542 results about "Sand casting" patented technology

The invention relates to the technical field of sand casting, in particular to an assembly-adjustable casting sand box for sand casting, which comprises a base plate, a first sand box and a second sand box, and further comprises four supporting plates, a supporting mechanism, a lifting mechanism, a preheating mechanism and a transfer mechanism, the top of the supporting plate is locked with the first sand box through a bolt; the four supporting mechanisms are fixedly connected to the four corners of the lower surface of the base plate correspondingly. The lifting mechanism is fixedly connected to the upper surface of the base plate. The horizontal adjustment of the first sand box and the second sand box is achieved, insufficient pouring is prevented, size errors and surface defects of castings are avoided, the purposes of preheating the first sand box and the second sand box are achieved, molten metal has good fluidity, molten metal pouring and exhausting are sufficient, local missing of the castings is avoided, and the auxiliary discharging function is achieved; the potential safety hazard of scalding can be eliminated, and the labor intensity of workers can be reduced.

The invention relates to the technical field of sand casting, in particular to a device and method for eliminating air holes in sand casting, comprising a mounting support, a bottom plate is arranged above the mounting support, a top plate is arranged above the bottom plate, and four ends of adjacent sides of the bottom plate and the top plate are fixedly connected with limiting frames; a round disc is fixedly connected to the center of the bottom of the bottom plate, and a spherical groove is formed in the bottom of the round disc; the mobility of molten metal in the cavity is improved through rotation of the mold, the molten metal can flow into a complex structure of the cavity, the cavity filling integrity is improved, it is guaranteed that gas in the molten metal has sufficient time to volatilize, and therefore generation of air holes is further reduced, and the product quality is improved. And as the pouring mold of the molten metal gradually returns in the inclined state, the molten metal is kept horizontal after pouring is completed, and the uniformity of mold filling of the cavity is guaranteed.

The utility model discloses an adjustable electric sand bath device which comprises a sand bath furnace, turnover mechanisms are arranged on the two sides in the sand bath furnace, a sand stacking mechanism is arranged in the middle in the sand bath furnace and comprises four lead screws, threaded blocks are arranged on the outer surfaces of the lead screws in a sleeved mode, an arc-shaped plate is arranged above the threaded blocks, and the arc-shaped plate is connected with the sand bath furnace. Arc-shaped bent plates are installed on the upper end faces of the arc-shaped plates, baffles are installed on one sides of the outer surfaces of the arc-shaped plates, heat conduction rods B are arranged on the opposite sides of the outer surfaces of the four arc-shaped plates, heat conduction rods A are arranged on the upper end faces of the heat conduction rods B, and heat conduction layers are arranged on the inner sides of the heat conduction rods A and the inner sides of the heat conduction rods B. The sand casting device has the advantages that sand casting can be carried out, so that sand is uniformly heated, samples at different liquid levels can be uniformly heated by arranging the sand stacking mechanism, and the applicability is improved.

The invention discloses a wear-resistant alloy casting part for electric machinery and a production process thereof, and relates to the technical field of electric casting part optimizing.The production process comprises the steps that raw materials are smelted to 1550-1620 DEG C under the protection of argon, and heat preservation is conducted for 30-60 minutes; composite modification treatment; performing low-pressure sand mold casting or die-casting molding; after a casting is austenitized for 1.5-3 hours at the temperature of 980-1050 DEG C, two-stage isothermal quenching is conducted in a salt bath, specifically, in the first stage, heat preservation is conducted for 15-25 minutes at the temperature of 280-320 DEG C, and in the second stage, heat preservation is conducted for 45-60 minutes at the temperature of 180-220 DEG C; and surface laser cladding is conducted, specifically, homogeneous alloy powder is adopted for conducting laser cladding with the lap joint rate being 35-50% on the working face of the casting part. The method has the beneficial effects that through the design principle of multi-scale cooperative strengthening and the cross-dimension coupling effect of material components, the process path and the microstructure, breakthrough improvement of the performance of the wear-resistant alloy casting is achieved.

