141results about How to "Improve casting quality" patented technology

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.

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.

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 the technical field of brake shoe casting, in particular to a lightweight brake shoe and sand mold casting mold, the mold comprises a male mold and a female mold which are used for forming a sand mold, the surface of the male mold is provided with a first convex block, a first pouring cup and a pouring gate system, and the first convex block is provided with a first casting mold; the pouring gate system comprises a transverse pouring gate, an inner pouring gate and an inner pouring gate, the transverse pouring gate is connected with the first pouring cup, and the inner pouring gate is located at the upper end of the first boss and correspondingly arranged between two rib plates of the brake shoe; the female die comprises a second die plate, a first groove and a second pouring cup are arranged on the surface of the second die plate, and a plurality of second casting molds are arranged in the first groove. The inner pouring gate is arranged at the upper end of the shoe plate of the brake shoe and between the two rib plates, so that during pouring, mold filling of the large-face shoe plate and mold filling of the small-face shoe plate can be conducted in sequence from bottom to top, the problem of cold shut shrinkage porosity is avoided, and the machining procedures of the brake shoe are reduced.

The invention discloses a method for improving the compactness of square steel for deep drawing, which adopts tundish induction heating and tundish temperature control within a reasonable range to ensure that the pulling speed is kept constant during casting and continuous casting at a lower degree of superheat, and adopts a continuous casting heavy pressure technology to improve the center porosity and shrinkage cavity of a casting blank; a BD cogging mill is adopted for large rolling reduction rolling, and the maximum single-pass rolling reduction is 100 mm; and isothermal operation is carried out in front of the fourth continuous rolling mill, only temperature measurement is needed, and the method is simple and easy to implement. According to the 154 mm deep drawing square steel produced through the technical scheme, the center porosity is smaller than or equal to 0.5 grade, the general porosity is 0 grade, the ingot segregation is 0 grade, and the residual shrinkage cavity is 0 grade, that is, no ingot segregation and residual shrinkage cavity exist, and ultrasonic flaw detection reaches A grade or above; and the high compactness requirement of the steel for deep drawing is met.

The present invention discloses a casting process measurement and control system based on cloud computing, comprising a data acquisition module, a process control module and a mold detection module, characterized in that: the data acquisition module is used to collect equipment operation data and visual images and temperatures of castings, and enter comprehensive parameters of castings to be produced into the system; the process control module is used to analyze the visual images and temperatures of castings, further analyze the operation parameters of the equipment, and adjust the operation parameters of the equipment according to the analysis results; the mold detection module is used to analyze the comprehensive parameters of castings, select raw materials and make corresponding casting molds according to the analysis results; the data acquisition module, the process control module and the mold detection module are electrically connected to each other; the data collection module comprises a sensor module, a visual module and a casting comprehensive parameter entry module; the sensor module is used to collect equipment operation data; the present invention has the characteristics of high accuracy and high production efficiency.

The invention discloses a casting method for improving appearance surface quality of metal lithium, which comprises a flow guide device, a casting pipe mechanism, a mold, a lithium liquid conveying pipeline and an oil coating mechanism, the flow guide device is placed on the mold, and the flow guide device comprises a flow guide sleeve, a flow guide rod, four flow dividers, four inner connecting plates, four outer connecting plates and a fixing plate; the casting pipe mechanism comprises a casting pipe inlet and a casting pipe outlet; the liquid metal lithium casting device is reasonable in design and convenient to use, liquid metal lithium casting is achieved, liquid lithium flows out of a mold base plate in the casting process, the downward flow speed of lithium liquid is reduced through the internal structure of the flow guide device, and small lithium beads splashed when the lithium liquid impacts the base plate are blocked by the flow guide sleeve; the purpose of reducing the splashing speed and range of the lithium liquid is achieved, scars are avoided, the casting quality of a lithium ingot is improved, bubbles are avoided, and meanwhile the problem that other flow guide tools cannot be taken out due to the fact that the lithium liquid is rapidly solidified and embedded in metal lithium is solved.

