61 results about "Liquid aluminium" patented technology

Disclosed is a method of producing hydrogen from the reaction of liquid aluminium or a liquid aluminium alloy with water vapour. The method includes the steps of: (a) providing liquid aluminium or liquid aluminium alloy, wherein said liquid has a surface; (b) reacting said liquid with water vapour in order to generate alumina and hydrogen, wherein if the reaction is carried out at a temperature range of 650 to 900 °C and a pressure range of 0.1 to 1 MPa, at least 50% of the hydrogen dissolves in the liquid, and wherein said reaction takes place at the surface and / or in the liquid; (c) extracting hydrogen in the form of gas from the liquid.

This invention relates to the manufacture of metal powders and discloses a controllable preparation method for semiconductor-grade ultrafine spherical aluminum powder, comprising: preparing a composite molten salt composed of a matrix salt and an interface pinning agent calcium fluoride and heating it to a dispersion temperature to form a homogeneous melt; shearing and dispersing liquid aluminum in the melt; performing temperature-controlled dissolution, controlling the cooling rate to allow calcium fluoride to precipitate in situ and adsorb before the aluminum droplets solidify, forming a physical pinning shell layer; and restricting solidification and removing the salt medium. This invention utilizes the temperature-dependent solubility characteristics to construct a microscopic physical barrier before the droplets solidify, effectively blocking droplet aggregation through steric hindrance, achieving high sphericity and extremely narrow particle size distribution of the aluminum powder; simultaneously, it utilizes calcium fluoride microcrystals to induce the formation of a dense fluorinated aluminum oxide composite passivation layer, improving the powder's resistance to electrochemical migration and insulation reliability.

The invention discloses a die for evaluating the performance of die-casting aluminum alloy, which comprises a movable die and a static die, and the movable die comprises a die frame and a die core mounted in the die frame. The die core is provided with a sprue spreader for receiving a liquid aluminum alloy material, a test runner for testing the fluidity of the liquid aluminum alloy material, an exhaust runner for exhausting gas generated in the test runner, and a vacuum mechanism for enabling the test runner to form a vacuum state, which are connected in sequence; and a hot cracking island for testing the hot cracking tendency is arranged on the test runner. The fluidity of a liquid aluminum alloy material is tested by arranging the test flow channel, the test flow channel can form a die-casting aluminum alloy sample in a vacuum state and a non-vacuum state through the vacuum mechanism, and the die-casting aluminum alloy sample in a target shape can be cut out from the test flow channel to be tested; the mechanical property, the microstructure and the casting defect of a die-casting aluminum alloy sample are detected, and the hot cracking tendency is tested by arranging a hot cracking island on a test runner.

The embodiment of the utility model provides evaporation equipment which comprises an evaporation tank, the evaporation tank comprises a tank bottom and side plates, the horizontal projection of the tank bottom is rectangular, and the side plates are fixedly connected to four side edges of the tank bottom; the evaporation tank comprises a high-temperature section and a transition section, and the upper surface of the tank bottom is a plane within the range of the high-temperature section; within the range of the transition section, the upper surface of the groove bottom is an inclined surface, and the lower end of the inclined surface is connected with the plane; the high-temperature section is connected with the first heating assembly, the transition section is connected with the second heating assembly, and the set temperature of the first heating assembly is higher than that of the second heating assembly. After the technical scheme is adopted, the aluminum material in the molten state does not need to be directly evaporated from a solid state like a traditional technology, the aluminum material in the molten state is input into the evaporation tank, then the aluminum material in the liquid state is heated for evaporation, and the problem of aluminum material sputtering frequently occurring in existing operation is avoided.

The utility model discloses a connection structure of a battery cell top cover pole, which comprises a top cover plate, and two mounting holes are arranged on the top cover plate. According to the utility model, the upper pole and the lower pole are connected through the two mounting holes, the pouring hole of the upper pole is butted with the pouring groove of the lower pole, and then grouting operation is carried out through the pouring hole of the upper pole so as to fill a connecting cavity between the upper pole and the lower pole, and the grouting material is a liquid high-conductivity metal material, preferably liquid aluminum; after normal pouring and sealing are completed, liquid metal poured inside needs to be cooled and formed, finally metal overflowing from the pouring holes of the upper pole is milled through CNC machining, connection between the upper pole and the top cover plate and between the lower pole and the top cover plate is achieved, firmness between the top cover poles is improved, the failure risk is reduced, and the machining and manufacturing cost is reduced. In addition, during irrigation, the two irrigation holes can be irrigated through the irrigation assembly at the same time, and the irrigation efficiency is improved.

