and other defects of the molybdenum-rhenium alloy. The high compactness means that the internal structure of the molybdenum-rhenium alloy is uniform and continuous, the number of defects is extremely small, the strength, plasticity, toughness, thermal conductivity, electrical conductivity, corrosion resistance, high-temperature stability and fatigue life are improved, and premature failure, leakage, corrosion and performance degradation caused by pores are avoided. According to the preparation method of the high-density molybdenum-rhenium alloy, on one hand, in the preparation process of mixed crystals of rhenium salt and molybdenum salt, the particle size and particle size distribution of the mixed crystals are controlled through technical means, and the problem that the mixed crystals are distributed unevenly is avoided; and on the other hand, formation of internal pores and cracks is eliminated through technical means in the molybdenum-rhenium alloy powder compression molding process. And finally, the high-density molybdenum-rhenium alloy is prepared.

A tungsten alloy wire is to be used in an environment in which the tungsten alloy wire at least once undergoes a thermal effect at a temperature of at least 1100 degrees Celsius. The tungsten alloy wire includes rhenium with a content of at least 5 wt % and at most 26 wt %.

The application provides a catalyst, a preparation method and application thereof. The catalyst comprises a porous substrate and an auxiliary agent arranged on at least part of the surface of the porous substrate, the porous substrate comprises a Raney cobalt material, and the auxiliary agent comprises metallic rhenium, an alkali metal and an alkaline earth metal; wherein the Raney cobalt material comprises a Co-S chemical bond. The catalyst provided by the application has excellent activity, and can effectively improve the conversion rate of dinitrile compounds and the selectivity of diamines.

A method for producing 2,5-dimethylfuran according to one embodiment of the present invention includes a step for reacting a furan compound having a specific structure with hydrogen in a non-aqueous solvent in the presence of a hydrogenation catalyst. In this method for producing 2,5-dimethylfuran, the hydrogenation catalyst includes at least one type selected from among a first component group and at least one type selected from among a second component group. The first component group includes chromium, molybdenum, manganese, rhenium, ruthenium, rhodium, iridium, nickel, palladium, platinum, copper, zinc, and the like. The second component group includes aluminum oxide, silicon oxide, titanium oxide, zirconium oxide, carbon, and the like.

A platinum alloy composition is composed of, in weight percent, 0.0 to 5.0 gold, 0.0 to 2.5 cobalt, 0.0 to 3.0 copper, 0.0 to 5.0 iron, 0.0 to 2.75 gallium, 0.0 to 3.0 indium, 0.0 to 5.0 iridium, 0.0 to 5.0 manganese, 0.0 to 5.0 palladium, 0.0 to 5.0 rhenium, 0.0 to 5.5 rhodium, 0.0 to 5.0 ruthenium, 0.0 to 3.0 tin, 0.0 to 5.0 silver, and incidental impurities, where the sum of platinum and iridium is 95.0 or more, and wherein the following formula is satisfied, in which the sum of platinum and iridium is 95.0 or more. WCo, WCu, WFe, WGa, WIn, WNi, WPd, WSn, WRh, WIr, WAu, WRu, WRe, WAg and WMn are respectively weight percentages of cobalt, copper, iron, gallium, indium, nickel, palladium, tin, rhodium, iridium, gold, ruthenium, rhenium, silver and manganese in the alloy, 60 + WPd * 2.5 + WRh * 3.4 + WIr * 6.455 + WIr * 16.6 + WNi * 16.9 + WMn * 18.48 + WCo * 18.69 + WFe * 21.879 + WIn * 29 + WSn * 28.207 + WGa * 42.379 + WAg * 9.0 > = 130, and wherein the following conditions are satisfied, in which the weight percentages of cobalt, copper, iron -0.10406 * WAg-0. 1028 * WCo-0. 1201 * WCu-0. 2113 * WFe-0. 3368 * WGa-0. 1125 * WIn-0. 1639 * WNi-0. 0959 * WSn + 17.276261-0.20 * WMn + 0.0678 * WRu + 0.035 * WIr + 0.045 * WRh-0. 059 * WAu + 0.066 * WRe < = 17.1, and wherein the following formula is satisfied in which WCo, WCu, WFe, WGa, WIn, WNi, WPd, WSn, WMn, WRu, WIr, WRh, WAu, WAg and WRe are respectively aluminum, cobalt, copper, iron, gallium, indium, nickel, palladium

