3338 results about "Casting mold" patented technology

The present invention discloses a method and apparatus for simulating thermal stress of a casting mold during a service process, and a storage medium. The method comprises: importing a pre-built three-dimensional geometric model of the casting mold, processing the geometric model, and then performing grid division to obtain a casting simulation finite element physical model; assigning material parameters, interface parameters, process parameters, and boundary conditions to the finite element physical model to obtain a casting simulation finite element calculation model; performing casting process simulation calculations to obtain casting simulation results such as mold temperature field and stress field, and exporting result data; interpolating a temperature-stress correction factor; multiplying all correction factor data under the same node numbers with mold stress data to obtain final thermal stress distribution data of the mold during the service process.

The invention relates to the technical field of digital twinning, and discloses a precision casting mold life prediction method based on digital twinning, which comprises a mold data acquisition module, a mold data processing module, a mold coefficient generation module, a prediction model establishment module and a mold life prediction module. Physical data, operation data and maintenance records are synchronously collected through the multi-source sensor, and full-life-cycle real-time monitoring is achieved; establishing comprehensive evaluation of four types of quantization coefficients, thermal fatigue coefficients, comprehensive mechanical coefficients, comprehensive wear coefficients and comprehensive maintenance coefficients to realize multi-field damage coupling analysis; the life prediction index unifies the multi-dimensional damage to be 0-1 standard, outputs a visual life percentage and sets a graded early warning threshold value, so that the prediction precision is improved; all coefficients are calculated through a standardized formula, a full-digital process from data acquisition to index generation to model prediction to decision support is constructed, and the detection requirements of new materials and complex structure molds are met.

The invention relates to the technical field of die-casting dies, in particular to aluminum product integrated die-casting forming equipment which comprises a fixed die, a movable die, guide columns, a mold core, a mold cavity, a boss and a spray head, the guide columns are symmetrically arranged on the fixed die, the movable die and the fixed die are arranged in parallel, the movable die is slidably connected with the fixed die through the guide columns, and the mold core and the mold cavity are arranged on the adjacent faces of the fixed die and the movable die. The mold core and the mold cavity are matched to form a casting cavity, a groove is formed in the fixed mold, a swing assembly is arranged in the movable mold, bosses are arranged on the movable mold, the swing assembly is connected with the bosses, the bosses are distributed along the outer contour of the mold core or the mold cavity, the bosses are matched with the groove, extension assemblies are arranged in the bosses, spray heads are installed in the bosses, and the extension assemblies are connected with the spray heads. According to the mold spraying device, the swing assembly is used for driving the boss to rotate through the mold closing force between the movable mold and the fixed mold, meanwhile, the extension assembly is used for driving the spraying head to stretch out of the boss through the mold closing force between the movable mold and the fixed mold, and therefore the spraying agent is evenly sprayed to the surface of the mold.

The utility model relates to the technical field of mold shell pouring equipment, in particular to a precision casting mold shell vacuum pouring device which comprises a pouring seat, a bottom plate is arranged at the bottom of the pouring seat, a vibration mechanism is arranged between the bottom plate and the pouring seat, and a fixing column, a sealing groove and a mold groove are arranged at the top of the pouring seat. A top plate is fixedly mounted at the top end of each fixing column, a movable plate is arranged on the outer side of each fixing column in an attached and sleeving mode, an upper mold plate and an annular protruding block are fixedly mounted at the bottom of each movable plate, a pressure suction pipe is arranged at the top of each movable plate in a sealed and penetrating mode, and a sealing pressure spring is fixedly mounted on the inner wall of the bottom end of each sealing groove; according to the vacuum pouring device for the precision casting mold shell, by means of the structural design in the vibration mechanism, flowing and distribution of a mixture in the pouring process are facilitated, formation of air holes and shrinkage cavities in the mold shell is reduced, and the density and the surface quality of a casting are improved.

The invention discloses a copper alloy and a preparation method and application thereof, and belongs to the technical field of alloys. The copper alloy comprises the components of Cu, Al, Cr, Zr, Ni, Mg, Ti, Si, rare earth elements, Zn and the like, through the innovative design of Al-Cr-Si oxidation film synergistic protection, Zr-Ti-Mg nanophase strengthening, rare earth grain boundary purification and the like of the copper alloy, the breakthrough improvement of the high-temperature strength, the complex corrosion resistance, the machining performance and the environmental protection performance is achieved through the combination of the low-burning-loss smelting, rapid solidification and multi-stage heat treatment processes, and the copper alloy can be used for manufacturing the high-temperature-resistant alloy. The copper alloy can be widely applied to the fields of aerospace high-temperature parts, ocean engineering corrosion-resistant structural parts, high-end die-casting dies and the like, and fills the blank of the existing copper alloy technology.