The utility model discloses an oblique outlet shell sand mold low-pressure casting mold which comprises an upper box, a lower box, a built-in sand core and an external sand core which are used for casting forming, the upper box and the lower box are detachably spliced into a box body, the built-in sand core and the external sand core are arranged in the box body, the external sand core is located between the upper box and the lower box, and the upper box and the lower box are detachably spliced into the box body. The external sand core is connected with the internal sand core in a clamped mode, sand collecting grooves are formed in the positioning and matching positions of the internal sand core and the external sand core and the lower box, a flange movable block is arranged on the oblique wire outlet position of the external sand core in a sleeved mode, and a chilling block is arranged on one side of the flange movable block. By pre-embedding the chiller, the defects such as shrinkage cavities and shrinkage porosity of important parts of the sealing groove of the casting flange are effectively avoided, so that the defect grade of the important parts reaches the standard; the external sand core can effectively solve the problem of difficulty in parting; smooth parting of the casting is ensured by adopting a flange loose piece to realize a flange segmentation mode; and shakeout in the casting is reduced by adding the sand collecting groove, and the casting quality of the casting is improved.

The invention belongs to the technical field of alloy materials, and discloses a die-casting aluminum alloy, an aluminum alloy casting and a preparation method of the aluminum alloy casting. The die-casting aluminum alloy comprises the following components in percentage by mass: 11%-13% of Si, 0.9% of Fe, 1.0%-3.5% of Cu, 0.15%-0.5% of Mn, 0.3%-1.0% of Mg, 0.1%-0.3% of Zn, 0.5%-0.7% of Ni, 0.1% of Pb, 0.2% of Sn and the balance of Al and inevitable impurities on the basis of the overall mass of the die-casting aluminum alloy. The aluminum alloy casting is high in density and small in apparent porosity, after die-casting forming, secondary surface treatment is not needed, T6 heat treatment process strengthening can be directly conducted, the aluminum alloy casting obtains higher yield strength, tensile strength, fatigue resistance, corrosion resistance and hardness, time consumed by the machining procedure is greatly shortened, the cost is greatly reduced, and the production efficiency is improved. And the production efficiency is improved.

The invention discloses a stepped casting system for an engine cylinder block, and belongs to the field of casting. According to the technical scheme, the stepped casting system for the engine cylinder block comprises a main pouring gate part, the main pouring gate part comprises a transverse main pouring gate, a plurality of branch pouring gate parts are arranged below the transverse main pouring gate, each branch pouring gate part comprises a first vertical pouring gate, the first vertical pouring gates are connected with middle pouring gates, the other ends of the middle pouring gates are connected with branch pouring gates, and the branch pouring gates are connected with the transverse main pouring gate. The shunting pouring gate is vertically arranged, the lower end of the shunting pouring gate is connected with a first inner pouring gate, and the upper end of the shunting pouring gate is connected with a second inner pouring gate. In the casting process, liquid metal is divided into two layers and enters a cavity in a stepped mode, scouring to the cavity is relieved, liquid metal mold filling is stable, exhausting of the cavity is facilitated, after mold filling, the temperature of the liquid metal at different height positions is guaranteed, the liquid metal mold filling speed is high, the liquid metal mold filling is stable, and solidification is balanced; the occurrence of slag holes, air holes, sand holes and shrinkage porosity defects which are not easy to find is greatly reduced, and the casting yield is improved.

The utility model belongs to the technical field of casting equipment, and particularly relates to a casting system based on waste steel recycling, which comprises a crushing mechanism for crushing waste steel and a smelting mechanism for smelting the waste steel, the conveying mechanism is used for conveying the crushed waste steel, the magnetic separation mechanism is used for conducting magnetic separation on the waste steel on the conveying mechanism, the casting mechanism is used for casting forming, the magnetic separation mechanism comprises a primary separation assembly and a fine separation assembly, the magnetic separation mechanism is used for adsorbing the waste steel and removing other impurities, and the quality of smelted castings is guaranteed; and the magnetic separation mechanism with the primary separation assembly and the fine separation assembly is adopted, so that waste of the waste steel can be avoided, the recycling rate of the waste steel is increased, and the manufacturing cost of castings is further reduced.

