47 results about "Pressure die casting" patented technology

The utility model relates to the technical field of automobile parts, and provides a lightweight fender bracket based on high-pressure die casting, which comprises a fender bracket body arranged between a fender and a battery box frame, the fender support body comprises a first installation part used for being connected with a storage battery box frame, two second installation parts arranged on the two sides of the first installation part correspondingly and used for being connected with a fender, and two first connection parts arranged on the two sides of the first installation part correspondingly and connected with the second installation parts on the two sides. The distance between the first mounting part and the fender is larger than that between the second mounting part and the fender, the middle of the second mounting part is arranged in an arched mode in the direction away from the fender, and the first mounting part, the second mounting part and the first connecting part are integrally formed through high-vacuum die casting. The fender bracket has the beneficial effect that the weight of the fender bracket is reduced.

The utility model discloses an anti-dazzle hoisting type lamp with a high heat dissipation structure, a lamp main body comprises a shell, a heat dissipation assembly, a light source assembly and a reflecting plate, a light groove with a downward opening and a heat dissipation groove with an upward opening are formed, the light groove comprises a light shield and a mounting plate, the light shield is formed by integrally bending the shell, and the light source assembly is arranged on the mounting plate. The reflecting plate is fixed to the inner side of the light shield, the shell, the first side plate and the second side plate are formed in a die-casting mode, the heat dissipation assembly comprises fins and heat pipes, the heat dissipation effect is good through the structure that die castings are combined with the fins and the heat pipes, meanwhile, the overall structural weight of the lamp body is reduced, personnel installation is convenient, and the heat dissipation effect is good. The light shield is directly formed by the shell in a die-casting mode, the integrally-formed light shield plays a role in preventing dazzle light and is small in size, and compared with a traditional lamp additionally provided with the light shield, the light shield is small in structure, so that the light shield is lighter, small in installation occupied area and more convenient to install.

The application relates to a rotor forming technical field, in particular to a processing device for helicopter rotor forming, which comprises a lower mold core and a matched upper mold core, a gate is arranged on the upper mold core, and a flow circulation mechanism is arranged on the lower mold core and the upper mold core. The processing device for helicopter rotor forming is characterized in that high-pressure inert gas is controlled to enter a forming cavity through a gas valve, pressure is synchronously applied in a casting process, and the compactness of a casting is improved; a right-side reserved cavity serves as a metal liquid buffer area, cooperates with inert gas pressure adjustment, ensures that metal liquid uniformly fills a complex cavity, and reduces problems such as cold separation or insufficient filling; a sealing mechanism maintains a high-temperature and high-pressure environment, so that casting and HIP are completed in the same mold cavity, secondary oxidation or cooling defects caused by traditional step-by-step processes are avoided, and a production cycle is shortened. Therefore, the design of the integrated pressure die casting and HIP and inert gas dynamic pressure realizes batch production of high-precision complex connecting rods.

This invention relates to an aluminum die-cast oil filter assembly, comprising an aluminum body formed by high-pressure die casting, a filter element mounting seat for installing a filter element, and a radiator mounting position for installing a radiator. A filter element is inserted into the filter element mounting seat, and a radiator is installed in the radiator mounting position. The radiator mounting position is characterized by having a radiator oil inlet, a radiator oil outlet, a radiator coolant inlet, and a radiator coolant outlet. The radiator oil inlet and outlet are connected by a first pipe. The body has an open slot on one side of the radiator mounting position that is not connected to the radiator oil inlet, outlet, coolant inlet, or outlet. The open slot has a reinforcing structure connected to the first pipe. The advantages of this invention are: the open slot reduces porosity during die casting, saves material, and provides good oil filtration and heat dissipation.

The invention discloses a special ultrahigh corrosion-resistant high-pressure cast aluminum alloy for marine equipment and a preparation process of the special ultrahigh corrosion-resistant high-pressure cast aluminum alloy. The aluminum alloy is designed by taking aluminum as a matrix and synergistically adding silicon, magnesium, various transition elements and rare earth elements of cerium and lanthanum in a specific proportion. The preparation process sequentially comprises the steps of smelting and refining, high-pressure die casting, heat treatment and surface treatment. Through the unique component design and the systematic combination of the whole-process technology, the high-pressure casting manufacturability of the alloy is kept, meanwhile, the marine corrosion resistance and the mechanical property are comprehensively improved, and the alloy is suitable for structural parts such as marine ship engine parts in the severe environment.

