1254 results about "Precision casting" patented technology

The invention relates to the technical field of machine tool casting detection, and discloses an automatic detection system for surface defects of machine tool precision castings. The system comprises a surface information acquisition core module, a first defect identification core module, a second defect identification core module and a defect type fusion core module. The surface information acquisition module is used for synchronously acquiring real-time optical images and process parameter data in production aiming at the surface of the casting part, and constructing a defect diagnosis characteristic spectrum and an auxiliary text according to the real-time optical images and the process parameter data; the first defect recognition module inputs the atlas and the auxiliary text into a pre-training double-flow convolutional neural network to generate a first classification result of defect types; a second defect identification module extracts defect mechanism characteristic values from the atlas and matches the defect mechanism characteristic values with a pre-stored defect mechanism knowledge base to obtain a second classification result; and the defect type fusion module fuses the two types of results to determine a target defect type. The system solves the problems of single detection information and identification deviation in the prior art, improves the detection accuracy and real-time performance, and meets the requirements of different production scenes.

The invention relates to the technical field of new energy aluminum alloy precision casting multi-modal quality monitoring, in particular to a new energy aluminum alloy precision casting multi-modal quality monitoring device and method. According to the technical scheme, the new energy aluminum alloy precision casting multi-mode quality monitoring device comprises a quality monitoring device body, an infrared thermal imager probe, a germanium single crystal protection lens, an integrated spectrometer probe debugging port, an acoustic detection microphone array and a honeycomb acoustic shielding cover. An infrared thermal imager probe is arranged on one side of the quality monitoring device main body, and a germanium single crystal protection lens is arranged on the outer side of the infrared thermal imager probe; synchronous acquisition and fusion analysis of multi-physical field data are realized by integrating six modes of spectrum, infrared thermal imaging, vibration, machine vision, acoustics and pressure deformation, and meanwhile, when the shrinkage risk is predicted by the infrared thermal imaging, a die-casting process compensation mechanism is automatically triggered to kill defects in the germination stage, so that the defect rate is greatly reduced.

The invention provides a casting deformation compensation method based on point cloud, and belongs to the crossing field of three-dimensional digital detection and precision casting technology, and the method comprises the steps: carrying out the Gaussian filtering and edge point detection of a casting point cloud, sampling an edge point detection result to obtain a source point cloud, registering the source point cloud to a template point cloud coordinate system of a casting through ICP registration, and obtaining a point cloud coordinate system of the casting; obtaining an initial registration point cloud; respectively acquiring a registration feature point set and a template feature point set of the initial registration point cloud and the template point cloud by using SIFT, acquiring a rough matching pair set according to the feature point distance, and performing robust matching on the rough matching pair set to obtain a fine registration point cloud; performing deformation compensation on the fine registration point cloud based on local affine transformation and multi-scale deformation mapping to obtain a final registration point cloud; dividing the final registration point cloud into a rigid layer point cloud and a non-rigid layer point cloud; and transforming the final registration point cloud by using the global transformation matrix to obtain a compensation point cloud. The deformation compensation precision and efficiency of the casting can be effectively improved.

The invention provides a preparation method of a ceramic core for titanium alloy graphite mold casting. The preparation method comprises the following steps: step 1, designing a wood mold; step 2, wood pattern mold processing; thirdly, paint spraying is conducted on the wood pattern mold; fourthly, a release agent is sprayed to the wood mold; step 5, forming a wood module and sealing wax; sixthly, grouting and sand spraying are conducted on the working face of the wood pattern mold to prepare a contact face layer and a reinforcing layer; step 7, demolding; and step 8, roasting. The wood mold is adopted as the mold, the wood mold has the advantages of being low in preparation cost, reusable, certain in strength and the like, the production efficiency can be improved when multiple pairs of wood molds are used at the same time, and the precision of the ceramic mold core is ensured due to the fact that the wood mold does not deform due to gravity and self-weight and avoids shrinkage deformation. The core cleaning efficiency of the prepared ceramic core is improved, cold shut and flow marks of a casting after core removal can be obviously improved, the surface roughness reaches Ra6.3 microns, and the requirement for titanium alloy precision casting can be met.

