120 results about "Squeeze casting" patented technology

The invention provides a casting parameter optimization method and system based on a neural network and a multi-target GA algorithm, and relates to the field of squeeze casting process parameter optimization design, a squeeze casting process data set and an initial LSTM neural network are constructed, and the trained LSTM neural network is obtained according to the squeeze casting process data set; a solution set randomly generated in the value range of the casting process parameters in the squeeze casting process data set forms an initial population; obtaining a plurality of target performance indexes and defect indexes corresponding to each individual in the initial population, and obtaining a fitness function and fitness corresponding to each individual according to the plurality of target performance indexes and defect indexes; selecting parent individuals in the initial population according to a preset fitness threshold to obtain a child population; and the initial population and the offspring population are subjected to Pareto sorting, and when a target population meets a preset performance index condition, the target population serves as an optimal extrusion casting process parameter to be output. According to the method and the device, the robustness and the precision of process parameter optimization can be improved.

The invention provides a casting and forging composite forming method and die for an aluminum alloy structural part. A certain downward pressing amount is reserved for a male die; the cavity is filled with the metal melt at a certain speed under the pushing of the injection punch; increasing the pressure of the punch and maintaining the pressure (indirect extrusion casting); the pressurizing pin is started to carry out local pressurizing feeding; and the male die moves downwards by a certain distance, high pressure is applied, and closed die forging is conducted on the casting in the semi-solidified state. The mold structure comprises a shell part, a forming part, a flash storage and exhaust part, a pouring system, a temperature adjusting and monitoring system and a demolding system. The extrusion casting process and the closed die forging process are integrated in one set of die and are achieved through the extrusion casting machine, the performance of a final product is better than that of an extrusion casting method, the forming process is easier to achieve compared with forging, meanwhile, the production cost is lower, and the method is particularly suitable for forming machining of high-performance safety parts, structural parts and complex parts.

The invention relates to the technical field of extrusion casting, and discloses an aluminum alloy hub extrusion casting forming die which comprises a rack assembly, the rack assembly comprises a main rack, a barrel frame, a side pressing base, a lower die base and a fertilizer box, and the side face of the bottom of the main rack is fixedly connected with the side face of the barrel frame; the side face of the main machine frame is fixedly connected with the side face of the side pressing base, and the side face of the main machine frame is fixedly connected with the side face of the lower die base. According to the aluminum alloy hub extrusion casting device, a second hydraulic rod, a grabbing plate and a rotary disc assembly are arranged, after extrusion casting of an aluminum alloy hub is completed, products can be transported through the rotary disc assembly, automation of the device is achieved, and the labor cost and danger are reduced; high-temperature aluminum alloy liquid is pressed into the die through the pressure of the hydraulic rod, the high-temperature aluminum alloy liquid can be evenly distributed in the die, then redundant gas is exhausted through the gas outlet holes in the upper die, the problem that bubbles are generated in a machined product is solved, and the strength of the product can also be enhanced.

The invention relates to the technical field of extrusion casting molds, and discloses an automobile clutch shell extrusion casting mold which comprises a casting table base, a supporting column is fixedly connected to the top of the casting table base, a top hydraulic machine box is fixedly connected to the top of the supporting column, and a first hydraulic telescopic column is movably connected into the top hydraulic machine box in a sleeved mode. A mold base is arranged at the bottom of the first hydraulic telescopic column, the mold base is movably sleeved with an extrusion cooling table, a cold air conveying channel is formed in the bottom of the mold base, a first fan blade is movably sleeved with the mold base, and a first motor is fixedly connected to the bottom of the first fan blade; low temperature generated by cooling liquid is transmitted to the mold base to cool the mold base, the front ventilation pipeline arranged in the concave water tank in a sleeving mode converts internal airflow into low-temperature airflow through cooling liquid, and the water tank handrail is installed outside the concave water tank to prevent foreign matter from entering the concave water tank to affect the cooling effect of the front ventilation pipeline.