The utility model provides a laminated liquid aluminum electrolytic capacitor. The aluminum electrolytic capacitor comprises an aluminum shell, a positive pole, a negative pole, a pressure release valve and a laminated structure core bag, wherein the laminated structure core cladding is located in the laminated liquid aluminum electrolytic capacitor; the secondary core package with the laminated structure comprises anode foil / cathode foil, electrolytic paper, a plurality of layers of anode tabs, a plurality of layers of cathode tabs and a high-temperature adhesive tape which are alternately laminated, each of the plurality of layers of anode tabs is connected with the anode foil in the alternately laminated anode foil / cathode foil, and each of the plurality of layers of cathode tabs is connected with the high-temperature adhesive tape; each tab in the multiple layers of cathode tabs is respectively connected with the cathode foil in the alternately stacked anode foil / cathode foil, and the electrolytic paper is positioned between the alternately stacked anode foil and cathode foil. The laminated liquid aluminum electrolytic capacitor provided by the embodiment of the utility model is high in capacity, low in internal resistance and small in loss.

The invention discloses a normal-temperature liquid aluminum-based oxyhalide inorganic electrolyte, and a preparation method and application thereof, and relates to the technical field of inorganic electrolytes. The general chemical formula is Li < x > Al (1-my) A < y > B < ny > Cl (3-x-3my) O < x >, xlt; 0.6, 0 < = y < lt >; 0.3, 2 < = n < = 5, 1 < = m < = 3; m is an integer, and n is an integer; a is at least one of Al, Ta, Nb, Hf, Zr, In, Zn, Y, B and Sc; and B is at least one of Cl, Br, S, I and N. The electrolyte disclosed by the invention is in a liquid state with relatively high viscosity at room temperature, has viscoelasticity and shows excellent ionic conductivity. The raw materials are simple, the cost is low, the synthesis is simple, convenient and rapid, the energy consumption is low, and the HCl gas generated by anion exchange has low boiling point and is not easy to remain in the system. After being doped with anions and cations, the liquid viscoelasticity is still kept at room temperature, and the ionic conductivity is still excellent.

The utility model belongs to the technical field of non-ferrous metal smelting, and particularly relates to a non-ferrous metal producing and smelting device which comprises a base, two vertical plates are fixedly connected to the base, rotating columns are rotatably installed on the two vertical plates, a smelting tank is fixedly connected between the two rotating columns, a discharging pipe is connected to the bottom end of the smelting tank, and the discharging pipe is connected to the bottom end of the smelting tank. An inserting groove is formed in the discharging pipe, a plugging plate is inserted in the inserting groove, a lifting plate is fixedly connected to the top end of the plugging plate, a handle is assembled on the lifting plate, and a filtering plate is arranged in the discharging pipe; during use, impurities mixed in molten aluminum can be intercepted and filtered by arranging the filter plate, so that the purity of the molten aluminum can be ensured, high-quality raw materials are provided for subsequent processing, the quality of subsequent products is improved, the impurities adhered to the surface of the filter plate can be cleaned and removed, and the production efficiency is improved. Therefore, the phenomenon that the filter plate is blocked is avoided, and the subsequent filtering effect is ensured.

The invention relates to the technical field of motor shell production, in particular to a mold for an aluminum motor rear cover. Comprising a support, a lower die and an upper die are arranged on the support in the vertical direction in a sliding mode, the upper die and the lower die are connected with the support through a telescopic rod and a connecting rod respectively, a motor rear cover cavity is formed between the upper die and the lower die, and an injection pipe communicated with the motor rear cover cavity is fixed to the upper die. Through the integrated design of the upper cooling cavity, the lower cooling cavity and the pipe inserting system, cooling liquid circularly flows in the mold, and liquid aluminum is rapidly and evenly cooled. The casting period is shortened, material compactness reduction and toughness loss caused by too fast local cooling are avoided, when the casting is separated, cooling liquid in the upper cooling cavity is discharged through the upper insertion hole, direct contact with the casting is avoided, and the thermal stress defect is reduced.