The invention provides a magnesium-aluminum alloy casting molding cooling device, which relates to the technical field of casting process equipment, and comprises a cooling pool, a mounting rack fixed on the top of the cooling pool, a chain conveying belt arranged on one side of the mounting rack, a plurality of clamping mechanisms arranged at the bottom of the chain conveying belt in a transmission manner, and a cold air mechanism arranged on the cooling pool, a water circulation frame is arranged on the side, away from the cold air mechanism, of the top of the cooling pond. When a limiting block slides to the end part of the inner wall of a concentric-square-shaped limiting frame, a second bevel gear is meshed and matched with a first bevel gear, a third bevel gear is meshed and matched with a fourth bevel gear, and a started chain conveying belt drives a filtering assembly to move towards one side of a low filtering plate along a threaded rod, so that the whole filtering assembly moves towards the other side of the cooling tank; the difficulty of cleaning metal scraps in the cooling pond is reduced, water impurities in the cooling pond can be concentrated in the filtering assembly, and power output in the impurity collecting process is reduced.

A bearing hub casting mold and casting method. The mold comprises part models, risers and a sprue bush, wherein each riser is connected to the top of the part model; the sprue bush is connected to each riser by means of a horizontal runner; and the part models, the risers and the sprue bush are sequentially distributed from bottom to top in a vertical direction. In the bearing hub casting mold, by means of the provision of the riser at the top of each part model, a bearing hub is cast-molded by means of a top-pouring process, and after pouring, there is no isolated liquid-phase region during a solidification process of a casting, and the casting has no shrinkage porosity defect, thereby improving the quality of a bearing hub part.

The invention relates to a method for calculating the slag entrapment amount of continuous casting covering slag based on computational fluid mechanics, which adopts a large eddy simulation (LES) turbulence model, a multiphase flow model (VOF) and a discrete phase model (DPM) in CFD calculation, and combines a grid self-adaptive coarsening and refining mechanism and a VOF-to-DPM conversion mechanism. The method is used for numerical simulation and control of the slag entrapment amount of the continuous casting covering slag under the argon blowing condition, a slag entrapment mode calculation result is verified through a water model experiment, and a numerical simulation calculation result obtained through the method is well matched with a water model experiment result. Compared with the prior art, the method has the advantages that the slag entrapment amount of the continuous casting covering slag can be effectively calculated, and a basis is provided for controlling the slag entrapment amount of the covering slag.

The invention relates to a casting method of an isothermal quenching nodular cast iron subway wheel, and belongs to the technical field of casting. Comprising the steps of manufacturing a subway wheel casting mold; the method comprises the following steps: firstly, manufacturing a subway wheel metal mold comprising a pouring system, and placing a graphite block and a heating and insulating riser at a mold position corresponding to a large-thickness part of a subway wheel casting or a high-structure-compactness part of the wheel casting; then, an iron mold, graphite and precoated sand composite subway wheel pouring mold is manufactured through a core making machine; proportioning the components of the casting liquid and smelting the components; the smelted pouring liquid is subjected to a spheroidizing inoculation reaction, after the spheroidizing inoculation reaction is completed, the temperature is controlled, pouring is conducted on the manufactured pouring mold, and stream inoculation is adopted in the pouring process; and after pouring is completed, isothermal quenching post-treatment is conducted on the subway wheel casting. According to the casting technology, the solidification process of the casting is controlled to be sequential solidification, it is guaranteed that no isolated hot spot exists in the solidification process of the casting, and the quality of the casting with high internal density is obtained.

The invention discloses a conformal cooling device for die-casting die temperature intelligent control and a regulation and control method. The conformal cooling device comprises a die body, an embedded conformal cooling runner network, a multi-mode temperature sensing array, a partition flow regulation and control valve group, a central cooperative controller and a cooling medium circulation supply unit. Through the combination of shape follow-up runner design and partition dynamic regulation and control, a cooling blind area is effectively eliminated, the surface temperature uniformity of a cavity is remarkably improved, and the cooling time of a hot spot area is shortened, so that the defects of shrinkage cavities, hot cracks and the like are inhibited, and the defect rate of castings is reduced. And under the cooperation of multi-mode sensing and intelligent control, the system response is accelerated, the energy consumption is reduced, the die-casting rhythm is shortened, and the synchronous optimization of the production efficiency and the energy utilization efficiency is realized.

