CN111593255A - High-toughness ledeburite malleable cast iron - Google Patents
High-toughness ledeburite malleable cast iron Download PDFInfo
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- CN111593255A CN111593255A CN202010426799.6A CN202010426799A CN111593255A CN 111593255 A CN111593255 A CN 111593255A CN 202010426799 A CN202010426799 A CN 202010426799A CN 111593255 A CN111593255 A CN 111593255A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/08—Making cast-iron alloys
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/08—Manufacture of cast-iron
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C37/00—Cast-iron alloys
- C22C37/10—Cast-iron alloys containing aluminium or silicon
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B14/00—Crucible or pot furnaces
- F27B14/08—Details peculiar to crucible or pot furnaces
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Abstract
The invention belongs to the technical field of malleable cast iron, in particular to high-toughness ledeburite malleable cast iron; the hot melting device comprises a hot melting box and an impurity removing mechanism; a box cover is arranged on the end face of the top of the hot melting box; the upper surface of the box cover is provided with a supercharger, and the supercharger is electrically connected with the controller through a lead; the cavity in the hot melting box is designed in an inclined mode; the end surface of the bottom of the hot melting box is fixedly connected with a motor; a screw rod is fixedly connected to the motor driving shaft; the invention mainly aims to solve the problems that the existing hot melting device is usually used for placing raw materials into the hot melting device for hot melting and then discharging gas doped in the raw materials in a stirring mode, but the mode cannot completely discharge the gas doped in the raw materials, so that a cavity exists in the poured malleable cast iron, and impurities in molten iron need to be manually removed in the process of hot melting of the raw materials, so that certain danger is caused to workers, and the impurities cannot be completely removed.
Description
Technical Field
The invention belongs to the technical field of malleable cast iron, and particularly relates to high-toughness ledeburite malleable cast iron.
Background
Cast iron is a generic term for alloys consisting mainly of iron, carbon and silicon. Cast iron can be divided into: gray cast iron, white cast iron, malleable cast iron, ball-milled cast iron, vermicular cast iron, and alloyed cast iron. The malleable cast iron white cast iron is obtained through graphitization and annealing treatment. Has higher strength, plasticity and impact toughness, and can partially replace carbon steel. Compared with grey cast iron, the malleable cast iron has better strength and plasticity, especially better low-temperature impact property, and better wear resistance and vibration damping property than common carbon steel. The cast iron is commonly called malleable iron and ductile cast iron because of its definite plasticity and toughness. Black-heart malleable cast iron is used for parts subjected to impact or vibration and torsion loads, is commonly used for manufacturing rear axles of automobiles, spring brackets, low-pressure valves, pipe joints, tool wrenches and the like, and for the introduction of ledeburite malleable cast iron, reference is made to the journal: zhao Yuhua, Zhang Li, Wang hong shun, Wang Zhi just, as cast malleable cast iron material and process research, hot working process 2005(11), however, there are still certain problems in the processing course of the malleable cast iron at present, include the following aspects specifically:
a hot melting device for hot melt malleable cast iron among the prior art often puts into the raw materials hot melt in the hot melting device, then adopts the mode of stirring to discharge the gas of adulteration in the raw materials, however this kind of mode can't discharge the gas of adulteration in the raw materials completely, thereby make the malleable cast iron after the pouring have the cavity in vivo, still need the manual work to clear away the impurity in the molten iron at the in-process of raw materials hot melt simultaneously, thereby can cause certain danger to the staff, the incomplete problem is clear away to impurity simultaneously.
There are some proposals for malleable ledeburite cast iron in the prior art, such as patent No. 201610465690.7 entitled malleable ledeburite cast iron with high toughness, which does not eliminate and remove impurities from the raw materials during hot melting in the process of manufacturing malleable cast iron, thereby causing the problems of poor performance and quality of the manufactured malleable cast iron,
in view of the above, in order to overcome the above technical problems, the present inventors have designed and developed a high-toughness ledeburite malleable cast iron, and made a special hot-melting device, so as to solve the above technical problems.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides high-toughness ledeburite malleable cast iron, which is mainly used for solving the problems that the existing hot melting device is usually used for placing raw materials into the hot melting device for hot melting, and then the gas doped in the raw materials is discharged in a stirring mode, but the gas doped in the raw materials cannot be completely discharged in the mode, so that a cavity exists in the poured malleable cast iron, and meanwhile, impurities in molten iron need to be manually removed in the hot melting process of the raw materials, so that certain danger is caused to working personnel, and simultaneously, the impurities are not completely removed.
