59 results about "6063 aluminium alloy" patented technology

The invention opened a high strength and high extensibility 6063 Al alloy which contain the Cu, Mn, chrome, Fe, Zn, Ti, Al. The process is: a, founding: adding the material to the furnace melting stir ring and skimming coving refining skimming and refining thermal retardation casting ingot. b extruding and heat processing: isotroping air cooling, heating extruding quenching cutting cooling stretching straightening aging treatment product. The process has improved the mechanics of the alloy, also the elongation percentage (60%) and the intensity (40%). The tensile strength has been improved to 280-300 MPa, the elongation percentage is improved to 13%. So it satisfy the windows and the curtain wall's need.

The invention discloses a novel 6063 aluminum alloy material. Rare earth elements are added into the original 6063 aluminum alloy. The novel 6063 aluminum alloy material comprises, based on the weight percentage,0.36%- 0.4% of Si, 0.48% - 0.52% of Mg, 0 -0.35% of Fe, 0 -0.1% of Cu, 0 - 0.05% of Mn, 0 - 0.05% of Cr, 0 - 0.05% of Zn, 0 - 0.05% of Ti, 0.18%-0.22% rare earth elements, 0-0.1% of the remaining impurities and the balance of Al. According to the invention, the content of Mg and Si is controlled within a narrow range. At the same time, cerium-based mixed rare earth elements and alloying element boron are added, which keeps alloy material high strength and high electrical and thermal conductivity; improves machining property and plastic extrusion; and improves production efficiency.

The present invention belongs to the field of aluminum and aluminum alloy connecting material, relates to aluminum brazing material, and is especially one kind of fast cooled Al-Si-Cu-Zn brazing material for brazing aluminum and aluminum alloy and its preparation process. The Al-Si-Cu-Zn brazing material consists of Si 5.0-12.5 wt%, Cu 15.0-30.0 wt%, Zn 2.5-7.5 wt%, Sr 0.001-0.5 wt% and Al for the rest. The Al-Si-Cu-Zn brazing material is prepared through one single roll and fast cooling process. It has melting temperature of 500-525 deg.c and brazing temperature of 530-570 deg.c, and is suitable for brazing aluminum and aluminum alloy with solidus temperature over 530 deg.c.

The invention discloses a high-strength aluminum alloy solder for brazing at medium temperature and a preparation method thereof. The chemical compositions of the solder include: by mass percentage, 5.0%-7.0% of Si, 10.0%-12.0% of Cu, 3.0%-4.0% of Ge, 2.0%-3.-% of Ni, and the balance Al. The solder is prepared by the melt quick-cooling technology with the melting temperature ranging from 514 DEG C to 538 DEG C and the brazing temperature ranging from 540 DEG C and 560 DEG C, is applicable to brazing of aluminum alloy with the solidus curve higher than 560 DEG C, is particularly suitable for heat-treatable strengthened aluminum alloy which requires solution treatment at the temperature not higher than 530 DEG C after being brazed, and can be adaptable to the brazing methods including brazing in protective gas, vacuum brazing, induction brazing, flame brazing and the like. With the solder, aluminum alloy 6063 is brazed in a soldering flux QJ201 gas protection furnace, soldered joints are subjected to T6 heat treatment, and the shearing strength of the soldered joints is higher than 91Mpa.

The invention belongs to the field of 6 series aluminum alloy materials, and particularly relates to a manufacturing method of 6036 aluminum alloy sections. According to the existing 6036 manufacturing technology, waste products are likely to be produced, and therefore the manufacturing cost is improved. In order to solve the problem, the manufacturing method of the 6036 aluminum alloy sections comprises a casting process, an extrusion process and an aging process. In the casting process, ingredients are controlled within a certain range, and impurities are reduced. In the gas hole extrusion process, air cooling adopts the water cooling process, and adverse factors of deformation and difficult size control caused by water cooling to production are reduced, and the production efficiency and the first-pass yield are greatly improved. By means of the manufacturing method, 6036 aluminum alloy sections achieve the mechanical performance of 6063-T6, the strength of extension is larger than or equal to 250 MPa, the yield strength is larger than or equal to 220 MPa, and the percentage elongation after fracture is larger than or equal to 10%.