The utility model discloses a bottom die cooling disc of an automobile hub gravity casting die, which belongs to the technical field of automobile contour casting and comprises a bottom die body, a cooling pipe is arranged in the bottom die body, a liquid storage tank is fixedly connected to the bottom surface of the bottom die body, one end of the cooling pipe is fixedly communicated with the upper surface of the liquid storage tank, and the other end of the cooling pipe is fixedly communicated with the liquid storage tank. An auxiliary water pump is arranged in the liquid storage tank, the other end of the cooling pipe penetrates through the liquid storage tank and fixedly communicates with the water outlet end of the auxiliary water pump, four auxiliary cylinders are fixedly connected to the bottom face of the liquid storage tank, and a semiconductor chilling plate and a cooling fan are fixedly connected to the inner wall of each auxiliary cylinder. The bottom face of each semiconductor chilling plate is fixedly connected with a cooling fin. According to the bottom die cooling disc of the automobile hub gravity casting die, through cooperation of a plurality of assemblies, the efficient cooling capacity is achieved, long-time cooling is not needed during contour production, the contour production efficiency is effectively improved, and the effects of increasing production benefits and improving the using effect are achieved.

The invention belongs to the technical field of material processing, and discloses a magnesium alloy casting semi-solid injection molding method and application, and the method comprises the following steps: checking and adjusting a semi-solid injection machine, a casting mold and other equipment to be in a normal state, and placing magnesium alloy particles in a designated area of a hopper; putting a long nozzle of the semi-solid injection platform into the center of a mold sprue; setting the temperature of each section of a mold temperature controller, a charging barrel and a nozzle; preserving heat for a period of time after the temperature of the charging barrel reaches a set value, so that the temperature of materials in the charging barrel is uniform; setting the injection rate, the cooling time, the material return distance and the melt pressure of the semi-solid injection machine; and after a release agent is quantitatively sprayed to the mold, a semi-solid injection program is started, and a casting is obtained. The AS41B magnesium alloy particles with good heat resistance are adopted as the raw material, the semi-solid injection molding method is combined, a melting furnace is not needed, only heating to the semi-solid state is needed, the melt temperature is low, energy is saved, the service life of a mold is prolonged, protective gas is not needed, and the manufactured casting is good in mechanical property and high in heat resistance.

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 field of casting, and discloses a casting mold and a casting process for an air compressor gearbox shell, and the casting mold comprises a fixed mold, a movable mold, an electromagnetic vacuum valve communicating with a mold cavity, and a local extrusion mechanism arranged on the movable mold; the local extrusion mechanism comprises an air cylinder and a movable block, and an ejection mechanism is installed on the fixed die. The casting process comprises the following steps: before casting, exhausting air from the cavity through the electromagnetic vacuum valve; injecting molten metal; when the molten metal is in a pasty solidification period, the air cylinder pushes the movable block to carry out forced feeding; during forced feeding, the electromagnetic vacuum valve is quickly opened and closed, so that residual gas is discharged; and after the workpiece is solidified, the movable block is pushed again through the air cylinder at the moment of opening the mold, and the workpiece is stripped from the movable mold and stays on the fixed mold. The problems of casting air holes, shrinkage porosity defects and workpiece adhesion to the movable mold are solved, and the casting compactness and the workpiece strength are improved.

The invention discloses a mold temperature control system and method for a large complex die-casting mold, and the system comprises a mold temperature controller, a mold temperature collection unit, an oil temperature machine, a heating oil pipeline, a cooling water pump, a cooling water tank, a cooling water pipeline, a fixed mold, a movable mold, a fixed mold plate, a movable mold plate, an injection charging barrel, an injection punch, a pipeline integrated board, and a cable. The mold temperature controller is responsible for managing mold temperature control equipment in a centralized mode, the mold temperature collecting unit is responsible for collecting the temperature of the fixed mold core, the movable mold core, the injection charging barrel and the injection punch, the oil temperature machine is responsible for conveying heating oil, and the cooling water pump is responsible for conveying high-pressure cooling water. Through software and hardware integrated control of the die temperature control equipment, the problems of dispersed layout, poor coordination, low working efficiency and the like of the die temperature control equipment are solved, the process management and control capability of die temperature control is improved, real-time and accurate control of the die temperature is realized, the defects of deformation, shrinkage cavities, looseness and the like of die castings are reduced, and the die casting quality is improved. And the size stability and the qualified rate of the large complex die casting are improved.