The invention relates to the technical field of sand mold casting, and particularly discloses a gradient exhaust sand mold for an aluminum alloy thin-walled workpiece and a preparation method thereof.The sand mold comprises a cavity surface layer (with the hardness ranging from 90 HB to 95 HB), a transition layer (with the hardness ranging from 80 HB to 70 HB and a back sand layer (with the hardness ranging from 60 HB to 65 HB) which are arranged from inside to outside, and microporous ceramic exhaust rods (with the diameter ranging from 0.3 mm to 0.8 mm and the distance ranging from 1 mm to 3 mm) are embedded in the cavity surface layer; the exhaust rod is composed of a mullite fiber matrix and a nanometer gamma-AlO coating, the porosity is 40-50%, and the exhaust rod penetrates through the back sand layer to form a directional exhaust network. The preparation method comprises the following steps: mixing sand layer by layer (the cavity layer contains 1.0-1.5% of phenolic resin, and the back sand layer contains 0.4-0.6% of resin and 4-6% of starch); when sand is filled to the position 1-3 mm away from the surface of the cavity, an exhaust rod is implanted (the positioning precision is + / -0.1 mm); gradient compaction is carried out (the high pressure of a cavity is 3.0-4.0 MPa, the vibration of a transition area is 20-30 Hz, and the back sand airflow is 0.1-0.2 MPa); and carrying out microwave curing (2.5 to 3.5 kW, 60 to 120 s). The defects of hot cracks and air holes of the thin-wall part (smaller than or equal to 5 mm) are overcome synchronously, and the casting yield is increased to 95% or above.

The invention discloses a forming method of a duplex stainless steel propeller, which is specifically implemented according to the following steps: step 1, designing a casting process of the duplex stainless steel propeller, and designing a sand mold used by the casting process by adopting three-dimensional modeling software; 2, a designed sand mold is formed through the 3D printing technology, then the printed sand mold is detected and trimmed, then the sand mold is assembled and put into a sand box, the periphery of the sand box is filled with molding sand, and a mold cavity needed by propeller forming can be obtained; 3, the duplex stainless steel molten metal is injected into the cavity, and a complete propeller casting is obtained; and 4, the propeller casting obtained in the step 3 is subjected to heat treatment, and the final propeller casting is obtained. According to the method, the method that the sand mold is printed in a 3D mode, the cavity is formed, and then metal is poured for integral forming is adopted, so that the problems of sand falling, difficult forming and low strength existing in the existing technology that a resin model is printed in a 3D mode and then sand casting or metal propellers are directly printed in a 3D mode are solved.

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 discloses a sand recovery system of a precoated sand and iron sand mixed molding line, and particularly relates to the technical field of sand mold casting, the sand recovery system comprises a sand recovery device, a screening mechanism used for preliminarily screening mixed sand is arranged in a connecting frame, and a recovery mechanism used for recovering iron sand is arranged in a magnetic separator; a sorting mechanism used for recycling precoated sand is arranged on the surface of the sand recycling device, through the screening mechanism, the recycling mechanism and the sorting mechanism, large-particle sand in mixed sand can be separated out through a screen plate, then iron sand in the sand is separated out through a magnetic suction roller, and the precoated sand in the sand is separated out through an air blower. The precoated sand and the iron sand are added into the sand mixer, so that the precoated sand and the iron sand are mixed in proportion and then put into the molding line again for use, efficient recovery of the precoated sand and the iron sand is achieved, waste of the sand is reduced, and meanwhile energy consumption and equipment complexity in the sand recovery process are reduced by optimizing the sorting technology.

The invention belongs to the technical field of sand casting, and particularly relates to an automatic sand casting device which comprises a main frame, a feeding mechanism, a vibrating mechanism, a tamping mechanism and a fixing mechanism, the feeding mechanism is arranged on the side wall of the main frame, the vibrating mechanism is arranged at the bottom end of the main frame, the tamping mechanism is arranged at the top end of the main frame, and the fixing mechanism is arranged at the top end of the vibrating mechanism. According to the sand shakeout device, the vibration mechanism is arranged, sand raw materials are vibrated up and down, the technical effect of uniformly vibrating the sand raw materials is achieved, the technical problem that the sand raw materials are not uniformly distributed is effectively solved, the reciprocating mechanism is arranged, the sand raw materials are laid into the mold through reciprocating motion of the sliding frame, and the technical effect of uniform sand shakeout is achieved. And by arranging the trowelling mechanism, the technical effects of trowelling and recovering the sand raw materials are achieved by utilizing the back-and-forth movement of the trowelling plate on the upper surface of the mold, and the technical problems that in the prior art, manual trowelling is needed, and the sand raw materials are wasted are effectively solved.