The invention provides a preparation process of high-strength and high-plasticity 6061 and 6063 aluminum alloy and sectional material thereof. The preparation process is realized by adding a proper amount of Al-Ti-C-Re grain refiner in an aluminum alloy melting process, wherein the characteristic components of the grain refiner comprise 0.01-10 percent of Re (mixed Re taking Ce as a main component), 0.1-3.5 percent of Ti and 0.1-3.5 percent of C; preparing an aluminum alloy rod with superfine crystal grains; and homogenizing and extruding to form the aluminum alloy sectional material with certain high strength and high plasticity. The invention can be applied to manufacturing other series of aluminum alloys with high strength and high plasticity.

The invention provides a rare earth aluminum alloy with high thermal conductivity. Mixed rare earth element RE composed of lanthanum and yttrium is added into 6063 aluminum alloy to form the rare earth aluminum alloy, wherein in the 6063 aluminum alloy, Mg accounts for 0.45 to 0.8 weight percent of the total weight of the rare earth aluminum alloy, Si accounts for 0.25 to 0.6 weight percent of the total weight of the rare earth aluminum alloy, Fe accounts for less than 0.35 weight percent of the rare earth aluminum alloy, Cu accounts for less than 0.1 weight percent of the rare earth aluminum alloy, Zn accounts for less than 0.1 weight percent of the rare earth aluminum alloy, and Ti accounts for less than 0.1 weight percent of the rare earth aluminum alloy. Mixed RE accounts for 0.1 to 0.5 weight percent of the total weight of the rare earth aluminum alloy, and comprises 5 to 80 weight percent of lanthanum and 1 to 20 weight percent of yttrium. Besides the above elements, the rest component of the rare earth aluminum alloy is Al. By adding a certain amount of mixed rare earth, the thermal conductivity of the aluminum alloy, the plastic forming property and processing property of the alloy are improved.

The invention relates to a smelting process for an aluminum-silicon master alloy. 75 percent of industrial pure aluminum ingot with the aluminum content being more than or equal to 99.7 percent and 12.5 to 13 percent of 6063 aluminum remelted regenerable ingot, which are measured according to a weight percent, are added into a reverberatory furnace at the temperature of 1000 to 1200 DEG C, 12 to 12.5 percent of well-measured pure silicon is added into the reverberatory furnace after the ingot is completely smelted to generate aluminum-silicon master alloy melt, and the aluminum-silicon master alloy melt is made into the aluminum-silicon master alloy through a smelting technique, a casting technique and a sawing technique. On the premise of not increasing equipment investment, the existing aluminum alloy smelting reverberatory furnace with an environment-friendly device system, a deep well and a casting system capable of continuously casting multiple cylindrical ingots at a time are used for smelting and casting the aluminum-silicon master alloy cylindrical ingot so as to substitute a traditional outdated production technique of the aluminum-silicon master alloy adopting a small-sized ground furnace to smelt and adopting a manual pouring way and an automatic cooling way of ingot molds, so that the energy can be saved, the environment can be protected, the production efficiency can be greatly improved, the labor intensity can be alleviated, the balance of silicon content in the aluminum-silicon master alloy and adequate chemical combination of aluminum and silicon as well as refining of the crystal grains can be better guaranteed, and the transformation, upgrading and development of enterprises can be promoted.

The braze welding of 6063 aluminum alloy uses traditional Nooclock non-corrosive braze agent protecting the channel cold plate, adding a layer of pure aluminum or 3A21 aluminum alloy into the welding seam. It is low in cost, high in efficiency, simple in process with low operation requirement.