The utility model relates to the technical field of aluminum ingot forming dies, and discloses an aluminum ingot forming fixing die which comprises a forming die, a sliding cavity is formed in the top side of the forming die, a forming cavity is formed in the inner wall of the bottom side of the sliding cavity, and the forming cavity provides a cavity for liquid aluminum ingot casting forming. The top cover frame is embedded in the sliding cavity of the forming die in a sliding mode, impurities on the surface of molten aluminum in the forming cavity are scraped and cleaned through horizontal sliding of the top cover frame in the sliding cavity, a frame opening is formed in the top cover frame, and rotating grooves are formed in the two side walls of the top cover frame correspondingly; according to the utility model, the limiting plate is rotationally adjusted to 180 degrees, so that the two supporting legs on the limiting plate limited on one side of the top cover frame are separated, the top cover frame can slide horizontally in the sliding cavity of the forming die, and impurities on the surface of molten aluminum in the forming cavity can be scraped and cleaned; and the conditions that pits, slag inclusion, air holes and other defects are formed on the surface of the molten aluminum after the molten aluminum is solidified are reduced, and the smooth appearance of the cast aluminum ingot is guaranteed.

According to the method for preparing the aluminum-scandium intermediate alloy with the assistance of aluminum chloride, a molten salt system is formed in an electrolytic furnace, and the molten salt system comprises, by mass, 5%-10% of AlCl3, 45%-47.5% of NaCl, 45%-47.5% of KCl and Sc2O3 accounting for 1%-3.5% of the total mass of the AlCl3, the NaCl and the KCl. And the molten salt system is heated to 730 DEG C to be molten, liquid aluminum serves as a cathode, graphite serves as an anode, the electrolysis temperature is 730-800 DEG C, the current magnitude is 1.5-2.7 A, electrolysis is conducted for 0.5-2.5 h, and the Al-Sc alloy is deposited at the position of the aluminum cathode at the bottom of the electrolytic cell. Metal Sc is not used as a raw material, the whole process is simple, the requirement for equipment is low, and implementation is easy. The energy consumption and the pollution are low.

The present invention belongs to the field of casting technology and provides a multifunctional casting method and apparatus. On the one hand, a protective atmosphere is added during the casting process to prevent oxidation of the liquid aluminum alloy and the solid iron matrix. On the other hand, in-situ heat treatment is performed to achieve stress relief annealing and reduce interfacial stress concentration. The present invention integrates the casting and heat treatment operations, avoiding interfacial cracking caused by rapid temperature drop during the transfer of the casting and avoiding cracking of the bimetallic interface. At the same time, by adjusting the atmosphere in the casting chamber during casting, the present invention can mark entrained structure oxide film defects during the casting process.

The application discloses a dry-out prevention wide-temperature-range liquid aluminum electrolytic capacitor and a preparation method thereof, and relates to the technical field of capacitors. The application comprises the following steps: firstly, cutting pretreated anode foils, cathode foils and electrolytic paper into predetermined sizes; then, riveting anode lead pins with the pretreated anode foils, riveting cathode lead pins with the cathode foils, and winding the pretreated anode foils, the cathode foils and the electrolytic paper into a core package after the riveting treatment; then, loading modified electrolyte into an aluminum shell, immersing the core package in the modified electrolyte, and then performing sealing, assembling, casing, aging treatment to obtain the dry-out prevention wide-temperature-range liquid aluminum electrolytic capacitor. The pretreatment of the anode foils effectively improves the dry-out prevention performance and stability of the capacitor; the components such as the synergist introduced in the modified electrolyte further improve the cycle life, the stability at low temperature and high temperature. Therefore, the capacitor has a more extensive application prospect.