The invention discloses a shakeout treatment device used after sand mold casting forming, relates to the technical field of sand mold casting, and aims to solve the technical problems that traditional sand mold casting equipment is lack of crushing and screening before shakeout, large-particle sand is prone to blocking a casting part, the equipment is stuck and damaged, and the service life and safety are affected. Comprising a treatment barrel, a feeding port formed in the upper portion of the treatment barrel, an isolation plate located below the treatment barrel, a motor, a draught fan and a pressure valve, and the motor is located below the treatment barrel. According to the device, the secondary crushing assembly and the pressing assembly are designed, so that the device can accelerate discharge of sand and stones in a mode of synchronous cooperation of gas pushing and ground attraction force, the effect of guaranteeing the use safety and the machining quality of the device is achieved, and meanwhile, by means of multiple times of shakeout treatment, the machining efficiency is improved. And therefore, the situation that the shakeout is blocked in the alloy casting due to uneven shakeout volume during follow-up secondary utilization of the shakeout is reduced, and the effect of guaranteeing the machining quality of the alloy casting is achieved.

The present invention discloses molding sand additive packages, molding sand binder compositions comprising the molding sand additive packages, molding sand comprising the molding sand binder compositions, use of the molding sand and a method of sand casting.

The invention discloses a laser cleaning method and system for residual sand of a sand casting mold, and the method comprises the steps: S1, obtaining point cloud data of the surface of the mold through a three-dimensional scanner, reconstructing a triangular mesh model M (V, E, F) of the surface of the mold, V being a vertex set, E being an edge set, and F being a surface set; s2, based on the triangular mesh model, a laser cleaning path is planned; S3, a laser head is controlled to move along the path, and laser is emitted to remove residual sand; according to the method, the residence time calculation model is introduced, the laser residence time is dynamically set by combining the region area, the material removal difficulty coefficient and the characteristic parameters, the adhesion strength signal of the surface of the mold under the laser action is detected in real time through the acoustic emission sensor, error feedback is formed, the laser power, the pulse frequency and the residence time are dynamically adjusted, and the mold surface quality is improved. And the self-adaptive response to the thickness and the adhesion strength of the residual sand in different areas is realized.

The invention discloses an intelligent low-stress sand casting method for a high-end numerical control machine tool basic large part, and belongs to the crossing field of mechanical manufacturing automation and a sand casting technology. According to the intelligent low-stress sand mold casting method for the basic large part of the high-end numerical control machine tool, different sand mold structures are selected for manufacturing parts with different moduli based on the obtained machine tool structural part model. A multi-material hollowed-out intelligent sand mold is selected for forming a high-modulus part, and the part of the sand mold comprises three main parts, namely a surface contact area, a hollowed-out sand mold area and an intelligent control unit. The part with the low modulus is formed by an intelligent compact sand mold, the sand mold of the part is based on a traditional compact sand mold, and a heating material and a control system are arranged in the sand mold. According to the method, the solidification process of each part of the machine tool casting can be intelligently regulated and controlled, so that low-stress casting of the casting is realized, the time required by subsequent aging is shortened, the production responsivity of the machine tool casting is improved, and production and development of a high-precision and high-stability machine tool are promoted.