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 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 preparation method of a low-cost high-performance TiAl alloy engine blade, relates to the technical field of TiAl alloy preparation, and provides a method for preparing the TiAl alloy blade by combining precision casting and vacuum isothermal forging. The process route comprises the steps of prefabricated blank smelting and precision casting, annealing heat treatment, vacuum isothermal forging of a blade final forging piece, heat treatment and blade machining, and compared with a cast blade, the mechanical property is remarkably improved, and the yield is also remarkably increased; compared with a traditional forged blade, the manufacturing cost is greatly reduced due to the fact that the process is greatly shortened; compared with ingot casting / rod casting and high-temperature forging, the method has the advantages that the material utilization rate and the mechanical property are improved, and the manufacturing cost can be reduced; in addition, compared with forging under the atmospheric condition, the problem of severe oxidation does not exist, and the material utilization rate and the mechanical property are obviously improved. Therefore, the method provided by the invention has important commercial value.

A method for preparing a ceramic shell for precision casting. The method comprises: S1, smearing the exterior of a wax pattern with corresponding layers of ceramic shell slurry layer by layer, wherein a ceramic shell to be dried is obtained at a corresponding layer each time after the smearing of the ceramic shell slurry is completed; S2, putting said ceramic shell at each corresponding layer into a vacuum rapid drying system for a vacuum rapid drying treatment, and after the drying of the ceramic shell at the layer is completed, smearing same with a subsequent layer of ceramic shell slurry, wherein during the vacuum rapid drying treatment, image data of the ceramic shell to be dried is first acquired and subjected to model structure analysis so as to obtain the position, orientation and depth of a deep hole in the ceramic shell to be dried, same are sent to a fan set control module, the fan set control module performs fan set control analysis according to the position, orientation and depth of the deep hole in the ceramic shell to be dried and controls the starting and stopping and / or control parameters of each fan set according to an analysis result, and the drying time of all portions of the integral ceramic shell to be dried tends to be identical by means of vacuumizing a vacuum drying chamber and / or restoring the chamber pressure and controlling the starting and stopping and / or control parameters of all the fan sets; and S3, waiting for the completion of the drying of the ceramic shells at all the layers to obtain a ceramic shell for precision casting. On the basis of retaining the inherent advantages of a thick-slurry ceramic shell, the preparation method effectively overcomes problems present in the thick-slurry ceramic shell.

The invention discloses an automatic production process for a metal soup spoon, and relates to the technical field of soup spoons. The automatic production process for a metal soup spoon, by manufacturing a tubular handle portion, has higher strength than an existing flat handle, and the tubular handle portion is not easy to be deformed during transportation and use. At the same time, a split spoon head and a tubular handle portion are adopted, and the spoon head can be stamped and stretched separately, which can not only avoid the problem that the interference between the handle and the mold leads to only shallow stretching of the spoon head and the inability to make a deeper hemispherical spoon head, but also facilitates the positioning and placement of round plates, and does not require manual holding of the handle for stamping and stretching, effectively avoiding safety hazards. The spoon head and the tubular handle portion are connected by a handle head precision casting, and the handle head precision casting is cast by casting, and is bent after molding, with a certain curvature, avoiding the existing trouble of bending the connection between the spoon head and the handle, and avoiding the situation that it is easy to break during the bending process.

The invention relates to the technical field of precision casting, and discloses a high-precision control method for stainless steel castings, which comprises the following steps: preparing raw materials, recording component characteristics of the raw materials, designing a formula proportion of the raw materials, carrying out pouring process design, and setting a parameter control system in each link of pouring, according to the shape of the needed stainless steel casting, mold design and manufacturing and mold quality control are carried out, grinding tool design parameters are recorded, a stainless steel casting solidification process simulation model is established according to raw material component characteristics, a raw material formula proportion, a designed pouring process and the mold design parameters, and the casting solidification process is simulated in the model. The method comprises the following steps: predicting a defect area in a casting production process, carrying out advanced prevention and optimization treatment on the defect area according to the predicted defect area in the casting production process, strengthening a refining degassing operation in a casting process, further carrying out a metal solution purification step after refining degassing, and demolding the casting, and the mold is cleaned, checked and maintained in time.