A method for predicting the mechanical properties of a casting part based on the flow distances of an aluminum alloy melt, a method for designing a casting die for mega casting, and an aluminum alloy casting part produced through the casting die thus designed. By applying the method, the mechanical properties of the large components produced by mega casting within a specified process parameter window, especially at a specified injection speed, can be predicted and controlled, thereby the automation in automobile manufacture is improved, and the design and properties of the mega-casting products are optimized.

The invention relates to the technical field of engine casting molds, in particular to a cylinder sleeve limiting system of a high-pressure casting aluminum alloy slope type box, which comprises a mold, a core pulling device fixed on the mold and a limiting assembly connected in the mold in a sliding manner, and the core pulling device is used for driving the limiting assembly to axially move in a mold cavity; the limiting assembly comprises a sliding base connected to the mold in a sliding mode, a sliding block fixed to the sliding base and an insert fixed to the sliding block, and two symmetrically-arranged expansion blocks are connected to the insert in the diameter direction in a sliding mode. A cavity is formed in the center of the insert, an expansion pin is slidably connected into the cavity, and the expansion pin controls the end heads of the two expansion blocks to synchronously eject out or retract towards the peripheral face of the insert through axial movement. A channel is formed in the center of the expansion pin, an air inlet is formed in the sliding seat, one end of the channel is communicated with the cavity in the center of the insert, and the other end of the channel is communicated with the air inlet of the sliding seat. According to the scheme, the cylinder sleeve positioning precision of the engine box can be improved, and the casting process quality is guaranteed.

The invention discloses motor shell casting equipment with a cooling water pipe and a casting method thereof.The motor shell casting equipment comprises a casting mold and a sand core, the sand core is arranged in the casting mold in the vertical direction, a casting mold cavity is formed between the casting mold and the sand core, and the sand core is removed after casting is completed and forms an inner cavity of a casting; the spiral pipe fitting is arranged on the outer side of the sand core in a sleeving mode in the vertical direction and located in the casting cavity, and the spiral pipe fitting is integrally cast in the casting and forms a cooling water pipe; and the supporting assembly is arranged in the casting cavity, the spiral pipe fitting is arranged on the supporting assembly, and the supporting assembly is used for fixing the spiral pipe fitting and restraining the screw pitch of any adjacent ring layers in the spiral pipe fitting.

The invention discloses a casting device and method for producing a high-quality valve casting, relates to the technical field of metal casting devices, and solves the problems that when the cast casting is demoulded, the casting is cooled, and the traction force between the casting and a material in a lower mould base is relatively large, so that the casting is not easy to deform. The lifting rod can be moved out from the interior of the lower die base only through large extrusion force, and damage to a driving source and a casting is large. The casting device for producing the high-quality valve casting comprises a device support and a casting box, an upper support is installed at the top of the device support through screws, the casting box is arranged in the center of the top of the upper support, and the casting device comprises a vibration demolding mechanism installed in the upper support; and the casting mold is arranged in the casting box. According to the demolding device, through forward and reverse rotation of the driving source, the castings under different conditions can be ejected and demolded, the demolding effect is improved while the demolding efficiency is improved, and the quality of the demolded valve castings is guaranteed.

The invention relates to the technical field of die-casting processes, in particular to a shell die-casting cooling method and system.The method comprises the steps that the shell die-casting cooling process is simulated and analyzed through computer simulation software according to shell features, and the optimal layout and size of a cooling pipeline in a die-casting die are determined; a determined cooling pipeline is machined on the die-casting die, and a temperature sensor and a flow control valve are installed to monitor the temperature of the shell in each area and the temperature and flow of a cooling medium in the cooling process in real time; molten metal is injected into the die-casting die, and an air cooling system is started for primary air cooling; after the shell is preliminarily formed, a water cooling system is started, and sectional type cooling is adopted according to a computer software simulation result; the temperature sensor collects shell temperature data in real time and transmits the shell temperature data to the control system in real time, and the control system automatically adjusts the flow and temperature of a cooling medium through the flow control valve according to a preset temperature curve. And after water cooling is finished, the air cooling system is started again, and secondary air cooling is conducted on the shell.

