Method to produce aluminium-copper alloys |
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IPC classes for russian patent Method to produce aluminium-copper alloys (RU 2486271):
 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 of producing aluminium alloys with transition metals / 2467086
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 %.
 Method for obtaining aluminium-titanium-boron alloy combination / 2466202
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.
Product from al-cu-li-alloy suitable for use in aircraft and aerospace engineering / 2481412
Proposed article comprises the following components in wt % Cu - 3.4-5.0, Li - 0.9-1.7, Mg - 0.2-0.8, Ag - 0.1-0.8, Mn - 0.1-0.9, Zn - 0.1-1.5 and one or several elements selected from the group consisting of (Zr - 0.05-0.3, Cr - 0.05-0.3, Ti - 0.03-0.3, Sc - 0.05-0.4, Hf - 0.05-0.4), Fe<0.15, Si<0.5, common and unavoidable impurities and the rest composed of aluminium. It relates also to method of making articles from this alloy.
High-strength aluminium alloy and method for its obtaining / 2451097
Aluminium-based alloy contains the following, wt %: zinc - 6.35 - 8.0, magnesium - 0.5 - 2.5, copper - 0.8 -1.3, iron - 0.02 - 0.25, silicon - 0.01 - 0.20, zirconium - 0.07 - 0.20, manganese - 0.001 - 0.1, chrome - 0.001 - 0.05, titanium - 0.01 - 0.10, boron - 0.0002 -0.008, beryllium - 0.0001 - 0.05, at least one element from potassium, sodium, calcium group in quantity of 0.0001 - 0.01 each, aluminium is the rest; at total content of zinc, magnesium, copper within 8.5-11.0, and that of zirconium, manganese and chrome - within 0.1-0.35. Method involves loading and melting of charge components, flux treatment of molten metal, molten metal purification, further vacuum treatment of molten metal in mixer and casting of ingots; boron is added to molten metal in the form of Al-Ti-Be alloy which is distributed at least one hour before molten metal pouring to mixer along the whole surface area of mixer bottom; at that, mixer is pre-heated to temperature which is by 15-30°C more than molten metal temperature, and vacuum treatment of molten metal in mixer is performed at temperature of 695-720°C, during 45-90 minutes.
 Aluminium-based cast alloy / 2447174
Aluminium-based cast alloy has the following chemical composition, in wt %: Cu 3.5-6.0, Mg 0.2-0.9, Ti 0.1-0.4, Zr 0.1-0.5, Mn 0.2-1.2, Zn 0.5-2.5, Sc 0.15-0.5, Al making the rest.
Aluminium-based alloy / 2447173
Proposed alloy contains the following components, in wt %: copper 3.50-4.50, magnesium 1.20-1.60, manganese 0.30-0.60, zirconium 0.01-0.15, silver 0.01-0.50, iron 0.01-0.12, silicon 0.01-0.08, titanium 0.01-0.06, scandium 0.01-0.20, calcium 0.001-0.05, at least, one element from the GROUP including nickel 0.005-0.05, hafnium 0.01-0.10. Note here that total amount of Fe+Si≤0,15 at Fe/Si≥1.2, aluminium making the rest.
Aluminum based antifriction alloy / 2441932
invention refers to the area of metallurgy of metallic materials with high antifriction and strength properties, used for production of slide bearings. The alloy contains components with the following ratio, % w/w: lead 7.4-9.1, tin 0.9-2.1, copper 0.4-1.6, silicone 3.4-4.6, aluminum - the rest. EFFECT: expansion of technological possibilities due to using alloy for production of sputtering targets for application of thin antifriction layer on the slide bearings, and production of alloy with homogenous highly dispersed structure and high antifriction properties.
 Cast alloy on base of aluminium and procedure for forming protective coating on its surface / 2421536
Cast alloy on base of aluminium with reduced tendency to inter-crystallite corrosion contains wt % copper 4.0-6.2, cerium 0.08-0.10, associated impurities not more, than 0.02, aluminium - the rest. The procedure for protection surfaces of items out of cast alloy on base of aluminium with reduced tendency to inter-crystallite corrosion by means of application of coating by micro-plasma oxidation consists in oxidation of an item, corresponding to working electrode, and in alkali water solution of electrolyte containing 0.1-0.6 g/l of chemical compounds forming polymer-ions in alkali water solution. Also, oxidation is carried out at alternate symmetrical voltage spontaneously changed into asymmetrical; while duration of oxidation is equal to time when amount of intense glowing micro-discharges on surface of the item in anode half-period of alternate current flow is from 4 to 20 of micro-discharges.
 Sheet out of high viscous aluminium-copper-lithium alloy for fuselage of aircraft / 2418088
Alloy on base of aluminium contains from 2.1 to 2.8 wt % of Cu, from 1.1 to 1.7 wt % of Li, from 0.1 to 0.8 wt % of Ag, from 0.2 to 0.6 wt % of Mg, from 0.2 to 0.6 wt % of Mn; amount of Fe and Si of each is less or equal to 0.1 wt % and unavoidable impurities in contents less or equal to 0.05 wt % each and 0.15 wt % in total. Contents of zirconium is less, than 0.04 wt %. The procedure for fabrication of the above said aluminium alloy consists in casting a plate, in homogenisation of the said plate at temperature from 480 to 520°C during from 5 to 60 hours, in hot, and, and, if necessary, cold rolling the said plate into a sheet at initial temperature of rolling from 450 to 490°C. Further, the said sheet is placed into solution at temperature from 480 to 520°C during from 15 minutes to 4 hours, and quenched, and drawn under control with residual deformation from 1 to 5%. The sheet is tempered by heating at temperature from 140 to 170°C during from 5 to 80 hours.
