65results about How to "Improve casting efficiency" patented technology

The low-pressure casting and pouring system comprises a base, a sliding table, a lower die, a first rack, a second rack and an upper die, the sliding table is fixedly connected to the upper surface of the base in the left-right direction, the bottom of the lower die is fixedly connected with the top of the sliding table, and the lower die moves left and right through the sliding table; the first machine frame and the second machine frame are fixedly connected to the left end and the right end of the upper surface of the base correspondingly, the number of the first hydraulic oil cylinders is two, and the two first hydraulic oil cylinders are fixedly connected to the left end and the right end of the upper surface of the first machine frame correspondingly; the output end of the first hydraulic cylinder is fixedly connected with the top of the upper die. Alternating vibration of the lower die is achieved, the liquidity of molten aluminum can be improved, discharging of bubbles in a die cavity of the lower die can be enhanced, the quality of a formed aluminum bar is guaranteed, time and labor are saved during single grabbing and discharging of the aluminum bar, and the casting efficiency of the aluminum bar is improved.

The invention belongs to the technical field of casting machining, and particularly relates to lost foam casting equipment which comprises a sand box, supports are arranged on the two sides of the sand box, a plurality of U-shaped holes are formed in the inner bottom wall of the sand box, isolation frames are inserted into the U-shaped holes, butt joint plates are arranged at vertical openings of the isolation frames, and the butt joint plates are connected with the supports through bolts. The bottom end of the butt joint plate is fixedly connected to the inner bottom wall of the sand box; the isolation frame is matched with the butt joint plate to form an isolation area in the sand box; a fixing plate is arranged below the sand box, and a first hydraulic cylinder is arranged at the top end of the fixing plate and located below the isolation frame; according to the lost foam casting equipment, the isolation frame is arranged, and the isolation frame is matched with the butt joint plate to form an isolation area in the sand box during use, so that all sand in the sand box does not need to be taken out and added in the process of placing a lost foam and taking out a casting; the operation complexity of casting operation is reduced; the casting efficiency is improved.

The invention discloses a casting technology of a semicircular casting. The casting technology comprises the following steps of mold making, tree assembling, shell making, dewaxing, roasting, pouring, sand removing, riser gas cutting, heat treatment, finishing and result judgment. According to the casting technology of the semicircular casting, the circular casting is subjected to shell making pouring, the finished product is obtained after cutting, compared with direct pouring of the semicircular casting, the efficiency and the yield can be improved, the size of the manufactured casting is not deformed, follow-up correction is not needed, the requirement for the size of the casting is met, the technology yield is increased, and the production cost is reduced. The cost of a factory is reduced, on-time delivery is also guaranteed, a cutting line is arranged on a circular casting to provide quality guarantee for finished products at subsequent cutting positions, the problem that a wax mold cannot be thoroughly discharged is solved by utilizing an angle-adjustable rotating device when the wax mold is liquefied by utilizing a steam kettle, meanwhile, stable fixation of the mold can be realized, and the production efficiency is improved. And the safety in the process machining process is ensured, and the casting precision and efficiency of castings are improved.

The invention discloses a casting pouring system which comprises a casting platform, a rail placed on one side of the casting platform, a motor, air pumps arranged at the two ends of the casting platform and a control console used for controlling equipment operation, the control console is in telecommunication connection with the air pumps and the rail, a casting mechanism is arranged on one side of the casting platform, and the casting mechanism comprises a nut sleeve. The nut sleeve is movably connected with a transmission mechanism used for transmission, the transmission mechanism comprises a threaded rod, and the threaded rod is movably connected with three mold mechanisms used for casting. The bottom of a cover plate of the slag filtering mechanism is connected with a protection plate through a rotating shaft, when inert gas is blown into the casting ladle, gas blows a half-moon plate to drive the protection plate to rotate, an arc plate unidirectionally blocks molten slag under the action of a spring, the molten slag is effectively intercepted in the flowing process of molten metal, the problem that in existing equipment, the molten slag is difficult to separate from the molten metal is solved, and the service life of the molten slag is prolonged. The slag inclusion defect formed in the casting is avoided, and the mechanical property and the quality stability of the casting are improved.