The invention relates to the technical field of casting molds, in particular to a wax mold forming mold of an air bag lower support and a mold drawing method.The wax mold forming mold comprises an upper mold, a lower mold, a front mold, a rear mold and a right mold, a first boss is arranged on a forming part of the lower mold, the front mold, the rear mold and the right mold are located between the upper mold and the lower mold, and an inner movable block is located between the right mold and the front mold and the rear mold; the inner movable blocks comprise a first inner movable block, a second inner movable block and a third inner movable block, the first inner movable block penetrates through the upper die to be connected with the lower die in an inserted mode, one end of the second inner movable block is connected with the first inner movable block in a clamped mode, the other end of the second inner movable block abuts against the third inner movable block, and a supporting foot is arranged at the other end of the third inner movable block. And a plurality of side walls of the supporting legs are respectively propped against the lower mold, the rear mold and the first boss. The mold is optimally designed, one-time forming of the complex air bag lower support wax mold is achieved, and the applicability and flexibility of the mold to preparation of wax molds of different structures are guaranteed.

The invention relates to an aluminum alloy hub gravity casting mold, and belongs to the technical field of aluminum alloy casting, the aluminum alloy hub gravity casting mold comprises an upper mold, a lower mold and a side mold, the upper mold, the lower mold and the side mold are closed to form a hub cavity, and a plurality of feeding cavities are distributed in the inner side of the side mold in the circumferential direction of the hub cavity; each feeding cavity is communicated with a rim area on the top of the hub cavity, and lateral cooling assemblies are further arranged on the side die and distributed on the outer sides of the feeding cavities. A traditional whole-circle type side cap is replaced with the independent feeding cavities distributed in the circumferential direction of the hub cavity, the lateral cooling assembly is combined, the problems that the metal utilization rate is low and the feeding path is long due to the traditional whole-circle type side cap are solved, and the feeding efficiency is improved; and meanwhile, the independent flash is formed after the split type feeding cavity is solidified, the cutting and polishing procedures are simplified, and the post-treatment cost is reduced.

The utility model relates to the technical field of die-casting dies, in particular to a die-casting die for a gearbox shell, which comprises an upper die fixing plate and a lower die fixing plate, an upper die plate is fixed at the bottom of the upper die fixing plate, a mounting seat is fixed at the top of the lower die fixing plate, and symmetrical lower die plates are movably connected to two sides of the top of the mounting seat. A forming cavity is formed in the connecting position of the two lower die plates, and a connecting mechanism is arranged between the lower die plates and the lower die fixing plate. The two lower mold plates can be fixed at the top of the mounting seat through matching of the connecting rods and the clamping blocks, the two lower mold plates are spliced into a complete lower mold plate, the whole mold can be opened to facilitate cleaning and maintenance, the demolding plates can be lifted through the pressing plates on the two sides, demolding is facilitated, and the problems that in the prior art, the maintenance cost is high, and the demolding efficiency is high can be solved. And meanwhile, the two sides are lack of an auxiliary demolding function, and a machined part is inconvenient to take down when being clamped in a mold cavity.

The invention relates to the technical field of casting molds, and discloses an automobile planet carrier casting mold which comprises a mold plate arranged between an upper mold and a lower mold, an upper sand mold, a lower sand mold, a sand core and a sprue are installed on the mold plate, and the sand core is located between the upper sand mold and the lower sand mold and used for blocking cavity communication of the upper sand mold and the lower sand mold; guide columns corresponding to the upper and lower dies are mounted on the upper and lower end faces of the template, and are inserted into guide holes of the upper and lower dies, so that accurate die assembly is realized. Through combination of the upper sand mold, the lower sand mold and the sand core, the mold can mold an upper casting and a lower casting at the same time by using the sand core to block communication of the mold cavity, the production efficiency is greatly improved, the thickness of the sand core is set to be 0.8 times of the wall thickness of the casting, shrinkage porosity linearity caused by a hot spot in the casting can be avoided, and meanwhile, the production efficiency is improved. The pouring gate supplies liquid to the upper sand mold and the lower sand mold through the residue filter, impurities in molten metal are removed through the filtering assembly, the shrinkage porosity defect caused by the impurities is reduced, and therefore the qualification rate of castings is increased.