The invention relates to the technical field of extrusion casting, and discloses an extrusion casting device and a casting method.The extrusion casting device comprises a pressing chamber, a punch, an extrusion mechanism and a pressurizing mechanism, the pressing chamber is fixedly connected with a fixed mold plate, a containing cavity used for containing molten metal is formed in the pressing chamber, and a feeding port is formed in the side face of the pressing chamber and connected with a feeding runner; a sealing plate is arranged at the feeding hole and is used for opening or closing the feeding hole; the punch is in sliding fit with the pressure chamber; the extrusion mechanism comprises an extrusion rod, the punch is fixedly connected to the end of the extrusion rod, and the extrusion mechanism drives the extrusion rod to move based on the hydraulic principle so that the punch can push the molten metal in the containing cavity for mold filling. The pressurizing mechanism drives the extrusion rod to move so as to provide pressurizing thrust for the molten metal subjected to mold filling, the mold filling process and the pressurizing process are completed through the two mechanisms correspondingly, hydraulic thrust is reduced, the overall size of the hydraulic cylinder is reduced, meanwhile, actions in one cycle are reduced, and the production efficiency is improved.

The invention provides an interpretable automatic machine learning analysis method for designing extrusion casting process parameters, and belongs to the field of extrusion casting process parameter design. The method comprises the following steps: constructing squeeze casting process data, and then establishing a machine learning prediction model of squeeze casting process parameters based on an automatic machine learning framework; and on the basis, an interpretable artificial intelligence algorithm is used for carrying out interpretable analysis on the extrusion casting process parameter prediction decision. According to the design method, an advanced automatic machine learning framework and an interpretable artificial intelligence algorithm are combined, so that the extrusion casting process parameter design process is more transparent and reliable. Meanwhile, the method is combined with an existing squeeze casting process data set, implicit relations between material components and process parameters are mined through high-order knowledge dimensions of a machine learning algorithm, and a new thought is provided for modeling optimization design of materials and process parameters of the squeeze casting process.

The utility model relates to an extrusion casting device for aluminum magnesium alloy mold filling, and belongs to the technical field of metal casting, the extrusion casting device comprises a male die, an operation table, a female die, a smelting furnace and an injection assembly, a supporting frame is arranged on the operation table, a first hydraulic cylinder is arranged on the supporting frame, and the male die is arranged on a hydraulic rod of the first hydraulic cylinder; a feeding cavity is formed in the operation table, the female die is arranged on the operation table, and a feeding hole is formed in the lower end of the female die. A discharge hole is formed in the lower end of the smelting furnace; the injection assembly is arranged in the feeding cavity. The volume of aluminum-magnesium alloy liquid entering the feeding cavity from the smelting furnace is quantitatively controlled through the injection assembly, the aluminum-magnesium alloy liquid in the feeding cavity is injected into the female die through the feeding hole, the male die is driven by the first hydraulic cylinder to apply pressure to the aluminum-magnesium alloy liquid in the female die, and the aluminum-magnesium alloy liquid is subjected to extrusion casting forming; the problem that net forming is difficult to achieve due to the fact that quantitative pouring of the aluminum-magnesium alloy is difficult is effectively solved.

The invention discloses a large-size aluminum alloy bulkhead component extrusion casting device and a using method thereof, and relates to an aluminum alloy bulkhead component extrusion casting device and a using method thereof. The invention aims to solve the technical problems that the large-wall-thickness area becomes an isolated characteristic relative to a product main body due to the existing technology aiming at the shrinkage cavity defect of the large-wall-thickness area, the flowability of molten metal in the characteristic is poor, and the structural complexity of a component and a mold containing a plurality of large-wall-thickness areas is greatly improved. The multiple extrusion holes communicated with the mold cavity are formed in the movable mold plate and correspond to the positions where the shape follow-up extrusion inserts and the extrusion pins are located and the positions, needing local feeding, of the product with the large wall thickness, the local large-wall-thickness area is locally pressurized while overall loading of a product body is achieved, and the local large-wall-thickness area is pressurized; the whole and local parts of the product are fully fed, and the defects of shrinkage cavities, air holes and the like are remarkably reduced.