The quantitative liquid filling equipment comprises an upper supporting frame, an upper transmission device is fixed to the middle of the top face of a top plate of the upper supporting frame, a supporting connecting sleeve is fixed to one end of the bottom of the upper supporting frame, and a horizontal connecting fixing plate is fixed to the bottom end of the supporting connecting sleeve; a storage barrel is fixed to the bottom face of the horizontal connecting fixing plate, a vertical through hole is formed in the middle of the bottom of the storage barrel, the inner side wall of the bottom end of the vertical through hole is a conical wall face with the top small in inner diameter and the bottom large in inner diameter, a vertical lifting rod is inserted into the storage barrel in a sleeved mode, and a blocking block part is fixed or formed at the bottom end of the vertical lifting rod. The lower part of the blocking block part extends out of the bottom surface of the storage barrel body, the top surface of the blocking block part is a conical wall surface which is pressed against the inner side wall of the bottom end of the vertical through hole, and the blocking block part and the vertical through hole are matched; according to the pouring device, magnesium alloy melt can be quantitatively poured and can be moved to a feeding opening of a mold for material pouring, the pouring amount is accurate, quantitative pouring is guaranteed, and waste of raw materials is reduced.

The application relates to a main body of an aluminum die-casting machine oil filter, which comprises an aluminum main body formed by high-pressure die casting, is provided with a filter element mounting seat for mounting a filter element and a radiator mounting position for mounting a radiator, and is provided with a radiator oil inlet, a radiator oil outlet, a radiator coolant inlet and a radiator coolant outlet in the radiator mounting position; the radiator oil inlet and the radiator oil outlet are communicated through a first pipeline; and an opening groove, which is not communicated with the radiator oil inlet, the radiator oil outlet, the radiator coolant inlet and the radiator coolant outlet, is arranged on one side of the main body in the radiator mounting position; and a reinforcing structure connected with the first pipeline is arranged in the opening groove. The main body is provided with the opening groove, gas holes formed in the die-casting process are reduced, material is saved, the oil filtering effect is good, and heat dissipation is achieved.

The utility model belongs to the technical field of die casting quality inspection, and discloses a suspension bracket device for assisting die casting quality inspection, which comprises a support vertical rod, a counterweight seat is mounted at the bottom end of the support vertical rod, a power motor I is fixedly connected to the inner surface of the counterweight seat, a worm is fixedly connected to the output end of the power motor I, and a worm is fixedly connected to the output end of the worm. A worm gear is connected to the outer surface of the worm in a meshed mode, a rotating shaft is fixedly connected to the inner surface of the worm gear in a sleeved mode, and the top end of the rotating shaft penetrates through the balance weight base and is fixedly connected with the supporting vertical rod. According to the device, the degree of freedom of lifting, horizontal moving and rotating of the hanging frame is given to the device, meanwhile, under the cooperation effect of the clamping assembly, die castings can be automatically and accurately carried to a quality inspection table from a cleaning machine and then carried to the position above a packaging box, manual intervention is greatly reduced, and the production efficiency is remarkably improved.

The present invention relates to hot work tool steel for high-pressure die casting, and contains the following main components (weight %): C 0.28-0.39, Si 0.05-0.35, Mn 0.1-0.8, Cr 5.4-6.0, Ni ≤0.4, Mo 1.8-2.5, V 0.6-1.1, with the remainder being optional components, Fe and impurities.

The application belongs to the technical field of insulator production, and particularly relates to a synthetic silicon rubber insulator and a processing method thereof. In view of the problem that too much excess silicon rubber mud is extruded on a table top in the process of manufacturing a silicon rubber insulator, resulting in serious waste of the mud and inconvenience of recycling, the following scheme is proposed, which comprises a core rod, the two ends of the core rod are reserved with end column with a diameter larger than the middle diameter, and the middle of the core rod is wrapped with a plurality of outer layer insulating strings connected in a disc shape, and the outer layer insulating strings are pressure die cast from synthetic silicon rubber material. The application can not only reserve a large space when the core rod wrapped with raw materials is placed and the synthetic silicon rubber insulator body is taken, so as to facilitate operation, but also can be supplemented by the operation of a supplementing barrel for supplementing if there is a gap in the mold cavity in the first round of pressure die casting, so as to ensure that the mold cavity is completely filled, so that the amount of silicon rubber mud extruded outside in the traditional way can be greatly reduced, and waste can be reduced.

