Modifying alloying bar al-sc-zr |
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IPC classes for russian patent Modifying alloying bar al-sc-zr (RU 2497971):
 Method for obtaining titanium-containing alloy for steel alloying / 2497970
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.
Method to produce aluminium-copper alloys / 2486271
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.
 Alloy of out-of-furnace production of steel and iron and blend to this end / 2483134
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.
Alloy for alloying of steel with titanium / 2482210
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.
Method for production of aluminium-zirconium ligature (versions) / 2482209
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.
Alloy combination for production of castings from high-strength cast-iron (versions) / 2480530
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.
Method for obtaining nitrogen-containing alloy for alloying of steel and cast iron, and nitrogen-containing alloy for steel and cast iron alloying / 2479659
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.
 Method for obtaining aluminium-titanium alloy combination (versions) / 2477759
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.
Foundry alloy for casting heat-resistant titanium alloy and method of its making / 2470084
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.
 New generation nanomodifier (ngnm) / 2468110
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.
 Method for obtaining high-strength cast-iron with vermicular graphite by intra-mould modification using alloy combinations of fe-si-rem system / 2497954
Method involves loading to a reaction chamber of a pouring gate system of modifying agent charge in the form of Fe-Si-REM alloy combination providing initial concentration of rare-earth metals in molten cast-iron of 0.075%; then, after the casting mould is assembled, a lump of FS75 with the weight of 0.24-0.46% of metal consumption of the mould is laid in its pouring basin for graphitising pre-modification, and it is filled with molten cast-iron from the furnace.
 Additives reducing steel grain size, manufacturing methods and use / 2449027
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.
 Method of producing thick-wall castings from cast iron with spherical graphite / 2440214
Invention relates to metal forming, namely, to producing housings of containers intended for storage and transportation of waste nuclear fuel and other radioactive wastes. Proposed method comprises iron smelting in two furnaces, spheroidising liquid iron in teeming ladle. Iron is filled in charging ladle. Mould consists of outer lateral iron mould, top and bottom half-moulds and central cooled core. Iron is modified in charging ladle by the mix of microcrystalline rich alloys making 0.21-0.6%. Modifying mix consists of alloys Si-Mg, Si-Ba and Si-REM taken in the following ratio: 1:1:(0.5…1.0). Iron is charged into mould cavity is carried out through all feeders at a time after homogenising for 1…5 minutes.
Producing ingots from aluminium alloys by semi-continuous casting / 2430807
Invention relates to metallurgy. Proposed method comprises adding rod-like aluminium oxide particles to crystalliser melt. Said rod is produced in placing aluminium alloy granules into container for them to be heated and formed with crushing granule oxide film to dispersed particles on fitting rod in die hole.
 Method and device for obtaining liquid-solid metal composition / 2404274
Method involves loading of molten alloy (3) to vessel (2), mixing of molten alloy (3) at cooling; at that, mixing is performed by using mechanical mixer (5), and loading of hard alloy (6) to vessel (2). Hard alloy is attached to mixer (5) and loaded to vessel (2) by means of mixer (5). Amount of hard alloy (6) is chosen so that in molten alloy (3) owing to enthalpy exchange between hard alloy (6) and molten alloy (3) there formed are solid particles (7) in amount of at least 1 wt %, but not more than 65 wt %. At least some part of added hard alloy (6) is molten owing to heat transferred to it with molten alloy (3). Device includes vessel (2) with molten alloy (3) and at least one mechanical mixer (5); at that, the above hard alloy (6) is attached to the above mixer (5) and loaded to vessel (2) by means of mixer (5).
Method of manufacturing foundry from grey cast iron / 2384630
There is implemented melting of cast iron, its pouring into non-metallic forms, crystallisation of ingots and heating of ingot located in non-metallic mould in induction-arc furnace up to 1147-1300°C with isolation 0.2-0.5 hours.