The invention discloses a squeeze casting preparation method of a high-toughness and high-plasticity aluminum-copper alloy, and relates to a squeeze casting preparation method of an aluminum alloy. The method aims to solve the technical problems that an existing aluminum alloy casting formed through extrusion casting is uneven in structure and not high in density, and strength and plasticity are difficult to synchronously improve. A proper amount of Zn element and Mg element are added into the aluminum-copper alloy, Mg and Cu are combined to generate an S-Al2CuMg phase, the thermal stability of the S-Al2CuMg phase is superior to that of a theta phase, dislocation movement can be hindered through dispersed distribution of the S phase, and meanwhile the fatigue life of the alloy is prolonged. According to the preparation method, the mass fraction ratio of Zn to Mg is properly reduced, so that the precipitation rate of the S phase is increased, the extrusion casting process is combined for forming, the T6 heat treatment process is carried out after forming, the alloy performance is further strengthened, the high-toughness and high-plasticity aluminum-copper alloy is prepared, and the tensile strength under the room temperature condition ranges from 400 MPa to 460 MPa.

The utility model provides an auxiliary cavity structure of a double-cavity air spring, which comprises an auxiliary cavity body barrel, an auxiliary cavity lower cover, an auxiliary cavity upper cover and a control valve mounting component which are integrally formed through an extrusion casting process. The situations of welding seam cracking and air leakage possibly occurring in the long-time running process of the automobile are avoided, and the situation that materials overflowing from welding damage the bag skin or interfere with other parts is also avoided; moreover, the control valve mounting assembly comprises a control valve upper mounting part and a control valve lower mounting part, and a control valve is arranged between the control valve upper mounting part and the control valve lower mounting part, so that the volume switching of the main chamber and the auxiliary chamber can be realized on the premise of adopting an extrusion casting process; and more choices are provided for a user to select an auxiliary cavity structure of the double-cavity air spring.

The invention relates to the technical field of squeeze casting, in particular to a squeeze casting method for improving the precision of a thin-wall metal part. Comprising the following steps that S1, an aluminum alloy cast ingot is heated to 730-780 DEG C, and alloy liquid is obtained; s2, a mold is preheated, and the alloy liquid is poured into the mold; s3, the die-casting machine is started, and a punch enters the die to extrude the alloy liquid; and S4, a workpiece is obtained through pressure relief and demolding, solution treatment and aging treatment are conducted on the workpiece, and the thin-wall metal part is obtained. Through cooperation of heating of the induction coil and pressurization of the punch, the liquidity of alloy liquid can be guaranteed in the extrusion process so that sufficient feeding can be carried out, internal defects of the thin-wall metal part can be reduced, then grains of the thin-wall metal part are gradually improved and refined through extrusion pressure, the size of the thin-wall metal part is stabilized, and the yield of the thin-wall metal part is improved. And the precision of the thin-wall metal part is improved.

The invention provides an aluminum alloy suitable for extrusion casting and capable of being subjected to vacuum brazing casting, a preparation method of the aluminum alloy and a runner plate preparation method, and relates to the technical field of aluminum alloy casting. The aluminum alloy comprises the following chemical components in percentage by mass: 9-12% of La, 0.1-1.2% of Cu, 1-2% of Zn, 0.2-0.7% of Mg, 0.15-0.4% of Zr, less than or equal to 0.5% of Fe, less than or equal to 0.3% of Si and the balance of Al and inevitable impurities. According to the method, at least one of the technical problems that in the prior art, the heat crack tendency is large, the casting strength is low, and melting collapse is prone to occurring during brazing is solved, Cu is added on the basis of Al-La eutectic alloy to form a specific structure, continuous pressure applying is conducted in cooperation with extrusion casting so that the heat crack tendency can be reduced, and Cu and Zr cooperate to improve the strength of the cast after brazing; and meanwhile, brazing collapse is prevented by ensuring that the alloy solid-phase temperature exceeds 615 DEG C, Zn and Mg gasify and break an Al2O3 film formed on the surface of the aluminum alloy during vacuum brazing, newly exposed base metal is prevented from being oxidized any more, and the finally prepared runner plate is matched with an R744 refrigerant to meet the requirement.