The technical scheme adopted by the invention for solving the technical problems is as follows: a high toughness ledeburite malleable cast iron, the manufacturing process of the malleable cast iron comprises the following steps:
s1: selecting 2.5-3.5 parts of carbon, 1.5-2.5 parts of silicon, 2-3 parts of manganese, 0.5-1 part of phosphorus, 0.5-1 part of sulfur and the balance of iron as raw materials for preparing malleable cast iron for later use; the ledeburite malleable cast iron prepared by the raw materials has stronger toughness and stronger mechanical strength;
s2: firstly, removing impurities from the raw materials selected in S1, and after the impurities are removed, sequentially putting the raw materials into a crushing device for crushing treatment, wherein the crushing degree of the raw materials is 60-80 meshes; by crushing the raw materials, the mixing degree of the raw materials can be improved;
s3, sequentially putting the crushed raw materials in the step S2 into a hot melting device, starting the hot melting device, gradually melting the granular raw materials under the influence of high temperature of the hot melting device after the granular raw materials are injected into the hot melting device, and controlling the motor to rotate circularly by the controller after the granular raw materials are melted;
s4: in the process of rotating the motor in the step S3, the expansion plate in the hot melting device can be driven to slide up and down in the hot melting device, and the hot-melted liquid can be pressed into the flow grooves on both sides, and the hot solution flowing into the flow grooves flows into the cavity of the hot melting device through the liquid groove;
s5: taking out the liquid raw material after the hot melting of the raw material in the S4 is finished, introducing the liquid raw material into a mold to be poured for pouring, and obtaining malleable cast iron after the pouring of the solution is finished;
the hot melting device comprises a hot melting box and an impurity removing mechanism; a box cover is arranged on the end face of the top of the hot melting box; the upper surface of the box cover is provided with a supercharger, and the supercharger is electrically connected with the controller through a lead; the cavity in the hot melting box is designed in an inclined mode; the end surface of the bottom of the hot melting box is fixedly connected with a motor, and the motor is electrically connected with a controller through a lead; a lead screw is fixedly connected to the motor driving shaft and extends into the cavity of the hot melting box; the upper surface of the screw rod is fixedly connected with a storage box, and defoaming agents are contained in the storage box; a circular groove is formed in the inner wall of the screw rod and is communicated with the material storage box; the inner wall of the circular groove is provided with uniformly arranged slotted holes, and the slotted holes are communicated with the inner cavity of the hot melting box; the bottom of the hot melting box is provided with an impurity removing mechanism which is rotationally connected with the lead screw; the impurity removing mechanism comprises an expansion plate; six arc-shaped support plates extend out of the outer surface of the expansion plate; a sliding plate is connected in the inner wall of each arc-shaped support plate in a sliding manner; sliding grooves are formed in the inner wall of the hot melting box and are distributed uniformly, and sliding blocks are connected in the sliding grooves in a sliding mode; each sliding block is fixedly connected with the sliding plate; arc grooves which are uniformly distributed are formed in the inner wall of the expansion plate between every two arc support plates, and the aperture of each arc groove is sequentially increased; uniformly arranged chutes are formed in the inner wall of the hot melting box at the opposite side of each arc-shaped chute, and the chutes are all designed in an inclined manner; notches which are uniformly distributed are formed in the inner wall of the top of the launder and are communicated with the inner cavity of the hot melting box; liquid tanks which are uniformly distributed are arranged in the bottom of each flow tank and the inner wall of the hot melting box and are communicated with the hot melting box;
when the hot melting device works, the raw materials are usually put into the hot melting device for hot melting, then the gas doped in the raw materials is discharged in a stirring mode, however, the gas doped in the raw materials cannot be completely discharged in the mode, so that a cavity exists in the poured malleable cast iron, meanwhile, impurities in the molten iron are manually removed in the process of hot melting of the raw materials, certain danger is caused to workers, and the impurities are not completely removed at the same time. When the hot melting device manufactured by the invention is used, firstly, raw materials are put into a hot melting box, simultaneously, a controller controls a supercharger to apply pressure to the hot melting box, then, the hot melting device is started, the hot melting time of the raw materials can be accelerated under the pressure action of the supercharger, simultaneously, the hot melting degree of the raw materials can also be improved, when the raw materials are completely melted by the hot melting device, the controller controls the supercharger to stop supercharging and control the supercharger to slowly exhaust air, simultaneously, the controller controls a motor to rotate, a defoaming agent in a material storage box can be thrown into a round groove of a lead screw in the rotating process of the motor, the defoaming agent entering the round groove enters the hot melting box through evenly arranged slotted holes, the generation of bubbles during hot melting of the molten iron can be reduced after the defoaming agent is mixed with the molten iron, and simultaneously, an impurity removing mechanism can be driven to slide upwards in the rotating process of the lead screw driven by the motor, because the sliding plates sliding in the arc-shaped support plates fixedly connected to the expansion plate are fixedly connected with the sliding blocks in the sliding grooves, the sliding plates are stretched outwards in the upward movement process of the expansion plate, the impurity removing mechanism can be prevented from rotating in the process, so that the impurity removing process of the molten iron is influenced, the molten iron can be pushed to flow upwards in the upward movement process of the expansion plate, part of the molten iron can fall to the bottom of the hot melting box through the cavity between the arc-shaped support plates in the upward flow process of the molten iron, the molten iron can be overturned in the downward falling process of the molten iron, residual gas in the molten iron can be overturned in the process, gas can be pumped out in the air pumping process matched with the supercharger, part of the molten iron can flow into the flow grooves through the notches in the upward flow process of the molten iron, the overturning degree of the molten iron can be improved due to the inclined design of the flow grooves, and the gas in the molten iron can be better overturned, because the trough is communicated with the hot melting box through the liquid trough, liquid in the trough can flow into the hot melting box through the liquid trough, when the sliding plate drives the sliding block to slide to the top of the trough, the controller controls the motor to rotate reversely, the impurity removing mechanism can be driven to move downwards in the process of rotating reversely by the motor, the expansion plate can extrude the molten iron downwards in the process of sliding downwards by the impurity removing mechanism, when the molten iron is extruded, the molten iron can flow upwards through a gap of the impurity removing mechanism, the power potential energy of the molten iron can be improved in the process of flowing upwards by the molten iron, the molten iron on the impurity removing mechanism can be impacted, so that bubbles in the molten iron can be dispersed, the gas content in the molten iron can be reduced, and because the arc-shaped grooves which are uniformly distributed are arranged in the inner wall of the expansion plate, in the process of extruding body fluid by the expansion plate, the molten iron can flow into the upper part of the impurity removing mechanism through the arc-, and simultaneously, the raw materials condensed in the molten iron can be dispersed.