The invention relates to the technical field of casting molds, in particular to a shell casting mold and a casting method.The shell casting mold comprises a base and a frame body, a mounting plate is vertically arranged on the base in a sliding mode, a lifting part for driving the mounting plate to vertically slide is arranged on the base, and a lower casting mold is rotationally arranged on the mounting plate; a casting upper mold opposite to the casting lower mold is rotationally arranged on the frame body, a centrifugal part for driving the casting upper mold to rotate is arranged on the frame body, a locking part is arranged between the casting upper mold and the casting lower mold, the casting upper mold comprises a cover plate rotationally arranged on the frame body, and a casting pipe head is coaxially and rotationally arranged on the frame body relative to the rotating center of the cover plate; the casting pipe head penetrates through the cover plate, a plurality of unit modules are arranged on the cover plate in a sliding mode, a casting cavity communicated with the casting pipe head is jointly defined by the unit modules and the casting lower die, a separating and combining assembly is arranged on the frame body, and a casting assembly is arranged on the frame body. The method has the effect of improving the production efficiency and the casting quality of the metal casting.

The invention discloses a mine car hub casting device, and belongs to the technical field of metal casting, the mine car hub casting device comprises a lower die, an upper die, a middle die and a partition die, a casting forming cavity is formed among the lower die, the upper die, the middle die and the partition die, the lower die comprises a bottom support and a pouring shell, the pouring shell is fixed at the center position of the inner side of the bottom support, and the partition die is fixed on the bottom support. According to the casting mold, the pouring shell guides molten metal to enter from the large-range pouring groove in the bottom layer area of the casting forming cavity, accumulated gas generated by the molten metal entering from the lower portion is discharged upwards through the exposed ventilation groove, and after the casting forming cavity is filled with the molten metal, the profiling sand core is pushed by the molten metal to rotate on the inner side of the upper mold; and the molten metal in the upper-layer area of the casting forming cavity is disturbed to adjust the state of the molten metal, meanwhile, accumulated gas escaping in the upper half area of the casting forming cavity is subjected to extrusion treatment, non-escaping gas and gas films in all areas in a metal casting mold are treated, and exposed air holes in the surface of the mine car hub casting are eliminated.

The present invention provides a stopper rod replacement device, which relates to the field of metallurgy and provides a stopper rod replacement device, including: a stopper rod bracket for installing a stopper rod body including a lifting sleeve; a lifting assembly including at least two groups, each lifting assembly group cooperates with the lifting sleeve; a locking replacement assembly including a lifting mechanism and a self-locking mechanism, and the lifting mechanism can switch the self-locking mechanism between an open state and a closed state. In the stopper rod replacement device provided by the present invention, a spare stopper rod is suspended to a high place through a lifting assembly; when the stopper rod needs to be replaced, the lifting mechanism is opened to open the self-locking mechanism to lift and remove the damaged stopper rod through the lifting assembly; at the same time, another group of lifting assemblies drops the spare stopper rod bracket to the lowest point, opens the lifting mechanism to open the self-locking mechanism and cooperates with the lifting sleeve of the stopper rod bracket to achieve closed locking, so that the spare stopper rod works, and the rapid replacement of the stopper rod is realized to ensure continuous casting of the tundish, improve casting efficiency, and ensure personnel safety at the same time.

The utility model relates to the technical field of casting, and discloses a sand core mold for casting a pump body, which comprises a box body, an upper mold plate is arranged in the box body, a main core is fixedly connected to the upper surface of the upper mold plate, a lower mold plate is arranged on the lower surface of the upper mold plate, and an auxiliary core is fixedly connected to the upper surface of the lower mold plate. A connecting assembly is arranged on the upper surface of the lower mold plate, a cold iron plate is slidably connected to the outer wall of the lower mold plate, a cooling pipe is arranged on the outer wall of the cold iron plate, a water inlet pipe is fixedly connected to one end of the cooling pipe, a water outlet pipe is fixedly connected to the other end of the cooling pipe, and a cooling fan is fixedly connected to the interior of the box body. According to the sand core mold, cooling liquid is circulated through the cooling pipe, meanwhile, circulation of gas in the flowing groove is accelerated through the cooling fan, so that the pump body is cooled, meanwhile, the fixing plate slides on the threaded rod to drive the mold to ascend, the effect of ejecting out the mold is achieved, the practicability of the sand core mold is improved, and the casting efficiency of the pump body is improved.