 Method of fabricating castings of working wheels of immersed multi-stage centrifugal pumps for oil production (versions) / 2370339
Invention refers to foundry engineering. The method consists in implementation of a casting mould with a gate channel part of which is made in form of a spiral. Behind the spiral section the gate channel is divided in plane of perpendicular axis of spiral into two channels for supplying melt to peripheral and central zones of a working cavity of the casting mould correspondingly. To perform inter-mould modified treatment of melt there is used a mixture containing a component, density of which exceeds density of melt or with bigger dimensions of particles, designed for modification of part of melt filling the peripheral zone of the working cavity and containing a component, density of which is less, than density of melt or having smaller dimensions of particle; it is and designed for modification of part of melt filling the central zone of the working cavity.
 Processing method of liquid copper by nanosecond electromagnetic pulse (nsep) for increasing of its heat- and corrosion resistance / 2355511
Invention relates to foundry field. Method includes heating of melt up to the temperature 1300°C, isolation at this temperature during 5 minutes and melt treatment by nanosecond electromagnetic pulses during 10 minutes.
 Method of grey cast iron treatment by nano-second electro-magnetic pulses (nemp) for improving heat conductivity, corrosion stability and heat resistance / 2354496
Invention relates to foundry production. The method provides for heating and electromagnetic treatment of melt by nano-second electro magnetic pulses. The melt is heated to 1500°C and cured under the above temperature during 5 minutes. The melt is subject to electromagnetic treatment at 1350°C during 10 minutes.
 Method of treatment of liquid aluminium and silumin with nano-second electro-magnetic impulses (nemi) to upgrade their thermo-conductivity / 2347643
Melt is heated to the temperature of 900°C. When temperature is stabilised the melt is treated with nano-second electromagnetic impulses during 10-15 minutes, then it is cooled to ambient temperature.
 Sheet material from magnesium alloy / 2482206
Sheet material from magnesium alloy represents a sheet material, which includes magnesium alloy. The magnesium alloy generates a matrix, comprising solid particles and in direction of sheet material thickness a section from each surface of sheet material to a place that is distant from the surface by 40% of sheet material thickness, represents a surface section, and the remaining part - a central section. The maximum diameter of solid particles available in the central section makes from more than 20 mcm to the less than 50 mcm, and the maximum diameter of solid particles available on the surface section - 20 mcm or less. A moulded item from magnesium alloy is moulded by means of plastic working of a sheet material from magnesium alloy.
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FIELD: metallurgy. SUBSTANCE: 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. EFFECT: alloying bar Al-Sc-Zr provides ingots obtained from aluminium alloys with maximum crushed grain structure, which allows maximum possible reduction of tendency to hot cracks during ingot casting process from aluminium alloys and to cold cracks after casting is completed; with that, technological ductility of ingots increases at their pressure treatment and a complex of service properties of semi-finished products, for example channels, forgings, sheets, formings, plates obtained from ingots with non-dendrite structure, is enhanced. 1 ex, 6 tbl
The present invention relates to metallurgy, and in particular, to chemical composition and technology of obtaining Dore bars for modifying the grain structure of ingots of aluminum alloys. The modification of the grain structure of ingots reduces their propensity for hot and cold cracks that occur during and after casting, promote technological plasticity of ingots when handling their pressure (forging, extrusion, rolling and improve the service properties of the deformed semi-finished products obtained from the above-mentioned bars. One of the most well-known and long used the modifier alloys are alloys Al-Ti titanium content of 2-5% (hereinafter % by weight) and the ligature Al-boron 2-5% (Napalkov VI, Mach SV Alloying and modification of aluminum and magnesium. M: Misa, 2002 - s-245). The use of ligatures Al-Ti and Al-In allows you to grind grain structure of ingots of aluminum alloys and to increase their resistance to hot and cold cracking, and