419 results about "5052 aluminium alloy" patented technology

The present invention relates to a chrome-free passivating liquid for treating aluminum alloy and a method for using the same; the components of the passivating liquid and the weight concentration of the elements thereof consist of fluorin titanate comprising Ti (IV) between 0.05 wt percent and 0.15 wt percent, fluorin zirconate comprising Zr (IV) 0.01 wt percent and 0.05 wt percent and organic phosphate compound comprising 0.02 wt percent to saturated concentration. The use method of the passivating liquid of the invention has the following procedures: after grease on the surface of the aluminum alloy is removed, the aluminum alloy is treated by alkali cleaning, deoxidation and activation; when the temperature is between 25 DEG C and 60 DEG C and the PH value is between 3 and 3.5, the aluminum alloy is treated by impregnating or spraying for 2 min to 5 min. In the passivating liquid of the invention, organic phosphoric acid is directly added to a titanium zirconium system; the formed zirconium phosphate composite structure can obviously improve the corrosion resisting property of a passivating film and the adhesive capactiy of polymer coating (primer) on the surface of aluminum alloy.

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 method for surface treatment of an aluminium alloy and a product of the aluminium alloy. The method comprises the steps of punching the aluminium alloy into a required shape; conducting mechanical polishing on the aluminium alloy which is subjected to punch forming; conducting degreasing treatment on the aluminium alloy which is subjected to mechanical polishing in a degreasing agent; placing the aluminium alloy which is subjected to degreasing treatment into an acid liquor tank for first-time anodic oxidation; placing the aluminium alloy which is subjected to first-time anodic oxidation into dye for dying, and conducting hole sealing treatment after dying; conducting screen printing on the surface of the aluminium alloy which is subjected to dying and hole sealing treatment with photosensitive ink, and conducting exposure, developing and photocuring treatment; conducting oxidation film removing treatment on the printed aluminium alloy in an alkaline solution; conducting sand blasting treatment on the treated product of the aluminium alloy; conducting second-time anodic oxidation on the product of the aluminium alloy, which is subjected to sand blasting treatment, and conducting hole sealing treatment on the product which is subjected to second-time anodic oxidation; and removing the photosensitive ink from the surface of the product of the aluminium alloy. The product of the aluminium alloy is processed by the method.

The invention provides a refiner of aluminium and aluminium alloy with high efficiency and low cost and a preparation method thereof, belonging to the technical field of a refiner of aluminium and aluminium alloy and solving the problems that in the prior art, the refiner of the aluminium and aluminium alloy has higher requirements for technique equipment, trivial and complex technique, excessive cost, poor product performance and the like. The refiner of aluminium and aluminium alloy with high efficiency and low cost is aluminium-titanium-carbon-rare earth master alloy; the master alloy contains 3% to 10wt% of Ti, 0.02 to 1wt% of C, 0.02 to 1wt% of RE, aluminium and impurity elements; and the preparation method comprises the following steps of: adopting the rare earth compound as a reacting promoter, casting after smelting reaction and obtaining the refiner. The preparation method has low cost, high efficiency and easy industrialization; the raw material has low price and wide source; the preparation can be carried out in a well-type resistance furnace, does not need extra stirring equipment, and has simple technique; and the refiner has the advantages of capability of being used with a modifier simultaneously, stable organization, refining effect and the like.

The invention relates to an aluminium alloy and a preparation method thereof, and in particular relates to a damage-resistant aluminium alloy and a preparation method thereof. The aluminium alloy disclosed by the invention comprises the following components in mass percentage: 3.0-4.0% of Cu, 0.7-1.5% of Mg, 0.15-0.6% of Mn, 0.3-0.8% of Ag, 0.08-0.2% of Zr, and the balance of Al and trace impurity elements, wherein the total content of the impurity elements is less than 0.1%. On the basis of a traditional damage-resistant Al-Cu-Mg alloy (2X24 alloy), the contents of Cu and Mg main alloy elements are reduced; simultaneously, Ag and Zr are added, therefore, the novel high damage-resistant Al-Cu-Mg-Ag-Mn-Zr alloy is designed. Compared with 2524 alloy, the aluminum alloy disclosed by the invention has the advantages that in the event that the intensity of the aluminum alloy is higher than that of the 2X24 alloy, the crack growth rate of the aluminum alloy is reduced by above 1/3; the tensile strength sigma b of the prepared aluminium alloy is 425-480 Mpa; the yield strength sigma 0.2 of the prepared aluminium alloy is 320-390 MPa; the elongation rate delta of the prepared aluminium alloy is 18-25%; in addition, when delta K=30 MPa*m<1/2>, the crack growth rate is 1.1*10<-3>-2.0*10<-3>-mm/cycle.