Preferably, each arc-shaped support plate is fixedly connected with an elastic metal filter screen in a pairwise manner, and the elastic metal filter screens are in a folded state in an initial state; the other end of each elastic metal filter screen is fixedly connected with the sliding plate;
when the iron liquid filtering device works, the elastic metal filter screens fixedly connected with the arc-shaped supporting rods are fixedly connected with the sliding plate and can be expanded outwards in the process that the sliding plate moves upwards, the elastic metal filter screens can be driven to move upwards and expand outwards when the sliding plate expands outwards, molten iron can be sieved and leaked in the process, residual gas in the molten iron can be leaked and sieved to be broken in the process, so that the gas content in the molten iron can be further reduced, meanwhile, the molten iron can be filtered once, raw material blocks solidified in the molten iron can be scattered, the quality of cast iron is prevented from being influenced by the existence of the raw material blocks, impurities in the molten iron can be filtered, so that the purity degree of the molten iron is further improved, and because the elastic metal filter screens are in a folded state in the initial state, the mesh openings of the elastic metal filter screens cannot be enlarged in the process that the elastic metal filter screens move upwards and expand, thereby preventing the leakage of impurities from the mesh opening.
Preferably, every two arc-shaped support plates are fixedly connected with a support rod, and the elastic metal filter screen penetrates through the support rods; the support rods are fixedly connected with the plug-in rods which are uniformly arranged between every two support rods;
the during operation, because all linked firmly the bracing piece between the arc branch, when the upwards sieve of elastic metal filter screen leaks the molten iron, the backup pad can support elastic metal filter screen, thereby reduce the resistance that elastic metal filter screen bore, prevent that elastic metal filter screen from taking place deformation, can also improve the degree of upset molten iron simultaneously, thereby improve the pure degree of molten iron, because link firmly the inserted bar of evenly arranging between the bracing piece, when elastic metal filter screen rebound, the inserted bar can further improve the supporting role to elastic metal filter screen, thereby further prevent that elastic metal filter screen from taking place deformation.
Preferably, a telescopic rod is fixedly connected between every two sliding plates on the opposite side of each supporting rod, and the telescopic rods are fixedly connected with the elastic metal filter screen part;
the during operation, because the slide all links firmly the telescopic link between two liang, can drive the telescopic link at the in-process of slide rebound and expand to both sides, can shakeout the elastic metal filter screen to both sides at the in-process of telescopic link expansion, can prevent at this in-process that the elastic metal filter screen is in fold condition, the influence is to the sieve hourglass process of molten iron.
Preferably, the inner wall of each launder is fixedly connected with metal arc plates which are uniformly arranged, and the metal arc plates are arranged in a staggered manner; the upper surface of each metal arc-shaped plate is fixedly connected with metal choked flow rods which are uniformly arranged, and the metal choked flow rods are arranged in a staggered manner;
the during operation, because metal arc upper surface links firmly the metal choked flow pole of evenly arranging, when the metal arc was flowed through to the molten iron, the metal choked flow pole can divide into a plurality of tributaries with the molten iron, can break away the gas in the molten iron at this in-process, can also break the raw material piece in the molten iron simultaneously, because the metal choked flow pole is the alternating expression design to can be more comprehensive carry out the branch to the molten iron, thereby can improve the reposition of redundant personnel degree to the molten iron.
Preferably, an elastic metal filter belt is rotatably connected in the inner wall of the launder below each metal arc plate through a motor, and the elastic metal filter belt is designed to be inclined; a collecting tank is arranged in the inner wall of the hot melting box at one side of each elastic metal filter belt, which is opposite to the other side, and the collecting tank corresponds to the elastic metal filter belts; a metal filter plate is fixedly connected in each collecting tank; each collecting groove is communicated with a flow groove; a collecting valve is arranged in the inner wall of the hot melting box at one side of each collecting groove opposite to the other side;
when the iron liquid collecting tank works, impurities and coagulation blocks in the iron liquid can be flushed into the flow groove in the process that the elastic metal filter screen moves upwards, when the impurities and the coagulation blocks flow through the elastic metal filter belt, the impurities and the coagulation blocks in the iron liquid can be retained on the elastic metal filter belt by the elastic metal filter belt, then the motor drives the elastic metal filter belt to rotate, the impurities and the coagulation blocks can be transferred into the iron liquid collecting tank, the impurities and the coagulation blocks in the iron liquid can be removed in the process, so that the purity degree of the iron liquid can be improved, the elastic metal filter belt is in an inclined design, so that excessive iron liquid can be prevented from flowing into the filter tank, as the metal filter plate is fixedly connected in the filter tank, when the iron liquid and the impurities flow into the filter tank, the iron liquid can flow into the bottom of the filter tank through the metal filter plate, and the impurities and the coagulation blocks can be accumulated on the metal filter plate, when the impurities on the metal filter plate are accumulated too much, the collecting valve is opened to collect the impurities.