The invention relates to a precision casting part surface defect automatic detection system, and relates to the casting part detection equipment technical field, the precision casting part surface defect automatic detection system comprises a workbench, the workbench is provided with a positioning assembly, a frame body, a detection mechanism, a marking assembly and a driving mechanism, the positioning assembly is used for fixing a to-be-detected product on the workbench; the frame body is connected to the workbench and provided with a standard casting part curved plate, and the curved plate and a to-be-detected product are oppositely arranged in parallel. The detection mechanism comprises a telescopic pipe assembly, when the surface of the to-be-detected product has defects, the length of the telescopic pipe assembly changes accordingly, the marking assembly comprises a first liquid containing box and a second liquid containing box which contain marking liquid of different colors, and when the telescopic pipe assembly stretches and retracts, the marking assembly can control the marking liquid of different colors to mark the defect positions of the to-be-detected product; the driving mechanism is used for driving the telescopic pipe assembly to move in the horizontal direction. The special-shaped curved surface casting part detection device can accurately detect the special-shaped curved surface casting part, and has the effect of marking the surface defects of the casting part.

The invention provides a machine learning-based pressure-regulating precision casting gating system design method, which comprises the following steps of: collecting pressure-regulating precision casting data to form a database; screening the parameters in the database to obtain a principal component influence factor; pouring process independent variables are input, and a pouring system model is output based on the principal component influence factors and the pressure maintaining condition in the solidification process; based on the gating system model, anti-gravity pressure regulating casting mold filling simulation is conducted through analogue simulation software, and the porosity is counted according to the simulation result; and comparing the gating system model with a gating system in a database, if the porosity is the minimum value, determining that the gating system model is a target gating system, and exiting the whole process, otherwise, re-optimizing the gating system model. For complex parts in different shapes, an optimal pouring system can be provided, the mold filling capacity in the pouring process is improved, and the forming quality and the casting yield of castings are improved.

The invention discloses a preparation method of a high-purity corundum crucible for high-temperature alloy smelting, belongs to the technical field of precision casting refractory material forming preparation, and aims to solve the problems that an Al2O3 crucible is easily eroded by high-temperature alloy, impurities are generated during high-temperature alloy smelting, and the Al2O3 crucible is difficult to be suitable for high-temperature alloy smelting. According to the technical key points, 60%-70% by mass of aluminum oxide Al2O3 powder and 30%-40% by mass of silicon oxide SiO2 powder are added into a ball milling tank to be subjected to ball milling treatment, the aluminum oxide Al2O3 powder comprises fine powder mixed powder with the particle size being 5-50 micrometers, medium powder mixed powder with the particle size being 50-300 micrometers and coarse powder mixed powder with the particle size being 0.4-0.5 mm, and the coarse powder mixed powder is mixed with the medium powder mixed powder with the particle size being 2-5 micrometers. A binder polyvinyl alcohol (PVA) solution is added into the mixed powder for granulation operation, after the mixed material is aged, the mixed material is pressed in a cold isostatic pressing mode, a crucible preformed blank is obtained and sintered at different temperatures after being dried, and the crucible is obtained. The method has the effect that the sintered high-purity corundum crucible has excellent high temperature resistance and thermal stability at the same time.

The invention discloses a vacuum negative pressure vibration assisted precision casting forming method. The method comprises the steps of model preparation, sand box and dry sand pretreatment, layered vibration sand filling, film covering vacuumizing, molten metal smelting and purification treatment, negative pressure vibration pouring, pressure maintaining solidification, segmented temperature control and pressure relief box opening and multi-stage cleaning aftertreatment. The core of the method is that mechanical vibration and a vacuum negative pressure technology are deeply coordinated and penetrate through the whole process of modeling, pouring and solidification, and meanwhile, a series of fine control means such as dry sand accurate pretreatment, molten metal rotary blowing degassing and instantaneous inoculation, stepped negative pressure control, temperature-related segmented pressure relief and two-stage shot blasting cleaning are matched; through dynamic cooperation of vibration and negative pressure, the sand mold compaction uniformity, the molten metal mold filling capacity and the solidification feeding effect are remarkably improved, the casting defects of air holes, shrinkage porosity, insufficient pouring and the like are effectively reduced, and the internal density, the size precision and the surface quality of a casting can be remarkably improved.