The invention discloses a spinning machining method for an aluminium alloy thin-walled revolution body. The spinning machining method comprises the following steps: producing an aluminium alloy spun blank with required dimensions, and carrying out annealing treatment on the aluminium alloy spun blank; carrying out shearing spinning on the aluminium alloy spun blank to obtain a primary conical barrel; carrying out annealing treatment on the primary conical barrel, and cutting a process allowance at a large end to form a secondary conical barrel; carrying out common spinning on the secondary conical barrel on a spinning machine to obtain a pre-spun aluminium alloy thin-walled revolution body; and carrying out annealing treatment and surface polishing treatment on the pre-spun blank, and then cutting process allowances at the two ends of a spun part by using a plasma cutting machine, so as to obtain the aluminium alloy thin-walled revolution body meeting process requirements. According to the invention, the aluminium alloy thin-walled revolution body is machined by virtue of the technologies of shearing spinning and common spinning; the dimension and structural performance requirements of a bullet shell are met; a machining method and a stamping-welding method can be replaced; and a low-cost and efficient machining method is provided for machining for an aluminium alloy shell of a bullet.

This invention relates to the crystal grain refining agent which is used to produce aluminium alloy and the method of preparation and application thereof. It is composed of intermediate alloy Cu-P and Al-Ti-B and the crystal grain refine reagent has nanometer crystal band, the weight ratio of the alloy Cu-P to alloy Al-Ti-B is 0.35-0.45:0.65-0.55, the average thickness of bank is 0.3-0.6mm, and the average width is 0.4-1.2mm. The bank is made by quickly quenching flailing. It can be applied to the plunger of the combustion engine by melting metal casting. During the production of aluminium alloy by melting metal, the primary crystal silicon and eutectic silicon can be refined by adding into the crystal grain refine reagent, this increases the energy of interface, so it can decrease the flaw of casting, the over-all properties of the aluminium alloy can be increased. At last, the mechanical property of plunger which is made of aluminium alloy, the abrasion of it and the lifetime of it can improve distinctly.

The aluminium titanium carbon intermediate alloy grain thinning agent relates to a AlTiC grain thining agent containing TiC granules for thinning aluminium and aluminium alloy and its preparation method. It is characterized by that said alloy composition contains (wt%) 3%-6% of Ti anjd 0.02%-0.5% of C, the reset is aluminium and inevitable impurity, in which the ratio of Ti:C is 25:1. Its preparation method is characterized by that the carbon powder prepared by using one selected from industrial graphite, natural graphite, amorphous graphite, active carbon and carbon black carbon is introduced into aluminium melt by means of graphite rotor of rotary refining equipment and stirred until the aluminium melt contains no monomer carbon.

A preparation method of a high-quality 6061 aluminium alloy forging for semiconductor equipment comprises the following steps of: (1) blank making by a common semicontinuous casting method; (2) homogenization heat treatment of 6061 aluminium alloy by two-stage homogenization technology, wherein a first-stage temperature range is 540-570 DEG C, heat preservation time is selected to be 12-24 hours, a second-stage temperature range is 570-620 DEG C, and heat preservation time is selected to be 18-24 hours; (3) forging technology, wherein a preheating temperature of a press chopping block is 300-350 DEG C, the maximal forging heating time is not more than 3 when multi-heating forging is employed, an upsetting forging ratio for each heating is controlled to be 4-6 when forging with 2-3 heating times is employed, the forging ratio is controlled to be 7-9 when forging with one heating time is employed, and the final forging temperature is controlled to be 320-360 DEG C; (4) solid solution aging technology, wherein a solid solution temperature is 520-540 DEG C, heat preservation time is on a basis of 45 min, the heat preservation time increases by 1 min when the thickness of the forging increases by 1 mm, an aging temperature is 160-180 DEG C, and heat preservation time is between 16-25 hours. The invention provides the preparation method of a high-quality 6061 aluminium alloy forging for semiconductor equipment, and the method has the advantages of strong operability, high yield, stable product performance, high product added value, and the like, is applicable to production for small-lot supply, and has significant economic benefits.