The invention discloses a metal ceramic material containing rare metal elements and a preparation method and application thereof.The metal ceramic material comprises a hard phase and a binding phase, the hard phase is bound through the binding phase, and the hard phase comprises a first black core, a second white core and gray ring layers wrapping the first black core and the second white core respectively; the grey ring layer and the second white core are each provided with rare metal elements in a solid solution mode, and the rare metal elements comprise the molybdenum element and the rhenium element. According to the preparation method of the metal ceramic material containing the rare metal elements, the production cost is low, the rhenium element is added in the form of MoRe alloy powder, pre-ball milling and combined sintering are conducted on the rhenium element and binding phase powder, Mo and Re in a binding phase and a hard phase are evenly distributed, a uniform organization structure is obtained, the abrasion resistance and toughness of metal ceramic are improved, and the service life of the metal ceramic material is prolonged. And the metal ceramic material has better reliability and durability in application.

The invention discloses a semiconductor cantilever needle, a cantilever needle processing device and a cantilever needle processing method, relates to the field of cantilever needles, and provides the following scheme aiming at the problem that the electrical property of the cantilever needle in the current market is influenced in the use process: the semiconductor cantilever needle comprises a metal raw material and a fusion agent, the metal raw materials comprise, by weight, 90% of tungsten, 3.2% of rhenium, 0.01% of potassium, 0.002% of iron, 0.0015% of aluminum, 0.003% of molybdenum, 0.0005% of arsenic / calcium / chromium / magnesium / manganese, 0.0005% of sodium / nickel / titanium / silicon / cobalt, 0.0002% of bismuth / cadmium / tin / copper / lead, 0.0005% of antimony, 0.0005% of rhodium, 0.0004% of ruthenium and 0.0005% of palladium. According to the semiconductor cantilever needle and the manufacturing method thereof, after metal elements such as rhodium, ruthenium and palladium are added into the material, the surface stress of the material is reduced, and the formation of an oxidation film is inhibited.

The utility model discloses a zero-response temperature measurement assembly resistant to high-speed thermal shock, and relates to the field of temperature measurement. According to the utility model, the problem that the fitting degree between the thermocouple wire temperature measuring point and the housing cannot be accurately ensured and the real-time accurate measurement is influenced because the temperature measuring point of the thermocouple wire is separated from the armored housing by a certain distance in the existing temperature measuring assembly is solved. A temperature sensitive assembly (2) is inserted in an armored protective tube (1) and is installed in the armored protective tube (1) through an installation assembly. The tungsten-rhenium thermocouple (2-3) is installed in the silicon nitride porcelain tube (2-2), the silicon nitride porcelain tube (2-2) is installed in the framework (2-1), the front portion of the tungsten-rhenium thermocouple (2-3) is welded into a sphere and then fixedly connected with the framework (2-1) into a whole in a welding mode, and the framework (2-1) is screwed at the bottom of the front end of the armored protection tube (1). The device is used for measuring the tail flame temperature of the high-speed aircraft.

In a general aspect, a flexible cable communicates electromagnetic signals in a cryogenic system. In some aspects, the flexible cable includes a signal layer and a ground layer. The signal layer includes signal lines embedded in adhesive material. Each signal line includes a multilayer structure. The multilayer structure includes a layer of non-superconducting material and a layer of rhenium metal. The ground layer is laminated to the signal layer.

The present invention relates to the technical field of metal additive manufacturing, and discloses a method for preparing molybdenum-rhenium alloy powder suitable for 3D printing. The method specifically comprises the following steps: step 1, weighing raw materials ammonium rhenate and molybdenum dioxide to prepare a slurry; step 2, spray drying and granulation to prepare spherical precursor granules; step 3, calcination and hydrogen reduction to prepare molybdenum-rhenium alloy intermediate powder; step 4, plasma spheroidization treatment to prepare spherical molybdenum-rhenium alloy powder. The present invention performs hydrogen reduction on the spray-dried precursor granules and can achieve a sintering effect. The intermediate powder after reduction retains the spherical morphology of the precursor and improves the cohesive strength. At the same time, the interior of the particles maintains a loose and porous structure, and can achieve stable powder feeding and improve heat energy absorption efficiency in a plasma torch environment. In actual production applications, it can effectively reduce energy consumption, improve spheroidization efficiency and sphericity.