The invention relates to the technical field of precoated sand casting, and discloses a precoated sand casting production line based on an intelligent casting island, the precoated sand casting production line comprises a machine body, a sand feeding pipe, a negative pressure sand suction pipe, a distance adjusting piece and a rotatable transmission shaft are respectively mounted in the machine body, and the distance adjusting piece is in transmission connection with two mold frames which are symmetrically arranged and have an adjustable distance; casting systems are arranged on the two mold frames, and each casting system comprises a toothed plate mounted on the machine body, a magnetic field generator mounted on the machine body, a casting frame capable of synchronously moving back and forth and left and right on the mold frames in a reciprocating manner, and a synchronous shaft capable of periodically and alternately rotating forwards and backwards. Technical breakthrough is achieved through the synergistic effect of the magnetic vibration coating and multi-mode vibration, Fe70Ga30 alloy nano-particles of the functional layer generate magnetic domain periodic orientation in an alternating magnetic field, micron-sized multi-axial vibration is excited, the surface of molding sand and a mold interface is deepened, intermolecular acting force is destroyed, deep-layer adhesive sand is stripped in a non-contact mode, and the surface of the mold is stripped in a non-contact mode. The problem that energy penetration of traditional impact type cleaning is insufficient is solved.

The utility model provides a sand mould casting sample gating system, relates to the technical field of casting, the sand mould casting sample gating system comprises a sprue, a steady flow ring groove, a plurality of cross gates and a plurality of cavities, the sprue is connected to the steady flow ring groove, the plurality of cross gates are uniformly arranged around the steady flow ring groove at intervals, and the cavity is connected to the steady flow ring groove. The multiple cavities are connected to the multiple cross gates in a one-to-one correspondence mode, and the sectional dimensions of the multiple cavities are different. Compared with the prior art, a plurality of cavities are independently arranged, samples with various wall thicknesses can be prepared at the same time, different cavities are mutually independent, the cross gates are uniformly arranged, the temperatures of molten metal reaching the flow gates are similar, and the influence of uncontrollable factors on experimental results is eliminated to the greatest extent. And samples under various cooling speed conditions can be obtained through one-time pouring, so that the efficiency is improved, the cost is saved, and meanwhile, the stability of output data and the accuracy and reliability of an experimental analysis conclusion are ensured.

The present invention discloses a coated sand casting production line and process based on an intelligent casting island, and relates to the technical field of coated sand casting. The present invention discloses a coated sand casting production line and process based on an intelligent casting island, which can automatically clean the coated sand remaining in the mold. The coated sand casting production line based on the intelligent casting island includes a mounting frame, the mounting frame is fixedly connected to a symmetrically arranged casting mold, the mounting frame is slidably connected to a discharger, the discharger is slidably connected to a sand casting machine, and also includes symmetrically arranged fixed plates, the symmetrically arranged fixed plates are fixedly connected to the mounting frame, electric push rods are fixedly connected between the symmetrically arranged fixed plates, the telescopic ends of the electric push rods are fixedly connected to sliding plates, the mounting frame is fixedly connected to a pressurizer, and the sliding plate is slidably connected to an air jet plate. When each sand casting is completed, the air jet pipe moves back and forth to spray air to clean the inner wall of the casting mold, so as to avoid the residual coated sand in the casting mold affecting the quality of the sand mold for subsequent casting.

The utility model discloses a horizontal line casting mold for a combined sand core steering gear shell, which comprises a sprue base, a transverse pouring gate is connected with the sprue base in the transverse direction, four casting units are connected with the transverse pouring gate, and each casting unit comprises an auxiliary riser water inlet pressing edge and a main riser water inlet pressing edge which are connected with the transverse pouring gate. An auxiliary riser and a main riser are arranged at the tail end of the auxiliary riser water inlet pressing edge and the tail end of the main riser water inlet pressing edge respectively, a horizontally-arranged casting is arranged between the auxiliary riser and the main riser, a sand core is arranged in the casting, and a lower die main core head and an upper die main core head which are used for fixing and clamping are arranged under and over the exposed end of the sand core respectively. A first auxiliary core head and a second auxiliary core head which are used for auxiliary supporting are arranged on the two transverse sides of the casting correspondingly; according to the utility model, the one-mold four-piece steering gear shell is realized on a horizontal production line, the production efficiency is improved, the core setting stability is improved, and the beneficial effects of improving the casting quality and reducing the production cost are achieved.