The invention relates to the field of precision casting, and particularly discloses a gas turbine blade centre hole depth measuring method, which comprises the following steps: analyzing a centre hole section structure and a magnetic bead contact state size through UG drawing software, performing sectioning analysis on a gas turbine blade centre hole axis surface, performing tangent constraint on a magnetic bead contour and a centre hole inner contour, and determining the depth of the centre hole; measuring the distance from the center of the magnetic bead to the inner end of the centre hole; putting the magnetic bead into the centre hole of the blade, measuring the center position of the magnetic bead by adopting a three-coordinate measuring instrument, and calculating the actual centre hole depth of the blade by combining the dimension guarantee of the three-coordinate measuring instrument on the profile tolerance of the inner wall of the centre hole; according to the method, by means of the tangent constraint of the magnetic bead and the centre hole in the blade tenon, the hub degree of the magnetic bead is measured through the three-coordinate measuring instrument, the depth of the centre hole is calculated, the depth of the centre hole can be accurate to 0.01 mm, the measurement precision is high, and the precision of follow-up positioning and clamping machining of the gas turbine blade through the centre hole is guaranteed.

The invention discloses repair welding equipment for a high-pound-level valve after precision casting, which belongs to the technical field of valve repair welding, and is technically characterized in that the repair welding equipment comprises a workbench, and limiting, clamping and fixing of the valve can be completed through an arranged positioning and clamping mechanism, so that follow-up sealing performance testing and follow-up repair welding processing are facilitated; the automatic sealing mechanism is arranged, so that automatic clamping and sealing treatment of the valve can be realized, the time and errors of manual operation are reduced, the detection speed and accuracy are improved, and the detection efficiency is improved. By means of the station switching mechanism, the valve can be switched from a station for detecting air tightness to a station for repair welding machining, repair welding machining can be conducted without manually disassembling a clamping and positioning tool on the outer side of the valve again, the welding machining efficiency of repair welding machining is greatly improved, the production period is greatly shortened, the production cost is reduced, and the production efficiency is improved. The device has the advantages of being convenient for air tightness test and repair welding processing and high in working efficiency.

The invention relates to the field of precision casting, and discloses a precision casting process for a stainless steel impeller for nuclear power, which comprises the following steps of: S1, pressing a wax mold by using an investment casting process, and connecting the wax mold into a tree shape by using a wax rod; s2, the surface of the wax mold is coated with a refractory material, dewaxing is conducted through dewaxing equipment after drying, a hollow shell is obtained, and then high-temperature roasting is conducted; s3, selecting duplex stainless steel to be smelted in an electric furnace, heating molten steel to a preset pouring temperature, and pouring the molten steel into the shell from the bottom or the side; s4, the shell is removed after being naturally cooled, and solution treatment is conducted on the impeller; s5, carrying out sand blasting, shot blasting and sand cleaning, and carrying out nondestructive inspection; wherein dewaxing equipment used in the step S2 comprises a tank body, a rotatable tray is arranged in the tank body, and a plurality of adjustable fixing clamps are arranged on the tray to meet the fixing requirements of different shells; the top of the tank body is provided with a feed port, a discharge port and an automatic sealing door, and the bottom is connected with a wax liquid collecting tank and is internally provided with a liquid level sensor; the inner wall of the tank body is provided with a heating cavity for containing heating elements, and the outer wall is wrapped with heat insulation materials.

The invention relates to the technical field of casting machining drilling, and discloses a precision casting machining drilling device which comprises a fixing ring, a multi-directional positioning mechanism, a precision casting supporting mechanism and a drilling mechanism, and supporting legs are welded and distributed at the position, close to the edge, of the bottom of the fixing ring; the multi-directional positioning mechanism comprises a rotary sliding mechanism, a positioning clamping mechanism and a driving structure, the rotary sliding mechanism is connected to the upper portion and the lower portion of the fixing ring in a limiting and sliding mode, the positioning clamping mechanism is fixedly distributed on the inner side wall of the rotary sliding mechanism, and the driving structure is connected to the left end of the upper portion of the rotary sliding mechanism; the precision casting supporting mechanism is arranged in the middle of the bottom of the fixing ring. And the drilling mechanism is arranged above the fixing ring. According to the precision casting machining drilling device, multi-angle positioning and clamping of precision castings can be achieved through the driving structure, automatic adjusting and supporting can be conveniently conducted according to the precision castings of different heights, meanwhile, the drilling depth can be dynamically adjusted in a lifting mode, and the machining precision is further improved.