Provided is a manufacturing method of a faucet, including: (1) fabricating a liner with a cavity; (2) injecting a liner filler into the cavity of the liner, and allowing forming of the liner filler in the cavity; and (3) placing the liner injected with the liner filler in a mold, conducting high-pressure die casting, cooling for solidification, and removing the liner filler from the cavity to produce the faucet. The liner filler is one or more of a resin, a silica gel, a foam material, a resin sand, a steel ball, a cement, a wood shaving, a flour, a wax, an ice, and a dry ice. A raw material for fabricating the liner is at least one of a stainless steel, a titanium metal, copper, and aluminum. The method is simple and features low difficulty in industrial production. The faucets have a smooth liner, regular appearance, and excellent consistency.

This invention relates to the field of alloy materials and surface treatment technology, and discloses a high-quality anodized die-cast aluminum alloy formula. The high-quality anodized die-cast aluminum alloy formula comprises, by mass percentage: silicon ≤0.3%, iron ≤0.15%, magnesium 0.3%-0.8%, manganese 0.2%-0.5%, copper 0.01%-0.05%, strontium-titanium composite grain refiner 0.05%-0.15%, with the balance being aluminum and impurities; the mass ratio of strontium to titanium is 1:(2-5); it is obtained through melting, argon refining, low-pressure die casting, pretreatment, and anodizing. This method reduces the silicon-iron content, adds a strontium-titanium composite grain refiner to refine the grains, eliminates impurity phases, and solves the problems of color difference, pinholes, and film peeling after anodizing, obtaining a uniform and dense film and improving gloss.

The application provides an aluminum-scandium alloy target blank and a preparation method thereof, and belongs to the technical field of aluminum-scandium alloy preparation. The preparation raw material corresponding to the element composition of the aluminum-scandium alloy target blank is melted to obtain an alloy melt; the alloy melt is pressed into a mold to perform rapid filling; the filling speed is 0.1-20 m / s, and the filling time is 0.01-2 s; after the filling is completed, pressure maintaining is performed, the alloy melt in the mold rapidly solidifies to obtain the aluminum-scandium alloy target blank; and the pressure maintaining pressure is 10-200 MPa. The application increases the flowability of the aluminum-scandium alloy melt through rapid filling, guarantees the integrity of the cast blank, effectively refines the grains through high-pressure die casting, improves the density, and obtains an aluminum-scandium target blank which is uniform in composition, compact in structure, and excellent in processing performance. The results of the examples show that the relative density of the aluminum-scandium target blank prepared by the application is 95.5-99.9%, and the oxygen content is 60-300 ppm.

This invention discloses a quantitative molten metal feeding device for a die-casting machine that offers stable flow and easy maintenance. The device includes a slurry tank, a valve core module, a cylinder, a connecting shaft, a plunger rod, and a probe module. The valve core module comprises a guide tube, a small end cap, and a large end cap. The guide tube is assembled inside the large end cap. The small end cap and guide tube together can move vertically within the central through-hole of the large end cap. Through-holes A and B are respectively provided on the sides of the guide tube and the large end cap. When the valve core module extends from the bottom of the large end cap, the molten metal sequentially enters the slurry tank through the valve port at the bottom of the guide tube, through-hole A, and through-hole B. When the valve core module retracts from the bottom of the large end cap, the molten metal is sealed and stored inside the slurry tank. This invention achieves stable quantitative molten metal feeding and allows for faster recovery after power outages. The molten metal valve port has an anti-collision structure, ensuring that even if the device experiences a violent collision with the die-casting machine or the ground during operation, the high-temperature molten metal inside will not leak, making it safer to use.

This application relates to the field of casting technology, and in particular to a negative pressure die casting device for exhaust manifolds, comprising a work frame, a housing, a sand mold, and a casting block. The housing is connected to the work frame, and both the sand mold and the casting block are disposed within the housing. The sand mold is slidably connected to the work frame in a vertical direction. The casting block has pores and is covered with a thermoplastic film. The sand mold and the casting block are spaced apart in a vertical direction, forming a cavity for the exhaust manifold casting within the housing. An injection pipe is disposed on the housing and communicates with the cavity. A first vacuum assembly is connected to the casting block, and a second vacuum assembly is connected to the sand mold. The casting block is hollow. The first vacuum assembly includes an air bladder and an air pump, both of which are disposed within the casting block. The air pump is connected to the air bladder. This application has the effect of improving the casting quality of exhaust manifolds.