The utility model belongs to the technical field of casting processing, and particularly relates to a foundry sand paving device for sand mold casting, which comprises a casting box, a mold is placed at the bottom of the casting box, the casting box and the mold are placed on a mobile platform, a placing groove for placing the casting box is arranged on the mobile platform, and the casting box is placed in the placing groove. The casting device comprises a casting box, a moving platform is arranged on the casting box, a moving assembly is arranged below the moving platform and used for driving the moving platform to move in the horizontal direction, a tiling assembly is arranged on the top of the casting box, and the tiling assembly comprises a scraping plate moving in the length direction of the casting box. According to the casting sand tiling device, the casting sand in the stock bin is evenly distributed in the casting box, then the casting sand in the casting box is scraped to be flat through the scraping plate of the tiling assembly, and compared with the mode that the casting sand is directly tiled with hands in the prior art, the casting sand tiling efficiency and the tiling effect are improved through the design.

The clamping tool for the sand casting ball valve blank comprises an air cylinder, a fixing plate, a driving disc, a driving rod, a driven rod and a clamping jaw, and the fixing plate is fixedly arranged on the peripheral face of a cylinder body of the air cylinder in a sleeving mode; a plurality of racks parallel to the axis of the piston rod are fixed on the peripheral wall of the driving disc; the number of the driving rods is multiple, sector gears are fixed to one ends of the multiple driving rods, the tooth ends of the multiple sector gears are meshed with the multiple racks in a one-to-one correspondence mode, and the connecting positions of the sector gears and the driving rods are rotationally connected to the bottom face of the fixing plate; a rod body of the driven rod is fixed at the other end of the driving rod; the clamping jaw is fixed to one end of the driven rod so as to clamp a sand casting ball valve blank. The clamping device has the advantages of being large in load, large in stroke and accurate in positioning, can flexibly clamp ball valves of multiple varieties and specifications, and is wider in application range.

The utility model discloses a waste sand recovery device of a swage sand-coated casting process, which comprises a conveying belt, the outer wall of the conveying belt is fixedly connected with a mounting plate, the top end of the mounting plate is fixedly connected with a first gear, the bottom end of the mounting plate is fixedly provided with a motor, and the output end of the motor penetrates through the mounting plate and is fixedly connected with a mounting seat. A screw rod is rotationally connected to the mounting base, a second gear is fixedly connected to the position, corresponding to the first gear, of the bottom end of the screw rod, a sliding groove is formed in the mounting base, clamping grooves are symmetrically formed in the mounting base, and a lifting plate is slidably connected to the interior of the sliding groove; the scrap iron sorting device has the advantages that the scrap iron sorting efficiency is high, a large amount of labor input is avoided, the labor cost is saved, the overall structure is simple, the manufacturing cost and the follow-up use cost are low, and the scrap iron sorting device is worthy of application and popularization.

The utility model provides a sand mold casting bottom plate conversion device, which relates to the technical field of sand mold casting equipment and comprises a bottom plate, a plurality of telescopic mechanisms are arranged on the side surface of the bottom plate, and fixing components for clamping sand molds are arranged on the telescopic mechanisms. According to the sand mold casting bottom plate conversion device, the sliding block and the lengthening plate can be driven to move through rotation of the lead screw, the size of the device can be adjusted by moving the lengthening plate in different directions and adjusting the relative distance between the bottom plate and the lengthening plate, and when a supporting area of a mold needs to be increased or the structure of the mold needs to be changed, the device is convenient to use. The sand mold casting bottom plate does not need to be replaced, the rotating rod can drive the threaded rod to be screwed in and out of the threaded block, then the threaded rod drives the clamping plates rotationally connected with the threaded rod to move, the clamping plates in different directions move towards the bottom plate, a sand mold can be fixed, and displacement or deformation in the casting process is prevented.

The invention discloses a sand casting water-based coating and a preparation method thereof, and relates to the technical field of casting coatings. The preparation method of the sand casting water-based coating comprises the following steps: firstly, adding the refractory aggregate, the composite suspending agent, the nano aluminum oxide and the sodium lignin sulfonate into water, and uniformly stirring to obtain a premix; and then adding sodium carboxymethyl cellulose into the premix, and continuously stirring to obtain the sand casting water-based paint. The coating prepared by the invention has good suspension performance and fire resistance.

