216 results about "High strength aluminium" patented technology

The present invention a high strength aluminium alloy brazing sheet, comprising an Al—Zn core layer and at least one clad layer, the core layer including the following composition (in weight percent):

optionally one or more of:

the balance aluminium and incidental elements and impurities. The clad layer includes an Al—Si based filler alloy and is applied on at least one side of the core layer. The invention relates furthermore to a brazed assembly including such brazing sheet, to the use of such brazing sheet and to method for producing an aluminium alloy brazing sheet.

A bright finish aluminum alloy on high strength aluminum or aluminum alloy lamination is disclosed including a bright finish top sheet, a high strength aluminum or aluminum alloy substrate, and an adhesive bonding the bright finish metal top sheet to the high strength aluminum or aluminum alloy substrate to provide a bright finish aluminum on high strength aluminum or aluminum alloy lamination product having brighter finish than a sheet product of said high strength aluminum or aluminum alloy and higher strength than a sheet product of said bright finish aluminum of the same thickness as said lamination product, wherein said lamination product withstands galvanic corrosion. In one aspect, the bright finish metal top sheet is 5657 aluminum foil. In one aspect, the high strength aluminum alloy is 5182 alloy sheet.

Disclosed is a high strength aluminium alloy brazing sheet, including an Al—Cu core layer and at least one clad layer, the core layer having the following composition (in weight percent): Cu: 1.2-4.0, Mn: 0.06-1.5, Mg: 0.06-1.5, Si: up to 0.5, Zn: <0.4, Zr: ≦0.25, Fe: ≦0.5, Ti: ≦0.25, Cr: ≦0.25; V≦0.25; the balance substantially aluminium and impurities, the clad layer including an Al—Si based filler alloy and being applied on at least one side of the core layer. Also disclosed is a brazed assembly including the brazing sheet and the use of the brazing sheet for a brazing application such as a heat exchanger.

The invention relates to a high-strength aluminium alloy plate and a production method thereof. The high-strength aluminium alloy plate is made from the components in parts by weight: 0.4-0.8 part ofSi, 0.3-0.6 part of Fe, 0.2-0.3 part of Cu, not more than 0.15 part of Mn, 1.0-1.15 parts of Mg, 0.1-0.3 part of Cr, not more than 0.05 part of Zn, 0.02-0.03 part of Ti, not more than 0.01 part of other impurities and the balance of Al, wherein the total amount is 100 parts. The production method comprises following steps: smelting, refining, stewing, casting, face milling, hot rough rolling, hotprecision rolling, cold rolling and online continuous quenching, wherein furnace temperature is 590-610 DEG C, and the quenching speed is 0.7-2.0m/min; and then carrying out secondary cold rolling till a aluminium alloy platen is rolled to be 0.8-10mm; and finally obtaining a finished product through finishing and artificial ageing treatment. The plate has the advantages of high strength, corrosion resistance, good welding performance and the like; the adopted hot rolling method is a continuous quenching process, thereby realizing the rapidity and the continuity of uncoiling quenching and shortening the production cycle, therefore being beneficial to energy saving and consumption reducing and popularization and application.

The present invention discloses one kind of high strength aluminum alloy wire and rod and their preparation process. The high strength aluminum alloy contains Fe 0.15-0.25 wt%, Mg 0.65-0.75 wt%, Si 0.56-0.66 wt%, Cu not more than 0.10 wt%, Zn not more than 0.10 wt%, Mn not more than 0.03 wt%, Cr not more than 0.03 wt%, B not more than 0.06 wt%, Ti 0.006-0.009 wt%, impurity not more than 0.10 wt% and Al for the rest.