The invention provides an aluminum alloy 5052 having high corrosion resistance and a manufacturing method thereof, which belongs to the technical field of alloy materials and solves the problem of low corrosion resistance of the traditional aluminum alloy 5052 material. The aluminum alloy 5052 having high corrosion resistance comprises the following components in percentage by weight: no more than 0.20% of Si, no more than 0.20% of Cu, 2.4-2.6% of Mg, no more than 0.10% of Zn, no more than 0.10% of Mn, 0.18-0.30% of Cr, 0.01-0.40% of Fe, no more than 0.05% of single other element, no more than 0.15% of total other elements, 0.01-0.8% of rare earth elements and the balance of Al. The aluminum alloy 5052 having high corrosion resistance can improve the corrosion resistance and simultaneously maintain the stabilization of mechanical properties.

The invention relates to a preparation method of a 7B04 aluminium alloy section, which solves the problems that a large-sized round cast ingot is difficult to form and mechanical property and electrical conductivity can not meet index requirements at the same time in the traditional preparation process of the 7B04 aluminium alloy section. The preparation method comprises the following steps of: 1, smelting the round cast ingot of a casting alloy; 2, uniformly annealing; 3, extruding into the section; 4, quenching; and 5, aging to obtain the 7B04 aluminium alloy section. The 7B04 aluminium alloy section has properties meeting the index requirements, and achieves the finished product ratio more than 80 percent.

The invention relates to a preparation technology of aluminum-matrix in-situ composites, in particular to a preparation method of light-weight high-strength aluminum-matrix in-situ composites used in cable testing bridges. The method includes the following specific steps: alloy is melted according to requirements of mixture ratios of components of aluminium alloy 6061, 6063 or 6070; mischmetal with the mass of 0.2 to 0.4 percent of that of the aluminium alloy is added and reaction materials of the composites are added through a dusting device for reaction synthesis of particle reinforced aluminum-matrix composites; chemical constituents are adjusted on grounds of demand; Al-5Ti-1B wires with the mass of 0.15 to 0.20 percent of that of the aluminium alloy are added for refining treatment and then semicontinuous casting; ingots are carried out homogenization treatment; and the testing bridges are obtained through the technologies of hot extrusion and hot treatment. The invention is simple and convenient in technology and controllable in constitution of the composites and the combination property of the bridges of the particle reinforced aluminum-matrix composites is obviously improved, thus meeting requirements of more high-standard construction.

The invention provides a microemulsified cutting fluid. The microemulsified cutting fluid comprises following ingredients, by weight, 3.00 to 21.00% of a pH value conditioning agent, 0.50 to 4.00% of an antirust agent, 0.50 to 2.00% of a bacteriostatic agent, 6.00 to 18.00% of an anionic surfactant, 1.00 to 5.00% of a nonionic surfactant, 1.00 to 4.00% of a corrosion inhibitor, 4.00 to 15.00% of a base oil, and 40 to 50% of water. The microemulsified cutting fluid possesses excellent rust resistance, lubricating properties, and especially excellent corrosion resistance on aluminium alloy, so that a problem that corrosion resistance of conventional microemulsified cutting fluid on different aluminium alloy processing is poor is solved. The microemulsified cutting fluid is suitable for processing of metal such as aluminium parts and steel parts. The microemulsified cutting fluid contains no toxic chemicals, such as nitrite and hydrozybenzene, which are harmful for human body or the environment, is friendly to the environment, and is high in efficiency.

