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Foundry alloy for titanium alloys Invention can be used during titanium alloys manufacturing. The foundry alloy contains in wt %: vanadium 40-50, titanium 5-20, carbon 3-5, aluminium - rest. |
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Method of alloys manufacturing for aluminium alloys production Exothermic mixture of aluminium and titanium powders is prepared, then it is subjected to mechanical activation. Simultaneously briquettes of the pressed titanium chips are made. Mixture of powders and briquettes of the pressed titanium chips are simultaneously added to aluminium melt, its surface has cryolite, the melt is held for at least 30 minutes with periodic agitation. Ratio of stoichiometric mixture of powders and briquette of titanium chips is selected as 1/3 of powders mixture to 2/3 of titanium chips. |
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Method for obtaining aluminium-phosphorus alloy combination Method includes obtaining of aluminium-phosphorus ally in form of tablets of the following composition, wt %: phosphorus 1.5-3.5, iron 6.0-16, aluminium - balance. At that mixing of the aluminium granules and ferrophosphorus powder is performed in mill with rotation speed 60-250 rpm for 1-7 hours, and mixture components are cold pressed. The made tablets have diameter 20-100 mm, they are made by pressing with drying under force 100-5000 kg with free mixture filling on the hydraulic press. |
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Complex alloy for microalloying and deoxidation of iron based steel Complex alloy contains, wt %: boron 0.5-2.0, chrome 20-35, silicon 35-55, iron and impurities - the rest. |
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Proposed composition contains the following substances, in wt. %: Powder of additional alloy with rear-earth metal of cerium group 30-40, granulated calcium 12-15, granulated barium 8-10, fluorite and/or cryolite 5-10, aluminium powder 20-25, iron powder making the rest. |
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Addition alloy to produce casts from grey cast iron Addition alloy contains the following components, wt %: copper 45.0-65.0, tin 5.5-15.0, silicon 15.0-20.0, calcium 0.5-3.0, aluminium 0.1-1.0, barium 0.5-2.0, rare earth metals 1.0-3.0, iron - the rest. |
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Invention can be used in casting for production of casts with higher mechanical and auxiliary properties. Proposed composition contains the following substances, in wt %: Fine powder of heat-resistant compound including carbide, nitride, oxide, carbonitride, oxycarbonitride, boride 2-60, one or several powders of foundry alloys from the group consisting of ferrotitanium, ferrozirconium, ferroniobium, ferrovanadium making the rest. |
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Production of compacted iron modifier based on nano-dispersed powders Proposed method comprises mixing of cryolite and the mix of nano-dispersed powder of oxides of niobium, titanium, zirconium, tantalum with mixing agent and further compaction of said mix. Cross-linking agent represents aqueous solution of glyoxal (40%). Note here that obtained pasty mix is compacted by screw pelletiser to cylindrical pellets to be dried for 3 hours at 80°C at the following ratio of components, in wt %: cryolite - 79-81, niobium oxide - 3-4, titanium oxide - 3-4, zirconium oxide - 4-3, tantalum oxide - 1-2, aqueous solution of glyoxal (40%) - 5-7. |
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This process comprises preparation of the charge by mixing the titanium-bearing slag with aluminium and calcium-bearing material. The latter represents calcium fluoride and calcium, of calcium fluoride and calcium oxide, or calcium fluoride and the mix of calcium and calcium oxide. Here, the ratio between titanium dioxide, aluminium powder and calcium and/or between calcium oxide and calcium fluoride makes 1:(0.58-1.62):(0.28-1.1):(0.09-0.32). Besides, it includes reducing fusion of said slag at 1450-1750°C and separation of the alloy from said slag. |
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Invention relates to foundry and can be used for production of high-strength iron with globular graphite without structurally free cementite as-cast. Proposed alloy contains the following substances, in wt. %: rare earth metals - 10-20, silicon - 20-30, scandium - 1-3, aluminium making the rest. Foundry alloy comprises 1-3 wt. % of lanthanum in rare earth metal compound. |
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Invention relates to foundry and can be used for production of high-strength iron with globular graphite without structurally free cementite as-cast based on metalised pellets and steel wastes. Proposed agent contains components in the following ratio in wt. %: cerium - 7-10, lanthanum - 3.5-5.0, yttrium - 15-20, aluminium making the rest. |