The invention has the following beneficial effects:
1. according to the invention, the elastic metal filter screen is arranged, the elastic metal filter screen can be driven to move upwards and expand outwards when the sliding plate expands outwards, molten iron can be sieved in the process, residual gas in the molten iron can be leaked and sieved out in the process, so that the gas content in the molten iron can be further reduced, meanwhile, the molten iron can be filtered once along with the molten iron, raw material blocks solidified in the molten iron can be dispersed, the quality of cast iron is prevented from being influenced by the existence of the raw material blocks, impurities in the molten iron can be filtered, and the purity degree of the molten iron is further improved.
2. According to the invention, by arranging the elastic metal filter belt, when impurities and coagulum flow through the elastic metal filter belt, the impurities and coagulum in the molten iron can be retained on the elastic metal filter belt by the elastic metal filter belt, then the elastic metal filter belt is driven by the motor to rotate, the impurities and coagulum can be transferred into the collecting tank, and the impurities and coagulum in the molten iron can be removed in the process, so that the purity degree of the molten iron can be improved, and the elastic metal filter belt is designed in an inclined manner, so that excessive molten iron can be prevented from flowing into the filter tank.
Drawings
The invention will be further explained with reference to the drawings.
FIG. 1 is a process flow diagram of the present invention;
FIG. 2 is a main body view of the heat stake device of the present invention;
FIG. 3 is a cross-sectional view of the heat stake device of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is an enlarged view of a portion of FIG. 3 at B;
FIG. 6 is a front view of the trash removal mechanism of the present invention;
in the figure: the hot melting box comprises a hot melting box 1, a box cover 11, a supercharger 12, a motor 13, a lead screw 14, a storage box 15, a circular groove 16, a slotted hole 17, a sliding groove 18, a sliding block 19, a trough 191, a notch 192, a liquid trough 193, a metal arc-shaped plate 194, a metal flow blocking rod 195, an elastic metal filter belt 196, a collecting groove 197, a metal filter plate 198, a collecting valve 199, an impurity removing mechanism 2, an expansion plate 21, an arc-shaped support plate 22, a sliding plate 23, an arc-shaped groove 24, an elastic metal filter screen 241, a support rod 25 and an expansion rod.
Detailed Description
A high toughness ledeburite malleable cast iron according to an embodiment of the present invention will be described below with reference to fig. 1 to 6.
As shown in fig. 1 to 6, a high toughness ledeburite malleable cast iron according to the present invention is manufactured by a process comprising the steps of:
s1: selecting 2.5-3.5 parts of carbon, 1.5-2.5 parts of silicon, 2-3 parts of manganese, 0.5-1 part of phosphorus and 0.5-1 part of sulfur as well as iron as raw materials for preparing malleable cast iron for later use; the ledeburite malleable cast iron prepared by the raw materials has stronger toughness and stronger mechanical strength;
s2: firstly, removing impurities from the raw materials selected in S1, and after the impurities are removed, sequentially putting the raw materials into a crushing device for crushing treatment, wherein the crushing degree of the raw materials is 60-80 meshes; by crushing the raw materials, the mixing degree of the raw materials can be improved;
s3, sequentially putting the crushed raw materials in the step S2 into a hot melting device, starting the hot melting device, gradually melting the granular raw materials under the influence of high temperature of the hot melting device after the granular raw materials are injected into the hot melting device, and controlling the motor 13 to rotate circularly by the controller after the granular raw materials are melted;
s4: in the process of rotating the motor 13 in S3, the expansion plate 21 in the hot melting device can be driven to slide up and down in the hot melting device, and the hot melted liquid can be pressed into the flow grooves 191 on both sides, and the hot solution flowing into the flow grooves 191 flows into the cavity of the hot melting device through the liquid groove 193;
s5: taking out the liquid raw material after the hot melting of the raw material in the S4 is finished, introducing the liquid raw material into a mold to be poured for pouring, and obtaining malleable cast iron after the pouring of the solution is finished;
the hot melting device comprises a hot melting box 1 and an impurity removing mechanism 2; the box cover 11 is arranged on the end face of the top of the hot melting box 1; the upper surface of the box cover 11 is provided with a supercharger 12, and the supercharger 12 is electrically connected with a controller through a lead; the cavity in the hot melting box 1 is designed in an inclined mode; the end face of the bottom of the hot melting box 1 is fixedly connected with a motor 13, and the motor 13 is electrically connected with a controller through a lead; a driving shaft of the motor 13 is fixedly connected with a lead screw 14, and the lead screw 14 extends into a cavity of the hot melting box 1; the upper surface of the screw rod 14 is fixedly connected with a material storage box 15, and defoaming agents are contained in the material storage box 15; a circular groove 16 is formed in the inner wall of the screw rod 14, and the circular groove 16 is communicated with the material storage box 15; slotted holes 17 which are uniformly distributed are formed in the inner wall of the circular groove 16, and the slotted holes 17 are communicated with the cavity in the hot melting box 1; the bottom of the hot melting box 1 is provided with an impurity removing mechanism 2, and the impurity removing mechanism 2 is rotationally connected with a lead screw 14; the impurity removing mechanism 2 comprises an expansion plate 21; six arc-shaped support plates 22 extend out of the outer surface of the expansion