The invention discloses a preparation method of reclaimed 7075 aluminum alloy containing rare earth. The invention belongs to the technical field of materials. the method comprises steps that: surface impurities are removed from waste 6063 aluminum; smelting material alloys are prepared; metal aluminum is heated until melted; a mixed salt is added to the melted aluminum; the waste 6063 aluminum is added to the mixture, and the mixture is melted; metal silicon, Al-30Cu alloy, Al-10Mn alloy, Al-2Cr alloy and Al-3Ti alloy are pressed in the mixture and are melted; Al-RE alloy, metal magnesium and excess metal magnesium and metal zinc are added to the mixture; the mixture is melted and heated; mixed gas of argon and nitrogen is delivered into the mixture; the mixture is settled and used for casting; a cast ingot is subject to preheating and hot rolling; the rolled material is subject to a solid solution treatment and water quenching; then the material is subject to an aging treatment for 15-20h under a temperature condition of 110-115 DEG C. With the method, the consumption of industrial pure aluminum is reduced, waste aluminum is cyclically utilized, and sustainable development of aluminum industries can be realized. The method has advantages of high recovery rate, low cost, and low pollution.

The present invention relates to a fluoride soldering flux without causticity of a soldering 6063 aluminum alloy and the method of preparation, which belongs to soldering material field of the aluminum and the aluminum alloy. The compounding ratio of the component by the weight percent is: the neutral QF soldering flux: 99.0 to 99.7 percent; ZnSiF6: 0.3 to 1.0 percent. The neutral QF soldering flux is prepared by adopting the chemical synthesis, and the ratio of K+ / A13+ is 1.9175, and the melting point of the soldering flux is 560 DEG C, and the soldering temperature is 580 to 620 DEG C. The soldering flux protects the soldering 6063 aluminum alloy in the stove by cooperating the AI-11.7Si eutectic soldering material nitrogen gas. The length of the clearance with the same clearance of the soldering material is more than 160 mm. The obverse and inverse surfaces of the soldering clearance are of good shaping with even welding root, and have no disadvantages of air holes on the surface and claming dregs. The cutting intensity for the soldering is more than 120 MPa. The soldering flux preparation art and the material of the present invention have low price, and do not absorb the damp. The present invention does not loose the efficiency when stored in the atmosphere for a long time, which is suitable for being widely applied.

The invention discloses a surface treatment process of a 6063 aluminum alloy profile, and relates to the related technical field of aluminum alloy profile production and processing. The process comprises the following steps of A, cutting; B, sand blasting, C, oil removing, D, washing, E, alkali washing, F, neutralizing, G, oxidizing, H, hole sealing, I, airing, and J, forming. Compared with a traditional acid etching process, the process has the advantages that pollution is less, aluminum material is more saved, the overall quality of the aluminum material is guaranteed, and the utilization rate of the aluminum material is higher; when the 6063 aluminum alloy is processed through a soaking pool, NaF is added into an alkali etching agent, so that the outer surface of the 6063 aluminum alloycan be effectively sealed, and the problem of uneven corrosion on the outer surface of the 6063 aluminum alloy is solved; and the gluconate is added into the alkali etching agent, through the gluconate, the leveled surface reduction efficiency of the 6063 aluminum alloy can be improved when the 6063 aluminum alloy is soaked and processed, so that the outer surface of the 6063 aluminum alloy is more leveled.

This invention provides a 6063 aluminum alloy made by cryptomere aluminium ingot. It is constituted by Al, Si, Mg, RE, B elements, quality portion is that Si 0.20~0.6%, Mg 0.45~0.9%, REíœ0.35%, Bíœ0.01%. It also provides a method of preparing the 6063 aluminum alloy, aluminum oxide and titanium oxide compound is added into aluminum electrolyte tank, cryptomere aluminium ingot with titanium quality portion is 0.01~0.20% is generated, alloy element is added to cryptomere aluminium ingot directly from electrolyte tank or by cryptomere aluminium ingot melting to melted 6063 aluminum alloy. Because of its special titanium adding mode, production cost is cheap, as-cast grain is little and uniform, its tensile strength is equal to 6063 aluminum alloy thinned by aluminium titanium boron hardner, and extensibility is increased 20% and better surface capability can get. 6063 aluminum alloy after pressure has good ageing characteristic, it can reach high intension in short time and keep high intension long time, it is hard overaging.