The invention relates to a manufacturing method of Al-Mg-Si alloy line. The technological process is: selecting excellent aluminum ingot and putting the aluminum ingot in a vertical furnace to be melted; adding magnesium, silicon and iron; implementing the alloying treatment on aluminum liquid in a tilting holding furnace; using solid covering flux to cover the surface of the aluminum liquid after the refining through refining agent and standing for more than 30m; using a spectrum analyzer to detect main elements and regulating when the content is deviated; slowly dumping the aluminum solution by the tilting holding furnace; adding 0.03 to 0.5 percent of aluminum boron alloys when the dumped aluminum solution is refined through a chute and a continuous scouring device outside of the furnace; continuously casting with an aluminum alloy caster that is composed of an H-type wheeled crystal wheel into the aluminum alloy ingot; putting the aluminum alloy ingot in a two-roller with three-roller novel combined aluminum alloy continuous mill to mill the ingot into a Al-Mg-S alloy bar. The aluminum alloy bar is arranged at a sliding wire drawing machine to be drawn into aluminum alloy product line with required diameter and be stranded into line. The invention has the advantages of both ensuring the high strength and improving the conductivity simultaneously. The conductivity can reach to 53 percent IACS and the strength reaches to 315MPa.

An aluminum alloy brazing sheet having a core material of an aluminum alloy, and a filler material cladded on the core is disclosed. The core material is an aluminum alloy having about 0.05 to about 1.2 mass Si, about 0.05-about 1.0 mass % Fe, about 0.05-about 1.2 mass % Cu, and about 0.6-about 1.8 mass % Mn, balance Al and the inevitable impurities. The filler material includes an aluminum alloy having about 2.5-about 13.0 mass % Si. Also, there is provided a method of manufacturing such an aluminum alloy brazing sheet.

The invention relates to a heat treatment technology of high strength aluminium alloy. The technology performs solution treatment, primary quenching treatment, high temperature short time aging treatment, secondary quenching treatment, intermediate temperate short time aging treatment and low temperature long time aging treatment to high strength aluminium alloy in sequence. The technology improves the comprehensive mechanical property of alloy, increases the corrosion resistance and expands the application range of high strength aluminium alloy.

A method for producing high-intensity heat-resistant aluminum alloy line belongs to production technology field of materials applied to electrical engineering. It winnows component and content of alloy and controls technology to produce high-intensity aluminum alloy line. Select zirconium, copper, iron, silicon and rare earth with different percent of weigh and aluminum ingot into stove. The impurity content of aluminum ingot does not exceed 0.02%(besides silicon, iron, copper). Add alloying additive element and whisk, fine, component fast analyzing before entering stove. Put into continuous caster to produce aluminum alloy pole and draw into aluminum alloy line after tempered heat treatment and cooling to get production. In this method, the capability of production is satisfied the overhead designed demand for Three Gorges to serve the construct of transporting electrical power from west to east.

The invention relates to a heat treatment method for improving the obdurability of a 7-series high strength aluminium alloy, comprising the following steps: firstly carrying out double-stage forced solution treatment on the hot-processing 7***-series high strength aluminium alloy, namely, performing primary solution treatment for 2-4 hours at the temperature of 420-450 DEG C, and performing secondary reinforced solution treatment for 2-4 hours at the temperature of 450-490 DEG C; then quenching and cooling to room temperature, wherein the quenching medium is room temperature water; prestretching within 1-4 hours after quenching, wherein the prestretching distortion is 1-3%; performing high-temperature short-time ageing treatment, wherein the aging temperature is 120-180 DEG C and the aging time is 60-180min; quenching and cooling to room temperature after high-temperature short-time aging treatment, wherein the quenching medium is room temperature water; and finally carrying out low-temperature long-time aging treatment, wherein the aging temperature is 60-120 DEG C, and the aging time is 18-48 hours. The heat treatment method for improving the obdurability of a 7-series high strength aluminium alloy of the invention further improves the fracture toughness property of alloys and broadens the applied range of the aluminium alloys on the basis of maintaining the superhigh alloy strength.

Aluminium-magnesium alloy in the form of a rolled product or an extrusion, having the following composition in weight percent:

The invention discloses a combined welding technology of high-strength aluminium alloy laser-MIG, comprising the following steps: a. setting a combined mode and a welding gun angle; b. setting defocusing amount according to the thickness of a welding plate; c. setting combined welding protective gas as a mixed gas of helium and argon with a volume ratio of helium to argon of 1:4; d. according to welding speed, setting MIG welding air flow quantity; e. according to laser power and MIG current, setting MIG welding voltage value; f. according to the MIG welding voltage value and current value, setting the heat source interval between laser welding and MIG welding; and g. synchronously carrying out laser-MIG compound welding. The technology of the invention can obtain a welding line with clean and smooth welding surface, and the welding line has good shaping and does not have sag. The technology has the characteristics of big welding depth of fusion, high speed, small workpiece deformation, low assembly requirement, strong weld pool bridging ability and the like, is easy to integrate and can effectively control the problems of overlarge welding lines and base metal crystalline grain and the like caused by overheating in the aluminium alloy welding process.