 Method of production of powder of quasi-crystalline single phase alloy al-cu-fe / 2370567
Method consists in mixing source mixture of powders of aluminium, copper and iron in air at ratio of components corresponding to domain of existence of quasi-crystalline phase of Al-Cu-Fe system alloy and in heating it in oxygen-free atmosphere. Dry components of mixture are mixed. Heating is carried out to temperature of beginning of self-propagating high-temperature synthesis. Further obtained product is crumbled to powder of required size. Also mixture is heated to temperature 530-540°C in vacuum chamber in atmosphere of inert gas or in forevacuum in pressure range 1-5·10-2 Top.
 Method of production of coating from quasi-crystalline alloy of al-cu-fe system / 2335574
Method includes layer-specific spraying of melted particles on part surface, at that heating of particles is carried out in plasma jet screened with supply of pyrophoric technological gas into spraying spot. Coating is sprayed from powder, initial mixture of which is taken with proportion of aluminium, copper and iron that corresponds to area of Al-Cu-Fe alloy quasi-crystalline phase existence, by heating it up to melt temperature in inertial atmosphere. At that part surface is cooled with coolant, and temperature in spot of spraying is maintanined in interval of 650-750°C.
Alloy on aluminium basis / 2333997
Invention concerns non-ferrous metallurgy. Particularly it concerns alloys on aluminium basis content, which can be used in mechanical engineering. Alloy contains following components, mass %: copper 4.0-5.0, magnesium 0.1-0.2, silicon 0.5-1.0, titanium 0.1-0.2, iron 0.05-0.1, boron 0.05-0.1, nickel 1.0-1.5, zirconium 0.1 -0.2, aluminium - the rest.
 Method for production of quasi-crystal single-phase aluminum-copper-iron-based powdery alloy / 2244761
Claimed alloy is obtained from aluminum, copper and iron powder mixture at ratio corresponding of its quasi-crystal phase field. Raw mixture is blended in air in presence of liquid volatilizable plasticizer to obtain homogeneous mixture and increase viscosity thereof with subsequent heating in oxygen-free atmosphere and holding.
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FIELD: metallurgy. SUBSTANCE: 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. EFFECT: invention makes it possible to reduce losses of alloying components and to reduce energy intensity of production of aluminium-copper alloys.
The invention relates to ferrous metallurgy and can be used to obtain aluminum-copper alloys. A method of obtaining aluminum alloys (Foundry of non-ferrous and rare metals. Kurdyumov AV, Pikunov M.V., Chursin V.M. Of "metallurgy", 1972, s.), when purchasing superheated aluminum melt and enter the alloying components. The disadvantage of this method is the length of the process of dissolution of the alloying components, which reduces the efficiency of the process, and also contributes to the saturation of the aluminum melt gases and oxide inclusions. It is also known a method of obtaining aluminum alloys, in which the superheated aluminum melt is injected alloying components in the form of wire between the wire, which is the positive electrode, and the aluminum melt, which is the negative electrode, burning electric arc in an inert gas environment. This method improves the performance and reduces the complexity of the preparation of aluminum alloys, however, due to splashing and burning large losses of alloying elements in the preparation of aluminum alloys. In addition, a considerable part of energy is lost due to radiation of the arc column. The technical result of the proposed method is to reduce their loss of alloying components and reducing the energy intensity of the production of aluminium-copper alloys. The essence of the proposed method is that the produced superheated aluminum melt is above the liquidus temperature of the alloy and enter the copper in the wire between the wire and the aluminum melt electric current is passed. Unlike the prototype, the melting of the wire is carried out without forming an arc with respect to current density of the wire feed speed is equal to 0.3 to 1.0·1010And·/m3. This set of new features with the known leads in comparison with the prototype to reduce the loss of alloying components and to reduce the energy intensity of production of aluminium-copper alloys. How is that prepared aluminum melt, overheat it above the liquidus temperature of the alloys. Copper is introduced into the aluminum melt in the form of wire between the wire and the melt electric current is passed. The process is carried out at a ratio of current density to the wire feed speed from 0.3 to 1.0·1010And·/m3that ensures the melting of the wire without the formation of an arc. Safety melting copper wire reduces the splashing of copper and reduces energy loss in the absence of radiation of the arc column. An example of the application of the proposed method is the manufacturer of aluminum-copper alloys with a content of 33% of the honey is. Aluminum melt overheat to a temperature of 850°C. Copper wire marks M1 with a diameter of 1.6 mm, which is the one of the electrodes, served in the crucible with the aluminum melt, which is the second electrode, using feeder welding torch for mechanized welding at a speed of 5 m/min at a current of 600 A. In these modes, the ratio of current density to the wire feed speed from 0.3 to 1.0·1010And·/m3that ensures the melting of the wire without the formation of an arc. This reduces the loss of alloying components and reduces the energy intensity of production of aluminium-copper alloys. The proposed method provides a technical effect and can be carried out using means known in the art. Therefore, it has industrial applicability. The method of obtaining an aluminum-copper alloys, comprising preparing an aluminum melt superheated above the liquidus temperature of the alloys, introduction to melt copper wire and melting, while between the wire and the aluminum melt is passed an electric current, characterized in that the implement safety of the melting of the wire with respect to current density of the wire feed speed is equal to 0.3 to 1.0·1010And·/m3.
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