The invention belongs to the technical field of new materials, and provides a cubic boron nitride particle reinforced aluminum-based composite material and a preparation method thereof. The preparation method comprises the following steps: putting cubic boron nitride particles into a mold, putting an aluminum block containing trace silicon element on the cubic boron nitride particles, vacuumizing, heating and preserving heat; and inert gas is introduced for heat preservation and pressure maintaining, and molten aluminum liquid is pressed into gaps among cubic boron nitride particles. The cubic boron nitride particle reinforced aluminum-based composite material is obtained by adding a trace amount of silicon element into an aluminum matrix and utilizing a gas pressure infiltration method, so that the wettability of liquid aluminum and cubic boron nitride particles can be improved, the interface design of the composite material is realized, the interface thermal resistance of the composite material is reduced, and the interface bonding of the composite material is improved; the cubic boron nitride particle reinforced aluminum-based composite material with excellent comprehensive performance is obtained, has an excellent heat dissipation effect, and can meet the heat dissipation requirements and mechanical property requirements of heat dissipation parts of high-power electronic devices.

The pure liquid aluminum conveying trough comprises a conveying trough body and a discharging trough body, a discharging opening is formed in one side of the outer wall of the discharging trough body, a partition plate is arranged in the middle of the discharging trough body, a heat preservation cover is arranged at the top of the conveying trough body, observation openings are formed in the two sides of the heat preservation cover, and movable doors are arranged outside the observation openings. A heat preservation cover is arranged at the top of the discharging groove, an inspection box is fixedly connected to the top of the heat preservation cover, an access door is arranged on the side, away from the conveying groove, of the inspection box, an air inlet bin is fixedly connected to the top of the access door, a pump body is fixedly connected to one side of the outer wall of the air inlet bin, and an air pipe is fixedly connected to the exhaust end of the pump body. The conveying trough, the discharging trough, the inspection box and the pump body are matched with one another, so that when the conveying trough is maintained and operated after conveying, hot air flow can be prevented from being directly sprayed outwards from the access door, the safety of workers is protected, and meanwhile, the maintenance efficiency of the conveying trough is improved.

The application provides a preparation method of an aluminum-lithium alloy with adjustable components, and belongs to the field of non-ferrous metallurgy. The method comprises the following steps: preparing a mixed molten salt containing LiCl, KCl and / or NaCl as an electrolyte; preparing a mixed molten salt containing LiCl and AlCl3 as an electrolytic material, and determining the molar ratio of AlCl3 to LiCl in the electrolytic material and the single-feeding amount according to the target components of the aluminum-lithium alloy, the current efficiency of electrolytic aluminum and electrolytic lithium, and the single-feeding interval time; taking a graphite electrode as a cathode and an anode, and adding the electrolytic material with the set molar ratio into the molten-state electrolyte at intervals and quantitatively to carry out an electrolysis reaction, so as to obtain a liquid aluminum-lithium alloy with the target components. The application controls the feeding amount in the single-feeding interval and the mass of Al and Li generated in the single-feeding interval, so as to obtain the liquid aluminum-lithium alloy with the target components.

The utility model relates to the technical field of molten aluminum refining, in particular to molten aluminum refining equipment. Comprising a bottom plate, a refining equipment body and an auxiliary mechanism, the auxiliary mechanism comprises a treatment box, a top cover, a lower water distribution seat, an upper water distribution seat, a filter screen, a water inlet pipe, an exhaust pipe, a blow-off pipe and an extraction device, and when the treatment box needs to be cleaned, the extraction device is controlled to stop acting, and a control valve on the blow-off pipe is opened; a pressure water source is conveyed into the upper water distribution seat through the water inlet pipe, the water source can be sprayed out through the side wall flushing nozzles, so that the planes of the four side walls of the bottom of the treatment box are flushed, further, the pressure water source is conveyed into the lower water distribution seat at the same time, and pressure water can be sprayed out through the horizontal nozzles, so that the bottom of the treatment box can be flushed; and sewage can be guided out through a blow-off pipe, so that the problems that the interior of the box body cannot be automatically cleaned and the use is inconvenient after the harmful gas is filtered by the existing molten aluminum refining equipment are solved.