The utility model discloses a steelmaking continuous casting machine waste heat recycling device which comprises a conveying pipe and a heat exchanger, an annular blocking plate is arranged at the casting blank inlet end of the conveying pipe, a plurality of annular cavities are sequentially formed in the conveying pipe at intervals from the casting blank inlet end to the casting blank outlet end, and each annular cavity is connected with a cold air pipe. A plurality of air nozzles are uniformly distributed on the circumference of the side wall of the side, facing the annular blocking plate, of the annular cavity, cooling cavities are formed between the adjacent annular cavities and between the annular blocking plate and the annular cavities, a plurality of conveying rollers are arranged in the cooling cavities, an exhaust pipe is arranged on the side wall of the side, close to the annular blocking plate, of the cooling cavity, and a heat exchange pipe assembly is arranged in the heat exchanger. The exhaust pipe is communicated with an inlet of the heat exchange pipe assembly, a water supplementing opening is formed in the heat exchanger, an air compressor and a vortex tube which are communicated are arranged on the outer side of the conveying pipe, and a cold air outlet of the vortex tube is communicated with the cold air pipes. In conclusion, the casting device has the advantages of being small in heat loss, high in casting efficiency and high in heat recovery rate.

The application belongs to the technical field of metal lithium preparation, and discloses a lithium ingot casting system in a metal lithium closed environment and a lithium ingot casting method. The lithium ingot casting system is used for receiving high-temperature liquid metal lithium after distillation and purification to perform casting, cutting and bagging in a mold. The lithium ingot casting system comprises a glove box and a mold arranged in the glove box. The glove box is provided with a gas circulation module. The glove box is connected with the inside of the glove box by the gas circulation module and controls the gas environment in the glove box. The glove box is provided with at least two independent chambers, i.e. a preparation chamber and an operation chamber. At least one of the preparation chamber and the operation chamber is provided with a buffer chamber connected with the outside for material exchange. The buffer chamber is provided with detachable sealing structures on the ports connected with the outside and the inside for sealing, and the independent gas environment control is realized by connecting the gas circulation module. The mold is arranged in the operation chamber. The mold comprises a cooling support and a plurality of mold barrels arranged on the cooling support. The mold barrels are detachably connected with the cooling support.

The invention relates to the technical field of casting equipment, in particular to anti-gravity casting equipment applying an electromagnetic pump, which comprises a machine body, and a heat preservation furnace, a vacuum pump, a first heat preservation chamber and a second heat preservation chamber which are arranged on the machine body. A first mold and a second mold are arranged on the machine body, the first heat preservation chamber is communicated with the first mold, and the second heat preservation chamber is communicated with the second mold. According to the anti-gravity casting equipment applying the electromagnetic pump, the first heat preservation chamber and the second heat preservation chamber are arranged to be matched with the heat preservation furnace, and negative pressure environments are created in the heat preservation furnace, the first heat preservation chamber, the second heat preservation chamber, the first mold and the second mold, so that gas in the first mold and the second mold can be avoided; and by means of suction force of negative pressure in the heat preservation furnace, a cavity of the first mold and a cavity of the second mold can be filled with molten metal more smoothly, air holes are reduced, and the quality of formed castings is improved.