The utility model relates to the technical field of vehicle bodies, and provides a vehicle body rear structure and a vehicle. The vehicle body rear structure comprises a rear wheel cover inner plate, a rear floor longitudinal beam and a rear shock absorption tower, the rear shock absorption tower is integrally formed in a die-casting mode, and the lower portion of the rear shock absorption tower is connected to one side of the rear floor longitudinal beam and extends towards the lower portion of the rear floor longitudinal beam. According to the vehicle body rear structure, the rigidity of the rear shock absorption tower and the non-deformability and rigidity of the vehicle body rear part can be improved, the performance of the vehicle body rear structure is improved, meanwhile, the production efficiency is improved, the production cost is reduced, and the market competitiveness of the whole vehicle can be improved.

This invention provides a low-expansion die-cast aluminum alloy with the following composition and component content by mass percentage: Zn: 40-45%; Mg: 15-20%; Y: 0-0.5%; balance Al. This invention also discloses the smelting and preparation process, vibration casting process, and high-pressure die-casting process of the above-mentioned aluminum alloy. The specific steps are: high-temperature melting of the aluminum alloy, melt modification treatment, refining and slag removal, mechanical vibration treatment, and high-pressure die casting. The preparation process of the eutectic Al-Zn-Mg die-cast aluminum alloy of this invention is simple and easy to implement, the amount of alloying elements added is easy to control, the comprehensive performance effect is significant, the industrial production cost is low, and it has wide applicability. This invention uses element modification and mechanical vibration to refine the α-Al phase, achieving multi-dimensional optimization of the alloy's thermal expansion coefficient, thermal conductivity, and flow filling properties, obtaining a low-expansion eutectic Al-Zn-Mg die-cast aluminum alloy for electronic packaging materials.

The application discloses a kind of high thermal conductivity high strength aluminum alloy material and preparation method thereof, it includes the following steps: S1: weighing according to percentage by weight: La, Sc, Zr, Si, Mg, Zn, Cu, Ti, B, Sr, Al, Fe, Mn;S2: Al, La, Si is melted at 720~750 DEG C, and first melt is obtained;S3: add Sc, Zr, Ti, B intermediate alloy, and second melt is obtained;S4: cooling to 700~710 DEG C, and Mg, Zn, Cu are stirred evenly, and third melt is obtained;S5: by gas dispersion stirring, reinforcing phase is added, and simultaneously ultrasonic auxiliary treatment is handled, and composite melt is obtained;S6: vacuum high-pressure die casting is formed, and die casting is obtained;S7: pre-aging and main aging treatment are sequentially carried out, and it is obtained immediately.The application realizes the high thermal conductivity and high strength of aluminum alloy, and can meet the long-term durability and stability requirements of high-end fields such as 5G communication, new energy automobile and the like to heat dissipation structural member.

The application provides a high-pressure die casting press, which comprises a die unit; one end of an oil cylinder is arranged at one end of the die unit to drive the die unit to move towards or away from a die casting die, and the oil cylinder is electrically connected to a hydraulic system; a shot system is connected to the other end of the die unit to press high-pressure semi-liquid metal; a main winding frame is provided with a space for mounting the oil cylinder, the shot system and the die unit; and a periphery of the main winding frame is wound with a steel wire to pre-tighten the main winding frame and make it in a compressive stress state. The application is convenient for flexible design of a column structure and a cross section, can achieve a frame support with a larger tonnage, and can meet the production requirements of super-large die castings; the oil cylinder is wound with the steel wire to offset the deformation of a movable die plate, a fixed die plate and a die during a forming and pressurizing process, reduce the size of the oil cylinder, and enhance the safety factor of the oil cylinder; an electrostatic spraying system is configured to meet the trace spraying requirements of large-size die castings; and a moving die changing platform is configured to solve the problem of difficult die changing of super-large molds.

The invention relates to the technical field of metal casting, and discloses a balanced runner and injection speed control method of a multi-cavity mold, which is used for solving the problem of insufficient self-adaptive control precision of real-time injection speed in a traditional method. The method comprises the steps that firstly, after a die casting machine is started, parameters such as melt pressure and temperature are collected and transmitted to a control system, the parameters are aligned and compared with a preset balance runner model to complete difference analysis and unbalanced positioning, and then an injection speed adjusting instruction is generated and issued to an injection mechanism to be executed; the speed curve of the injection plunger is switched between a low-speed stage and a high-speed stage according to conditions; the control system compares feedback data with a target equilibrium state in an observation window, completes convergence, continuity and execution consistency judgment, selectively iterates according to residual errors until a period is finished, forms a period file and updates cross-period parameters and versions; the method is suitable for high-pressure die casting of aluminum alloy steering knuckles and ensures process stability and adaptability.