The invention discloses a photosensitive resin for SLA3D printing precision casting and a preparation method thereof. The preparation raw materials comprise the following components in percentage by mass: 40 to 60 weight percent of polyether acrylate resin oligomer, 30 to 50 weight percent of polyether monomer diluent, 3 to 6 weight percent of photoinitiator, 0 to 5 weight percent of coloring agent, 0.5 to 1 weight percent of polymerization inhibitor, 0.1 to 3 weight percent of nano filler, 10 to 15 weight percent of micronized wax powder and 0.1 to 1.5 weight percent of flatting agent. According to the photosensitive resin disclosed by the invention, the nano filler is introduced, so that the resin can keep high dimensional stability, mechanical property and compatibility with a molten metal solution under a high-temperature casting condition, and high temperature resistance, high strength, high toughness and high wear resistance are achieved; and wide application of the SLA3D printing technology in the high-precision and advanced fields of aerospace, automobile manufacturing, medical instruments and the like is promoted.

The invention relates to the technical field of crack detection, in particular to a crack detection method, device and system for a precision casting. The method comprises the following steps that all-directional sound wave scanning is conducted on the precision casting, sound wave reflection signals are collected, dynamic sound wave imaging mapping is conducted, and a casting three-dimensional space voiceprint graph is constructed; performing transient abrupt change phase position calculation and casting crack space positioning on the casting three-dimensional space voiceprint graph to obtain three-dimensional space position information of casting cracks; based on the three-dimensional space position information of the casting crack, high-frequency magnetic field excitation processing is conducted on the precision casting, an amplitude change curve, a phase change curve and a frequency change curve are obtained through calculation, and crack three-dimensional shape calculation is conducted according to the amplitude change curve, the phase change curve and the frequency change curve to obtain crack three-dimensional shape characteristics. According to the invention, rapid and accurate precision casting crack detection is realized.

The invention relates to the technical field of precision casting of turbine blades, in particular to a ceramic core for a nickel-based superalloy isometric crystal hollow turbine blade and a preparation method of the ceramic core. The ceramic core is prepared by mixing refractory powder and a paraffin-based plasticizer and then sintering the mixture at a high temperature, and the mass ratio of the refractory powder to the paraffin-based plasticizer is (75-85): (15-25); the refractory powder is composed of quartz glass powder, alumina powder and natural crystalline flake graphite, and the mass ratio of the quartz glass powder to the alumina powder to the natural crystalline flake graphite is (72-77): (20-25): (0.5-3); the paraffin-based plasticizer is prepared from refined paraffin, beewax and low-density polyethylene, and the mass ratio of the refined paraffin to the beewax to the low-density polyethylene is (40-50): (40-50): (5-10). The natural flake graphite is creatively added into the raw materials of the ceramic core, so that the flowability of slurry is improved, the high-temperature bending strength of the ceramic core is improved, and the depoling performance of the mold core is improved.

The invention provides a fracture-resistant and tensile cement-based material based on a bionic structure and a preparation method thereof, and belongs to the field of building materials.The cement-based material comprises a plurality of cement-based slurry layers stacked layer by layer and fiber materials scattered in the cement-based slurry layers, the fiber material comprises at least one of steel fibers and non-metal fibers; the arrangement directions of the fiber materials in the same cement-based slurry layer are the same, and the projection included angle theta of the arrangement directions of the fiber materials in the adjacent cement-based slurry layers meets the following conditions that theta is larger than or equal to 30 degrees and larger than or equal to 0 degree or theta is larger than or equal to-30 degrees and smaller than or equal to 0 degree. According to the method, a discontinuous stacking structure simulating the nanoscale of a biological shell is applied to the structural design of a cement-based material, common Portland cement is adopted as a base material, discontinuous fibers are adopted as an auxiliary reinforcing material, and the bionic structure is formed through precise pouring forming; and the cement-based material has excellent mechanical properties such as ultrahigh pressure resistance, fracture resistance and tensile strength.