plate 21; a sliding plate 23 is connected in the inner wall of each arc-shaped support plate 22 in a sliding manner; sliding grooves 18 which are all arranged are formed in the inner wall of the hot melting box 1, and sliding blocks 19 are all connected in the sliding grooves 18 in a sliding manner; each sliding block 19 is fixedly connected with a sliding plate 23; arc-shaped grooves 24 which are uniformly distributed are formed in the inner wall of the expansion plate 21 between every two arc-shaped support plates 22, and the aperture of each arc-shaped groove 24 is sequentially increased; uniformly arranged chutes 191 are formed in the inner wall of the hot melting box 1 at the opposite side of each arc-shaped groove 24, and the chutes 191 are all designed in an inclined manner; notches 192 which are uniformly arranged are formed in the inner wall of the top of the runner 191, and the notches 192 are communicated with the cavity in the hot melting box 1; liquid tanks 193 which are uniformly distributed are arranged at the bottom of each flow groove 191 and the inner wall of the hot melting box 1, and the liquid tanks 193 are communicated with the hot melting box 1;
in the working process, the hot melting device for hot melting malleable cast iron in the prior art usually puts raw materials into the hot melting device for hot melting, and then discharges the gas doped in the raw materials in a stirring mode, but the mode can not completely discharge the gas doped in the raw materials, so that a cavity exists in the poured malleable cast iron, and meanwhile impurities in molten iron are manually removed in the process of hot melting the raw materials, so that certain danger is caused to workers, and the impurities are not completely removed at the same time, the hot melting device manufactured by the invention can push the molten iron into the trough 191 for backflow motion by driving the impurity removing mechanism 2 to move up and down by utilizing the lead screw 14, the gas in the molten iron can be discharged by pressurizing and exhausting the supercharger 12, and meanwhile, the elastic metal filter screen 241 can disperse the gas wrapped in the molten iron, so that the gas content in the molten iron can be further reduced, meanwhile, impurities in molten iron can be screened and removed, when the hot melting device manufactured by the invention is used, raw materials are firstly put into the hot melting box 1, the controller controls the supercharger 12 to apply pressure to the hot melting box 1, then the hot melting device is started, the hot melting time of the raw materials can be accelerated under the pressure action of the supercharger 12, the hot melting degree of the raw materials can be improved, when the raw materials are completely melted by the hot melting device, the controller controls the supercharger 12 to stop supercharging, controls the supercharger 12 to slowly exhaust air, controls the motor 13 to rotate, can throw the defoaming agent in the storage box 15 into the circular groove 16 of the lead screw 14 in the rotating process of the motor 13, the defoaming agent entering the circular groove 16 enters the hot melting box 1 through the uniformly arranged slotted holes 17, and can reduce the generation of bubbles during the hot melting of the molten iron after the defoaming agent is mixed with the molten iron, meanwhile, the impurity removing mechanism 2 can be driven to slide upwards in the process that the motor 13 drives the screw 14 to rotate, the sliding plates 23 which are fixedly connected with the expansion plate 21 and slide in the arc-shaped support plates 22 are fixedly connected with the sliding blocks 19 in the sliding grooves 18, the sliding plates 23 stretch outwards in the process that the expansion plate 21 moves upwards, the impurity removing mechanism 2 can be prevented from rotating in the process, so that the impurity removing process of the molten iron is influenced, the molten iron can be pushed to flow upwards in the process that the expansion plate 21 moves upwards, part of the molten iron can fall to the bottom of the hot melting box 1 through the cavities between the arc-shaped support plates 22 in the process that the molten iron flows downwards, the molten iron can be overturned in the process that the molten iron falls downwards, residual gas in the molten iron can be overturned out in the process, the gas can be pumped out in the process of matching with the supercharger 12, part of the molten iron can flow into the flow groove 191 through the notch 192 in the, because the chute 191 is designed to be inclined, the turning degree of the molten iron can be improved, and gas in the molten iron can be better turned out and discharged, because the chute 191 is communicated with the hot melting box 1 through the liquid tank 193, liquid in the chute 191 can flow into the hot melting box 1 through the liquid tank 193, when the sliding plate 23 drives the sliding block 19 to slide to the top of the sliding groove 18, the controller controls the motor 13 to reversely rotate, the impurity removing mechanism 2 can be driven to move downwards in the process that the motor 13 reversely rotates, the expanding plate 21 can be used for downwards extruding the molten iron in the process that the impurity removing mechanism 2 slides downwards, when the molten iron is extruded, the molten iron can upwards flow through the gap of the impurity removing mechanism 2, the power potential energy of the molten iron can be improved in the process that the molten iron upwards flows, the molten iron on the impurity removing mechanism 2 can be impacted, bubbles in the molten iron can be dispersed, and the gas content in the molten iron can be reduced, because the arc-shaped grooves 24 which are uniformly distributed are formed in the inner wall of the expansion plate 21, in the process that the expansion plate 21 extrudes body fluid, the molten iron can flow into the upper part of the impurity removing mechanism 2 through the arc-shaped grooves 24, so that the impact effect between the molten iron can be further improved in the process, and the condensed raw materials in the molten iron can be dispersed.