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Chemical-electric method for production of aluminium-zirconium master alloys In the method anode galvanostatic polarisation of zirconium with current density of 0.5-4.0 mAcm-2 is carried out within 1-5 hours in the melted chlorides of alkali metals or a mixture of chlorides of alkali metals and alkali-earth metals, which contain melted aluminium or aluminium-magnesium alloy at a temperature of 700-750°C in argon environment. |
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Method for obtaining aluminium-scandium alloy combination Method for obtaining aluminium-scandium alloy combination involves aluminium melting, aluminothermic reduction of scandium from initial charge containing scandium fluoride, calcium chloride and sodium fluoride under cover flux and further exposure of the obtained molten metal. Prior to aluminothermic reduction the initial charge is placed into a melting pot and pre-heated to the temperature of 790°C, and then, it is added to molten aluminium and aluminothermic reduction is performed at the temperature of at least 830°C. After the molten metal exposure, separate pouring of salt and metal melt is performed. An initial charge containing the following component ratio, wt %, is used: scandium fluoride - 40-45; potassium chloride - 40-45; sodium fluoride is the rest. Pre-heating of the initial charge can be performed in a graphite melting pot pre-saturated with cryolite, or in a melting pot from glass carbon. |
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Modifying alloying bar al-sc-zr Alloying bar contains the following, wt %: scandium 0.8-1.5, zirconium 0.8-1.5; at least one of the following elements: manganese up to 0.10, chrome up to 0.10, titanium up to 0.10, molybdenum up to 0.10, iron up to 0.30, silicon up to 0.20, and aluminium is the rest. |
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Method for obtaining titanium-containing alloy for steel alloying Reaction powder mixture containing 45-88 wt % of titanium-containing component and 12-55 wt % of silicon-containing component is prepared. Powders with particle size of less than 5 mm are used. After that, an exothermic reaction of combustion in inert atmosphere is initiated in the mixture. |
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Method to produce aluminium-copper alloys Aluminium alloy is prepared, reheated over alloy liquidus curve temperature. Copper is added into the aluminium melt in the form of a wire, at the same time electric current is sent between the wire and the melt. Wire melting is carried out without formation of an arc at the ratio of current density to speed of wire feed equal to 0.3-1.0·1010 A·s/m. |
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Alloy of out-of-furnace production of steel and iron and blend to this end Proposed composition contains the following substances, in wt %: titanium - 30- 50, zirconium - 1-25, silicon - 15-30, aluminium - 0.1-3, iron making the rest. For production of proposed alloy the blend is used that contains ilmenite concentrate, rutile, coal, quartz sand, quartzite, and zirconium concentrate. |
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Alloy for alloying of steel with titanium Alloy contains the following components, wt %: titanium 45-75, silicon 5-45, aluminium 5-15, carbon not more than 0.2, iron - balance, at the same time the mass ratio of titanium to aluminium is within the limits from 3:1 to 15:1. |
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Method for production of aluminium-zirconium ligature (versions) For production of aluminium-zirconium ligature, aluminothermal recovery of zirconium is carried out from its compounds in the environment of melted metal halogenides. Zirconium is recovered from its fluoride or oxide, and also from fluozirconate or oxifluozirconate of alkaline or alkaline-earth metal in presence of potassium chloride, sodium fluoride and aluminium fluoride, introduced into the melt or formed in the process of aluminothermy. The temperature of the process amounts to 850-1150°C. Recovery is carried out under the layer of chloride cover flux, containing potassium and sodium chlorides at the following ratio of components, in the mixture, wt %: potassium chloride 42-45, sodium chloride - balance. The melt is soaked for 15-30 minutes, and bars are poured. The invention makes it possible to produce bars of ligature with homogeneous structure with dimensions of intermetallides of up to 15-30 mcm, at the same time non-return losses of zirconium are reduced down to 7-9%, environmental characteristics of the process are improved. |