The invention provides a preparation method of a sand mold forming mold shell for titanium alloy precision investment casting, which comprises the following steps: S1, carrying out sand mold 3D printing on a three-dimensional sand mold to obtain a sand mold model; s2, a 3D printing spray gun is adopted for spraying the sand mold, the total spraying thickness is controlled to be 0.5-1 mm, low-temperature wax is adopted as a spraying raw material, and the model is K512; s3, a mold shell is prepared; s4, roasting and sand removal; the step S2 specifically comprises the following steps that S21, low-temperature wax is placed in a spray gun to be preheated, and the preheating temperature ranges from 50 DEG C to 60 DEG C; and S22, the temperature of the spray gun is increased to 60-120 DEG C, and a wax mold is sprayed on the sand mold. According to the preparation method, the 3D printing sand mold can replace a wax mold, and the problems of shrinkage deformation, shrinkage depression and the like of the wax mold are avoided; the spraying gun is used for spraying the 0.5-1 mm wax mould on the sand mould, the thickness is accurate and controllable, the sand mould model obtained by spraying the wax mould is smooth in surface and free of wax marks, the surface quality and the size precision of the titanium alloy casting can be effectively improved, manual finishing is not needed, and the manufacturing cost is low.

The invention discloses a method for forming a complex and compact cavity precision casting based on a 3D printing ceramic core, and belongs to the technical field of precision casting. The ceramic core of the whole casting inner cavity structure is directly formed through the 3D printing technology, and the number and types of tools and cores needed during casting wax mold forming can be reduced; errors generated during splicing of the mold cores are fundamentally eliminated, the machining precision is improved, meanwhile, the machining difficulty can be reduced, particularly forming of fine structures such as narrow edges and sharp corners is facilitated, the ceramic mold core and a casting shell can form an assembly together, the inner cavity structure of a casting does not need to be manufactured during shell manufacturing, and the production cost is reduced. And the difficulty during shell manufacturing is greatly reduced, the problem of refractory material accumulation or cavity in the deep groove and narrow groove part in the shell manufacturing process is avoided, the risks of looseness and steel leakage of the deep groove and narrow groove part of the casting are reduced, and technical support is provided for achieving automatic shell manufacturing of the high-integration complex compact cavity precision casting.

The utility model discloses a precision casting furnace, relates to the technical field of casting furnaces, and aims to solve the problems that an existing casting furnace is lack of an auxiliary limiting mechanism for a crucible, the placement position of the crucible is inconvenient to control, and materials are heated unevenly. According to the technical scheme, a base for supporting and limiting a containing container is arranged in a heating cavity, a sliding way is formed in the base, a limiting mechanism is arranged between a sliding seat and the base, and a groove and a limiting rod are arranged on the sliding seat; a sliding seat is arranged on the base, a clamping mechanism for a containing container is arranged on the base through a mounting seat, the clamping mechanism corresponds to the sliding seat in position, the base is arranged in the heating cavity, the containing container is placed on the sliding seat, a limiting mechanism is arranged between the sliding seat and the base, and through the arrangement of the limiting mechanism, the containing container can be clamped through the clamping mechanism. And a worker can conveniently determine the placement position of the containing container, so that the containing container is located in the middle of the heating cavity, materials in the containing container are uniformly heated, and the heating time is shortened.

The invention relates to the technical field of titanium alloy investment precision casting, and particularly provides a titanium alloy multistage deep blind hole investment casting method which comprises the following steps: designing an exhaust hole and a slag removal hole; establishing a model; assembling and welding; soaking the surface layer in a vacuum negative pressure environment, continuously vacuumizing, deflating after soaking, taking out the module, and rotating to uniformly control the slurry; preparing a surface layer; performing segmented grouting on the deep blind hole; making a shell from a back layer; roasting and molding; washing and drying; pouring is conducted; shell cleaning and sand blasting; sealing and welding the process holes; and performing stress relief annealing. And a dynamic vacuumizing means is adopted, and a vacuumizing device is always kept in an open state, so that the compactness of a surface layer is improved, and burrs of a casting are reduced. Through vacuum dynamic slurry immersion, segmented grouting and collaborative design of the exhaust hole and the slag removal hole, investment precision casting forming of the high-precision oil pump shell can be supported, the shell manufacturing efficiency of the multi-stage deep blind hole is improved, and the filling defect rate is reduced.