The present invention relates to a method for regulating the adhesion force between molten aluminum and a solid interface by changing heat transfer characteristics. The method comprises the following steps: (1) using a piece of solid aluminum as a probe, and using a piece of solid silicon and a piece of solid aluminum as substrates to form an aluminum-aluminum system and an aluminum-silicon system, respectively; (2) establishing a molecular dynamics liquid-solid adhesion model composed of the probe and the substrate; (3) measuring the adhesion force between the liquid-solid interface after the system reaches equilibrium; (4) executing a simulation process and processing data: analyzing the energy transfer process of the liquid-solid interface, calculating the interfacial thermal conductivity during the adhesion process, extracting the phonon spectrum of the liquid contacting the solid substrate at the interface, and analyzing the relationship between the heat energy transfer efficiency and the phonon spectrum when the adhesion force between the probe aluminum liquid and the solid substrate changes under different contact interface conditions. The present invention combines molecular dynamics and quantum theory to reveal the heat transfer mechanism of adhesion between liquid aluminum and the solid aluminum / silicon interface when the temperature of the solid substrate increases.

The utility model relates to the technical field of scum salvage, and discloses a molten aluminum holding furnace scum salvage device, which comprises a moving mechanism and a salvage mechanism, the salvage mechanism is movably connected to the top of the moving mechanism, the salvage mechanism comprises a support unit and a filter unit, the support unit is movably connected to the top of the moving mechanism, and the filter unit is movably connected to the top of the moving mechanism. The filtering unit is fixedly connected to the side surface of the supporting unit. According to the dross fishing device for the molten aluminum holding furnace, by arranging the movable bottom frame, the flexibility of the device can be higher, the device can bear the fishing work of a plurality of holding furnaces, the fishing safety is improved through the mode that the connecting frame is matched with lifting driving, the scalding condition is prevented, and by arranging the working sequence of inhaling, filtering and removing, the working efficiency is improved. When the device is used, the fishing efficiency is higher, repeated fishing is not needed, the working efficiency is improved, and the device has the advantages of being high in automation degree, high in fishing efficiency, safe to operate and the like.

The invention discloses intelligent pouring equipment for aluminum alloy profile casting, and relates to the technical field of profile casting, and the intelligent pouring equipment comprises a feeding mechanism and a cooling mechanism; the feeding mechanism is provided with a diversion trench, one end of the diversion trench is used for introducing liquid aluminum alloy higher than the pouring temperature, the other end of the diversion trench is sequentially provided with a diversion pipe fitting and a valve kit, the diversion pipe fitting comprises a plurality of diversion branch pipes arranged in parallel, and the outer side wall of each branch pipe is provided with a temperature control assembly. The valve suite comprises a port sleeve and an adjusting valve, the adjusting valve is arranged at an inlet of the port sleeve, a discharging port corresponding to a mold feeding port is fixed below the flow guide groove, an outlet of the port sleeve is communicated with the discharging port, and outlets in the tail ends of the flow dividing branch pipes are all communicated with an inlet of the adjusting valve; the cooling mechanism is provided with a plurality of medium leading-in pipes and medium leading-out pipes, an inlet and an outlet of the temperature control assembly are connected and communicated with the tail ends of the medium leading-in pipes and the tail ends of the medium leading-out pipes respectively, and the cooling mechanism can control circulation on-off and flow of the pipes. The temperature can be accurately controlled, and casting defects are reduced.

The invention relates to a method for producing a die (1) for an aluminum casting process, which die (1) at least partly delimits a cavity (3) designed to receive liquid aluminum during the aluminum casting process, in which method a main body (2) of the die (1) is provided, said main body being made of a main-body material, and at least one reinforcing layer (6), which delimits the cavity (3) and is made of a reinforcing material that differs from the main-body material, is additively built on at least one portion (5, 14-16) of the main body (2) by means of an additive manufacturing method.

The invention provides an aluminum-molybdenum alloy and a preparation method and application thereof, and belongs to the technical field of alloy materials. The preparation method comprises the following steps that in the inert gas atmosphere, a carbon electrode serves as an anode, metal aluminum serves as a cathode, electrolysis is conducted in a mixture of molten salt electrolyte and a molybdenum source, and the aluminum-molybdenum alloy is obtained. According to the preparation method, the aluminum-molybdenum alloy is synthesized in situ based on the liquid aluminum electrode, anode metal mud is not generated, continuous production of the aluminum-molybdenum alloy can be achieved, a molybdenum source does not need to be subjected to impurity removal treatment, the technological process is simplified, energy is saved, consumption is reduced, the components of the aluminum-molybdenum alloy can be regulated and controlled, the aluminum-molybdenum alloy with different compositions is obtained, and the method is suitable for industrial production. And the prepared aluminum-molybdenum alloy is compact in structure, uniform in component and low in impurity content.