The present invention provides a low-cost, fast self-drying water-based casting coating with fast self-drying speed, low production cost, low irritating odor, good brushability and leveling property and a preparation method thereof. The coating comprises a refractory base material, a binder, a dispersing suspending agent, an additive and water, wherein the binder adopts water-based polyvinyl butyral resin and fast-drying silica sol; the self-drying time of a coating with a thickness of 0.5 mm under conditions of low ambient humidity and good ventilation conditions does not exceed 60 minutes; even under conditions of an ambient temperature of 25°C and a relative humidity of up to 80%, the coating can basically achieve natural drying within 100 minutes, meeting the casting production requirements under high humidity climate conditions in the south. The present invention belongs to the technical field of casting coatings, and can replace alcohol-based coatings and ordinary drying-type water-based coatings for various casting production, effectively eliminating defects such as sand sticking, sand inclusions, and pores in castings, reducing production costs, and improving the production environment.

The present application belongs to the technical field of investment casting, and particularly relates to a manufacturing process of a impeller shell. The manufacturing process of the impeller shell comprises the following steps: 1) preparing a wax mold; 2) preparing a surface layer shell; 3) preparing a back layer shell; 4) sealing the shell with slurry; 5) dewaxing; and 6) baking. The manufacturing process of the impeller shell has the characteristics of short production cycle, low production cost, good shell removal, high finished product rate and the like, and improves the casting quality of the castings containing the impeller with a runner width less than 4 mm in the production of the casting industry.

The utility model provides an overturning synchronizing device. Relates to the field of overturning tools, and aims to solve the problems that a sand core deviates from a correct position due to the fact that clamping pieces of an existing clamp do not move synchronously and the sand core is damaged due to the fact that the two sides are not synchronous when the sand core is clamped to rotate, a first synchronizing mechanism is arranged for a clamping block, and the clamping block can synchronously clamp the two sides of the sand core; the problem of deviation caused by disturbance of the sand core in the clamping process is reduced; and a second synchronizing mechanism is arranged for the rotary body in contact with the sand core, and the two sides of the sand core can be driven to synchronously rotate after the sand core is clamped, so that the problems of damage and destruction caused by dislocation and torsion of the two sides of the sand core are reduced, the clamping precision of the sand core is ensured, and the casting quality is improved.

The utility model relates to the technical field of shaft coupling seat processing, in particular to an overflow device for shaft coupling seat pouring, which comprises a lower die seat, an upper die seat is arranged on the lower die seat, a cavity is arranged in the lower die seat close to the upper die seat, a pouring port is arranged at one end of the top of the upper die seat, and an overflow riser is arranged at the other end of the top of the upper die seat. A pouring gate extending to the inner side of the pouring opening is formed in one side of the interior of the cavity, an overflow channel extending to the inner side of the overflow riser is formed in the other side of the interior of the cavity, and a separation deslagging mechanism is installed on the upper die base and the lower die base and comprises a deslagging separation assembly, a linkage assembly, a material injection sealing assembly and a recycling assembly. The deslagging separation assembly is used for separating a channel to guide dirty iron liquid containing slag to be discharged; the device is simple in structure and convenient to operate, slag-containing dirty iron liquid mixed with molten slag and shakeout is effectively discharged, the conditions of air holes and slag inclusion are reduced, and the casting quality is improved.

The utility model provides a bearing seat casting device which comprises a base, bearing plates are fixedly connected to the two sides of the top of the base, a mounting plate is fixedly connected between the tops of the two bearing plates, and supporting plates are fixedly connected to the two sides of the top of the mounting plate. Compared with the prior art, the circulating cooling device has the following beneficial effects that a water suction pump and a tubular heat exchanger in the circulating cooling assembly are started, cooling liquid in the outer cooling cavity and the inner cooling cavity is subjected to heat exchange, extraction and cooling through a water conveying pipe, a cooling water tank, a water suction pipe and a water outlet pipe, and heat exchange and cooling can be performed from an inner ring of the mold cavity through the inner cooling cavity; heat exchange cooling can be carried out from the outer ring of the die cavity through the outer cooling cavity, heat dissipation is carried out in an outer ring and inner ring wrapping mode, heat exchange of all positions of the bearing seat in the die cavity is uniform, uniform forming can be carried out, and the casting machining efficiency and the casting machining quality of the bearing seat are improved while the casting machining efficiency of the bearing seat is improved.

