5544 results about "Casting mold" patented technology

The invention provides a casting system temperature intelligent control method which comprises the following steps: acquiring a casting mold characteristic area, and setting a thermocouple in the mold characteristic area based on casting structure characteristics; a random forest model is established according to thermocouple temperature measurement results and casting quality detection results, recursive feature elimination is carried out, correlation between thermocouple temperature measurement data and casting quality is discriminated, the number of thermocouples is optimized, and the thermocouples are screened; and analyzing according to the temperature data of the thermocouple temperature measuring points, the cooling process parameters and the corresponding casting quality, constructing the relationship among the cooling process parameters, the initial temperature of each mold thermocouple and the casting quality through a gradient lifting decision tree model, and controlling the temperature of the casting system based on the relationship. By arranging the thermocouple and based on the random forest model and the gradient boosting decision tree model, the temperature control accuracy is improved, the temperature is adjusted in time, and the purposes of optimizing the casting process, reducing defects and ensuring high-quality manufacturing of the aluminum alloy hub are achieved.

The invention discloses rapid die casting equipment for aluminum alloy die castings, and relates to the technical field of metal die casting. A first channel is formed in a die plate and an ejector rod, and a spray hole communicating with the first channel is formed in the ejector rod; according to the device, the mold release agent can be sprayed to the relatively-closed die-casting cavity in a mold closing state, the comprehensive uniformity of the mold release agent during adhesion is improved, the demolding effect after a die casting is formed is improved, the mold release agent is sprayed in the relatively-closed die-casting cavity, and the mold release effect is improved. According to the die-casting mold core, the release agent can be prevented from escaping outwards, the surrounding environment can be protected easily, waste of the release agent can be avoided, energy-saving, environment-friendly, green and efficient die-casting production is achieved, meanwhile, the spraying holes are formed in the cylindrical face of the end of the ejector rod, the spraying holes cannot be exposed when the ejector rod retracts into the die core, and the die-casting mold core is more environment-friendly. And interference to die-casting production due to the fact that the spraying holes are exposed in the die-casting cavity can be avoided.

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 machine shell casting, and discloses a combined pump body machine shell casting mold and a using method thereof.The combined pump body machine shell casting mold comprises a base, a telescopic rod is fixedly connected to the top of the base, and a mounting plate is fixedly connected to the end, away from the base, of the telescopic rod; when the first piston block moves upwards, the first piston block drives the second piston block to move upwards along the inner wall of the hydraulic cylinder through the fixing rod, so that a solution in the hydraulic cylinder enters the first hydraulic telescopic rod, and the first hydraulic telescopic rod extends outwards; a first hydraulic telescopic rod drives a cross-shaped blocking plate to slide downwards along the inner wall of a second fixing plate through a pulling frame, high-pressure gas in an exhaust groove can be sprayed out through a gap between the cross-shaped blocking plate and the second fixing plate, the high-pressure gas acts on the bottom of a shell, and gas demolding is replaced with the high-pressure gas; and the pressure on the outer wall during demolding of the shell is effectively reduced.

The invention discloses a casting shape / property regulation and control device and method based on a casting mold temperature control technology, and relates to the technical field of intelligent casting. The invention aims to solve the problems of uncontrollable limitation of a traditional casting solidification control technology in a casting solidification process and low yield of a thin-wall casting process. According to the casting shape regulation and control technology based on the casting mold temperature control technology, the casting mold temperature field is controlled before casting mold filling, and mold filling of a complex thin-wall casting is facilitated; the casting solidification process is controlled through the cooling medium, the mechanical property of the casting is improved, and the casting quality is improved. The invention can obtain the casting shape / property regulation and control device and the regulation and control method based on the casting mold temperature control technology.

The invention belongs to the technical field of aluminum alloy casting, and relates to a gap type pouring system and method for a ZL205A alloy cylindrical casting. According to the diameter of the barrel-shaped ZL205A alloy casting, a certain number of gap type pouring gates are arranged on the outer side, vertical barrels of the gap type pouring gates are located on pouring gate pieces connected with cross-shaped annular transverse pouring gates, pouring gates for anti-gravity pouring are arranged on cross-shaped cross points of the transverse pouring gates, annular dead heads are correspondingly arranged at the top end of the barrel-shaped ZL205A alloy casting, and the cross-shaped annular dead heads are arranged at the top end of the barrel-shaped ZL205A alloy casting. The dead heads are connected with all the gap pouring gates, a chilling block is arranged between the two gap pouring gates corresponding to the outer side of the cylindrical ZL205A alloy casting, a chilling block is arranged at the bottom of the bottom end flange, a chilling block is also arranged at the bottom of the top end annular flange, and a gap pouring system is formed. According to the method, anti-gravity pouring molten metal is comprehensively utilized for stable mold filling, sequential solidification feeding is conducted under the gravity, the deformability of a casting mold is improved, and control over looseness, cracks and segregation defects of the ZL205A alloy cylindrical casting is achieved.