The invention relates to a novel functional material for X-ray protection, in particular to a liquid metal flexible shielding material and a preparation method and application thereof. The material comprises liquid metal and solid metal, the liquid metal serves as a solvent to be filled in gaps of the solid metal, the liquid metal is gallium, gallium indium, gallium indium tin, gallium indium tin zinc or mercury, and the solid metal is selected from one or more of indium, tin, gold, platinum, iridium, zirconium, niobium, molybdenum, ruthenium, osmium, rhenium, rhodium, tungsten, antimony, palladium, tantalum, hafnium, lutetium, lead, ytterbium, thulium, bismuth, silver, erbium, holmium, dysprosium, terbium, gadolinium, samarium, neodymium, lanthanum, praseodymium, cerium and europium. On the basis of compounding of the liquid metal solvent and the solid metal solute based on the liquid metal combinatology, the liquid metal and the solid metal are jointly used for protecting X-ray radiation, the comprehensive performance of X-ray protection is improved, and meanwhile the variety and number range of selectable metal elements is widened.

The invention discloses a low-density low-rhenium nickel-based single-crystal high-temperature alloy which comprises the following chemical components in percentage by weight: 2.8 to 6 percent of chromium, 5.5 to 9 percent of cobalt, 4 to 7 percent of molybdenum, 4 to 6 percent of tungsten, 4 to 7 percent of tantalum, 4 to 7 percent of aluminum, 0.07 to 0.3 percent of hafnium, 2 to 4 percent of rhenium, 1.5 to 2.5 percent of ruthenium, 0 to 0.01 percent of yttrium and the balance of nickel. Wherein in percentage by weight, the content relation of the molybdenum and the tungsten is 0.7 lt; molybdenum / tungsten lt; the content relation of molybdenum and rhenium is that molybdenum / rhenium is greater than or equal to 1.1. The strength of the alloy is improved by increasing the content of molybdenum, the contents of tungsten and rhenium are reduced, precipitation of harmful phases is reduced by comprehensively regulating and controlling the proportion of elements in rows and columns, it is ensured that the creep life of the alloy reaches the fourth-generation single crystal level, meanwhile, the alloy has the room-temperature density not higher than 8.9 g / cm < 3 >, the high-temperature low-stress durability of the alloy reaches the typical fourth-generation single crystal high-temperature alloy level, and the service life of the alloy is prolonged. The method is suitable for manufacturing advanced aero-engines.

A tungsten-rhenium alloy powder mixing method for controlling the shrinkage rate during double-layer metal composite sintering relates to the technical field of preparation of target materials for medical CT tubes. The present invention mixes W-Re powders prepared by wet chemical method and solid-liquid mixing in different proportions, and explores the influence of different powder mixing ratios on the shrinkage rate through pre-sintering and sintering processes, thereby meeting the requirements of composite sintering for different shrinkage rates, and measures the sintering density. The results show that as the powder mixing composition continues to change, the sintering density of different powder mixing ratios also changes. As the proportion of tungsten-rhenium alloy powder prepared by wet chemical method continues to decrease, its linear shrinkage rate also gradually decreases, thereby meeting the requirements of the preparation industry for the shrinkage rate of tungsten-rhenium alloy.

The application discloses a kind of molybdenum-rhenium alloy gradient organization pipe based on pilger warm rolling and method, belong to metal material processing technical field, solve molybdenum-rhenium alloy pipe full cross section uniform fine grain cannot give consideration to room temperature mechanical property and high temperature creep resistance, axial composition gradient exists interface failure risk, rolling process deformation resistance is big and process is long and pilger rolling technique still has no initiative construction radial organization gradient train of thought etc. Core problem, including the following steps: S1, preparation pipe blank;S2, pipe blank pretreatment;S3, pilger rolling mill warm rolling;S4, annealing;S5, finishing.The application makes the plastic deformation degree of inner wall lower than outer wall (outer wall violent plastic deformation) by one pass warm rolling, and the deformation energy storage difference is converted into grain size difference after annealing treatment, so that radial gradient organization from outer wall fine grain to inner wall coarse grain transition is realized on the single cross section of pipe, which fundamentally changes the regulation and control train of thought of "eliminating organization unevenness, pursuing full cross section uniformity" of prior art.