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 utility model belongs to the technical field of die-casting dies, and particularly provides a die-casting die convenient to disassemble for a die-casting machine, which comprises an upper die frame, a lower die frame, a support mechanism and a die core, the upper die frame is positioned above the lower die frame, the support mechanism is fixedly mounted at the bottom of the lower die frame, and the die core consists of a lower die core and an upper die core. The lower mold core and the upper mold core are fixed in the lower mold frame and the upper mold frame correspondingly, the mold further comprises a locking mechanism, built-in gas circuits are arranged in the upper mold frame and the lower mold frame correspondingly, and storage grooves are formed in the inner wall of the upper mold frame and the inner wall of the lower mold frame correspondingly; the locking mechanism comprises a swing block, a pin groove, an elastic pin, an arc-shaped air push rod and a hose. A worker can control a plurality of locking mechanisms to synchronously release or store through a single tool in a pneumatic driving mode, so that the disassembly and assembly of the mold core are completed, and the replacement efficiency of the mold core is greatly improved; the elastic pin and the swing block of the locking mechanism are used in cooperation, stress points are dispersed, concentrated stress of a shaft connected with the swing block is avoided, and it is guaranteed that the equipment has the long service life.

The invention relates to the technical field of casting molds, in particular to a high-precision wax mold forming mold for a complex-structure casting, which comprises a first outer mold, a second outer mold, a bottom mold and a top mold, a first inner module and a second inner module are arranged in the first cavity; the parting surface of the second outer mold and the first outer mold is arranged along the side part of the outer arc surface of the lower bracket of the air bag; the bottom die is connected with the first outer die and the second outer die in a clamped mode, a first through hole is formed in the bottom die, a first inserting rod is inserted into the first through hole, and the first inserting rod penetrates through the bottom die to be connected with first blind holes in the bottoms of the first inner die block and the second inner die block in an inserted mode. And the top die is matched with the end parts of the first inner die block, the second inner die block and the second outer die. Through reasonable design of the wax mold structure, one-time integral forming of the air bag lower support of a complex structure is achieved, meanwhile, smooth demolding of a wax mold is guaranteed, and the wax mold forming efficiency and quality are improved.

The invention provides a magnesium-lithium alloy and a semi-solid thixotropic die-casting preparation method of the magnesium-lithium alloy. The magnesium-lithium alloy comprises the following components in percentage by mass: 5-14% of Li, 2-9% of Al, 1-3% of Zn, 1-5% of Ca, 0.3-3% of RE and the balance of Mg. The semi-solid thixotropic die-casting preparation method of the magnesium-lithium alloy comprises the steps that S1, burdening and drying are conducted according to the preset mass percent, vacuum melting is conducted in the protective gas atmosphere, and molten metal is obtained and cast into a magnesium-lithium alloy cast ingot; performing extrusion deformation on the magnesium-lithium alloy ingot, and cutting to prepare millimeter-scale long rod-shaped magnesium-lithium alloy particles; s2, the magnesium-lithium alloy particles obtained in the S1 are heated to the solidus temperature Ts or above, electromagnetic stirring is conducted, and semi-solid slurry is prepared; and S3, the semi-solid slurry is injected into a die-casting die, a die cavity is filled with the slurry by applying pressure, die opening and part taking are conducted after pressure maintaining, and the ultra-light high-strength semi-solid thixotropic die-casting magnesium-lithium alloy casting is obtained.

The invention provides a triple GIS shell metal mold casting mold, and relates to the technical field of casting molds, the triple GIS shell metal mold casting mold comprises a casting bottom mold part, and a sand core assembly is arranged above the casting bottom mold part; the sand core assembly is used for forming a triple GIS shell flange; a wedge block positioning piece is mounted on the casting bottom mold piece; casting mold body parts are arranged on the two sides of the sand core assembly and used for being installed on a casting machine. The exhaust flow dividing piece is adopted and matched with opening of the second electromagnetic valve, suction through an external vacuum pump can be facilitated, exhaust is promoted, and the liquid inlet efficiency is improved; the problem that an existing triple GIS shell casting mold is not convenient to automatically control to actively exhaust and prevent hollowing in the early stage of casting is solved.

A casting mould for producing a casting formed from a light metal alloy, in particular a housing for an electric drive for a motor vehicle. The casting mould advantageously has at least one sand core which is designed and arranged in the casting mould in such a way that the at least at least one sand core can be completely surrounded, at least in sections, in a circumferential direction by a light metal melt with which the casting mould is filled to form the casting. It is advantageous to be able to produce a casting in which, for example, a cooling channel is incorporated. It is not necessary to drill a hole to form a channel. Furthermore, the invention relates to a process for manufacturing a casting made of a light metal alloy, in particular a housing for an electric drive for a motor vehicle.