The invention discloses a ductile iron dead-head-free casting process which comprises the following steps: S1, a casting mold modeling step: filling cavities of an upper half casting mold and a lower half casting mold with dry mold sand before casting, and arranging a pouring system in the cavities of the upper half casting mold and the lower half casting mold; s2, nodular cast iron smelting, wherein raw materials of nodular cast iron are put into a cupola furnace to be smelted; step S3, spheroidizing and in-ladle inoculation treatment: performing spheroidizing by adopting a dam type flushing method, putting a spheroidizing agent into a ladle pit, tamping, covering the spheroidizing agent with a thin layer of silicon iron and cast iron scraps, performing in-ladle inoculation through an inoculant, and removing scum on the surface of the molten iron after the molten iron reacts stably; s4, pouring is conducted, specifically, the molten iron is poured into a sprue, and stream inoculation is conducted by adding an inoculant in the pouring process; and S5, cooling forming is conducted, specifically, after the casting is cooled and solidified, the casting is taken out, and a sand layer on the surface of the casting is taken out.

The invention belongs to but is not limited to the technical field of low-pressure casting processes, and discloses an intelligent temperature control system and method for a casting system, and integrated sensing modules are distributed according to feature areas of a casting mold and are used for monitoring temperature changes of different positions in the mold in real time; the data acquisition and processing module receives the data from the integrated sensing module, and preprocesses and stores the data; the central control module receives data provided by the data acquisition and processing module, and dynamically adjusts casting equipment and a temperature intelligent control system execution module according to preset casting process parameters and real-time data; and the execution module comprises a heating device and a cooling device and is used for adjusting process parameters of a heating channel and process parameters of a cooling channel according to an instruction of the central control system and intelligently regulating and controlling the temperature of the mold. According to the method, the temperature control accuracy can be improved, the temperature can be adjusted in time, and the purposes of optimizing the casting process, reducing defects and ensuring high-quality manufacturing of the aluminum alloy hub are achieved.

The invention discloses an aluminum alloy wheel multi-pouring-gate casting mold, method and equipment, the aluminum alloy wheel multi-pouring-gate casting mold comprises an upper mold plate and a bottom plate, an upper mold is arranged on the upper mold plate, an outer core pulling block is arranged on the outer side of the upper mold, a lower mold base is arranged on the bottom plate, a lower mold is arranged on the lower mold base, and the upper mold, the lower mold and the outer core pulling block jointly form a casting blank cavity. A transverse pouring gate matched with a product is arranged on the lower die base, a plurality of inner pouring gates communicated with a casting blank cavity are arranged on the inner side of the transverse pouring gate, a vertical pouring gate is arranged between the parting surfaces of the outer core pulling block and communicated with the transverse pouring gate and the casting blank cavity, a side pouring gate communicated to the transverse pouring gate is arranged on the outer side of the bottom plate, and the side pouring gate is communicated with the inner pouring gate. According to the structure, the transverse pouring gate, the inner pouring gate and the vertical pouring gate are used in cooperation, so that the feeding distance is greatly shortened, the feeding effect of all parts of a casting is improved, and then the casting quality is improved.

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 discloses a sand mold 3D printer for casting, which is applied to the technical field of casting molds, and is characterized in that a structural frame is arranged as a support of a structure and is lifted to a horizontal height convenient to use, a sand supply device is used for extracting sand, and the sand is injected into a sand shakeout device; when the sand material is fed, the sand material is guided by the sand material hopper with a larger area, so that the material is not easy to scatter, then the sand material is guided into the sand storage box, and the arranged stirring shaft continuously rotates on the inner side of the sand storage box and is matched with the spiral blade on the outer side of the stirring shaft to continuously stir the sand material, so that the sand material continuously keeps moving; the adhesive spraying device is arranged in the sand hopper and is relatively uniform in the sand hopper, meanwhile, the effect of smashing caked sand is achieved, the situation that the structure is blocked is avoided, and during manufacturing, the molding box moves to the bottom of the structural frame, and then the adhesive spraying device moves along the horizontal guide rail.