As an embodiment of the present invention, each of the arc-shaped support plates 22 is fixedly connected with an elastic metal filter screen 241, and the elastic metal filter screen 241 is in a folded state in an initial state; the other end of each elastic metal filter screen 241 is fixedly connected with the sliding plate 23;
when the iron liquid filtering device works, the elastic metal filter screens 241 fixedly connected with the arc-shaped supporting rods are fixedly connected with the sliding plate 23 and can be expanded outwards in the upward moving process of the sliding plate 23, the sliding plate 23 can drive the elastic metal filter screens 241 to move upwards and expand outwards when expanding outwards, molten iron can be filtered and leaked in the process, residual gas in the molten iron can be leaked and broken in the process, so that the gas content in the molten iron can be further reduced, meanwhile, the molten iron can be filtered for one time, raw material blocks solidified in the molten iron can be scattered, the quality of cast iron is prevented from being influenced by the existence of the raw material blocks, impurities in the molten iron can be filtered, so that the purity degree of the molten iron is further improved, because the elastic metal filter screens 241 are folded in the initial state, the mesh openings of the elastic metal filter screens 241 cannot be enlarged in the upward moving and expanding process of the elastic metal filter screens 241, thereby preventing the leakage of impurities from the mesh opening.
As an embodiment of the present invention, a support rod 25 is fixedly connected between each two arc-shaped support plates 22, and the elastic metal filter screen 241 is designed to penetrate through the support rods 25; plug-in rods which are uniformly arranged are fixedly connected between every two support rods 25;
the during operation, because all linked firmly bracing piece 25 between the arc branch, when the iron liquid was leaked to the sieve upwards at elastic metal filter screen 241, the backup pad can support elastic metal filter screen 241, thereby reduce the resistance that elastic metal filter screen 241 bore, prevent that elastic metal filter screen 241 from taking place deformation, can also improve the degree of upset iron liquid simultaneously, thereby improve the pure degree of iron liquid, because the inserted bar of evenly arranging has been linked firmly between the bracing piece 25, when elastic metal filter screen 241 rebound, the inserted bar can further improve the supporting role to elastic metal filter screen 241, thereby further prevent elastic metal filter screen 241 from taking place deformation.
As an embodiment of the invention, a telescopic rod 26 is fixedly connected between every two sliding plates 23 on the opposite side of each supporting rod 25, and the telescopic rods 26 are fixedly connected with the elastic metal filter screen 241;
during operation, because slide 23 all has linked firmly telescopic link 26 between two liang, can drive telescopic link 26 to the both sides expansion at slide 23 rebound in-process, can shakeout elastic metal filter screen 241 to both sides at the in-process of telescopic link 26 expansion, can prevent at this in-process that elastic metal filter screen 241 is in fold condition, the influence is to the sieve hourglass process of molten iron.
As an embodiment of the present invention, the inner wall of each runner 191 is fixedly connected with metal arc plates 194 which are uniformly arranged, and the metal arc plates 194 are arranged in a staggered manner; the upper surface of each metal arc plate 194 is fixedly connected with metal choked flow rods 195 which are uniformly arranged, and the metal choked flow rods 195 are arranged in a staggered manner;
the during operation, because metal arc 194 upper surface links firmly the metal choked bar 195 of evenly arranging, when the metal arc 194 is flowed through to the molten iron, metal choked bar 195 can divide into a plurality of tributaries with the molten iron, can break away the gas in the molten iron at this in-process, can also smash the raw material piece in the molten iron simultaneously, because metal choked bar 195 is the alternating expression design, thereby can be more comprehensive carry out the branch to the molten iron, thereby can improve the reposition of redundant personnel degree to the molten iron.
As an embodiment of the present invention, an elastic metal filter belt 196 is rotatably connected in the inner wall of the trough 191 below each metal arc plate 194 through a motor, and the elastic metal filter belt 196 is designed to be inclined; a collecting groove 197 is formed in the inner wall of the hot melting box 1 on the opposite side of each elastic metal filter belt 196, and the collecting groove 197 corresponds to the elastic metal filter belt 196; a metal filter plate 198 is fixedly connected in each collecting groove 197; each of the collection troughs 197 is in communication with a trough 191; a collecting valve 199 is arranged in the inner wall of the hot melting box 1 on the side, opposite to the collecting groove 197, of each collecting groove 197;
in the process of moving the elastic metal filter screen 241 upwards, impurities and condensation blocks in the molten iron can be flushed into the flow groove 191, when the impurities and the condensation blocks flow through the elastic metal filter belt 196, the impurities and the condensation blocks in the molten iron can be retained on the elastic metal filter belt 196 by the elastic metal filter belt 196, then the motor drives the elastic metal filter belt 196 to rotate, the impurities and the condensation blocks can be transferred into the collecting groove 197, the impurities and the condensation blocks in the molten iron can be removed in the process, so that the purity degree of the molten iron can be improved, as the elastic metal filter belt 196 is in an inclined design, excessive molten iron can be prevented from flowing into the filter groove, as the metal filter plate 198 is fixedly connected in the filter groove, when the molten iron and the impurities flow into the filter groove, the molten iron can flow into the bottom of the filter groove 198 and flow into the hot melting box 1 through the flow groove 191, impurities and clots accumulate on the frit 198, and when the impurities accumulate too much on the frit 198, the trap valve 199 is opened to collect the impurities.