The utility model relates to the technical field of electric smelting brick waste sand treatment, and discloses a sand casting waste sand filtering and recycling device which comprises a crushing box, a motor is installed on the outer side of the crushing box, two crushing rollers are rotationally connected into the crushing box, one end of each crushing roller is fixedly connected with a cylindrical gear, and the other end of each crushing roller is fixedly connected with a motor. And the other end of one crushing roller is fixedly connected with a first belt wheel, the bottom of the crushing box is fixedly connected with a recycling box, and the interior of the recycling box is rotationally connected with a rotating rod. According to the waste sand crushing device, the motor is started to drive the crushing rollers to rotate, under the meshing action of the two cylindrical gears, the two crushing rollers can rotate at the same time, then waste sand is put into the crushing box from the top of the crushing box to be crushed, bonded large-particle waste sand can be crushed and then recycled, resource waste is avoided, and meanwhile under the rotation of the cam, the waste sand can be recycled. And the screening net can screen the waste sand, so that the crushing and screening integrated effect is achieved, and the working efficiency is higher.

The invention belongs to the field of part manufacturing, and particularly relates to a molten metal purification method for sand mold casting, which comprises the following steps: S1, arranging a steel barrel piece between a pouring ladle and a casting mold for soft sealing, mounting a pressure-bearing pipeline on the steel barrel piece, and forming an angle of 45 degrees between an outlet of the pipeline and a vertical axis; s2, argon is introduced into the pressure-bearing pipeline 5 seconds before pouring, the pressure of the argon is 0.1-0.3 MPa, and argon introduction is stopped immediately when pouring is stopped; and S3, in the cooling process of the molten metal in the casting mold cavity, argon bubbles float upwards to bring inclusions to a top slag collecting groove, and a slag collecting groove is removed during sand cleaning and cutting. According to the steel barrel piece, contact between the atmosphere and molten metal is isolated, and oxide inclusion is effectively prevented; and meanwhile, argon is blown in in the pouring process to form bubbles and enter a casting mold cavity, and casting defects can be effectively reduced according to the principle that the bubbles float upwards to take away inclusions.

The invention relates to the field of sand mold casting, in particular to a casting method of a bearing groove. The problems that in the prior art, the bearing groove part is still sintered and burnt-on sand is serious, burnt-on sand can only be cleaned through burning and cutting of an oxygen dissolving rod, a large amount of manpower and material resources need to be consumed in the finishing process, a body is prone to being seriously damaged during cleaning, the molded line and quality of the bearing groove are affected, and casting scrapping is even caused by serious burnt-on sand are solved. According to the casting method of the bearing groove, the sand burning problem of the thick and large-section bearing groove and the airway surface is solved, and the appearance quality of similar castings is effectively improved. The special core bar and the chromium ore sand core are matched with the special graphite chilling block to form a whole, and the sand burning-on resistance of the graphite chilling block is utilized, so that the sand burning-on problem of the bearing groove is effectively solved. Meanwhile, the size of the special core bar and the graphite chilling block are flexible and adjustable according to the sand core structure, and the universality is high.

The invention relates to the technical field of casting cooling, in particular to a swage sand-coated casting cooling machine. The cooling device comprises a water tank frame, moving rails are arranged on the two sides of the surface of the water tank frame, a moving table is arranged on the surfaces of the moving rails, the moving table slides on the surfaces of the moving rails, a protection plate is arranged above the water tank frame, a cooling assembly is arranged in the protection plate, and adsorption assemblies are arranged on the two sides of the cooling assembly. When turbine blades rotate to drive a connecting rod to rotate, fan blades at the end of the connecting rod blow air to the outside of a protection plate, oxide smoke dust and water vapor generated by cooling are adsorbed through activated carbon in an adsorption box, meanwhile, when the connecting rod rotates, a transmission wheel is driven to rotate through a transmission belt, and when the transmission wheel rotates, a stirring rod is driven to rotate; and the stirring rod stirs the activated carbon placed in the adsorption box, so that the activated carbon particles uniformly adsorb oxide smoke dust and water vapor, and the health and safety of operators are protected.