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Alloy combination for production of castings from high-strength cast-iron (versions) As per Version 1, alloy combination contains the following, wt %: silicon 22.0-30.0, magnesium 9.0-12.0, cerium 0.4-0.6, copper is the rest; as per Version 2, alloy combination contains the following, wt %: silicon 22.0-30.0; magnesium 9.0-12.0, misch metal 0.8-1.2, and copper is the rest. |
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Bearing titanium-chrome ferroalloy is crushed to powder with particle size of less than 0.2 mm. Titanium-chrome ferroalloy contains the following, wt %: chrome - 5.0-35.0, titanium - 15.0-30.0, aluminium - 5.0-10.0, silicon - 5.0-8.0, and iron is the rest. Total amount of Ti, Cr, Si, Al is 30.0-82.0 wt %. Powder is loaded to the container that is moved to a SHS reactor; an exothermic burning reaction is initiated in a layer-by-layer mode at nitrogen pressure of 1.0-15.0 MPa. |
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Method for obtaining aluminium-titanium alloy combination (versions) Invention refers to non-ferrous metallurgy and can be used for obtaining alloys based on aluminium. In order to obtain aluminium-titanium alloy combination, alumino-thermal reduction of titanium from its compounds is performed in the environment of molten halogenides of metals. Titanium is reduced from its fluoride or oxide, as well as from fluorotitanate or oxyfluorotitanate of alkali or alkali-earth metal in presence of potassium chloride, sodium fluoride and aluminium fluoride, which are introduced to molten metal or formed during aluminothermic process. The temperature of the process is 850-1150°C. Reduction is performed under the layer of covering flux chloride, which contains potassium and sodium chlorides at the following ratio of components in the mixture, wt %: potassium chloride 42-45, sodium chloride is the rest. Molten metal is exposed during 15-30 minutes and poured into billets. The invention allows obtaining billets of the alloy combination with homogeneous structure with intermetallides with the size of up to 15-30 mcm, reducing non-collectable titanium scrap to 7-9% and improving environmental characteristics of the process. |
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Foundry alloy for casting heat-resistant titanium alloy and method of its making Invention relates to metallurgy of nonferrous metals, particularly, to production of foundry alloy for alloying refractory titanium-base alloys. Proposed composition contains the following substances, in wt %: tungsten 48.0-52.0, titanium 10.0-20.0, hafnium 0.08-0.1, aluminium making the rest. Charge is smelted in vacuum arc furnace with nonconsumable tungsten electrode. Note here that at first step, titanium placed on bottom of copper water-cooled casting mould and tungsten of higher density is placed there above. Titanium and tungsten are dissolved and melted in proportion corresponding to their content in foundry alloy to make integral ingot at arc current between charge and electrode of 750-1100 A and melting time of 3-10 min. To average ingot chemical composition, ingot is removed from casing mould to subject it to remelting at temperature higher than liquidus temperature of the alloy of titanium and tungsten. Then, required amount of aluminium and hafnium is added to remelted ingot to be placed under aforesaid ingot to proceed with melting at 1750-1900°C. |
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New generation nanomodifier (ngnm) Complex modifier contains the following components, wt %: fullerenes 0.1-27, nanosized composite particles of metal carbides selected from the following group: cobalt, iron, nickel 1-43, nanosized composite particles of cobalt 0.2-20, nanosized particles of lanthanum 0.1-29, nanosized composite particles of tungsten 0.5-42, nanosized composite particles of cerium 0.7-33, nanosized composite particles of iron 1-41, nanosized composite particles of nickel 0.6-36, nitrides or silicides or borides or oxides or carbonitrides of metals - balance. |
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Method of producing aluminium alloys with transition metals Invention relates to nonferrous metallurgy and may be used in production of foundry alloys based on aluminium with transition metals. It comprises making aluminium melt overheated to above alloy liquidus temperature and adding alloying components into melt by fusing the wire. Note here that electric current flows between wire and aluminium melt. Layer of fused flux is produced on aluminium melt surface while said wire is fused by heat released in flux layer at electric current existing therein. Note also that said flux contains cryolite - 40-45 wt %, aluminium oxide - 10-20 wt %, and magnesium fluoride - 35-40 wt %. |