The specific working process is as follows:
when the hot melting device manufactured by the invention is used, firstly, raw materials are put into the hot melting box 1, the controller controls the supercharger 12 to apply pressure to the hot melting box 1, then the hot melting device is started, when the raw materials are completely melted by the hot melting device, the controller controls the supercharger 12 to stop supercharging and controls the supercharger 12 to slowly exhaust air, the controller controls the motor 13 to rotate, the defoaming agent in the material storage box 15 can be thrown into the circular groove 16 of the lead screw 14 in the rotating process of the motor 13, the defoaming agent entering the circular groove 16 enters the hot melting box 1 through the uniformly arranged slotted holes 17, the generation of bubbles during hot melting of molten iron can be reduced after the defoaming agent is mixed with the molten iron, meanwhile, the impurity removing mechanism 2 can be driven to slide upwards in the rotating process of the lead screw 14 driven by the motor 13, and as the sliding plate 23 fixedly connected to the expansion plate 21 and sliding in the arc support plate 22 is fixedly connected with the sliding block 19 in the sliding groove 18, the sliding plate 23 is stretched outwards in the upward movement process of the expansion plate 21, the molten iron can be pushed to flow upwards in the upward movement process of the expansion plate 21, part of the molten iron can fall to the bottom of the hot melting box 1 through the cavity between the arc-shaped support plates 22 in the upward flow process of the molten iron, the molten iron can turn over in the downward falling process of the molten iron, part of the molten iron can flow into the trough 191 through the notch 192 in the upward flow process of the molten iron, the turnover degree of the molten iron can be improved due to the inclined design of the trough 191, the liquid in the trough 191 can flow into the hot melting box 1 through the trough 193 as the trough 191 is communicated with the hot melting box 1 through the trough 193, when the sliding plate 23 drives the sliding block 19 to slide to the top of the sliding groove 18, the controller controls the motor 13 to rotate reversely at the moment, the impurity removing mechanism 2 can be driven to move downwards in the reverse rotation process of the motor 13, the expansion plate 21 can be enabled to extrude the molten iron downwards in, after the iron liquid is extruded, the gap that the iron liquid can be through edulcoration mechanism 2 upwards flows, can improve the power potential energy of iron liquid at the in-process that the iron liquid upwards flows, can strike the iron liquid on edulcoration mechanism 2 to can break away the bubble in the iron liquid, because set up the arc wall 24 of evenly arranging in the expansion plate 21 inner wall, at the in-process that expansion plate 21 extrudees the body fluid, the iron liquid can flow in edulcoration mechanism 2 tops through arc wall 24.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. A high toughness ledeburite malleable cast iron, characterized in that the manufacturing process of the malleable cast iron comprises the following steps:
s1: selecting 2.5-3.5 parts of carbon, 1.5-2.5 parts of silicon, 2-3 parts of manganese, 0.5-1 part of phosphorus, 0.5-1 part of sulfur and the balance of iron as raw materials for preparing malleable cast iron for later use;
s2: firstly, removing impurities from the raw materials selected in S1, and after the impurities are removed, sequentially putting the raw materials into a crushing device for crushing treatment, wherein the crushing degree of the raw materials is 60-80 meshes;
s3, sequentially putting the crushed raw materials in the step S2 into a hot melting device, starting the hot melting device, gradually melting the granular raw materials under the influence of high temperature of the hot melting device after the granular raw materials are injected into the hot melting device, and controlling a motor (13) to rotate circularly by a controller after the granular raw materials are melted;
s4: in the S3 process that the motor (13) rotates, the expanding plate (21) in the hot melting device can be driven to slide up and down in the hot melting device, meanwhile, the liquid after hot melting can be pressed into the flow grooves (191) on the two sides, and the hot solution flowing into the flow grooves (191) flows into the cavity of the hot melting device through the liquid groove (193);
s5: taking out the liquid raw material after the hot melting of the raw material in the S4 is finished, introducing the liquid raw material into a mold to be poured for pouring, and obtaining malleable cast iron after the pouring of the solution is finished;
the hot melting device comprises a hot melting box (1) and an impurity removing mechanism (2); a box cover (11) is arranged on the end surface of the top of the hot melting box (1); the upper surface of the box cover (11) is provided with a supercharger (12), and the supercharger (12) is electrically connected with the controller through a lead; the cavity in the hot melting box (1) is designed in an inclined mode; the end face of the bottom of the hot melting box (1) is fixedly connected with a motor (13), and the motor (13) is electrically connected with a controller through a lead; a driving shaft of the motor (13) is fixedly connected with a lead screw (14), and the lead screw (14) extends into a cavity of the hot melting box (1); the upper surface of the screw rod (14) is fixedly connected with a storage box (15), and the storage box (15) is filled with a defoaming agent; a circular groove (16) is formed in the inner wall of the screw rod (14), and the circular groove (16) is communicated with the material storage box (15); slotted holes (17) which are uniformly distributed are formed in the inner wall of the circular groove (16), and the slotted holes (17) are communicated with the inner cavity of the hot melting box (1); the bottom of the hot melting box (1) is provided with an impurity removing mechanism (2), and the impurity removing mechanism (2) is rotatably connected with a lead screw (14); the impurity removing mechanism (2) comprises an expansion plate (21); six arc-shaped support plates (22) extend from the outer surface of the expansion plate (21); a sliding plate (23) is connected in the inner wall of each arc-shaped support plate (22) in a sliding manner; sliding grooves (18) which are uniformly distributed are formed in the inner wall of the hot melting box (1), and sliding blocks (19) are connected in the sliding grooves (18) in a sliding manner; each sliding block (19) is fixedly connected with a sliding plate (23); arc-shaped grooves (24) which are uniformly distributed are formed in the inner wall of the expansion plate (21) between every two arc-shaped support plates (22), and the aperture of each arc-shaped groove (24) is sequentially increased; uniformly arranged flow grooves (191) are formed in the inner wall of the hot melting box (1) on the side, opposite to each other, of each arc-shaped groove (24), and the flow grooves (191) are all designed in an inclined manner; notches (192) which are uniformly distributed are formed in the inner wall of the top of the runner (191), and the notches (192) are communicated with the inner cavity of the hot melting box (1); liquid tanks (193) which are uniformly distributed are arranged in the bottom of each flow tank (191) and the inner wall of the hot melting box (1), and the liquid tanks (193) are communicated with the hot melting box (1).