The invention belongs to the field of precision part machining, and particularly relates to a precision part casting convenient auxiliary tool which comprises a casting table, a plurality of positioning grooves evenly distributed in the length direction of the casting table are formed in the upper portion of the casting table, and feeding mechanisms are arranged at the positions, close to the positioning grooves, of the casting table. Sliding assemblies are arranged on the left side wall and the right side wall of the casting table correspondingly, a support is arranged on the two sliding assemblies jointly, a casting vessel used for containing molten liquid is rotationally arranged on the support, and an adjusting mechanism used for adjusting the inclination angle of the casting vessel is further arranged on the support. The feeding mechanism is provided with two vertical plates of an L-shaped structure, and the two vertical plates are fixedly arranged on the left side wall and the right side wall of the casting table respectively. The angle of the casting vessel can be easily moved and adjusted for casting work, manual carrying and casting are not needed, the operation difficulty is lowered, operation is more convenient and faster, molten liquid can enter a mold easily, and the casting efficiency is greatly improved.

The utility model relates to the technical field of tunnel casting, in particular to a casting system for a tunnel trolley, which comprises a trolley, a template and a casting pipeline, the template and the casting pipeline are positioned on the outer side of the trolley and are sequentially arranged along the length direction of the trolley, each side of the template is provided with three casting ports which are vertically arranged at intervals, and the top of the trolley is provided with three n-shaped frames along the width direction of the trolley. The two ends of the opening ends of the n-shaped frames are correspondingly and fixedly connected to the two ends of the trolley respectively, and the closed ends of the n-shaped frames on the two sides are higher than the uppermost pouring gate on the side portion of the formwork; an electric hoist device capable of moving in the length direction of the n-shaped frame is arranged at the closed end of the n-shaped frame, so that the casting pipeline can be pulled through the electric hoist device; according to the utility model, a radially arranged support rod in the prior art is replaced by the axially arranged n-shaped frames, all templates are supported by the three n-shaped frames, a barrier-free axial movement space is provided for pulling a casting pipeline, and the function of pulling the casting pipeline by equipment is realized by combining with an electric hoist device.

The utility model provides a sliding bearing babbitt metal casting tool, which belongs to the technical field of sliding bearing production equipment and comprises a supporting mechanism. Comprising a supporting frame, a casting ladle rotationally installed on the inner side of the supporting frame, a top frame fixedly installed on the top of the supporting frame, a driven gear fixedly connected with the casting ladle, and a driving gear installed on the surface of the supporting frame through a connecting rod bearing and engaged with the driven gear. And the angle positioning mechanism comprises a positioning component playing a damping role in rotation of the driven gear and a damping component used for adjusting the pouring angle of the casting ladle. According to the utility model, the driven gear is damped through the positioning part, and the driven gear is prevented from rotating too fast or suddenly, so that the stability of the casting ladle during pouring and casting is improved; the pouring angle of the casting ladle is positioned and adjusted through the damping component, the problem that fixed-angle pouring of a traditional casting ladle is difficult to achieve is solved, the effect of quantitative casting of alloy liquid is achieved, and then the casting efficiency of specific workpieces is improved.

The utility model discloses a quantitative casting mechanism for a magnesium ingot casting machine, which relates to the technical field of casting machines and comprises a casting machine body, a casting pump is arranged in the casting machine body, a casting pipe is arranged at the output end of the casting pump, an electromagnetic heater is arranged on the side wall of the casting pipe, and a casting transition ladle is arranged at the lower end of the casting pipe. A pouring transition ladle is arranged in the casting machine body, a pouring gate is arranged at the lower end of the pouring transition ladle, a servo motor is arranged in the casting machine body, the output end of the servo motor is fixedly connected with a threaded rod, the side wall of the threaded rod is in threaded connection with a sliding block, and the side wall of the sliding block is fixedly connected with a mounting plate. Secondly, the electromagnetic heater is adopted to heat the casting pipe to 650 DEG C or above, the complexity of manual pipe ironing is avoided, the casting pipe does not need to be dismantled, sent to be preheated and then returned to be installed, then the silicon carbide rod heater is utilized to heat the casting transition ladle to 650 DEG C or above, the casting transition ladle does not need to be preheated and can be started after being installed in place in a cold state, and the casting efficiency is high.