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Method for obtaining aluminium-titanium-boron alloy combination Method involves melting of primary aluminium, batch introduction to molten aluminium of titanium-containing and boron-containing components, mixing of molten metal and its pouring, cooling and heat treatment. As titanium-containing component there used is potassium hexafluorotitanate K2TiF6 in quantity of 10÷35 wt %, and as boron-containing component there used is crystalline boric acid H3BO3 in quantity of 4÷10 wt %. Titanium-containing and boron-containing components are pre-mixed and packed into cover from technical aluminium with weight of 0.2÷0.6 kg; packed components are added in portions to molten aluminium with temperature of 950÷1050°C; after that, molten metal is mixed and exposed during 0.2÷0.5 hours, and pouring of alloy combination is performed at molten metal temperature of 800÷850°C to water-cooled moulds with ratio of dimensions of length of casting to height and width of 15÷25:1÷1.5:1.5÷2 and weight of casting of 1.5÷2.5 kg; at that, cooling of molten metal in moulds is performed at the rate of 200÷250°C/min. |
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Aluminium alloy combination obtaining method Aluminium molten metal is prepared and heated over temperature of 950-1000°C. Liquid flux layer of the following composition, wt %, is induced on aluminium molten metal: cryolite 80-85 and aluminium oxide 15-20. Liquid flux is heated over solution temperature of alloying component with electroslag process and alloying component is added in the required quantity. |
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Method to obtain nitrogen-containing ligature To obtain the ligature the source alloy containing 40-85% vanadium, 2-57% of iron and one or more elements selected from a number of calcium, aluminium, silicon, carbon and manganese in an amount of 1.0-21.0%, the powder is milled with a particle size of less than 1.5 mm, the powder is placed in an atmosphere of nitrogen with a purity not less than 99.0% at pressures above 0.1 MPa, an exothermic reaction of creation of vanadium nitride is initiated by local heating of the part of surface layer of the powder; the powder is saturated with nitrogen in so-called self-propagating high-temperature mode of synthesis (SHS) to obtain a composite alloy based on vanadium nitride with the density of 4.0-7.0 g/cm3, which consists of vanadium nitride in an amount of 44-92% and a binder alloy, which is an iron-based alloy comprising at least two elements selected from a number of calcium, aluminium, silicon, carbon, manganese and vanadium in an amount 1.0-20.0% and having a start of melting temperature less than 1500°C. |
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Modifying mixture for cast-iron Mixture contains the following components, wt %: magnesium 12-17, graphite 15-20, boric anhydride 12-15, calcium hydride 7-11, boron nitride 10-20, ferrophosphorus 8-12, and ferrosilicium is the rest. |
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Method involves addition to the molten metal of the modifying agent containing ultrafine high-melting particles of titanium carbonitride and titanium, chrome, molybdenum, tungsten, niobium, aluminium, nickel and manganese particles. Modifying agent is added to the molten metal heated to 1480-1600°C in the form of a briquette with density of 1.05-1.2 of molten metal density and porosity of 1.0-5.0 vol %. |
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Method to produce ligature material for complex modification of light alloys ingot structure Preparation of an alloy of aluminium with transition metals and the process of granulation of these alloys from the superheated melt is carried out. Granulating is carried out during melt crystallisation with a cooling rate of 5×101-5×102 degrees per second, and grain size in diameter shall be at least 5 mm, and the total content of transition metals in the granules is maintained at the level not higher than 5.0%. |
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Alloy contains the following components, wt %: silicon 20.0-30.0, manganese 35.0-40.0, boron 1.0-1.5, tungsten 10.0-15.0, copper 10.0-15.0, iron - balance. |
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Additives reducing steel grain size, manufacturing methods and use Invention refers to metallurgy and can be used during modification of steel melting with additives in the form of composite material containing high volume ratio of specially manufactured particles. Material includes composition of particles (XaSb) or (XaOb) and element X, where X - one or several elements chosen from group of Ce, La, Pr, Nd, Y, Ti, Al, Zr, Ca, Ba, Sr, Mg, Si, Mn, Cr, V, B, Nb, Mo and Fe, and S - sulphur, O - oxygen, where the above material also includes oxygen, sulphur, carbon and nitrogen; at that, "a" and "b" - arbitrary positive numbers which are determined with total content of elements S, O, C, N and X, where content of sulphur or oxygen is between 2 and 30% of the weight of the above material, while total content of oxygen or sulphur, carbon and nitrogen and the other specified elements chosen from group X is between 98 and 70% of the weight of the above material, and the above material includes high volume ratio of particles (XaSb) or (XaOb) built in metal matrix X. |