The utility model relates to pressure die casting machine technical field especially relates to a kind of waste gas treatment equipment for pressure die casting machine, including the spray tower connected with processing box by pipeline, the processing mechanism of multiple purification waste gas is provided in the processing box, the spray cleaning mechanism of residual liquid cleaning is provided in the spray tower. The utility model is processed by setting processing mechanism, in the process of treating waste gas, the particulate matter in waste gas is filtered and handled using multiple filtering mode, and vibration can also be carried out to filter structure, and the adhered particulate matter is shaken off, to avoid frequently replacing filter screen to increase waste gas treatment cost, also can improve the efficiency of waste gas treatment, by setting spray cleaning mechanism, after waste gas is preliminarily treated, waste gas is further treated by the way of spraying, improve the treatment effect of waste gas, and after spray treatment is completed, residual spray liquid can also be removed, to avoid the influence caused by residual spray liquid to waste gas treatment.

The application belongs to the technical field of alloy preparation, and more particularly relates to a modular semi-solid forming method and system of a particle-reinforced magnesium-based composite material. By modular mixing a liquid magnesium alloy melt and reinforcing body particles, the particles are mixed in a first module mixing chamber at a first rotating speed for a first time at a temperature higher than the liquidus temperature of the magnesium alloy, then are transported to a preheated second module mixing chamber to be mixed at a second rotating speed for a second time, and are cooled to a temperature range between the liquidus and solidus of the magnesium alloy during the mixing, and then are transported to a preheated third module mixing chamber to be mixed at a third rotating speed for a third time. Through the collaborative mixing between the module mixing chambers, the reinforcing body particles can be uniformly dispersed. Finally, the semi-solid composite slurry prepared by mixing is pressure die cast, and a high-performance particle-reinforced magnesium-based composite material is obtained. The semi-solid forming process has the advantages of simple preparation process, short production process, and excellent mechanical properties of the product.

The application relates to a production method of a two-split spacer frame, which is made of aluminum alloy, and the specific components (in percentage by weight) are as follows: Si: 10-13, Fe: 0.5-2.0, Cu: 1.0-2.5, Mg: 0.2-0.4, Mn: 0.05-0.1, Ti: 0.01-0.03, Ni: 0.01-0.02, Ba: 0.005-0.01, Cr: 0.01-0.1, B<=0.001, P<=0.001, S<=0.001; hard phase: 0.001-0.005; and the rest is Al; the production steps of the two-split spacer frame include aluminum liquid smelting, metal mold preparation, high-pressure die casting, mold opening, cleaning and heat treatment; through reasonable design of aluminum alloy components of the two-split spacer frame, high-pressure die casting forming and stress relief annealing process are adopted, the produced two-split spacer frame has the characteristics of compact structure, high yield, compact structure and high tensile strength.

The invention relates to a venting device (01) for venting a casting chamber (11) by means of an evacuation device (12), wherein the venting device (01) has a base body (02) having an outflow channel (03) which is formed within the base body (02) and having an insertion portion (04) for being connected to the casting chamber (11) in a detachable and fluid-conducting manner and having a connection portion (05) for being connected to the evacuation device (12) in a detachable and fluid-conducting manner, wherein air can flow out through the outflow channel (03) when evacuating the casting chamber (11) and a filter unit (06) is disposed in the outflow channel (03). Furthermore, the invention relates to a casting device (10) comprising at least one casting chamber (11) having a casting chamber wall (13). Furthermore, the invention relates to a casting device (10) comprising at least one casting chamber (11) having a casting chamber wall (13), and to a vacuum-assisted pressure die casting system (100) having a casting device (10) and to a method for operating a vacuum-assisted pressure die casting system (100).

The application relates to the technical field of aluminum alloy, and discloses a heat-treatment-free aluminum alloy and a preparation method thereof, which comprises the following steps: preheating industrial pure aluminum, pure magnesium and various required intermediate alloys under the environment of 200-220 DEG C; calculating and weighing the above materials according to the mass percentage of the chemical composition of the alloy; adding the first material into a smelting furnace and carrying out first alloying treatment and first refining slag removal to obtain a first alloy melt; adding the second material into the first alloy melt to carry out second alloying treatment and second refining slag removal, thereby obtaining a second alloy melt; adding the third material into the second alloy melt to carry out third alloying treatment and third refining slag removal, thereby obtaining a third alloy melt; introducing argon into the third alloy melt; smelting after standing; obtaining a fourth alloy melt; and carrying out high-pressure die casting on the fourth alloy melt to obtain the heat-treatment-free aluminum alloy. Therefore, the heat-treatment-free aluminum alloy has the advantages of high tensile strength, yield strength and elongation after fracture, and good fluidity.