increase technological plasticity in the processing pressure. However, the effectiveness of alloys Al-Ti and Al Is not tall, and strong grinding the beans in cast ingots does not occur. Known more effective modifier ligatures Al-Ti-B and Al-Ti-C, produced in the form of Dore bars (Makarov is.Sslide of aluminum alloys with magnesium and silicon for pressing. M: Internationalising, 2011 - str-314; Napalkov VI, Mach SV Alloying and modification of aluminum and magnesium. M: Misa, 2002 - s-251). The prototype. Ligatures Al-Ti-B and Al-Ti-C, used in the form of Dore bars, have a strong modifying effect on the grain structure of ingots of aluminum alloys is significantly superior to the modifying effect of ligatures Al-Ti and Al-Century. however, the use of Dore bars Al-Ti-B and Al-Ti-C does not allow you to obtain ingots of aluminum alloys with extremely crushed grain structure, with the so-called nidentity structure, characterized by the absence of dendritic structure and equality of grain size the size of the dendritic cells of the second order (dendritic parameter). Proposed modifying ligature rod Al-Sc-Zr, producing ingots of aluminum alloys with extremely crushed grain structure (with nidentity structure). When using a ligature wire Al-Sc-Zr in the process of casting ingots formed extremely crushed grain structure, not having a dendritic structure with a grain size equal to dendritic parameter. In addition to the limit of grinding grain patterns are crushed particles of excess phases crystallization of origin, occurring at the grain boundaries. To obtain ligature p the duck Al-Sc-Zr, capable of extremely grind grain structure of ingots up to the formation of nidentity structure, it is necessary that the following conditions exist. 1. The chemical composition of the ligature wire must meet the requirements of mass%.
At least one of items
2. In the manufacture of modifying ligature wire Al-Sc-Zr in the crystallization process of the workpiece, from which they will produce Dore bars, the cooling rate in the temperature range of crystallization must be greater than 50 deg/sec, and the melt before casting should pereg avatisa to temperatures above 850°C. 3. On the final operations in the production of Dore bars from bystrozakristallizovannykh procurement use cold deformation. Proposed modifying ligature rod Al-Sc-Zr is still the only one that is capable of extremely grind grain structure of ingots up to formation of nidentity patterns. Introduction ligature rod in an aluminum melt should be carried out with such speed that the content of scandium and zirconium ingot cast alloy was increased by no more than 0.02% of each component. This amount of scandium and zirconium enough to utterly crush the grain structure of the ingot, that is, to form nidentity structure. Getting ingot continuous casting with nidentity structure and crushed particles of excess phases crystallization of origin provides the following benefits and advantages. 1. Dramatically reduces the propensity for hot cracking during casting of ingots of aluminum alloys. 2. Decreases the tendency of the bars to cold cracks after casting. 3. Increasing technological plasticity of the ingots as they are processed pressure - forging, rolling and pressing. 4. Increased complex service properties of the finished semi-finished products (extrusions, forgings, sheets, forgings, plates), obtained the bars with nidentity structure. Nature's strongest modifying action of Dore bars Al-Sc-Zr is that in an aluminum melt with ligature wire are dispersed particles of intermetallic compounds of Al3(Sc, Zr), the crystal lattice which has an almost full-sized structural compliance of the crystal lattice of aluminum. Therefore particles of Al3(Sc, Zr) have a strong seed for crystallization of grains of the aluminum solution, i.e. particles of Al3(Sc, Zr) are the active centers of crystallization of grains of solid aluminum solution. In addition, particle-germ-Al3(Sc, Zr) have good wettability with aluminum melt, which increases their bare action. Retrieving ligature wire using a high cooling rate during crystallization causes a dispersion of particles of Al3(Sc, Zr) and leads to the emergence of a large number of potential centers of crystallization of aluminum grains in the casting of ingots. Experiments show that the introduction into the melt 0,001-0,01% Sc and Zr with ligature wire Al-Sc-Zr provides the ultimate grinding grain ingot structure, i.e. the formation of nidentity structure. Example. The continuous casting method was obtained ingot with a diameter of 304 mm alloy 1960 following the actual chemical composition(table 1).