The utility model discloses an extrusion casting machine adopting an electromagnetic pump for low-pressure mold filling. The extrusion casting machine comprises an electromagnetic pump mold filling system, a mold, a sealing and extrusion composite device, a mold locking device, a mold moving device, a guide column, a heat preserving furnace and a lifting mechanism, the lower die is connected with a static template, and the upper die is connected with a movable template; a piston rod of the mold moving device is connected with the movable template; the mold locking device and the sealing and extruding composite oil cylinder are mounted on the movable mold plate; the lower end of the guide pillar is fixed on the static template and penetrates through the center of the mold locking device; the heat preserving furnace is positioned below the static template; the electromagnetic pump mold filling system is fixed on the heat preserving furnace; the electromagnetic pump mold filling system is tightly connected with a lower mold of the mold through a liquid rising pipe; a sealing extrusion composite punch is mounted at the free end of an extrusion piston rod assembly of the sealing extrusion composite oil cylinder; a liquid inlet of the lower mold is communicated with a liquid outlet of the heat preservation furnace through a liquid rising pipe and an electromagnetic pump mold filling system in sequence; the heat preservation furnace comprises a soup adding chamber far away from the liquid outlet, and the soup adding chamber communicates with the liquid outlet through a communicating vessel.

A mandrel assembly (100) for net-shape casting of an undercut finocyl grain (133) with aft-end counterbore (140) in a solid propellant rocket case (101) comprising a core (105) capable of forming central cylindrical cavities in the grain and a plurality of fins (106) capable of forming a plurality of forward-swept longitudinal cavities circular patterned around the core. The method of assembling and disassembling the mandrel (100) comprises the acts of hanging the plurality of fins (106) from the core (105) using a fin hanger (107) with a plurality of long and flexible fin cables (108), hoisting the mandrel assembly (100) over the case aft-end aperture (104), bundling the fins (106) and lowering the mandrel assembly (100) inside the case (101), fastening of all the fins (106) to the core (105) and the core (105) to the case (101), inverting the total assembly, casting propellant slurry through case fore-end aperture (103), curing the propellant, inverting the total assembly back, removing core (105) first, assembling fin decoring tool (134) and removing fins (106) one by one, to obtain net-shape cast undercut finocyl grain (133) with aft-end counterbore (140) without employing squeeze casting or propellant machining.

The invention relates to the field of aluminum alloy materials, provides a manufacturing method of a high-strength thin-wall aluminum alloy extrusion casting part, and aims at solving the problems that an existing aluminum alloy extrusion casting part is insufficient in strength and large in heat treatment deformation. According to the method, an Al-Si-Mg-Cu-Zn series casting alloy with a specific component proportion is adopted, an organization structure containing 1.0-3.5 vol% of Al5Mg8Si6Cu2 strengthening phase is formed through the steps of an optimized extrusion casting process, solution treatment, pre-cooling treatment, isothermal quenching and the like, the strengthening phase forms a semi-coherent interface with a matrix in the precipitation process, and the mechanical property of a casting is effectively improved. According to the casting manufactured through the method, the tensile strength is larger than or equal to 368 MPa, the yield strength is larger than or equal to 316 MPa, the flatness deviation is 0.1-0.25 mm / 100 mm, and the method is suitable for manufacturing thin-wall structural parts with the high requirements for high strength and high dimensional precision and has wide engineering application prospects.

The invention discloses extrusion casting equipment for aluminum magnesium alloy mold filling, and relates to the technical field of die casting equipment. The mold comprises a base, a supporting shell is installed at the top of the base, an adjusting shell is arranged in the supporting shell, one side of the adjusting shell communicates with a bottom mold, and a top mold is arranged on one side of the bottom mold; an adjusting assembly is arranged on one side of the base and comprises a feeding pipe communicating with one side of the adjusting shell. Through a first adjusting plug, a second adjusting plug and a liquid injection groove in the adjusting assembly, accurate control over the melt injection amount is achieved, a bottom mold and a top mold are preheated in advance through a preheating disc and a heater in the preheating assembly, and the problems that due to the low mold temperature, the melt surface layer is rapidly solidified, and cold shut and shrinkage are generated are effectively solved; an ejector pin, an adjusting plate and an adjusting shaft in the ejection assembly are matched with a rotating structure driven by a servo motor, automatic demolding is achieved, and the finished product quality of the aluminum magnesium alloy casting is improved.