The invention relates to a nickel-phosphorus chemical precipitation plating layer of an aluminium alloy, mainly containing the following components in content by weight: 20-30 grams/litre of hexahydrated nickel sulphate, 20-30 grams/litre of sodium hypophosphite, 15-20 grams/litre of sodium acetate, 6-10 grams/litre of butane diacid, 30-50 grams/litre of complexing agents, 20-60 PPM of stabilizingagent and 30-100 PPM of plating midbodies. The nickel-phosphorus chemical precipitation plating layer has the advantages of fast precipitation, well combining force of a plating layer, brightness andcompactness of the plating layer, excellent stable property of tank liquor, long service life, easy maintenance, and the like.

A aluminium alloy for press casting very thin parts (0.7-1.2 mm) is composed of (by weight) 10.0-14.0 % of silicon, 2.5-4.5 % of copper, 0-2.0 % of nickel, 0-1.5 % of manganese, the total content of nickel and manganese keeps in 0.5-2.0 %. The alloy castability (mold filling ability) increases by more than 20 %. Under high pressure press casting, 0.7-1.2 mm wall casting can be made and can be used as casing of 3C products, also the cost is reduced by more than 20-30 % compared with magnesium alloy.

An anode treatment method of aluminium alloy is used for coloring treatment of die castings of aluminium alloy. The method comprises the following steps: (1) providing a die casting of the aluminium alloy for pre-treating; (2) using an anodized polishing liquid for chemical polishing of the die casting of the aluminium alloy; (3) performing a first glaring treatment for the chemically polished die casting of the aluminium alloy; (4) performing a second glaring treatment for the die casting of the aluminium alloy; (5) dipping the die casting of the aluminium alloy with the second glaring treatment in an acid storage, and electrifying for the anode oxidation treatment; (6) putting the die casting of the aluminium alloy into a staining solution to dye in accordance with required colors; and (7) immersing the dyed die casting of the aluminium alloy into a sealant to seal pores. The anode treatment method of the aluminium alloy can produce uniform-color die-casted aluminum alloy products which can be colored with various colors.

The invention relates to a method for directly electroplating lead on the surface of aluminium and aluminium alloy, comprising the following procedures of mechanical grinding, oiling removing, alkaline degreasing, acid pickling and lead plating. The method is characterized by also comprising the procedures of electric purification and activation between the procedures of alkaline degreasing and acid pickling. The method comprises the following steps: directly electroplating lead on the surface of aluminium and aluminium alloy, and having no need of plating a metal transitional layer, such as zinc dipping, copper preplating, nickel preplating and the like; putting the aluminium and the aluminium alloy with treated surfaces into plating solution for plating, adding a refining agent, a stabilizing agent and an anti-hydrogen agent in the electroplating solution, and adopting direct current for electroplating. The current density is 0.5 to 2A/dm, and the obtained plating layer is even and compact and has smooth surfaces without foaming and shell phenomenon and has good binding force. The method overcomes the defects that the traditional lead electroplating on the surface of aluminium and aluminium alloy needs to plate the metal transitional layer, has trivial steps, rough surface, easy foaming, difficult quality control and poor binding force of plating layer and the like.

The electrolyte solution is used in micro arc oxidizing treatment of aluminum alloy casting in some micro arc apparatus. By means of setting the cylinder inside electrolyte solution compounded with sodium phosphate, sodium silicate, potassium hydroxide and sodium molybdate and applying voltage to the cylinder, one alumina ceramic layer with alumina as main component may be formed on the surface of the aluminum alloy cylinder. The formed alumina ceramic layer has aluminum atom originating from the aluminum alloy and oxygen ion from the electrolyte solution, and the process produces no pollution and has high combination strength between the ceramic layer and the base. The ceramic layer has blind micropores distributed homogeneously, and under friction reducing condition, one continuous oil film is formed on the surface to raise the wear resistance of the surface of the cylinder.