The melt was prepared in an electric resistance furnace with a capacity of 1 t half of the melt was cast using a serial ligature wire Al-Ti5-B1, and the second half using the proposed ligature wire Al-Sc-Zr, with the content of 1.2% Sc, and 1.15% Zr. Ligature wire was obtained from an ingot continuous casting of 20 mm in diameter, cast in electromagnetic casting mold with a cooling rate in the temperature range of crystallization of about 200 deg/sec. The superheat temperature of the melt before casting was about 1100°C. the Melt was protected from oxidation with momostenango gas. The ingot was annealed, and with the help of rotary forging and subsequent cold drawing received ligature rod with a good clean surface with a diameter of 9.7 mm Ingots with a diameter of 305 mm, molded with the application of the proposed ligature wire Al-Sc-Zr, had smooth Malashenkova surface practically without Nikitin and not flows. Grain structure of ingots - nidentity, with a grain size of about 70 microns. Ingots cast using known ligature wire Al-Ti5-B1 had a rough surface with small not-waves. The structure of the ingot - Serena-dendritic, with a grain size of about 350 microns and the size of dendritic cells about 70 microns. The ingot with nidentity structure had a higher density due to the lower porosity and significantly smaller (~ 10 times) inclusion of excess phases, occurring in the form of layers at the grain boundaries. The bars immediately after casting homogenized at a temperature of 460°C, 24 h, and then cooled in air. To assess the technological plasticity of bullion held by tensile testing of samples taken from the homogenised ingot at a temperature of 400°C. the test Results are presented in table 2.
Examination of table 2 shows that the ingot modified using the proposed rod and having nidentity structure, has a higher ductility and a lower deformation resistance compared with the ingot, modified known ligature rod and having a normal grain dendritic structure. From ingots by means of mechanical processing were made billet under the extrusion of pipes, and then press force 3.5 thousand tons were extruded tube ⌀146×6 mm Temperature before pressing was about 380°C. In the process of pressing temperature was increased to 70-90°C due to the selection of heat deformation. The flow rate during the extrusion ingots with nidentity structure was about 2.0 m/min, and the use of ingots with the usual serenno-dendritic structure - 0.8 m/min Extruded tubes were hardened in the ode with temperature 470°C, straightened, artificially aged by mode 140°C, 16 hours and subjected to the tests. Table 3 presents the results of tests of heat-treated pipe in tension.
Examination of table 3 shows that the pipe obtained from the ingot, the modified proposed ligature, rod, have higher strength and higher elongation. To assess the technological plasticity of the tube during subsequent cold rolling of hot-pressed tubes were annealed what about the standard mode and 400°C., 1 hour followed by cooling with the oven to 150°C, then air, and tested in tension (table 4).
The analysis of table 4 shows that the ductility of the annealed tubes produced from ingots cast using the proposed ligature, rod, above, and the deformation resistance is slightly lower. Annealed tubes were laminated holodnuju with ⌀146×6 mm ⌀134×3 mm rolling Process confirmed a higher technological plasticity annealed pipes produced from ingots, modified proposed ligature rod. Rolled the tubes together with the workpieces under transverse specimens were hardened in water with a temperature of 470°C and artificially aged by mode 140°C, 16 hours. Mechanical properties after quenching and artificial aging are presented in table 5.
From pipes were manufactured samples for testing the impact strength and the samples on the low cycle fatigue (f=3 Hz, Kt=2,6 C max=160 MPa). The test results presented in table 6.
Pipe obtained from ingots cast using the proposed ligature, rod, have large values of impact strength and have greater resistance to repeated loads. Thus, the proposed ligature rod Al-Sc-Zr provides the ultimate grinding grain structure of ingots and strong particle reduction of excess phases, occurring at the grain boundaries. These changes in the structure of ingots of high-strength alloy 1960 cause a higher rate expires during pressing, higher workability in cold rolling of tubes and the Amoy main, provides an opportunity to increase the mechanical and durability properties of the finished tubes obtained from these ingots. Ligature rod for modification of ingots of aluminum alloys with nidentity structure, characterized in that it has the following chemical composition, wt.%:
At least one of the elements
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