This utility model discloses a rotary worktable for a casting machine, comprising: a rotary table, a drive mechanism, a base, and several support components; the rotary table is provided with several workstations, and the rotary table is connected to the drive mechanism via transmission, and the rotary table is mounted on the base; the support components are located below the rotary table, and the support components include a support base, a support plate, a connecting seat, and rollers, the rollers are rotatably connected to the connecting seat, the connecting seat is mounted on the support plate, the support plate is mounted on the support base, and the rollers are in contact with the lower surface of the rotary table; this solution has the characteristics of improving casting efficiency, facilitating automated operation, and high stability.

The invention provides an aluminum alloy bar reducing casting device and method, and relates to the technical field of casting, the device comprises a tundish, a crystallizer, a structure control device and a traction device; the structure control device is composed of a first sleeve and a cooling module, a reducing cavity is formed in the first sleeve, the inner diameter of the reducing cavity is gradually reduced from the first end to the second end, and the reducing cavity is used for cooling and solidifying the solid-liquid aluminum alloy bar; the traction device comprises a traction head forming die and a power device, the traction head forming die is located at the second end of the reducing cavity, and the power device drives the traction head forming die to move horizontally to pull out the aluminum alloy bar; through plastic deformation and cooling solidification in the reducing cavity, internal defects such as shrinkage porosity of the aluminum alloy are eliminated, grains are refined, and the structure is more compact and uniform; the traction force is improved through tight connection of the traction head and the bar, and the stability of the continuous casting process is enhanced; and the traction rate is accurately adjusted by the power device, so that the aluminum alloy bar which is compact in structure and small and uniform in grain size can be obtained.

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 utility model relates to the technical field of automatic casting, and discloses an aluminum electrolysis anode automatic casting device which comprises universal wheels, a base, a groove and supporting columns. The base is movably arranged above the universal wheels, the universal wheels extend into the base, the groove is formed in the base, and the supporting column is fixedly arranged above the base; and the dismounting mechanism is movably arranged in the groove. The motor is started, the transmission shaft of the motor drives the threaded rod to rotate, so that the threaded sleeve drives the lifting table to move downwards, compared with a traditional device, the lifting table can descend by starting the motor, and the situation that metal is oxidized due to the fact that molten metal entering a cavity is high in flow speed and prone to splashing and sand washing is avoided; in the casting process, the molten metal in the mold is disturbed, vortexes and uncalm, the casting effect is poor, and casting is affected, and the height of the device is reduced, so that splashing generated during casting is reduced, and the casting efficiency is improved.

The invention discloses a full-automatic stainless steel part casting device, which belongs to the technical field of stainless steel casting, and comprises a conveying mechanism for conveying molds and stainless steel raw materials, and the conveying mechanism is provided with a casting mechanism for casting stainless steel parts and a butt joint mechanism. The conveying mechanism can achieve full-automatic intermittent conveying of stainless steel parts and dies, the full-automatic feeding and discharging process is achieved, and the automation degree is high; when an inner bidirectional threaded rod moves, a lifting plate drives a casting mold to ascend to be in butt joint with an injection cylinder for casting operation, then the casting mold descends and resets, and at the moment, a mold conveying belt, a lifting conveying belt and a material stirring tooth rotating disc do not act; when the mold conveying belt, the lifting conveying belt and the shifting tooth rotating disc move, the inner bidirectional threaded rod does not act, the lifting plate does not act, casting mold switching and stainless steel raw material feeding are carried out, all actions are automatically carried out in a coordinated mode, and the casting efficiency is high.