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Aluminium-titanium alloy combination obtaining method Molten aluminium is prepared and heated above liquidus temperature. Perforated fire-resistant melting pot with titanium sponge is introduced to melting pot with molten aluminium, which is covered with flux. Size of holes of perforated melting pot is smaller than size of titanium sponge. Perforated melting pot is located so that its edge is located above mirror of metal in melting pot. After that, titanium sponge is molten using concentrated heating source - electric arc or compressed electric arc or laser. |
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Method of producing modifying agent for nickel alloys Ultradispersed powder of titanium carbonitride and powders of titanium, aluminium, tungsten and niobium are added to mix containing powders of molybdenum, chromium and nickel. Said powder of titanium carbonitride is premixed for 1.5-2 h and mixed with titanium powder for 10-20 min. Aluminium powder is added thereto and mixed for 10-20 min. Thereafter, powders of tungsten, niobium, molybdenum, chromium and nickel are added and mixed for 5-10 min. Mix is degassed in vacuum furnace at 2·10-3-2·10-4 mm Hg and 250-400°C for 1-5 min and mixed for 1.5-2.5 h. Resultant mix is compacted at 20-100 Mpa and sintered in vacuum for 30 min. |
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Steel modifying agent contains nano-dispersed powders of refractory metals and nanopowder of protector. Protector represents powders of one or several rich alloys from the group including ferrosilicon, ferromanganese, ferrosilicon aluminium, silicocalcium, silicobarium, silicocalcium barium, at the following ratio of components in wt%: nano-dispersed powders of refractory metals - 1-50, powders of one or several rich alloys -making the rest. |
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Modifying agent for nickel alloys Proposed composition contains the following substances, in wt %: titanium carbonitride - 2.5, titanium - 19-21, chromium - 1.4 - 1.6, molybdenum - 9-11, tungsten - 9-11, niobium - 9-11, aluminium - 32-38, nickel - 9-11, manganese - 0.9-1.1. Particle size of fine titanium carbonitride powder makes 0.01-0.05 mcm, that of titanium makes 0.01-0.1 mcm, while that of chromium, molybdenum, tungsten, niobium and aluminium makes 4-50 mcm, and particle size of nickel and manganese does not exceed 20-30 mcm. |
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Modifying agent for obtaining cast iron with spherical graphite Modifying agent contains the following, wt %: magnesium 7.0-9.0; cerium 8.0-10.0; iron ≤ 1.5; nickel is the rest. |
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Modifying agent for steel and alloys As inoculator the modifying agent includes nano-powder of heat-resistant compounds of the group containing carbide, nitride, oxide, carbonitride, oxicarbonitride, and as protector it contains the powder of modified steel or alloy, or powder of steel or alloy, which is close as per chemical composition. Components are contained in the following ratio, wt %: nano-powder of heat-resistant compound 5-30, powder of modified steel or alloy, or alloy close as per chemical composition is the rest. |
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Addition alloy for alloys modification and alloying Addition alloy contains, wt %: tin 50-55; silicon 18.0-22.0; iron - the rest. Also, it is used in crushed form with dimension of particles 3.2-20 mm. |
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Alloy for steel de-oxidation, refining, modifying and micro-alloying (versions) According to first version alloy contains wt %: silicon 30-65, aluminium 0.1-10, calcium 10-20, barium 7-20, iron 1-15, strontium 7-20, copper 0.1-10. According to the second version alloy contains wt %: aluminium 30-65, silicon 0.1-10. Contents of the rest of components correspond to the first version. Summary contents of calcium+barium+strontium in both versions of composition is over 25%. |
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Modifier consists of disperse particles of carbide of boron, titanium di-boride and chromium at following ratio of wt %: boron carbide 50-70, titanium di-boride 20-40, chromium - the rest. Synthetic particles of refractory compounds of dimensions not over 1-3 mcm are used in composition of modifier. |