The present invention discloses a casting mold, comprising a mold body, wherein the first end face comprises a cavity surface, and the cavity surface is provided with at least one protrusion and / or depression; the cooling hole group comprises a first cooling hole and a second cooling hole, and the first cooling hole and the second cooling hole are both extended and arranged in a direction close to the first end face; the distance from the bottom of the first cooling hole to the cavity surface and the distance from the bottom of the second cooling hole to the cavity surface are both set within a preset range. By setting the distance from the bottom of the first cooling hole to the cavity surface and the distance from the bottom of the second cooling hole to the cavity surface within a preset range, that is, the distance from the bottom of the first cooling hole to the cavity surface and the distance from the bottom of the second cooling hole to the cavity surface are close, the cavity surface of the mold body is uniformly cooled, the temperature balance of the cavity surface during metal casting is improved, the casting quality is improved, and the service life of the mold is improved.

This invention belongs to the field of casting binder technology, and particularly relates to an environmentally friendly water glass casting binder with anti-aging function. The raw material composition of this invention includes: sodium water glass, lithium water glass, polymethyl methacrylate, and lithium carbonate, which enables: 1. Polymethyl methacrylate combined with lithium carbonate to provide more hydrogen bonds to the water glass binder system, changing the surface potential energy and solvation ability of the water glass, improving the stability of the water glass, and thus obtaining better "anti-aging" ability; 2. Lithium carbonate itself has the effect of a dispersant, and combined with water glass at a specific modulus, it can further improve the dispersibility of the sand mold; 3. Polymethyl methacrylate itself has basic bonding strength, and by limiting the modulus of the water glass, it can also appropriately improve the bonding strength of the entire binder; 4. The amount of organic polymethyl methacrylate added to this binder is sufficiently small, ensuring that the binder has sufficient safety and environmental protection advantages.

The invention discloses a high-strength 6xxx series fine grain aluminum alloy for 3C products and a manufacturing method of the high-strength 6xxx series fine grain aluminum alloy. The high-strength 6xxx series fine grain aluminum alloy comprises, by weight, 0.7%-1.2% of Si, smaller than or equal to 0.20% of Fe, 0.7%-1.2% of Cu, 0.4%-0.8% of Mn, 0.8%-1.1% of Mg, smaller than or equal to 0.1% of Cr, smaller than or equal to 0.25% of Zn, smaller than or equal to 0.1% of Ti, 0.03%-0.09% of Sc, 4.65%-6.65% of aluminum-titanium-carbon intermediate alloy and the balance aluminum. By adding the aluminum-titanium-carbon intermediate alloy, the refining capacity and aging are efficiently improved; the melt purification of the aluminum alloy is facilitated, and the metallurgical quality of an aluminum alloy product is improved; the aluminum alloy cast ingot can obtain grains with uniform and consistent sizes from the surface to the center, and the final use performance of the product is improved; the intergranular corrosion rate can be reduced, and the corrosion resistance of an aluminum alloy product is improved; refining poisoning can be effectively overcome, and the casting quality of the high-strength and heat-resistant aluminum alloy is improved. The manufactured high-strength 6xxx series fine grain aluminum alloy has the following advantages that the alloy performance is that the yield strength is larger than or equal to 430 MPa, the tensile strength is larger than or equal to 450 MPa, and the ductility is larger than or equal to 10%; the average grain size is smaller than or equal to 150 microns, and the maximum grain size is smaller than or equal to 300 microns.

The present invention provides an apparatus and a process for preparing a circuit board protective layer by using aluminum nitride, comprising a base, one end of the base is provided with a circuit board positioning mechanism, one side of the circuit board positioning mechanism and the middle part of the base are provided with a cast film filling mechanism, one end of the cast film filling mechanism is provided at the output end of an injection mechanism, and the injection mechanism is fixedly connected to the other end of the base. The invention delivers the cast film slurry after vacuum degassing into the cast film filling needle tube through the injection mechanism, and the cast film slurry is evenly spread on the surface of the circuit board under the sliding control of the cast film filling mechanism, and the cast film slurry will not flow to the other side of the circuit board when clamped by the circuit board positioning mechanism, thereby reducing material waste, improving the casting quality, and greatly facilitating the next step of the process.