The invention relates to the technical field of casting equipment, and provides efficient casting equipment capable of reducing defects, the efficient casting equipment capable of reducing the defects comprises a workbench, a lifting assembly is arranged on the left side of the top of the workbench, a treatment shell is fixedly connected to the top of the lifting assembly, and a mounting plate is fixedly connected to the right side of the treatment shell; a motor is arranged at the top of the mounting plate, an output shaft is fixedly connected to the output end of the motor, a plurality of beating wheels are fixedly connected to the exterior of the output shaft, a fixing ring is fixedly connected to the inner wall of the treatment shell, two fixing rods are fixedly connected to each of the left side and the right side of the top of the fixing ring, and springs sleeve the fixing rods; a filter plate is slidably connected to the exterior of the fixing rod. According to the efficient casting equipment capable of reducing the defects, the motor drives the output shaft and the multiple beating wheels, the fixing rods and the springs are matched to be in linkage with the filter plate, and the effects of efficiently screening and filtering casting raw materials and removing impurities are achieved.

The utility model discloses a casting mould with good cooling performance, which relates to the technical field of casting moulds, and comprises a device main body, a circulating oil return mechanism is arranged at the bottom of the device main body, a mould sleeve is arranged at the top of the circulating oil return mechanism, and a material injection port is arranged on the outer wall of the mould sleeve. A cooling mechanism is installed on the outer wall of the device body and comprises an oil well pump, an oil conveying pipe, a fixing sleeve and an oil spraying opening, the oil well pump is installed on the outer wall of the device body, the oil conveying pipe is installed on the outer wall of the oil well pump, and the fixing sleeve is installed on the outer wall of the oil conveying pipe. The cooling mechanism and the oil well pump are symmetrically arranged with the central axis of the device body as the center, when the device is used, the oil well pump is started to extract cooling liquid in the collecting bin, the cooling liquid is evenly sprayed to the outer wall of the mold sleeve through the oil spraying opening, a casting mold in the mold sleeve is rapidly cooled and formed, and the mold casting efficiency is improved.

The utility model discloses a biopesticide applying device which comprises a cart and a stirring and dissolving tank, and the stirring and dissolving tank is fixedly installed on the top of the cart. The lifting table slides up and down on the top of the cart, the two telescopic assemblies and the two telescopic nozzle assemblies are symmetrically installed on the left side and the right side of the top of the lifting table, and the telescopic nozzle assemblies are installed at the bottoms of the telescopic assemblies; and the telescopic nozzle assembly is connected with the inner cavity of the stirring and dissolving tank through a water pump. The telescopic spray head assembly is opened through the telescopic assembly, a biopesticide solution in the stirring and dissolving tank is pumped into the telescopic spray head assembly to be applied in cooperation with the water pump, pesticide application and pest removal are carried out on crops, the stirring and dissolving tank in the device can contain a large number of biopesticide solutions at a time, and a user only needs to push the device to walk, so that pesticide application and pest removal are achieved. The purposes of reducing labor intensity and improving application efficiency are achieved.

The utility model provides an improved aluminum alloy hub die water-cooling side die which comprises a side die body, an upper insert, a lower insert, a connector, a threaded connector, a connecting pipe, a sealing ring and a water pipe, and the connector and the water pipe are connected together in a welding mode and then are respectively welded with the upper insert and the lower insert. The welded upper insert and lower insert assembly is placed in the corresponding insert grooves of the side die body, and a positioning pin penetrates through the positioning pin hole in the side die body, the first positioning pin hole of the upper insert and the second positioning pin hole of the lower insert to connect the side die body with the insert assembly. Then a bolt passes through a bolt stepped hole in the side die body, a first threaded hole of the upper insert and a second threaded hole of the lower insert, then the insert assembly is fixed to the side die body, and then a sealing ring and a threaded connector are connected with a stepped water outlet hole, with threads, of the upper insert and a stepped water inlet hole, with threads, of the lower insert respectively; and finally, the connecting pipe is connected with the screwed joint.

This utility model relates to the field of gear casting technology, specifically a gear casting device, including a pre-mold mechanism and a pitch adjustment mechanism mounted on the pre-mold mechanism. The pre-mold mechanism includes a casting base, a sand-filling cover mounted on top of the casting base, and multiple evenly distributed transverse grooves on the top of the casting base. A bottom tray plate is movably mounted in the transverse grooves, and a threaded tube is movably mounted on the bottom of the casting base. By installing the pre-mold mechanism on the worktable and the pitch adjustment mechanism within it, when producing large gears of different models, the mold of the gear teeth can be pre-adjusted without changing the casting center or the mold level. Once the pitch adjustment mechanism is selected and adjusted, molding sand can be filled into the changed mold cavity, thereby effectively improving the efficiency of large gear casting.