The utility model relates to the technical field of precoated sand casting, in particular to a precoated sand shell-making mould for an automobile rear suspension support, which comprises an upper mould and a lower mould, the upper mould is provided with a deep cavity and a high platform along with a shape product, the deep cavity is provided with three convex ribs, sand shooting holes penetrating to the top of the upper mould are arranged in interval grooves of the convex ribs, and the upper mould is provided with a plurality of sand shooting holes penetrating to the top of the lower mould. A surrounding cavity is formed in three surfaces of the high platform, a first inverted conical cavity is formed in the top of the high platform, and a plurality of second inverted conical cavities are formed in the surrounding cavity; the lower die shape follow-up product is provided with a trapezoid table corresponding to the deep cavity and a bottom groove corresponding to the high table, and pattern dies corresponding to the surrounding cavity are arranged on the two sides of the bottom groove. According to the mold, part of the mold shell of a product can be rapidly prepared in a high-quality mode, the surface of the prepared mold shell is smooth, mold repairing is not needed, and then a cavity for casting the product is formed after the mold shell and a mold shell prepared through another mold are assembled.

The application belongs to the field of core shooting machines, in particular to a kind of foundry coated sand core shooting machine, including frame, movable die assembly, fixed die assembly, sand shooting assembly, sand supply assembly, and the fixed die assembly includes upper die;The upper die and frame are in fixed connection;The upper die top is provided with sand inlet, and bottom is provided with forming chamber;The inner wall of the upper die is provided with exhaust air duct;The bottom of the exhaust air duct is provided with a plurality of first exhaust ports, and the first exhaust port is in communication with the forming chamber;Through the cooperation of first exhaust port, exhaust air duct and second exhaust port, the forming cavity of upper die and bottom die can be exhausted, to reduce the loosening of sand particles in the cavity caused by gas, improve the density and smoothness of the surface of the formed sand core, and at the same time, through the setting of the protrusion, the escape speed of the gas in the exhaust air duct can be accelerated, thereby ensuring the exhaust effect of the device.

The invention relates to the technical field of casting quality detection, in particular to a casting quality automatic detection method for a sodium silicate sand mold casting process. The method comprises the following steps: acquiring point cloud data of a casting surface of a sodium silicate sand mold casting process; obtaining a data distribution characteristic value of each similar point set according to the relative position distribution of the point cloud data in each similar point set and the distribution condition of the point cloud data in the neighborhood of each point cloud data; determining a noise evaluation value of each similar point set by combining aggregation distribution characteristics among the point cloud data in the similar point sets and discrete distribution characteristics among different similar point sets; obtaining a filtering radius corresponding to each similar point set according to the data distribution characteristic value and the noise evaluation value; and filtering the corresponding similar point set by using the filtering radius, and evaluating the quality of the casting based on the filtered point cloud data. The filtering effect of the point cloud data of the casting surface is ensured, and the accuracy of the detection result of the casting quality is improved.

The present application discloses a sand casting mold, belonging to the technical field of sand casting. The mold plate comprises a sand frame provided above the mold plate, and the four corners of the outer periphery of the sand frame are fixedly connected with positioning cylinders, a guide plate is provided below the mold plate, and a material guide frame is provided below the guide plate, and the material guide frame is inclined, a support rod is fixedly connected to the lower end surface of the guide plate, and the support rod passes through the material guide frame and is fixedly connected to the material guide frame, a plug rod is slidably connected to the lower part of the interior of the positioning cylinder, an adjustment block is fixedly connected to the outer wall of the plug rod, and a rigid spring is movably inserted inside the plug rod, and the material guide frame is provided below the mold plate, and during the compaction process of the clay sand inside the sand frame, the clay sand is discharged from one end of the material guide frame through the guide plate and the material guide frame, which is convenient for the staff to collect the overflowed clay sand, effectively controls the flow and collection of the clay sand, reduces the waste of clay sand and redundant cleaning work, and improves the material utilization rate.