18 results about "Lost-wax casting" patented technology

The invention provides a complex runner impeller pump machining method based on a wax pattern model, which comprises the following steps: calculating geometric width and curvature change values of a runner according to casting deviation estimation data, and if the change values exceed a design tolerance range, correcting boundary conditions of an initial wax pattern model through an iterative optimization algorithm, and determining optimized wax pattern model data; a numerical control machining path is generated after optimized wax pattern model data is obtained, the feeding speed and cooling parameters of a cutter are dynamically adjusted in combination with real-time feedback information of a temperature sensor, and a precision machining instruction sequence is obtained; simulating a virtual casting process from the precision machining instruction sequence, judging whether the geometric consistency of the flow channel meets the fluid efficiency requirement or not, and if not, backtracking to a deformation prediction data stage for recalculation to obtain a final casting parameter set; and an automatic pouring system is driven through the final casting parameter set to execute lost wax casting, real-time dimensional deviation is monitored, the position of a mold is automatically calibrated, and a high-precision complex-runner impeller pump casting is obtained.

The present invention belongs to the technical field of lost wax casting, and specifically is a lost wax casting shell making device, comprising a machine base; two fixed columns are fixedly connected to the top of the machine base; a drying box with multiple output end electric heaters is provided to dry and solidify the wax trees that are suspended and transported, so as to achieve the effect of non-stop drying and shell making of the wax trees on the barbecue grill, thereby reducing the situation where the workpiece is not dried and solidified after sanding, resulting in difficulty in firm adhesion of powder on the surface of the wax mold; the wax trees are uniformly dried synchronously from different angles through the multiple output ends of the electric heater, and symmetrical air supply at the four corners can form a three-dimensional circulating airflow, avoiding uneven drying caused by unilateral air supply, and preventing the shell from generating stress cracks due to excessive local drying, thereby improving the effect of drying and solidifying the wax trees; the method of hanging, conveying, drying and solidifying the wax trees composed of the barbecue grill by a ring conveyor can avoid adhesion of the wax trees to the contact surface, thereby ensuring drying efficiency and reducing the risk of wax mold deformation.

This invention belongs to the field of numerical simulation of investment casting, and relates to a high-precision numerical simulation method, system, and product for the wax pattern filling process of investment casting. The method includes updating boundary conditions and determining the time step Δt; solving for the flow field, temperature field, and updating the viscosity based on the known field quantities of the current time step; the known field quantities include the flow field and temperature field obtained in the previous time step; performing interface tracking based on the flow field to obtain the free surface between the wax and air, thereby distinguishing between filled and unfilled areas; determining whether to continue time progression according to a preset filling ratio; if time progression is stopped, outputting the results of the flow field, temperature field, viscosity field, and the change of the free surface over time during the entire wax pattern filling process.

1. The name of the design product: gypsum vacuum casting integrated machine. 2. The use of the design product: for jewelry lost wax casting integrated machine. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view. 5. The design product is not common from the bottom view, so the bottom view is omitted.

The utility model relates to a shot blasting tool for casting an impeller pump shell by a lost wax method. The shot blasting tool is characterized by comprising a positioning shaft, a rotary tray, a limiting unit and a driving module, according to the utility model, the rotary tray structure of which the direction can be manually adjusted is adopted to support the impeller pump shell for shot blasting treatment, so that the angle of the impeller pump shell can be adjusted, and a treatment omission area is avoided; besides, a limiting guide groove is formed in the surface of the rotary tray, a spring is connected with a limiting check block, the limiting check block is tensioned through elastic potential energy of the spring, the end of the limiting check block can penetrate through a center position hole of the impeller pump shell, and the edge of the center position hole of the impeller pump shell is tensioned and limited. And it is guaranteed that the impeller pump shell is in a stable state in the shot blasting treatment process.

To provide a method for manufacturing a lost wax pattern capable of easily manufacturing the lost wax pattern.SOLUTION: The manufacturing method includes a designing step of designing a designed lost-wax pattern 21 having a provisional rest portion 211 having a size to form a gap S with respect to an inner peripheral wall 10A of a rest seat image 13A formed on a model image 131A, based on the model image 10A displayed on a display 4, a shaping step of three dimensionally shaping the designed lost-wax pattern 21, a hardening step of hardening the designed lost-wax pattern 21, and a correcting step of correcting the provisional rest portion 211 to a rest portion 201 suitable for a rest seat 13 by filling the gap S between the provisional rest portion 211 and the rest seat 13 with wax 22 in a state where the designed lost-wax pattern 21 is fitted to a model 10, thereby completing a lost-wax pattern 20.SELECTED DRAWING: Figure 11

The application discloses a runner wax mold, a wax mold shell assembly and a thin product lost wax casting method. The runner wax mold is internally provided with a cavity, and the runner wax mold is provided with a pore communicating the cavity with an external environment, and the pore is sealed by bonding wax with a lower melting point than the runner wax mold. In the thin product lost wax casting method, firstly, a product wax mold and the runner wax mold are prepared; then, the runner wax mold is connected with at least one group of product wax molds to form a wax tree; then, ceramic slurry is coated on the surface of the wax tree and solidified into a ceramic mold shell; then, the wax mold shell assembly is placed in a dewaxing kettle, a high-temperature environment capable of causing the bonding wax and the product wax mold to melt in sequence is arranged in the kettle, a high-pressure environment capable of causing the molten wax to flow into the cavity along the pore is arranged, and the process is continued until the wax tree is completely melted and discharged from the ceramic mold shell; finally, the thin product is cast in the ceramic mold shell. The thin product lost wax casting method can avoid the damage of the ceramic mold shell caused by the expansion of the product wax mold.