The invention relates to a method for coating aluminum alloy by using a micro-arc oxidation green film layer. The method comprises the following steps of using the 6063 aluminum alloy as a matrix; adding glycerinum and potassium fluoride (KF) in a system in which Na2SiO3-KOH serves as main electrolyte; preparing coloring electrolyte by using NH4VO3 as coloring agents; and preparing a green micro-arc oxidation ceramic film layer. Influences of electrolyte parameters and electric parameters on an organization structure and the performance of the micro-arc oxidation film layer are researched. Phase composition, microstructure and element contents of the film layer are respectively represented through an X-ray diffractometer (XRD), a scanning electron microscope (SEM) and an energy dispersive spectrometer (EDS), the thickness of the micro-arc oxidation ceramic layer and the strength of bonding between the micro-arc oxidation ceramic layer and the matrix are detected by an eddy coating thickness gage and a scratch spectrometer, the electrochemistry corrosion resisting property of the ceramic layer is analyzed by using an electrochemical corrosion method, technological parameters are optimized, and a green micro-arc oxidation film with high performance is prepared.

The invention discloses a rolling heat treatment technology for improving the strength and plasticity of a 6063 aluminium alloy. The rolling heat treatment technology comprises the following steps that the aluminium alloy is subjected to annealing treatment for 1h, with the annealing temperature being kept between 505 degrees and 515 degrees; the aluminium alloy after the annealing treatment is subjected to water quenching treatment, and after the temperature of the aluminium alloy reaches room temperature, the aluminium alloy is immediately put in a ready refrigerating chamber for refrigerating storage; the refrigerated aluminium alloy is subjected to rolling treatment within the temperature range of minus 200 degrees to minus 190 degrees by a ready rolling mill till an aluminium alloy sample of which the thickness is decreased by 80% is obtained, wherein the aluminium alloy is required to be submerged in liquid nitrogen for 10-15 before and after each pass reduction treatment and the pass reduction is 5%; the aluminium alloy sample is subjected to warm rolling treatment within the temperature range of 195 degrees to 205 degrees till the reduction reaches 50%, wherein the pass reduction is 20%, and the aluminium alloy sample is required to be heated to 200 degrees and be subjected to heat preservation for 4-5min before and after each pass warm rolling; and the aluminium alloy after the treatment is subjected to heat preservation at 100 degrees for 60h.

The invention belongs to the technical field of aluminum alloy used for vehicles and particularly relates to a method for preparing a graded pressurization liquid forging aluminum alloy engine cylinder cover. The method comprises the steps that 6063 aluminum alloy is refined; the molten aluminum alloy is poured into a lower die body of a die; when the temperature of the molten aluminum alloy is lowered to 680 DEG C-690 DEG C, the first time of pressurization is conducted, and the pressurization is stopped when the liquid level of the molten aluminum alloy is 1 mm lower than the edge of a die cavity; the pressurization is conducted for 5 seconds; when the temperature of the molten aluminum alloy is lowered to 585 DEG C-650 DEG C, the second time of pressurization is conducted; after the die cavity is filled with the molten aluminum alloy, the pressure is maintained for 20 seconds, and the pressure is relieved after the pressure maintaining is finished; the cylinder cover is taken out for being subjected to water quenching and heat treatment, and the graded pressurization liquid forging aluminum alloy engine cylinder cover is obtained; the tensile strength of the cylinder cover is equal to or higher than 400 MPa, and the elongation percentage of the cylinder cover is equal to or higher than 11.5%. According to the method, high comprehensive mechanical properties of the cylinder cover are guaranteed through the graded pressurization, and the quality stability of the cylinder cover is improved.

The invention discloses a preparation method of a strontium-containing aluminum alloy 6063. The preparation method comprises the following steps of sequentially adding copper, aluminum-manganese, andaluminum-silicon intermediate alloy into aluminum melted liquid, standing after the added alloy element is completely melted, reducing the temperature of the formed first melted liquid to 730 to 740 DEG C, maintaining the temperature constant, adding a magnesium ingot, completely melting the magnesium ingot to form second melted liquid, adding a deterioration agent aluminum-strontium intermediatealloy into the second melted liquid, completely soaking the aluminum-strontium intermediate alloy into the second melted liquid, introducing high-purity nitrogen gas, refining, standing, and casting,so as to obtain a bar of aluminum alloy 6063; performing homogenization treatment on the obtained bar of aluminum alloy 6063, and cooling; extruding to form a profile with a needed shape and size; performing aging solution treatment on the profile, so as to obtain the strontium-containing aluminum alloy 6063. The strontium-containing aluminum alloy 6063 has the advantages that the aluminum-strontium intermediate alloy is added in the aluminum alloy melting process, and the mechanical property of the aluminum alloy is improved according to a deterioration theory of strontium and the refining function of crystal grains.