The invention provides a grain refinement machining process of a hard aluminium alloy cast ingot, belonging to the technical field of aluminum alloy machining. The grain refinement machining process comprises the following steps of: blending, smelting, stirring, temperature measuring, sampling, component and temperature regulating, turning down, refining (namely primary purifying), standing, online adding of Al-Ti-B wires, online degassing and deslagging (namely secondary purifying), two-stage filtering, hot-top casting at a same level, and homogenizing of the cast ingot, thus completing grain refinement machining of the hard aluminium alloy cast ingot. The hard aluminium alloy cast ingot machined by the machining process has a better heat deformation property, is high in strength through online quenching during extruding, has better welding and corrosion resistance properties and a certain stress corrosion resistance property, and especially has a high shock absorption capacity as well as a good folding resistance property.

The invention provides an Al-Fe-Os-RE aluminium alloy and a preparation method thereof. The preparation method comprises the following steps of: a) casting an aluminium alloy cast ingot; b) homogenizing the aluminium alloy cast ingot and rolling the homogenized aluminium alloy cast ingot to obtain an aluminium alloy rod material; c) intermittently annealing the aluminium alloy rod material obtained in the step b); and d) aging the aluminium alloy rod material obtained in the step c), thus obtaining the aluminium alloy. The invention also provides a power cable. The aluminium alloy has better overall performances by selecting and controlling the added elements and adopting a reasonable preparation process.

The invention relates to an aluminium alloy with high strength and excellent cutting property and a preparation method thereof, and belongs to the technical field of alloys. The product, namely the aluminium alloy with high strength and excellent cutting property, is obtained through slagging-off, alloy preparing, refining, standing, casting, homogenizing, extruding and carrying out artificial aging after melting an aluminium ingot. According to the invention, by means of proportioning alloy composition, controlling a production process and the like, the alloy bar can achieve the tensile strength of greater than or equal to 280MPa, the regulated non-proportional extension strength of greater than or equal to 250MPa, the elongation A of greater than or equal to 10 percent and the HV hardness of 98 to 108; the cutting property of the material is greatly improved.

The invention discloses a low porosity closed cell foam aluminum alloy preparation method comprising the steps of, (1) heating aluminium alloy to melting, (2) charging 0.5-5% thickener, stirring the aluminium alloy to increase thickness, (3) charging foaming agent 0.2-5.0 wt% of aluminium alloy, stirring homogeneously, (4) stirring 10s-180s again, (5) extracting the stirring paddle, (6) subjecting the thermal insulated foam aluminium alloy flux to simultaneous cooling. The invention also discloses a closed cell foam aluminium alloy with low factor of porosity.

The invention provides an Al-Fe-Rh-RE aluminium alloy and a preparation method thereof. The preparation method comprises the following steps of: a) casting an aluminium alloy cast ingot; b) homogenizing the aluminium alloy cast ingot and rolling the homogenized aluminium alloy cast ingot to obtain an aluminium alloy rod material; c) intermittently annealing the aluminium alloy rod material obtained in the step b); and d) aging the aluminium alloy rod material obtained in the step c), thus obtaining the aluminium alloy. The invention also provides a power cable. The aluminium alloy has better overall performances by selecting and controlling the added elements and adopting a reasonable preparation process.

The invention relates to a production technique for carrying out golden and anodization on the surface of aluminium alloy. The production technique comprises the following steps of: carrying out decontamination and oil removal treatment for 3 to 5 minutes on hung aluminium alloy sections in bath liquid of a bright cleaning bath, washing for 2 to 3 times after finishing treatment, and then entering next procedure; carrying out anodization treatment on the sections treated by the former procedure in an anodizing bath, washing for 2 to 3 times and washing with pure water for 1 time after finishing treatment, and then entering next procedure; putting the anodized sections into a golden dyeing bath for dyeing, washing for 2 to 3 times after finishing treatment, and then entering next procedure; and finally closing the dyed sections in a closing bath with medium temperature or normal temperature, washing for 1 time after finishing treatment, and then entering next procedure, namely unloading and packaging. The production technique firstly discloses an improved method for introducing the bright cleaning bath in the pretreatment process and adding an additive with organic function in inorganic dye of the dyeing bath, and leads the technique to have the advantages of an organic dye material dyeing method and an inorganic dye material dyeing method simultaneously.