The invention discloses a die-casting device for an automobile trunk reinforcing plate and capable of automatically discharging slag, and relates to the technical field of die-casting devices.The die-casting device comprises a base, an injection device, a tiebar, a fixed die seat plate, a movable die device, a bent elbow device and a tail plate device.The injection device injects liquid aluminum alloy raw materials into a fixed die, and the movable die device adopts the automatic cleaning technology; in the die opening and closing process of the die casting machine, the surface of the fixed die is automatically cleaned, the cleaning state of the surface of the die is kept, the forming quality and consistency of die-casting products are improved, the die is automatically retracted to a safe position when closed, meanwhile, the negative pressure adsorption technology is used, residues generated in the cleaning process are effectively adsorbed, and in the cleaning process, the cleaning efficiency is improved. After cleaning is finished, the residues in the residue discharging box automatically fall off to the bottom of the residue discharging box under the action of inertia to be discharged, blockage caused by residue attachment and accumulation is effectively prevented, the bent elbow device is used for controlling mold opening and closing, and the tail plate device can adjust the position of the mold.

A narrow-width titanium-aluminum solid-liquid composite material. The composite material comprises a titanium strip and an aluminum strip, which is formed by casting and rolling molten aluminum, wherein the titanium strip is made of pure titanium or a titanium alloy; and the aluminum strip is one of 1-series pure aluminum, 3-series aluminum alloy, 5-series aluminum alloy and 6-series aluminum alloy. The peel strength between the titanium strip and the aluminum strip is greater than or equal to 60 N / mm. The tensile strength of the narrow-width titanium-aluminum solid-liquid composite material is greater than or equal to 300 MPa, the yield strength thereof is greater than or equal to 200 MPa, the composite surface shear strength thereof is greater than or equal to 180 MPa, and the elongation thereof is larger than or equal to 20%. The titanium-aluminum solid-liquid composite material has both good mechanical strength and bonding strength.

The utility model discloses a kind of aluminium bar processing melting casting moulds of convenient dismounting, including installation box body for installation, first electric telescopic link, second electric telescopic link, mould base and transmission rod fixedly installed in the inside of installation box body, the mould base is arranged in the inside of installation box body, and aluminium bar is installed in the inboard of mould base, the upper of mould base is provided with screw rod, and the outside of screw rod is installed with connecting block, and the lower end of connecting block is fixedly connected with the upper end of mould base, the transmission rod is installed on the front side upper end of installation box body, and the both ends of transmission rod are respectively provided with conical wheel. The aluminium bar processing melting casting mould of convenient dismounting, after liquid aluminium solidifies into aluminium bar, mould can be separated to form interval, avoid aluminium bar to be bonded in mould, convenient for the taking out of aluminium bar, and uniformly distributed cooling pipeline shortens the time needed to form aluminium bar, and after liquid aluminium is injected into mould, the sealing of device is guaranteed, improve security and product success rate.

The invention discloses a production method for manufacturing a high-strength high-silicon aluminum alloy capable of being rapidly extruded by using recycled waste aluminum, which comprises the following steps of: crushing and screening aluminum waste to leave aluminum-containing fragments, and separating aluminum materials from the aluminum-containing fragments; preheating an aluminum material and melting the aluminum material into a molten aluminum melt A; refining, stirring and slagging off the melt A, and blowing to remove hydrogen; after refining, transferring to an alloying furnace, and adjusting components to obtain an aluminum alloy melt B; adding an AlTiB wire into the melt B, and carrying out online degassing and filtering to obtain a melt C; casting the melt C to obtain an aluminum alloy round cast ingot D; and the round cast ingot D is subjected to homogenizing annealing, an aluminum alloy round cast ingot E is obtained, and production and machining of the high-strength and high-silicon aluminum alloy are completed. According to the method, the recycled waste aluminum serves as the raw material, the inclusivity of the Si content and the Fe content is high, the waste aluminum is utilized at a guaranteed level, the problem that secondary aluminum is immature in use in the aspect of extruded profiles is solved, and the method has important significance on recycling of aluminum resources and sustainable development of the aluminum production industry.