The present application relates to the technical field of investment precision casting, in particular to a wax mold, a preparation method and application of an investment casting casting. The wax mold is provided with at least one process hole, the process hole is a through hole; the height of the process hole is 15-20 mm with the wax mold as a base surface; the process hole has a flange, the thickness of the flange is 5-10 mm; the wax mold further comprises at least one blocking wax piece, the blocking wax piece is matched with the size of the process hole. The present application can effectively prevent the shell from bulging, and the process hole of the shell generated at the same time is closed during subsequent shell blocking, and the casting does not need to be welded and blocked after pouring. The poured casting has no process hole and does not need to be repaired. The purpose of controlling the bulging deformation of the photosensitive resin shell and the casting without the process hole can be achieved.

1. The name of the design product: museum bronze ware simulation production popular science interactive device. 2. The use of the design product: for bronze lost wax method manufacturing process and related knowledge popularization in museum scene. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

The utility model discloses a ceramic shell cleaning device for lost wax casting, which relates to the technical field of lost wax casting and comprises an equipment box body, an outer shell is fixedly mounted on the inner wall of the rear side of the equipment box body, the outer shell is composed of an outer net cylinder and a plurality of L-shaped connecting frames, and the L-shaped connecting frames are symmetrically and fixedly mounted at the rear end of the outer net cylinder. A cleaning assembly is fixedly installed on the outer net cylinder and composed of an annular pipe, a plurality of installation pipes, connecting pipes and water spraying nozzles, the installation pipes are fixedly installed on the annular pipe in a pairwise symmetrical mode, the connecting pipes are also fixedly installed on the annular pipe, and the water spraying nozzles are fixedly installed on the installation pipes respectively. A rotary beating assembly is installed on the equipment box and located on the inner side of the outer shell, by arranging the outer shell, the cleaning assembly and the rotary beating assembly, a ceramic shell wrapping the outer side of a casting can be efficiently smashed, meanwhile, the cleaning effect is good, and therefore the lost wax casting efficiency can be guaranteed.

The utility model aims to provide a shell-making wax mould structure, which comprises a mould head and a supporting assembly, a shunting block is arranged at one end of the mould head, the diameter of the mould head is gradually reduced towards the shunting block, the supporting assembly comprises a main column, an end block and a plurality of supporting columns, two ends of the main column are respectively connected with the shunting block and the end block, each supporting column is divided into two groups, and the supporting columns are connected with the main column. The two sets of supporting columns are located on the two sides of the main column respectively, the two ends of each supporting column are connected with the flow dividing block and the end block respectively, and the main column and the supporting columns are used for being independently or jointly connected with a plurality of wax pieces respectively. Thus, the shell making wax mold structure is suitable for mounting wax pieces of different sizes instead of being limited to a certain wax piece of a single size, and the universality is good; in addition, a plurality of wax pieces can be installed at the same time, and each wax piece can form a casting, so that a plurality of castings can be formed on the shell-making wax mold structure, and compared with shell-making and casting of a single wax piece in the prior art, the shell-making wax mold structure can effectively improve the lost wax casting efficiency.

Manufacture and use of a refractory casting core The invention relates to a method for manufacturing a refractory casting core, said method comprising the additive manufacturing of a first and a second element each incorporating a refractory powder, said first and second elements each having one or more channels, the insertion of one or more refractory rods into said channels to connect the first and second elements, and the sintering of the first and second elements. It also relates to the use of the refractory casting core obtained according to this method in a casting process. Figure for abstract: Fig. 1.

The invention discloses an excavator bucket tooth production method adaptive to different working conditions, and relates to the technical field of engineering machinery part manufacturing, the method comprises the following steps: firstly, collecting material characteristics, environmental parameters and efficiency requirements of a target working condition, and establishing a working condition-bucket tooth performance corresponding database; designing customized appearances such as plain-end exhaust grooves, cylindrical cones and thickened working surfaces according to working conditions such as soil sandy soil, low-temperature rock-containing soil and southern humid rocks, and matching customized raw materials containing nickel / chromium / molybdenum according to a ratio; through lost wax casting, targeted heat treatment and surface treatment forming, production is completed through detection, identification and packaging. The bucket tooth prepared through the method can precisely adapt to different working conditions and is excellent in mechanical property and environment resistance, the working efficiency is improved by 20.6%-34.0% compared with that of a conventional bucket tooth, the service life is prolonged by 78.6% at most, the use cost of customers can be reduced, and differential operation requirements are met.