The present invention discloses a method and system for optimizing the iron mold sand-coated casting process of a traction wheel, including: constructing a target optimization function according to the hardness difference of the traction wheel groove; obtaining the thickness and material of the casting, using the improved fireworks algorithm to iteratively solve the optimization parameters of the traction wheel iron mold sand-coated casting process, and obtaining target data; the improved fireworks algorithm uses the Dropout algorithm in deep learning to screen the explosion radius of fireworks on the basis of the fireworks algorithm; and performing the traction wheel iron mold sand-coated casting according to the obtained target data. An optimization target function of the iron mold sand-coated casting process is proposed, and then the fireworks optimization algorithm is improved in a targeted manner according to the characteristics of the iron mold sand-coated casting process, and an intelligent iron mold sand-coated casting process optimization method is obtained, which can improve the casting quality of the elevator traction wheel.

A sand mold assembly for casting wheel hub side molds, comprising an upper sand mold and a lower sand mold; characterized in that the wall thickness of the left and right longitudinal cavity walls of the lower sand mold is greater than the wall thickness of the front and rear transverse cavity walls; a first lower riser socket with an upward opening is provided on the left longitudinal cavity wall, which is used to supply casting molten metal to the casting cavity; a liquid inlet channel is provided on the wall of the upper sand mold located on the left side of the core, and a pair of second upper riser channels, positioned front and rear, are provided on the wall of the upper sand mold located on the right side of the core, which respectively penetrate downward through the bottom wall of the upper sand mold; when the upper and lower sand molds are closed together, the liquid inlet channel is used to supply casting molten metal to the first lower riser socket, and the second upper riser channels connect to the casting cavity and are used to supply casting molten metal to the casting cavity; at the same time, optimizing the wall thickness and riser structure of the sand mold can greatly improve the casting quality of the wheel hub side mold casting.

The utility model discloses a mould for producing a high-strength high-elongation automobile clamp body, which comprises casting cavities, a mould plate and a pouring mechanism, the mould plate is internally provided with six casting cavities, and the six casting cavities are divided into three groups from left to right; the pouring mechanism comprises a pouring cup, a transverse pouring gate, a first vertical pouring gate and a second vertical pouring gate; the sprue cup is horizontally arranged above the casting cavity; the cross gate is arranged below the sprue cup; the first vertical pouring gate and the second vertical pouring gate are arranged below the transverse pouring gate; the upper end of the casting cavity is communicated with the riser, the lower end of the casting cavity is communicated with the water inlet, and the water inlet is communicated with the ingate; the mold solves the problems of low molten iron utilization rate and high rejection rate by changing the arrangement mode of castings, matching with the ceramic filter and arranging the independent risers, and improves the production efficiency of products and the quality of the castings while achieving light weight.

This invention relates to the field of valve molding, and more particularly to a valve molding casting equipment and mold, comprising a mold body, with a gating and riser body at the upper end of the mold body. The mold body is made of foam plastic, and its surface is coated with a refractory coating. After drying, the mold body and the gating and riser body are bonded and fixed together with hot melt adhesive to form a mold cluster. It also includes a vibrating table and a sand box mounted on the upper end of the vibrating table. The sand box has an internal cavity that can be drawn into a negative pressure state. The cavity is connected to the bottom of the sand box through multiple air holes. A U-shaped frame is provided at the upper end of the sand box, with a plastic film covering its upper side. A support ring is provided on the inner side of the U-shaped frame, and the outer side of the support ring is fixedly connected to the U-shaped frame by multiple reinforcing rods. During use, this equipment, compared to existing technologies, ensures the sealing performance after film covering. Furthermore, when releasing the negative pressure state, a longer waiting time is eliminated, improving overall processing efficiency.

The utility model relates to a projector which comprises a shell, an optical machine assembly and an external lens. The shell is provided with a containing cavity and an opening, and the opening is used for communicating the containing cavity with the external space of the shell. And the ray machine assembly is arranged in the accommodating cavity and comprises a ray machine lens. One end of the external lens penetrates through the opening, is matched with the ray machine lens shaft hole and is used for being matched with the ray machine lens to carry out image projection; the external lens is detachably installed on the ray machine assembly.