The invention discloses a 6063 aluminum alloy material for solar energy aluminum frame production. The 6063 aluminum alloy material comprises following components in percentage by weight: 0.42 to 0.45% of Si, 0.58 to 0.62% of Mg, 0 to 0.20% of Fe, 0 to 0.10% of Cu, 0 to 0.10% of Mn, 0 to 0.10% of Zn, 0 to 0.10% of Cr, 0 to 0.10% of Ti, and the balance being Al, wherein the total percentage by weight is 100%. The formula of aluminum alloy (natural standard 6063) is improved; the performances are directly optimized; the hardness of 6063 aluminum alloy is increased by 4-6 HW, the production costis reduced, and the work efficiency is improved.

The invention relates to brazing processes, particularly to a salt bath brazing process of a 6063 aluminum alloy. The process comprises the steps of pre-brazing preparation, heating, heat preservation, cooling and post-brazing treatment. The 6063 aluminum alloy brazed through the process has good mechanical performance and good physical performance. According to the salt bath brazing craft process of the 6063 aluminum alloy, the operation steps are simple, convenient and easy to master; constant temperature control is performed; heating is even and rapid; the quality of brazing seams is high; brazing of a large amount of brazing seams can be completed in one step, so that high production efficiency can be achieved. Therefore, the salt bath brazing craft process of the 6063 aluminum alloy is good in quality.

The invention discloses an aluminum alloy material capable of being molded by high-speed extrusion, which comprises the following components in percentage by weight: 0.11-0.15% of Mn, 0.11-0.15% of Cu, 0.38-0.46% of Si, 0.47-0.55% of Mg, 0-0.25% of Fe, 0-0.02% of Cr, 0-0.02% of Zn, 0-0.02% of Ti, and the balance of Al. The invention also discloses a preparation method of the aluminum alloy material capable of being molded by high-speed extrusion; and compared with traditional aluminum alloy 6063, the speed for extruding sectional materials by the aluminum alloy material can be improved greatly, and the production efficiency of the aluminum alloy sectional material can be enhanced remarkably.

The invention discloses a method for achieving rapid low-temperature extrusion formation of a 6063 aluminum alloy. The method comprises the following steps: 1) preparing the following components of an aluminum alloy bar (in percentage by mass): 0.440-0.465% of Si, and 0.480-0.525% of Mg; 2) preheating the aluminum alloy bar to be 410-440 DEG C before extrusion; 3) performing mold design, thereby confirming that the chamfering of a discharge hole is 25 degrees, wherein the chamfering of a feeding hole is 30-45 degrees, and a discharge angle inclines for 3-5 degrees; and 4) rapidly quenching an extruded aluminum profile, wherein the cooling speed is up to 250-300 DEG C / minute. By increasing the content of Si and reducing the content of Mg, the rheological property of the alloy is improved, the extrusion force is reduced, and the extrusion speed is increased; preheating temperature of the alloy bar is reduced, and damage caused by heating effect is reduced; as the chamfering of the feeding hole of a mold is increased, on one hand, the pressure borne in the bridge location extrusion process is reduced, and on the other hand, as the chamfering of the feeding hole is increased, the split ratio is greatly increased, flowing and welding of metal are facilitated, the extrusion pressure is also reduced, and the extrusion speed is increased; as the profile is rapidly quenched, separation of the strengthening phase Mg2Si is inhibited, and the aluminum profiled obtained through extrusion has ideal strength.