The utility model discloses an extrusion casting die which comprises a fixed die core and a movable die core, the fixed die core and the movable die core are closed to form a pouring gate, a sub-runner and a casting cavity, a sliding block is arranged on one side of the fixed die core and one side of the movable die core in a sliding mode, a sliding block insert pin is fixedly arranged on the sliding block, and the sliding block insert pin extends into the casting cavity. The fixed mold core and the movable mold core are each provided with an alignment structure, a plurality of extrusion pins are inserted into the movable mold core, and the tail ends of the extrusion pins extend into the casting cavity; multi-cavity efficient production is achieved through shunting transverse typesetting, the casting quality and the demolding reliability are remarkably improved, the problems of air holes, shrinkage cavities, metal adhesion and the like in the prior art are solved, and high practicability and popularization value are achieved.

The invention discloses a preparation method for improving the micro-area mechanical property of a metal-based composite material, and belongs to the technical field of metal alloy composites.The preparation method comprises the steps that two-dimensional or three-dimensional fiber woven bodies are prepared and placed in a clamp after being stacked, and PyC, Si C, BN and other interfaces are deposited on the surfaces of fiber sheet layers through a chemical vapor deposition method. Soaking the pretreated fiber sheet in nickel nitrate solutions with different concentrations, drying, and putting into a CVD (Chemical Vapor Deposition) furnace, so that the silicon carbide nanowire is grown on the fiber surface, and a multi-layer interface is deposited; and then, an extrusion casting method is adopted for combining the fiber prefabricated body and metal alloy, and the metal-based composite material which is excellent in performance and uniform in structure is prepared through specific process steps. The method is combined with a preparation method of a ceramic-based composite material, so that the mechanical property of the material is greatly improved.

The application discloses an extrusion casting device for aluminum matrix composite material forming, which comprises a base, a conveying mechanism for conveying molten aluminum is installed outside the base, a smelting furnace mechanism for smelting aluminum matrix composite material raw materials is arranged outside the base, a mold mechanism is arranged outside the connecting plate, and a pneumatic mechanism is installed outside the base; through cooperation of an air extraction pump, a connecting valve, an air inlet groove and other components, preheating, impurity cleaning, casting pushing out and cooling of the mold are achieved; the smelting furnace hot gas is discharged into a gas storage bag and then into the air inlet groove by starting the air extraction pump, the push rod is pushed out to preheat the mold and blow out impurities; after the mold is closed, the vacuum pump is used to extract air to form a vacuum environment, which is beneficial to molten aluminum filling and bubble discharging; after the casting is completed, the hot gas is discharged to push the push rod to push out the casting and cool it, so that the casting thermal stress and the mold thermal fatigue are slowed down, and the mold service performance and the casting quality are improved.

The utility model discloses an antitorque pull rod skeleton squeeze casting gating system and mould wherein the gating system comprises a mold core assembly, a mold cavity matched with an antitorque pull rod skeleton is formed in the mold core assembly, at least one pouring gate communicated with the mold cavity is arranged in the mold core assembly, and the mold core assembly is internally provided with at least one pouring gate communicated with the mold cavity. One end of the pouring gate is correspondingly arranged at a rod body of the torsion-resistant pull rod framework, the other end of the pouring gate extends towards the outer wall of the mold core assembly and is communicated with a pouring gate arranged on one side of the mold core assembly, and the peripheral side of the mold cavity is communicated with an exhaust structure. The torsion-resistant pull rod framework produced by the utility model not only achieves the effect of reducing the weight of an automobile, but also can meet the mechanical property requirement of the automobile on parts, and meets the high reliability requirement of the automobile parts.

The utility model relates to a mold closing device of a large vertical squeeze casting machine. The mold closing device comprises a mold system, a mold movement execution module and a mold movement balance module. The mold movement execution module comprises a mold closing oil cylinder and a mold closing cylinder seat plate; the mold movement balance module comprises a balance air cylinder, a fixing block, a high-pressure air storage tank, a pipeline connector and an air cylinder lock. The balance cylinder is fixedly mounted on the fixed block; and the fixed block is fixedly mounted on the mold closing cylinder seat plate. High-pressure gas storage tanks are fixedly mounted above the mold closing cylinder seat plate side by side; and a pipeline interface of the high-pressure gas storage tank is communicated with a rod cavity of the balance cylinder through a pipeline. According to the device, the balance cylinder is driven by the high-pressure air storage tank, and the balance cylinder provides pretension force for the movable template so as to balance partial weight of the movable template. Beneficial effects are that the weight of the movable template is balanced, a small-cylinder-diameter and low-power oil cylinder can be selected as a mold closing oil cylinder, and meanwhile, the mold opening response speed of the casting machine is also improved.