The invention discloses an intermediate alloy for controlling microscopic residual stress of a large casting and a preparation method. The intermediate alloy comprises the nominal components of 0.6%-8% of Ti, 0.2%-3% of B and the balance Al and impurities. Wherein the mass ratio of Ti to B is (2-2.2): 1. The average size of TiB2 particles of the prepared intermediate alloy is 200-400 nm, and the particle size distribution is more uniform; the TiB2 particles are approximately equiaxed, so that stress concentration can be effectively avoided. The Brownian movement of the intermediate alloy added into an aluminum melt is violent, the particle dispersion effect is good, serious specific gravity segregation does not exist, and the regulation and control effect of TiB2 particles on the microcosmic residual stress can be effectively exerted. The intermediate alloy can be applied to a plurality of actual scenes such as high-pressure die casting size precision control, extrusion casting part hot crack control, low-pressure casting part surface defect and feeding control and the like, the casting production efficiency is improved, and the production cost is reduced.

The application discloses a method for manufacturing an iron-based alloy ceramic composite wear-resistant material by a high-temperature and high-pressure die casting method, and comprises the following steps: S1, preparing a ceramic preform; S2, heating iron-based alloy liquid to 1620 DEG C, and pressing the iron-based alloy liquid into the ceramic preform by a press machine, and keeping the pressure for 2 minutes; then, cooling and forming, and taking out after being kept in a holding furnace for 12-24 hours, and obtaining the composite wear-resistant material after being cooled to normal temperature; and S3, performing heat treatment on the material obtained in the step S2. The application can produce a new composite material, i.e., an iron-based ceramic composite wear-resistant material, which simultaneously considers various performances of the wear-resistant material and greatly improves the comprehensive performance of the product, smelts higher than a traditional smelting temperature, and uses liquid lead as a coolant to cooperate with a composite material mold, so that the cooling effect meets the process requirement.

A die-casting system comprises a first mold having a first cavity-forming surface, a second mold having a second cavity-forming surface configured to move along a first axis with respect to the first mold, and one or more sliding molds, each having a third cavity-forming surface configured to move with and engage in relation to the first and second molds. The die-casting system further comprises one or more auxiliary mold elements detachably coupled to the second mold, each having a fourth cavity-forming surface. The one or more auxiliary mold elements each extend from the second mold in a direction perpendicular to the first axis.Furthermore, the die-casting system includes a mold cavity to form a metal part between the first, second, third and fourth cavity-forming surfaces.

The invention relates to the field of metallurgy, namely, to aluminium-based alloys, and can be used in the production of complex thin-walled castings by casting into a metal mould, mainly by high-pressure die casting. The casting aluminium-based alloy contains, wt. %: calcium 2.0-5.2%; silicon 0.05-0.8%; iron 0.05-1.0%; zinc 0.01-5.0%; magnesium 0.01-2.0%; optionally, at least one alloying element from the group: copper 0.01-1.4%; manganese 0.01-1.5%; chromium 0.01-0.2%; titanium 0.01-0.2%; zirconium 0.01-0.2%, aluminium and unavoidable impurities. This invention is technically aimed at providing high strength properties while maintaining plasticity, processability in casting and high corrosion resistance.

The application belongs to the technical field of aluminum alloy preparation and relates to an integrated die-casting method and system of a weldable and recyclable Al-Cu series high-strength and high-toughness die-cast aluminum alloy, which comprises the following steps: preparing a die-cast aluminum alloy liquid; performing integrated high-pressure die casting by using the die-cast aluminum alloy liquid; performing slow injection at a first speed, transition injection at a second speed, and then accelerating to a third speed for filling injection until the pressure in a mold cavity rises to a pressurization trigger pressure and then performing pressurization treatment; and performing post-treatment after the high-pressure die casting is completed to obtain an Al-Cu series high-strength and high-toughness die-cast aluminum alloy casting. The application can fundamentally improve the flowability and oxidation problem of the Al-Cu alloy, and efficiently and stably produce large die-cast structural parts with high performance and high reliability in a heat treatment-free state.