A method for producing 6063 aluminum alloy bars by a rapid silicon dissolving method comprises the following steps: smelting a solid cold charge; performing secondary batching on industrial silicon blocks; evenly spreading an aluminum slag separating agent to perform slag removal treatment; adjusting temperature of molten aluminum to 720 to 740 DEG C, turning off all fire lances, and with stirring, adding magnesium blocks and adding burning loss amount; adding a refining agent to perform refining treatment on the molten aluminum; performing micro adjustment on components; standing; and discharging water to pour the aluminum alloy bars, and meanwhile adding aluminum-titanium-boron wires. The actual yield of the 6063 aluminum alloy bars produced by the method disclosed by the invention reaches up to 97 percent; smelting time is greatly shortened; burning loss of the molten aluminum is relatively low; surface quality of the bars reaches the standard; an Mg2Si strengthening phase is evenly dispersed; tissue of each bar is uniform and is free of segregation; the mechanical property of each bar is increased in comparison with that of a bar produced by an intermediate alloy method; a time-consuming and labor-consuming intermediate alloy preparation process is omitted; the method disclosed by the invention has a simple and easy process, is stable in production level, low in time, labor and energy cost and low in environmental pollution, can be used for preparing high-quality 6063 aluminum alloy bars and can also be used for smelting other aluminum alloys of which the silicon content is lower than 1.2 percent.

The invention relates to a processing method for 6063 aluminum alloy for an exterior part of an electronic product. The method comprises the steps: firstly, homogenizing a 6063 cast ingot; arranging a heating step in the homogenization process; then, carrying out hot rolling on the homogeneous ingot, wherein the initial rolling temperature is 460-520 DEG C, and the final rolling temperature is lower than or equal to 300 DEG C; and finally, carrying out cold rolling, solution treatment and aging treatment. By controlling a process, the surface fraction of a thick and large intermetallic compound can be smaller than 0.4%, while the surface fraction of a dispersive intermetallic compound is larger than 1.2%, and the distance between dispersed phases is smaller than 1.5 mu m, so that a material is uniform in structure, furthermore, the defect of anodized bank marks is avoided, and the anodizing effect of the material is improved.

The invention belongs to the technical field of alloy and specially relates to yttrium-containing 6063 aluminum alloy and a preparation method for the same. The yttrium-containing 6063 aluminum alloyprovided by the invention, by mass, comprises the following ingredients including 0.45%-0.54% of Si, 0.52%-0.56% of Mg, no more than 0.35% of Fe, no more than 0.05% of Cu, no more than 0.07% of Mn, nomore than 0.05% of Zn, 0.0075%-0.01% of Ti, 0.1%-0.2% of Y (yttrium), 0.0015%-0.002% of B and the balance being Al. The aluminum alloy and the method provided by the invention have the beneficial effects that scopes of low contents of elements such as Mg and Si are determined; and the strength of the yttrium-containing 6063 aluminum alloy is enhanced through simultaneous precipitation of boridesand intermetallic compounds. According to results of the embodiment, the tensile strength of the yttrium-containing 6063 aluminum alloy provided by the invention reaches 230MPa and the elongation of the yttrium-containing 6063 aluminum alloy reaches 25% under a room temperature.

The invention relates to a lightweight high-strength plug-in composite floor. The lightweight high-strength plug-in composite floor comprises a surface plate, a middle layer arranged below the surface plate and a bottom plate arranged below the middle layer, wherein one end of the middle layer is provided with an edge-sealing aluminum beam; the edge-sealing aluminum beam is internally provided with a rectangular hollow cavity; a plug-in strip is mounted in the rectangular hollow cavity in a clearance fit manner; and the plug-in strip is provided with rectangular bulges. A molding process for the composite floor is an advanced preparation technology for composite materials. According to the invention, fiber cloth is laid on the upper and lower surfaces of a foam board as needed; related auxiliary materials are placed in a vacuum bag; materials in a resin tank are introduced to a place located between a fibrous layer and foam and allowed to wet the fibrous layer in virtue of a vacuum technology; and then high-temperature curing is carried out in a baking oven. A production method for the composite floor has the characteristics of simple process and high machining efficiency. 6063 aluminum alloy has the characteristics of light weight and high strength.