The utility model provides sticky slurry sand pouring auxiliary equipment for a cage type blade wax mold, and belongs to the technical field of lost wax casting. Comprising a mounting support, a vibration sieve tray is movably arranged at the top of the mounting support, a first driving assembly used for driving the vibration sieve tray to reciprocate is arranged on the mounting support, and an operation space for an operator to hold a wax mold to rotate and move is formed in the position, under the vibration sieve tray, in the mounting support; a discharging hopper used for containing sand grains is arranged at the position, located above the vibration sieve tray, of the mounting support, and a first discharging valve used for limiting falling of the sand grains is arranged at the bottom of the discharging hopper. An operator can uniformly shake off the sand grains into the operation space by loading the sand grains into the discharging hopper in advance and sequentially opening the first discharging valve and the vibration sieve tray, at the moment, the operator can operate a wax mold to stretch into the operation space, the sand grains are uniformly adhered to slurry on the surface of the wax mold, and the sand pouring device has the effects of saving manpower and improving the sand pouring efficiency.

The invention discloses a plateau lost wax method gypsum precision casting process, relates to the technical field of precision casting, and aims to solve the problems of non-uniform slurry dispersion, shell cracking, high casting defect rate and the like existing in a traditional casting method in a plateau low-pressure environment. Step-by-step mixing and vacuum defoaming treatment of an organic additive and calcium sulfate hemihydrate are combined, so that the stability of the slurry is improved; a stepped temperature control drying process is adopted, temperature and humidity are regulated and controlled in stages, and directional growth of crystals in the shell is promoted; roasting and vacuum pouring technologies are combined, so that gas inclusion in molten metal is reduced; and parameters in the whole process of dispersing, defoaming, drying and pouring are monitored in real time and dynamically adjusted through an intelligent control system. Through collaborative design of a material formula, a dispersion process, a drying system and intelligent control, high-precision castings can be stably produced in the plateau environment, and the high-precision casting device is suitable for the fields such as aerospace and medical instruments with strict requirements for casting quality.

The utility model relates to an auxiliary trolley for investment casting practice teaching. The auxiliary trolley comprises a handlebar, a frame, a water tank, a faucet, a storage rack, a water tank cover, an electric heating rod, a bent pipe and universal wheels. The handlebar is used for providing a grasping point for students or teachers to push or pull the trolley; the frame is used for bearing the water tank; the water tank is used for storing water required during steam wax loss; the faucet and the bent pipe are used for discharging waste water after steam wax loss; the storage rack is used for placing and fixing a steel cup for investment casting; the water tank cover is used for protecting the steel cup for investment casting and reducing water evaporation and heat loss in the water tank; the electric heating rod is used for continuously heating water in the water tank; the universal wheels are used for achieving multi-direction movement of the trolley. Before the link of roasting the gypsum shell in the steel cup for investment casting at high temperature in investment casting practice teaching, most wax molds in the gypsum shell in the steel cup for investment casting can be melted by high-temperature steam in the box body with a relatively closed environment, and flow out from holes at the bottom of the gypsum shell; therefore, a casting training room is basically in a wax-smell-free state when the gypsum shell in the steel cup for investment casting is roasted at a high temperature, smoke dust is prevented from being discharged into the casting training room due to direct high-temperature roasting of a wax mould in the gypsum shell in the steel cup for investment casting, environmental pollution can be reduced, symptoms such as dizziness and headache of students and teachers are avoided, and the economic benefits of the students and the teachers are improved. And the physical health of students and teachers is ensured.

The invention relates to a casting core (10) comprising a main part (100) made of molybdenum or molybdenum alloy, characterized in that it comprises a coating on the outer surface of its main part comprising, from the core outwards, a first layer (101) made of titanium carbonitride TiCN and a second layer (102) made of alumina Al2O3.

This invention relates to the field of geological engineering and rock physics testing technology, and provides a high-precision method for measuring the porosity of rocks based on the lost-wax method. The method includes: S1, drilling a pre-drilled hole; S2, wax injection, where a wax solution containing surfactants is heated and melted, and wax is injected under multi-stage pressure, recording the total volume of the injected wax solution; S3, core sampling and core sealing, where a core drilling machine performs low-temperature core sampling of the wax-injected area; S4, thermal desorption and correction, recording the total mass; collecting and weighing the outflowing paraffin wax; S6, cleaning and dry weight measurement, where the core is completely dried to constant weight and its dry weight is measured; S5, porosity calculation, determining the effective porosity and total porosity of the target material. This invention utilizes surfactant modification, multi-stage pressure wax injection, shrinkage correction, and low-temperature core drilling to achieve a "modified filling-conformal sampling-correction analysis" process, simultaneously obtaining both effective porosity and total porosity, ensuring the authenticity and reliability of the measurement results.