The utility model relates to the technical field of holding furnaces, and discloses a refining agent adding device for a molten aluminum holding furnace, an adjusting mechanism is arranged between a molten aluminum holding furnace body and a furnace cover, and a covering mechanism is arranged on a feeding pipe; the adjusting mechanism comprises a pushing assembly and a stirring assembly, the pushing assembly comprises a connecting ring, a gear is fixedly connected to the surface of a rotating shaft, an annular gear ring is fixedly connected to the top of a fixing ring, and a hinge plate is hinged between a connecting plate and a pushing plate. According to the refining agent adding device for the molten aluminum holding furnace, stirring blades are driven to rotate through an adjusting mechanism and a rotating rod, a stock solution in the molten aluminum holding furnace body can be mixed and stirred, the inner wall of the molten aluminum holding furnace body is scraped by a scraping plate, the stock solution adhering to the inner wall of the molten aluminum holding furnace body is scraped, stirring is more uniform, and the refining agent adding device is convenient to use. And the furnace cover is driven to rise to be opened, so that a large amount of refining agent can be conveniently and directly poured into the molten aluminum heat-preserving furnace body in the later period, and the feeding time can be shortened.

A device of regulating a melting speed of an aluminum alloy smelting furnace burner. The device includes: a natural-gas flow-rate regulating assembly, an air flow regulating assembly; a natural gas burner, connected to the natural-gas flow-rate regulating assembly and the air flow regulating assembly and mounted in a melting zone of the melting furnace to melt aluminum alloy into an aluminum liquid; a scum filtration assembly, including a ceramic tube connected to a ceramic filter cylinder, a foam ceramic filter plate being merged in an aluminum liquid thermal-insulation pool; a rangefinder, mounted above the scum filter assembly; a controller for obtaining weights of the aluminum liquid corresponding to two adjacent time points, obtaining the actual melting speed according to a difference in the weights, and regulating the flow rate of the natural gas and the air flow to adjust the actual melting speed to reach a target melting speed.

The utility model relates to the field of motor rotor die-casting, in particular to a die-casting die for an asynchronous rotor iron core height automatic compensation process, an extrusion mechanism comprises an extrusion base plate, a guide base plate and a limiting base plate, a plurality of extrusion needles are arranged on the extrusion base plate, extrusion holes matched with the extrusion needles are arranged on the guide base plate, and the limiting base plate is arranged on the guide base plate. A containing groove is formed in the limiting base plate, a movable die core is arranged in the containing groove, a plurality of die-casting holes are formed in the movable die core in a cc mode, the front end of each extrusion needle penetrates through the corresponding die-casting hole to extrude the die, and a correcting device is arranged at the end of the movable die core. The die-casting mechanism comprises a fixed base plate and a fixed die core, the fixed die core and the movable die core are attached to form a die-casting cavity, and the die-casting cavity is used for storing liquid aluminum liquid until the liquid aluminum liquid is cooled and shaped. And the product quality of the asynchronous motor rotor is improved.

The utility model discloses a die casting system for aluminum alloy products, which relates to the technical field of aluminum alloy die casting and comprises a base, four limiting slide bars are uniformly and fixedly arranged above the base, a die stripping device is arranged among the four limiting slide bars and above the base, a plurality of lower die block units are arranged above the die stripping device, and a plurality of lower die block units are arranged above the lower die block units. A top plate is fixedly arranged above the four limiting sliding rods, a hydraulic cylinder is fixedly arranged on the lower end face of the top plate, an upper module unit is arranged on the limiting sliding rods in a sliding mode, the upper end face of the upper module unit is fixedly connected with an output shaft of the hydraulic cylinder, a liquid conveying hopper is fixedly arranged on one side of the top plate, and the upper module unit is communicated with the liquid conveying hopper through a guide pipe. The upper module unit is controlled to ascend and descend through the hydraulic cylinder, aluminum alloy can be conveniently subjected to die casting, liquid aluminum alloy solution can be conveniently poured through the liquid conveying hopper, and the pouring efficiency is improved.