The invention discloses a production method of 6063 aluminium alloy section. The production method comprises following steps: a, aluminium alloy ingot casting is heated to 400 to 450 DEG C for longerthan 2h of thermal insulation treatment, wherein the aluminium alloy ingot casting comprises, by mass, 0.53 to 0.57% of Si, Fe<=0.15%, 0.16 to 0.2% of Cu, Mn<0.05%, 0.88 to 0.92% of Mg, 0.06 to 0.10%of Cr, Zn<0.05%, Ti<0.05%, and the balance Al and unavoidable impurities; b, an extrusion die is heated to a temperature higher than the temperature of the aluminium alloy ingot casting, and thermal insulation treatment is carried out; c, the aluminium alloy ingot casting is subjected to extrusion through passing through of the extrusion die at a speed of 1 to 1.5cm / min; d, the obtained aluminiumalloy section is heated to 515 to 525 DEG C, thermal insulation is carried out for 30 to 120min, water cooling is carried out in a quenching zone, thermal insulation is carried out for 4 to 8min at 170 to 180 DEG C, and aging treatment is carried out so as to obtain the 6063 aluminium alloy section excellent in tissue and component uniformity, performance, and comprehensive mechanical properties.

The invention discloses 6063 extrusion aluminum alloy. The 6063 extrusion aluminum alloy is characterized by being prepared from, by mass, 0.6-0.7% of Si, smaller than 0.35% of Fe, 0.2-0.3% of Cu, smaller than 0.1% of Mn, 1.0-1.1% of Mg, 0.05-0.08% of Cr, smaller than 0.15% of Zn, smaller than 0.15% of Ti and the balance Al. A new process avoiding coarse 6063 extrusion aluminum alloy crystals is characterized in that in a 6063 aluminum alloy ingot homogenization process, the set temperature is 550 DEG C, and the heat preservation time is 6 h to 8 h; the cooling mode is that water cooling is conducted after the temperature is lowered to 200 DEG C through strong wind cooling, the extrusion temperature is 420-440 DEG C, and the extrusion speed is 1.5-2.0 m / min; according to the extrusion panel quenching process parameters, the furnace heating room temperature is 525 DEG C, the heat preservation time is determined according to the panel thickness, and the ageing process is 175 DEG C and 10 h.

A method for preparing rare earth-containing aluminum alloys, which is carried out in the following steps: (1) treating the surface of waste 6063 aluminum alloys; preparing metal aluminum and the like as smelting material alloys and excess metal magnesium; (2) putting metal aluminum into an induction furnace , after melting, add mixed salt, and then add waste 6063 aluminum alloy; (3) Add part of the smelting material alloy; (4) Use a bell jar to press into part of the smelting material alloy, pour it after degassing; (5) After preheating, heat at 450 Rolling at ±10°C, cold rolling after annealing treatment; (6) Water quenching after cold rolling solution treatment, and then aging. The method of the invention reduces the consumption of industrial pure aluminum, realizes the recycling of waste aluminum alloys, realizes the sustainable development of the aluminum industry, and has the advantages of high recovery rate of waste aluminum, low cost, less pollution and the like.

The invention discloses 6063 aluminum alloy and a processing technique thereof. The processing technique includes the following steps that aluminum ingots and Al-Si intermediate alloy are put into a furnace according to the component design requirement, and after the aluminum ingots and Al-Si intermediate alloy are melted, magnesium ingots, Al-rare earth intermediate alloy and Al-Ti-B are sequentially added; after the procedures of deaeration, refining, stirring, drossing and the like are carried out, casting rods in the specification of 100mm*400mm are cast through a semi-continuous water-cooling casting method at the temperature of 730 DEG C; the casting rods are cut into ingot billets in the specification of 100mm*390mm, and the ingot billets are homogenized for 6 h at the temperature of 560 DEG C; and finally, the ingot billets are subjected to hot extrusion to form profile materials through a 6MN extruding machine. After rare earth is added into the 6063 aluminum alloy, and the contents of magnesium and silicon are strictly controlled, so that the hot extrusion performance can be improved. After the rare earth is added into the 6063 aluminum alloy, the shape of precipitates isimproved, a certain refining function is achieved for the structure of casting ingots, a small quantity of a granular rare earth phase is separated out from the structure, and the comprehensive mechanical performance of the alloy is improved.