2. A high toughness ledeburite ductile cast iron according to claim 1 wherein: each arc-shaped support plate (22) is fixedly connected with an elastic metal filter screen (241) in a pairwise manner, and the elastic metal filter screens (241) are in a folded state in an initial state; and the other end of each elastic metal filter screen (241) is fixedly connected with the sliding plate (23).
3. A high toughness ledeburite ductile cast iron according to claim 2 wherein: supporting rods (25) are fixedly connected between every two arc-shaped supporting plates (22), and the elastic metal filter screen (241) penetrates through the supporting rods (25); every two of the support rods (25) are fixedly connected with plug-in rods which are uniformly arranged.
4. A high toughness ledeburite ductile cast iron according to claim 3 wherein: every bracing piece (25) one side of the back of the body all has linked firmly telescopic link (26) in slide (23) between two liang, and telescopic link (26) all link firmly with elastic metal filter screen (241) part.
5. A high toughness ledeburite ductile cast iron according to claim 1 wherein: the inner wall of each flow groove (191) is fixedly connected with uniformly arranged metal arc-shaped plates (194), and the metal arc-shaped plates (194) are arranged in a staggered manner; the upper surface of each metal arc-shaped plate (194) is fixedly connected with metal choke rods (195) which are uniformly arranged, and the metal choke rods (195) are arranged in a staggered manner.
6. A high toughness ledeburitic malleable cast iron, according to claim 5, wherein: an elastic metal filter belt (196) is rotationally connected in the inner wall of the flow groove (191) below each metal arc-shaped plate (194) through a motor, and the elastic metal filter belt (196) is designed to be inclined; a collecting groove (197) is formed in the inner wall of the hot melting box (1) on the opposite side of each elastic metal filter belt (196), and the collecting groove (197) corresponds to the elastic metal filter belts (196); a metal filter plate (198) is fixedly connected in each collecting groove (197); each collecting groove (197) is communicated with a flow groove (191); each collecting groove (197) is back to the back and is provided with a collecting valve (199) in the inner wall of the hot melting box (1).
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|---|---|---|---|---|
| JPS5867844A (en) * | 1981-10-16 | 1983-04-22 | Mazda Motor Corp | Spherical graphite cast iron excellent in tenacity and preparation thereof |
| WO2000004198A1 (en) * | 1998-07-14 | 2000-01-27 | Honda Giken Kogyo Kabushiki Kaisha | Fe ALLOY MATERIAL FOR THIXOCASTING AND METHOD FOR HEATING THE SAME |
| CN101463446A (en) * | 2008-12-22 | 2009-06-24 | 南车戚墅堰机车车辆工艺研究所有限公司 | Low-alloy white cast iron |
| CN101660084A (en) * | 2009-09-28 | 2010-03-03 | 上汽通用五菱汽车股份有限公司 | Engine camshaft chilled cast iron and manufacturing method thereof |
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2020
- 2020-05-19 CN CN202010426799.6A patent/CN111593255B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5867844A (en) * | 1981-10-16 | 1983-04-22 | Mazda Motor Corp | Spherical graphite cast iron excellent in tenacity and preparation thereof |
| WO2000004198A1 (en) * | 1998-07-14 | 2000-01-27 | Honda Giken Kogyo Kabushiki Kaisha | Fe ALLOY MATERIAL FOR THIXOCASTING AND METHOD FOR HEATING THE SAME |
| CN101463446A (en) * | 2008-12-22 | 2009-06-24 | 南车戚墅堰机车车辆工艺研究所有限公司 | Low-alloy white cast iron |
| CN101660084A (en) * | 2009-09-28 | 2010-03-03 | 上汽通用五菱汽车股份有限公司 | Engine camshaft chilled cast iron and manufacturing method thereof |
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Effective date of registration: 20210804 Address after: No. 599, Sunwu fifth road, Huimin Economic Development Zone, Binzhou City, Shandong Province, 251700 Applicant after: SHANDONG HUIYU AUTO PARTS Co.,Ltd. Applicant after: Shandong Guochuang Precision Machinery Co.,Ltd. Address before: 230000 room 221, science and technology innovation center, Taohua Industrial Park, intersection of Fanhua Avenue and feicui Road, Jingkai District, Hefei City, Anhui Province Applicant before: Jia Chunteng |
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