The present invention belongs to the technical field of nonferrous metal material preparation, and discloses a light alloy semi-solid melt preparation and injection extrusion casting molding equipment and method. The equipment includes an intelligent melt microstructure prediction module, a melt preparation unit, and an extrusion casting molding unit. The method includes the steps of equipment preheating, semi-solid melt preparation, injection feeding, and extrusion casting molding. The present invention achieves seamless docking between the melt preparation unit and the extrusion casting molding unit, realizing an integrated process from preparation to molding of the semi-solid melt. By coupling a unified phase field model to predict the changes in microstructure morphology under different process parameters during the semi-solid melt preparation process, the optimal process parameters of the semi-solid melt preparation process are determined, and the melt preparation process is optimized. This is of great significance for improving the controllability of the semi-solid melt, the stability of the semi-solid molded castings, and the product quality.

According to the technology, performance breakthrough is achieved through gradient reinforced aluminum-based composite material preparation, extrusion casting near-net forming and hypersonic flame spraying coating strengthening cooperation, specifically, 6061 aluminum alloy serves as a base body, 15% of SiC particles are doped in the core part to guarantee the strength, and 8% of nano Al2O3 is added to the surface layer to improve the hardness of a friction area; after extrusion casting and T6 heat treatment, the working face of the cam is sequentially subjected to sand blasting coarsening and anodic oxidation, then a WC-CoCr coating is sprayed through HVOF, laser remelting is conducted, and finally precision machining is conducted till the lift error is smaller than or equal to 0.005 mm. Compared with cast iron, the weight of a finished product is reduced by more than or equal to 33%, the coating hardness HV is 1200-1500, the wear rate is reduced, the fatigue life is prolonged, and the product is suitable for engines of passenger vehicles and commercial vehicles and good in mass production.

This utility model relates to the field of wheel hub casting, and more particularly to an aluminum-steel wheel hub extrusion casting mold with thermal fatigue resistance. This utility model provides an aluminum-steel wheel hub extrusion casting mold with thermal fatigue resistance, including a bracket, electric push rods, side molds, a cylinder, an upper mold, a lower mold, and an air outlet pipe. Electric push rods are installed on both sides of the bracket, and side molds are connected to the adjacent sides of the two electric push rods. A cylinder is installed on the top of the bracket, and the upper mold is connected to the output shaft of the cylinder. After the two side molds are fitted together, the upper mold and the lower mold can be completely fitted together. Fixing blocks are installed on both the front and rear sides of each side mold, and air outlet pipes are installed on the fixing blocks. The beneficial effects of this utility model are: 1. By setting up air outlet pipes, the continuous output of cold air from the air outlet pipes will cause the temperature of the two side molds to drop evenly. After the temperature stabilizes, the cast wheel hub will not crack, and the production efficiency will also be improved.

The invention discloses a preparation method of a squeeze-cast nano VC composite wear-resistant hob cutter ring, and belongs to the technical field of composite hob cutter rings. According to the method, alloy raw materials are weighed according to alloy components and put into an electric frequency induction furnace to be smelted, and then extrusion casting is conducted; the sample obtained after extrusion casting is pretreated, and then the sample is machined into a hob casting; the hob casting is subjected to heat treatment and subzero treatment; the problems that according to a traditional forging method, the number of forging heating times is large, procedures after forming are complicated, and the production efficiency is affected are solved; rapid cooling conditions provided by extrusion casting can inhibit precipitation of primary VC and provide necessary conditions for subsequent precipitation of nano VC; the material structure can be homogenized and refined through cold treatment, nano VC separated out through subsequent tempering can be further refined, the cyclic load can be resisted through the more uniform structure and smaller stress concentration, and therefore the wear resistance of the material is improved.