The invention relates to the technical field of casting, in particular to vehicle gearbox casting equipment which comprises a support, a supporting plate used for placing a sand casting mold is fixedly connected to the support, a fixing mechanism used for fixing the sand casting mold is arranged above the supporting plate, and a driving mechanism is connected with a material guiding mechanism arranged on one side of the supporting plate. Through a rigid limiting structure of the square fixing frame and the supporting plate, impact of molten metal is resisted, displacement and collapse of a sand mold are avoided, inert gas is synchronously injected to stabilize the sand mold, the defects of sand holes and cold shut are reduced, the casting precision of key parts such as a gearbox bearing hole and an oil duct is improved, the inclusion and porosity are reduced, and the air tightness qualification rate of a shell is improved; the driving mechanism controls lifting, material pushing and vibration demolding in a linkage mode, the production period is shortened, the productivity is improved, the labor cost is reduced, meanwhile, molding sand can be recycled, emission is reduced, green manufacturing is met, and an efficient, high-quality and environment-friendly solution is provided for precise casting of the gearbox shell.

The invention relates to the technical field of precision casting, and discloses a wax pattern module combination device and a combination method thereof.The wax pattern module combination device comprises a rack and further comprises idler wheels arranged on the rack and used for assisting the rack in moving; the lifting mechanism comprises a working platform which is fixedly arranged on a sliding plate and is used for placing a lower die; the rotating mechanism is assembled on the machine frame, and a gear transmission set included in the rotating mechanism is connected with a connecting piece used for being connected with an upper die; the lifting mechanism and the rotating mechanism are matched with each other, so that the wax mold can be accurately lifted and adjusted and can rotate by 360 degrees, and manual mold turning is not needed. The machine frame is further provided with a purification mechanism capable of discharging wax smoke generated when the wax mold is assembled, the purification mechanism is matched with an air inlet mechanism arranged on the machine frame to conduct air injection on the wax mold so that the temperature of the wax mold can be maintained at a normal value, shrinkage of the wax mold can be controlled, and meanwhile the effect of maintaining balance of internal pressure and external pressure of a workshop is achieved.

The invention discloses a precision casting manufacturing roasting feeding device which comprises a base, and a sliding seat is transversely arranged on the base in a sliding mode. According to the feeding device, through the arrangement of the rail, the rail wheels and the second driving mechanism, the feeding device can be driven to move along the rail, then feeding can be conducted on multiple pieces of production equipment at the same time through the single feeding device, and through the arrangement of the second driving mechanism, the height of a feeding pipe can be controlled according to the heights of different pieces of equipment; the spiral feeder rotates with the supporting frame as a fulcrum, when the feeding pipe is lifted, the whole feeding pipe moves towards the equipment, when the feeding pipe descends, the feeding pipe is far away from the equipment, the height of the feeding pipe can be adjusted according to the height of the equipment, and meanwhile the feeding pipe can be driven to move synchronously. According to the roasting feeding device for precision casting manufacturing, the feeding pipe is lifted, dislocation of the feeding pipe and a feeding port of equipment after lifting is avoided, feeding can be conducted on the equipment at the same time, and meanwhile the position of the feeding pipe can be adjusted according to the height of the equipment.

The utility model relates to a turnover device of a casting with a shell for precision casting, which comprises a turnover frame, the turnover frame comprises two vertical beams, a transverse bottom beam is fixedly connected between the lower parts of the vertical beams, an upper group of transverse supporting beams and a lower group of transverse supporting beams are fixedly connected between the upper parts of the vertical beams, the bottom ends of the vertical beams are fixedly connected with longitudinal supporting plates, and wheels are respectively arranged at the front end and the rear end of each supporting plate. A plurality of groups of transversely distributed connecting frames are inserted between the supporting beams at the upper parts of the vertical beams; a vertical handle is arranged on one side of the turnover trolley frame, horizontal transverse guide shafts are formed at the upper end and the lower end of the handle respectively, and the guide shafts are fixed to the vertical beams of the turnover trolley frame in an inserted mode and inserted into the upper portion and the lower portion of the connecting frame respectively. The suspension bracket on the circulating device is provided with an upper layer and a lower layer and can be hidden in the frame in a rotating manner; and the device can also be rotated and unfolded for hanging castings for turnover.