The utility model discloses a valve casting forming mold, which belongs to the field of valve production and comprises a support column, a support plate fixedly connected to the top of the support column, a lower mold arranged at the top of the support plate, a mold closing mechanism arranged above the lower mold, a demolding mechanism arranged at the bottom of the lower mold, a bottom plate and a plurality of side plates, the bottom plate is fixedly connected to the top of the supporting plate, the side plate is slidably connected to the top of the bottom plate, and adjusting mechanisms are arranged on the periphery of the lower mold. The device has the beneficial effects that the adjusting mechanism is arranged and comprises a connecting rod and an extension rod, the ends, close to each other, of the connecting rod and the extension rod are both in a wedge shape, an electric push rod is used for driving a transverse plate to drive an ejector rod to move upwards, and when a valve casting is ejected out, the connecting rod can drive side plates to move in the direction away from each other under driving of the extension rod; the gap between the side plate and the valve casting is enlarged, friction between the side plate and the valve casting is reduced, and the quality of the valve casting is prevented from being affected.

The invention relates to the technical field of casting molds, and discloses a large GIS shell metal mold low-pressure casting mold which comprises an equipment fixing lower mold plate, a pressing mechanism, a mold body, an equipment movable upper mold plate, a movable mold plate and a casting system. The mold body is fixedly connected to the middle of the upper surface of the equipment fixing lower mold plate, the movable mold plate is installed on the upper surface of the mold body, a pouring gate is formed in the center of the lower surface of the equipment fixing lower mold plate, and the inner surface of the pouring gate is sleeved with a sprue bush. The movable mold plate comprises an equipment movable left mold plate and an equipment movable right mold plate which are oppositely arranged, a sand core is arranged in the mold main body, the casting system is arranged in the sand core, and the equipment movable upper mold plate is mounted on the upper surface of the mold main body; through cooperation of the structures, pressurization feeding can be conducted from the bottom, cooling of castings can be accelerated through metal outer mold inner cavity sand core low-pressure casting, and the technological yield of products is increased.

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.

An aluminum wheel low-pressure casting mold filling process control device belongs to the technical field of automobile hub low-pressure casting and is provided with a bottom mold, a top mold and a side mold, the top mold and the bottom mold are used in cooperation to form the upper contour of a casting, and a plurality of temperature monitoring points, pressure monitoring points and a cooling system are arranged in the upper contour. The side die is used in cooperation with the bottom die and the top die, a plurality of temperature monitoring points, pressure monitoring points and a cooling system are arranged on the side wall of the side die, and the temperature monitoring points, the pressure monitoring points and the cooling system are all electrically connected with a control system of the aluminum wheel low-pressure casting mold filling process control device. The temperature monitoring points and the pressure monitoring points are arranged, temperature distribution, pressure changes and metal flowing behaviors in the mold filling process are monitored in real time in combination with the data acquisition and analysis system, the mold active exhaust technology is further combined, the mold filling stability and consistency are ensured, and therefore the casting quality is remarkably improved, and the defect rate 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 the technical field of multi-cylinder diesel engine cylinder body casting, and discloses a multi-cylinder diesel engine cylinder body casting mold and a using method thereof.The multi-cylinder diesel engine cylinder body casting mold comprises a bottom plate, a mold body is fixedly connected to the top of the bottom plate, supporting legs are fixedly connected to the bottom of the bottom plate, a bent frame is fixedly connected to the surface of the bottom plate, and a hydraulic rod is fixedly connected to the end, away from the bottom plate, of the bent frame; a die-casting plate is fixedly connected to the telescopic end of the hydraulic rod, a through hole is formed in the bottom of the inner wall of the die, the exhaust component comprises a sliding frame, the inner wall of the sliding frame is slidably connected with the surface of the bent frame, and an electric push rod is fixedly connected to the surface of the sliding frame. After a smelted material is poured into a mold, a hydraulic rod is started to push a die-casting plate into the mold for die-casting forming, and after the smelted material enters the mold, an exhaust part is started to enter the mold, and liquid in the mold is stirred through the exhaust part; and gas in the liquid is discharged in a stirring manner.

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.

Provided are: a high-quality microneedle preparation containing collagen as a main component; and a method for producing the microneedle preparation. A microneedle preparation containing collagen and one or more pH regulators as essential components; a microneedle preparation which further contains, as an essential component, one or more types of carboxyl group-containing water-soluble polymers; also provided is a method for producing a microneedle preparation, which comprises: a step for preparing an aqueous solution at 37 DEG C or less from a raw material that contains collagen and one or more pH regulators and, if necessary, one or more carboxyl group-containing water-soluble polymers, and preparing a microneedle raw material solution in which the content of collagen in the aqueous solution is 5 mass% or less; and a step for filling a mold with the microneedle starting material liquid and drying the microneedle starting material liquid.