The utility model discloses an extrusion casting machine convenient for pouring soup in an injection chamber and used for producing a bicycle hook claw. The extrusion casting machine comprises a casting machine main body, and a pressurizing mechanism injects molten metal in a molten liquid storage tank into a liquid injection opening from a liquid injection pipe through pressurization. According to the extrusion casting machine convenient for pouring soup in the injection chamber and used for producing the bicycle hook claw, before the bicycle hook claw needs to be cast, compared with a traditional mechanical arm conveying mode, the mechanism is higher in safety, workers cannot make contact with high-temperature molten metal, the liquid injection speed is higher, after liquid injection is completed, a pressure pump is stopped, the effect of pressurization is lost, and the production efficiency is improved. When the metal liquid is pressurized, the piston is pulled back to the initial position by the tension spring, gas in the molten liquid storage tank flows out of the opening in the side surface of the connector, the metal liquid losing the pressurization effect falls back in the liquid injection pipe and flows back into the molten liquid storage tank, metal is prevented from being condensed in the liquid injection pipe, and explosion caused by too high gas pressure in the molten liquid storage tank at the high temperature for a long time is prevented.

The invention relates to a homogenizing composite pouring method of a high-beryllium aluminum alloy, which adopts a beryllium-based alloy as a main material, and through a double-flow smelting process, the main material is smelted in a flow A, and auxiliary materials such as an aluminum ingot and a Y-TiC-TiB2 / Al composite modifier are smelted in a flow B, so that the cooperation of interface modification and grain refinement is realized. And then, the A-flow melt and the B-flow melt are synchronously and compositely poured into a preheated casting mold according to the proportion, rapid solidification is achieved through extrusion casting, and finally hot isostatic pressing treatment is conducted. According to the method, beryllium-aluminum segregation, beryllium phase sedimentation and formation of microdefects are effectively inhibited, and the prepared beryllium-aluminum alloy is uniform in component, compact in structure, excellent in mechanical property and wider in application range.

The application relates to the field of aluminum alloy materials, and provides a manufacturing method of a high-strength thin-wall aluminum alloy extrusion casting part, and aims to solve the problems of insufficient strength and large heat treatment deformation of the existing aluminum alloy extrusion casting part. The method adopts an Al-Si-Mg-Cu-Zn series casting alloy with a specific component proportion, and through steps of an optimized extrusion casting process, solid solution treatment, precooling treatment and isothermal quenching, an organizational structure containing 1.0-3.5 vol% Al5Mg8Si6Cu2 strengthening phase is formed, the strengthening phase forms a semi-coherent interface with a matrix during precipitation, and the mechanical properties of the casting are effectively improved. The casting prepared by the application has a tensile strength of greater than or equal to 368 MPa, a yield strength of greater than or equal to 316 MPa, and a flatness deviation of 0.1-0.25 mm / 100 mm, is suitable for manufacturing thin-wall structural parts with high requirements for high strength and high dimensional accuracy, and has a wide engineering application prospect.

The application discloses a composite core which can be used for extrusion casting and pressure casting, and is composed of an inner core and a sand core layer, and can be used for extrusion casting and pressure casting, and can make the core free from preheating, and the sand core layer can be easily collapsed, so that the core can be easily taken out after the casting is completed.

The utility model relates to a die opening safety protection locking device for a movable template of an extrusion casting machine, which comprises a die opening safety protection locking component arranged between an upper fixed template and the movable template, and the die opening safety protection locking component comprises a fixed module, a movable module, a locking module and a driver in transmission connection with the locking module, the fixed module is fixedly connected with the upper fixed mold plate, the movable module is fixedly connected with the movable mold plate, and the movable module moves along with the movable mold plate and has a mold opening position state and a mold closing position state; the locking module moves along with the output end of the driver, is arranged on the mold opening safety protection locking assembly and is provided with a locking position and an unlocking position. The movable module and the fixed module have a locking state and an unlocking state; by means of the arrangement, it can be guaranteed that the sliding template is in a locked state when the extrusion casting machine opens a mold, and it can be guaranteed that the sliding template cannot fall off when an electronic element and hydraulic equipment break down.