The present invention provides a high-strength aluminium and magnesium alloy isothermal extrusion method based on numerical analog. Said method is characterized by that it utilizes PID control principle and makes it be applied for extrusion deformation finite element analog modeling, and utilizes once analogy of deformation process of workpiece to be machined to accurately and effectively obtain isothermal extrusion speed curve. According to the property of workpiece to be machined the workpiece outlet object outlet temperature, the extrusion speed can be regulated according to the PID control principle so as to obtain analog isothermal extrusion speed change curve correspondent to the described workpiece to be machined, and said isothermal extrusion speed change curve obtained by means of analogy can be inputted into the control system of extruding machine to control speed of main plunger of extruding machine so as to make extrusion outlet temperature retain constant.

The invention discloses a rolling method for an ultrahigh-strength aluminum alloy plate. The rolling method comprises the following steps: A, a refined aluminum alloy ingot blank is annealed for 24-48 h uniformly at 450-550 DEG C; B, the annealing temperature is controlled to be 360-440 DEG C; single-pass 2-5% hot rolling pre-deformation is performed after inner temperature and outer temperature are uniform; temperature is continuously controlled to be 360-440 DEG C; then single-pass high reduction rolling deformation not less than 60% is performed, so that a thick plate blank is obtained; then water cooling or air cooling is performed; C, the cooled thick plate blank is subjected to 0.5-3h solid solution treatment at 450-550 DEG C, and then is subjected to water quenching; D, the water quenched thick plate blank is subjected to 6h of pre-aging treatment at 150-250 DEG C, and then is air-cooled to room temperature; and E, the thick plate blank which is air cooled to the room temperature is subjected to 40-60% of cold rolling deformation, and then is subjected to final-aging treatment at 120-200 DEG C. The plate made with the rolling method has ultrahigh strength, high damage-resistance and long service life.

The invention belongs to the field of electrotechnics, and provides a method for preparing an aluminium magnesium silicon alloy rod base and preparing a high-strength aluminium magnesium silicon alloy conductor. Through a smelting technique and refining especially the control of a rolling technique, an aluminium magnesium silicon alloy rod base with a specific state is prepared, and can be directly pulled, after the natural aging, to obtain an aluminium magnesium silicon alloy wire that accords with LHA1 and LHA2 requirements. As compared with a conventional technique, the aluminium magnesiumsilicon alloy rod base prepared by the method provided by the invention is stable in performance, and the aluminium magnesium silicon alloy wire prepared by the aluminium magnesium silicon alloy rod is stable in linearity without any artificial aging treating, thereby substantially reducing the cost for producing the aluminium magnesium silicon alloy wire and fully meeting the requirement of an aluminium alloy wire used for an overhead twisted wire.

The high strength alloy for building section consists of Al in 95.75-96.5 wt% and M in 2.95-3.7, with M being Mg, Si, Cu and Fe. The production process of the alloy includes the following key steps: compounding based on the formulation, smelting, semi-continuous casting, hot extruding to form, on-line water quenching, and artificial ageing. The Al alloy thus produced has tensile and compression strength over 320 MPa, yield strength over 270 MPa, elongation over 10 %, and excellent corrosion resistance, extrusion performance and weldability.

The invention relates to a production method of high-strength large-elongation aluminum-clad steel wire, comprising the following steps: 1) hot-drawing high-carbon steel wire rod to different wire diameters through cold drawing; 2) carry out lead bath quenching treatment on that steel wire, and carry out on-line pickling and rinsing to obtain a pretreated steel wire; 3) uniformly cover an outer lay of that pretreated steel wire with a layer of aluminum to form a cladding blank; 4) that coat blank is drawn into a super-high-strength aluminum clad steel wire semi-finished product through multiple passes of a bimetal synchronous deformation wire draw machine; 5) age that semi-finished product of the high-strength aluminum-clad steel wire through a high-temperature box. The method of the invention changes the traditional lead bath heat treatment temperature, The tensile strength of Al-clad steel wire is increased by multi-pass synchronous deformation and drawing with small compression ratio, and the elongation of Al-clad steel wire is increased by high temperature aging treatment. The ultimate tensile strength >= 1700 MPa, elongation >= 3. 0%, and other indexes are in accordance with the requirements of Al-clad steel GB/T17937-2009 standard, thereby meeting the requirements of high strength and high elongation and meeting the application requirements.