The embodiment of the invention provides a flame-retardant coating for improving the quality of a sand casting surface and a preparation method of the flame-retardant coating. The preparation method of the flame-retardant coating comprises the following steps: firstly, preparing a flame retardant, and carrying out ball milling treatment on the flame retardant to obtain a first mixture; then, sufficiently mixing refractory powder, a suspending agent, a binder and the first mixture to obtain a second mixture; then, absolute ethyl alcohol is added into the second mixture, stirring is conducted, and a third mixture is prepared; and finally, carrying out low-temperature pretreatment on the third mixture to enable the baume degree value of the third mixture to be in a range of 20-40, so as to prepare the flame-retardant coating. The flame-retardant coating has the characteristics of good refractoriness, small thermal expansion coefficient and the like, and can improve the surface quality of a sand mold so as to improve the quality of a casting.

The invention discloses a U-shaped variable cross-section pouring cup and a gravity casting metal mold, the U-shaped variable cross-section pouring cup comprises an inlet area, a first arc-shaped descending area, an arc-shaped ascending area, a second arc-shaped descending area and a sprue which are communicated in sequence, and the pouring cup can improve the quality of a casting.

The invention discloses automatic casting equipment based on visual identification and an operation method of the automatic casting equipment, and belongs to the technical field of casting. The automatic casting equipment comprises a rack, a heating furnace is fixedly connected to one side of the top face of the rack, a crucible is movably connected into the heating furnace, and a sand casting box is placed on the other side of the rack; the visual identification part is mounted on the support frame and is used for shooting and identifying a real-time image of the pouring gate; the movable part is fixedly connected to the supporting frame and comprises a moving mechanism, an opening and closing mechanism, a clamping mechanism and a rotating mechanism, and the moving mechanism, the opening and closing mechanism, the clamping mechanism and the rotating mechanism are jointly matched for clamping, moving and rotating the crucible; and the controller is used for receiving the signal generated by the visual identification part and controlling the movement of the movable part. Automation of the casting process is achieved, the labor burden of operators is relieved, the personal safety coefficient of the operators is increased, the operation process is simplified, the efficiency is improved, positioning is more accurate, the casting quality is improved, and the integration degree is high.

The invention relates to a casting inner runner precoated sand mud core coating and a preparation method thereof, and relates to the technical field of precoated sand casting, the casting inner runner precoated sand mud core coating comprises the following components by mass: 5-10 parts of phenolic resin, 12-15 parts of a composite binder, 3-5 parts of a dispersant, 1-2 parts of an antifoaming agent, 20-30 parts of zircon powder, 5-10 parts of a fireproof filler, and 20-30 parts of a solvent; the composite binder comprises aluminum dihydrogen phosphate and water glass. The preparation method comprises the following steps: dispersing phenolic resin into a solvent, and stirring until the phenolic resin is completely dissolved to obtain a phenolic resin solution; adding the composite binder into the phenolic resin solution, heating and stirring to obtain a binder solution; adding a dispersing agent and a defoaming agent into the binder solution, and stirring to obtain a mixed solution; and adding zircon powder and a refractory filler into the mixed solution, and stirring after ball milling to obtain the casting inner runner precoated sand core coating. The coating has the effects of improving the adhesion performance and the thermal stability, the defect rate of castings can be reduced, and the quality of the castings is improved.

The invention relates to a casting technology, and provides an aluminum and aluminum alloy wheel belt casting automatic flow control device which comprises a chute, a flow guide pipe communicated with the lower end of the chute, a casting ladle arranged below the chute, a sleeve vertically arranged in the chute, a support used for supporting the sleeve, a stopper rod arranged in the sleeve and a first driving device used for driving the stopper rod to rotate. The second driving device is used for driving the stopper rod to ascend and descend; the first distance measuring instrument is arranged on the bracket; the first range finder is arranged right above the chute and is vertically arranged downwards, and the lower end of the stopper rod is arranged close to the upper end of the flow guide pipe. According to the automatic flow control device for aluminum and aluminum alloy wheel belt casting, the flow of liquid during casting can be efficiently and automatically adjusted, and manual intervention can be remarkably reduced.