The invention discloses an intelligent temperature control type casting mold, and relates to the technical field of casting molds. A cooling mechanism is fixedly arranged at the center position of the top face of the bearing base and comprises a cooling frame, and the cooling frame is fixedly installed at the center position of the top face of the bearing base. Wherein preheating mechanisms are fixedly arranged on the left side and the right side of the upper portion of the bearing base correspondingly, each preheating mechanism comprises a preheating frame, and the preheating frames are fixedly installed on the left side and the right side of the top face of the bearing base. According to the intelligent temperature control type casting mold, in the combining process of the upper mold body and the lower mold body, through overturning of the preheating mechanism, the mold cavities on the upper side and the lower side are heated, the situation that the temperature difference between the mold cavities and materials is too large, and the service life is affected is avoided; and cracks caused by rapid cooling are avoided, and the casting forming precision and the temperature control effect are improved.

The invention relates to the technical field of metal casting, and discloses an aluminum alloy wheel low-pressure casting mold and a casting method.The aluminum alloy wheel low-pressure casting mold comprises a top mold, a side mold and a bottom mold, the top mold is provided with a top mold core, the top mold core comprises a left mold core, a right mold core, a front mold core and a rear mold core which are alternately arranged in the circumferential direction, and the left mold core and the right mold core are in sliding connection; first wedge-shaped faces are arranged on the left-right mold core and the front-back mold core, dovetail grooves are formed in the first wedge-shaped faces in the vertical direction, a center sliding block used for adjusting the top mold core is further included, dovetail protruding blocks corresponding to the dovetail grooves are arranged on the center sliding block, and the dovetail protruding blocks and the dovetail grooves are matched in an inserted mode and connected in a sliding mode. According to the method, the shape of the wheel blank rim is thickened without considering the draft angle, the operation of removing the thickened part of the rim through subsequent machining turning to form the concave rim is omitted, the workload of the machining procedure is reduced, the production efficiency is guaranteed, and the metal utilization rate is increased; meanwhile, the problem that internal defects of the wheel blank are exposed is avoided, and the wheel quality is guaranteed.

The utility model discloses an automobile steering wheel die-casting die which comprises a workbench, the top of the workbench is fixedly connected with an installation box, the top of the installation box is connected with a female die in a penetrating mode, and a cooling mechanism is arranged on the female die. The cooling mechanism comprises two annular cooling sleeves fixedly arranged on the outer wall of the female die in a sleeving mode. According to the automobile steering wheel die-casting die, the four sides and the bottom of the female die can be covered through the arranged cooling mechanism, so that the heat exchange range of the female die can be widened, the cooling efficiency of the female die is improved, and follow-up demolding is facilitated; and meanwhile, a semiconductor chilling plate and a cooling fan are matched for use, so that cooling liquid circularly flowing in the coiled pipe can be cooled, the low-temperature cooling liquid can continuously flow in an annular cooling sleeve and a backflow pipe, the female die can be conveniently cooled, and the use effect is better.

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 invention discloses a foundry sand unloading auxiliary device, and relates to the technical field of foundry sand unloading. Comprising a mold feeding section, a turnover sand discharging section and a mold discharging section, a sand discharging assembly is arranged below the turnover sand discharging section, the mold feeding section and the mold discharging section are used for conveying a casting mold, and the turnover sand discharging section and the sand discharging assembly are used for conducting turnover discharging and casting sand separation on the casting mold correspondingly; the casting mold is positioned, so that the casting mold is separated from the conveying wheel, the casting mold is overturned through the overturning roller, complete blanking of casting sand and castings is realized under the action of gravity and vibration, the labor intensity of personnel is greatly reduced in the whole process, and the sand unloading efficiency is improved; according to the casting sand separation device, the separation mechanism is arranged over the overturning roller, a casting and casting sand are separated, floating sand on the surface of the casting is cleaned through the blowing head and the cleaning brush, caked casting sand is pulverized through the combined action of the discharging roller set and the crushing filter screen at the bottom, and separation of the casting sand is better completed.

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 relates to the technical field of alloy processing, in particular to a long-service-life elastic titanium-copper alloy for a VCM elastic piece and a preparation method thereof.The preparation method comprises the following steps that firstly, raw materials including 55%-65% of titanium, 30%-25% of copper, 10%-8% of aluminum, 3%-1% of zinc and 2%-1% of magnesium are weighed according to the mass percent; 2, the raw materials are put into a vacuum furnace to be melted, and a liquid melt is obtained; thirdly, the melt is poured into a casting mold for casting, and a blank is obtained; according to the method, the change of the state of the blank can be responded in real time by calculating the influence of the rolling times and the thickness change of the blank on the rolling control parameters, so that the rolling process can be flexibly adjusted according to the actual situation, the adaptability during machining is improved, and the rolling speed is improved when the rolling times are gradually reduced along with the reduction of the rolling times of the blank. The rolling temperature, ratio, speed and pressure are reduced, excessive deformation and damage of blanks can be effectively prevented, and the quality of final products, namely the elastic life of the alloy, is improved.