The invention discloses a high-strength aluminum alloy which is an Al-Zn-Mg-Cu aluminum alloy. The high-strength aluminum alloy comprises the following components in percentage by mass: 7.0-9.0 percent of Zn, 1.3-2.0 percent of Mg, 1.5-3.0 percent of Cu, no more than 0.1 percent of Si, 0.1-0.3 percent of Mn, no more than 0.3 percent of Fe and the balance of Al and inevitable trace elements, wherein the ratio of Zn to Mg is 3.0-3.5. In such a way, the specific strength, the hardness, the corrosion resistance, the toughness, the machining performance, the welding performance and the like of the aluminum alloy can be improved.

The invention relates to a weldable, high-strength aluminium alloy wrought product, which may be in the form of a rolled, extruded or forged form, containing the elements, in weight percent, Si 0.8 to 1.3, Cu 0.2 to 1.0, Mn 0.5 to 1.1, Mg 0.45 to 1.0, Ce 0.01 to 0.25, and preferably added in the form of a Misch Metal, Fe 0.01 to 0.3, Zr<0.25, Cr<0.25, Zn<1.4, Ti<0.25, V<0.25, others each <0.05 and total <0.15, balance aluminium. The invention relates also to a method of manufacturing such an aluminium alloy product.

The invention provides a high-strength 5052 aluminum alloy. Wherein, optimizing and adjusting the chemical intergradient and content within GB/T3190-1996; letting the alloy achieve final index: tensile strength ªÊbí¦300MPa, yield strength ªÊsí¦240MPa, and specific elongation í¦10%. This product has wide application.

The invention relates to an ultra-low loss and ultra-low temperature OPGW (optical fiber composite overhead ground wire) and a production method thereof, which are particularly applicable to remote large-capacity low-loss EHV (extra-high voltage) long-distance power transmission networks, and can be used in the filed of communications in various severe environments with high elevation, severe lowtemperature, dry and changeable and windy weather and the like. The OPGW comprises ultra-low loss fibers, G652D fibers, low-temperature fiber paste, first stainless steel tubes, second stainless steel tubes, internal high-strength aluminium sheathed steel wires and external high-strength aluminium sheathed steel wires; the inside of the first stainless steel tube is provided with the ultra-low loss fibers and uniformly filled with the low-temperature fiber paste so as to form a first stainless steel fiber unit; and the inside of the second stainless steel tube is provided with the G652D fibers and uniformly filled with the low-temperature fiber paste so as to form a second stainless steel fiber unit; the first and second stainless steel fiber units are synchronously stranded with the internal aluminium sheathed steel wires and uniformly daubed with the fiber paste; the external high-strength aluminium sheathed steel wires are stranded at the outer layer of the obtained product, and thus a double-layer armored ultra-low loss and ultra-low temperature OPGW.

The invention relates to a 3D printing process method of a high-strength aluminum-magnesium alloy, and belongs to the technical field of 3D printing. Firstly, high-strength aluminum-magnesium alloy raw materials are mixed evenly through heating and melting; then high-quality aluminum-magnesium alloy powder is prepared from the high-strength aluminum-magnesium alloy in a molten state through a gasatomization technology, and aluminum-magnesium alloy powder for 3D printing is obtained after drying; and printing parameters are adjusted, 3D printing is carried out according to 3D model data of parts in printing equipment with inert gas introduced, and a 3D printing product with the high-strength aluminum-magnesium alloy as a raw material is obtained. Compared with the prior art, as for the product printed through the process method, the relative density can reach 99% or above, the Vickers hardness can reach 110 HV or above, the tensile strength can reach 430 MPa or above, the elongation can reach 21%, through proper heat treatment, the Vickers hardness of a sample can reach 150 HV or above, the tensile strength can be further increased to 520 MPa or above, and the elongation is maintained at 17% or above.