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Alloy for steel micro-alloying Alloy has two-component composite structure consisting of vanadium nitride and iron-silicon alloy. Also, weight ratio of vanadium to nitrogen in vanadium nitride is within ranges from 3.7:1 to 6.0:1, while weight ratio of iron to silicon in iron-silicon alloy is within ranges from 120:1 to 3:1. Alloy has density from 4.2 to 6.9 g/cm3, general porosity from 1.0-28.0%, compression strength from 2 to 192 MPa at the following ratio of components in it, wt %: vanadium nitride 40-90, iron silicon alloy - the rest. |
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Procedure for control of addition alloy for titanium alloys There are made samples by melting experimental ingot of charge containing addition alloy for titanium alloy and additional component in form of spongy titanium which forms homogenous alloy with addition alloy. Also, amount of controlled addition alloy in alloy comes to from 10 to 50 wt %. There is fabricated a sample out of an experimental ingot and there is performed X-ray control for presence of inclusions in composition of addition alloy containing refractory metals. By results of X-ray control there is carried out micro-X-ray-spectral assay of composition of revealed inclusions. |
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Method of producing hydrogen sulphide Invention relates to a method of producing hydrogen sulphide from sulphur and hydrogen in a reactor. Sulphur and hydrogen react in a reactor at temperature between 400 and 550°C and pressure from over 9 to 20 bars. A reactor is used, and if needed and preferably - pipes, as well as reinforcement and elements and components of control-measurement and regulating apparatus in contact with aggressive medium, which are partly or completely made from material which is resistant to the corrosive action of the reaction medium, where the said material contains aluminium, or material which is coated with aluminium oxide or oxide on its surface which is in contact with the reaction mixture. The material contains aluminium in amount of 1-10 wt % and Cu, Co and/or Y in amount of 0-5 wt %. Synthesis is carried out in the presence of heterogeneous catalyst. |
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According to procedure there is used source charge containing sodium fluoride, potassium chloride, scandium oxide or fluoride, aluminium fluoride, hydro-fluoride of potassium and oxy-fluoride of zirconium and/or hafnium. Charge is mixed with metal aluminium to maintain weight ratio of components of charge to aluminium, as 1:0.8-1.1. Produced mixture is loaded into a crucible and is heated to temperature 800-900°C. Further, there is carried out alumino-thermal reduction at melt mixing. Melt is conditioned during 15-30 min and salt melt and liquid metal are poured separately into moulds. Source charge contains components at the following ratio, wt %: oxide or fluoride of scandium 4.3÷12.0, aluminium fluoride 5.0÷8.0, sodium fluoride 14.5÷18, potassium hydro-fluoride 1÷3, zirconium and/or hafnium oxy-fluoride 8÷15.4, potassium chloride - the rest. |
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Addition alloy for heat resistant nickel alloys Addition alloy contains powder of tungsten impregnated with melt of alloy of magnesium and aluminium. Also, amount of tungsten in addition alloy is 80-95 wt %, while amount of magnesium in alloy is 35-70 wt %. |
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Procedure for production of ferro-silico-titanium As titanium containing material there is used ilmenite concentrate and/or rutile, while as silicon containing material there is used high-silica sand mixed with ilmenite concentrate, rutile and carbonic reducer in form of gas coal. Produced mixture is briquetted and melted in an ore-smelting furnace by one-stage slag-free carbon-thermal procedure. |
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Alloy for alloy addition of steel Alloy corresponds to two-component composition consisting of vanadium nitride and iron-manganese alloy. Also, in vanadium nitride weight ratio of vanadium to nitrogen is within ranges from 3.8:1 to 5.8:1, while in iron-manganese alloy weight ratio of iron to manganese is within ranges from 150:1 to 2:1. Composition alloy has density from 5.6 to 7.0 g/cm3, general porosity from 0.5-13 %, compression strength from 8 to 208 MPa at the following ratio of components, wt %: vanadium nitride 44-61, iron manganese alloy 39-56. |
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Procedure for production of aluminium alloys Procedure consists in preparing over-heated aluminium melt, in supply of alloying components and in their dissolving in melt. Alloying components are supplied in form of wire. Electric arc is ignited between wire corresponding to a positive electrode and aluminium melt corresponding to a negative electrode in a medium of inert gas for intensification of fusion of wire and introduction of alloying components into melt in a liquid phase. |
Another patent 2545822.