The application discloses a brake drum heating device, which comprises at least one heating station and two or more groups of moving workpiece conveying devices. The heating station is provided with a heating coil, and the moving workpiece conveying device is provided with a brake drum positioning mechanism, which can alternately and cyclically move the workpiece to the heating station for heating. The specific structure can be a three-station heating device, which further comprises a feeding station and a preheating station. The preheating station is provided with a preheating coil, and the feeding station, the preheating station and the heating station are fixed stations. The moving workpiece conveying device is divided into three groups, which respectively move and alternately circulate the feeding station, the preheating station and the heating station, and alternately and cyclically convey the workpiece to the preheating station and the heating station. The heating process comprises the following steps: feeding, descending and rotating, ascending and preheating, descending and rotating, ascending and heating, and taking the workpiece, so as to complete the heating. The three groups of workpiece conveying devices alternately complete the above process, realize the assembly line operation, and improve the production efficiency.

The utility model relates to a tunnel casting pipeline structure in the technical field of tunnel casting, which comprises a main casting pipe, a discharge end of the main casting pipe is provided with a three-way plate valve, and two discharge ends of the three-way plate valve are connected with branch casting pipes; the three-way plate valve comprises a feeding pipe, two symmetrically-arranged discharging pipes and a valve plate, the feeding pipe and the discharging pipes are of a Y-shaped structure, the middle of the valve plate is rotationally connected to the junction of the two discharging pipes, and elastic supporting pieces are arranged between the inner sides of the two discharging pipes and the outer section of the valve plate. Gear adsorption pieces are arranged on the inner sides of the two discharging pipes; compared with the prior art, the casting pipeline structure is additionally provided with the three-way plate valve and the branch casting pipes, so that the casting pipeline structure is provided with the two discharge ports, and the two discharge ports correspond to the template casting ports on the same side, so that the function of simultaneously casting the two side parts is realized, and the casting efficiency is further improved.

The utility model discloses a pit for casting, which is mainly applied to the technical field of casting and comprises a pit and a movable plate, the pit is poured by concrete, grooves are uniformly distributed at the bottom of the pit, exhaust pipes are arranged on the inner wall of the pit in the length direction, the exhaust pipes are aligned with the grooves, and vent holes are formed in the inner wall of the pit in the length direction. The vent hole is communicated with the exhaust pipe, and a clamping groove is formed in the inner wall of the pit in the length direction and used for fixing the movable plate. By applying the pit for casting, the exhaust of a sand mold is smoother, the exhaust burden of the sand mold and a sand core is reduced, the surface quality of a casting is obviously improved, the pit is convenient and flexible to use, the pit can be divided into a plurality of independent casting areas, the casting efficiency is effectively improved, and the production cost of an enterprise is reduced.

The invention discloses an anti-cracking valve casting and a machining method thereof. The anti-cracking valve casting is manufactured through a mold; smelting the materials; pouring and cooling the material; grinding and polishing; spraying a coating; according to the method, production and preparation of the valve casting are achieved through the steps such as preparation of the valve casting and packaging of the valve casting, in this way, rapid pouring and preparation of the whole valve casting can be achieved, and in the coating spraying step, through mixed spraying of PTFE paint and epoxy resin, the valve casting has the high anti-cracking characteristic, the overall service life is prolonged, and the service life of the valve casting is prolonged. Pouring equipment is arranged in the material pouring and cooling step, that is, flexible lifting pouring adjustment can be achieved through transmission of a screw rod and a movable base, and cooperation of pouring conversion and efficient cooling is achieved through cooperation with a multifunctional cooling device; and large-range spraying cooling and bubble auxiliary vibration elimination are achieved for the poured mold, and it is guaranteed that the valve casting is efficiently cooled and formed, and the forming quality is improved.