CN112935230A - Casting process of nodular cast iron - Google Patents
Casting process of nodular cast iron Download PDFInfo
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- CN112935230A CN112935230A CN202110047648.4A CN202110047648A CN112935230A CN 112935230 A CN112935230 A CN 112935230A CN 202110047648 A CN202110047648 A CN 202110047648A CN 112935230 A CN112935230 A CN 112935230A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
- B22D41/005—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like with heating or cooling means
- B22D41/01—Heating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D45/00—Equipment for casting, not otherwise provided for
- B22D45/005—Evacuation of fumes, dust or waste gases during manipulations in the foundry
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Abstract
The invention relates to the field of nodular cast iron casting, in particular to a nodular cast iron casting process, which comprises the steps of connecting a nodular cast iron casting device with an external power supply, opening a hydraulic rod, driving a fixed disc, a first connecting pipe and a connecting plate to move upwards, enabling the connecting plate to move into an inner cylinder, enabling the connecting plate to seal the inner cylinder, and enabling a limiting rod to be aligned with the fixed block.
Description
Technical Field
The invention relates to the field of nodular cast iron casting, in particular to a casting process of nodular cast iron.
Background
The ductile iron is a high-strength cast iron material developed in the 20 th century and the fifties, the comprehensive performance of the ductile iron is close to that of steel, and the ductile iron is successfully used for casting parts which are complex in stress and high in requirements on strength, toughness and wear resistance based on the excellent performance of the ductile iron. Nodular cast iron has rapidly evolved to a very widely used cast iron material second only to gray cast iron. The term "steel is replaced by iron" is mainly used for nodular cast iron. The nodular cast iron is spheroidized and inoculated to obtain spheroidal graphite, so that the mechanical properties of the cast iron are effectively improved, and particularly, the plasticity and toughness are improved, so that the strength of the cast iron is higher than that of carbon steel.
When molten steel just enters a ladle, the heat storage capacity of the wall of the ladle is extremely high, more heat is lost from a ladle lining, the molten steel in the ladle is thick, the fluidity is reduced, when natural gas is combusted in the ladle to preheat the interior of the ladle, part of smoke dust generated after the natural gas is combusted adheres to the inner side wall of the ladle, and at the moment, the temperature of the inner side wall of the ladle is high, so that the smoke dust is difficult to clean, and the use of people is influenced.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a casting process of nodular cast iron.
The technical scheme adopted by the invention for solving the technical problems is as follows: a casting process of nodular cast iron comprises the following steps:
s1: the method comprises the following steps of connecting a nodular cast iron casting device with an external power supply, opening a hydraulic rod, enabling the hydraulic rod to drive a fixed disc, a first connecting pipe and a connecting plate to move upwards, enabling the connecting plate to move into an inner cylinder, enabling the connecting plate to seal the inner cylinder, and enabling a limiting rod to be aligned with a fixed block;
s2: the fixed disc is grabbed, the fixed disc drives the first connecting pipe, the second connecting pipe and the limiting rod to rotate, the spherical end of the hydraulic rod rotates in the clamping groove, meanwhile, the first corrugated pipe rotates at the bottom end of the first connecting pipe, the second corrugated pipe rotates at the bottom end of the second connecting pipe, the limiting rod enters the inside of the fixed block, the spherical limiting rod is in contact with the mounting pipe, the mounting pipe enters the inside of the limiting rod, one limiting rod is communicated with the communicating pipe, and the other limiting rod is communicated between the outer barrel and the inner barrel;
s3: the natural gas and the air enter the box body through the air inlet pipe, the natural gas ignites the air in the heating box in the box body to heat the air in the heating box, the heated air in the heating box expands to enter the heating pipe, the first corrugated pipe, the first connecting pipe and the connecting plate, the hot air is sprayed out through the spray head to be counted in the inner barrel, the hot air continuously rises in the inner barrel, meanwhile, the air temperature is continuously reduced, the air above the inner barrel enters the fixed pipe, and the air in the inner barrel moves downwards through the fixed pipe to enter the second connecting pipe;
s4: when hot air moves in the first connecting pipe and enters a limiting rod and the connecting pipes to enter a space between the outer cylinder and the inner cylinder, the hot air enters the space between the outer cylinder and the inner cylinder, the partition board blocks the movement of the hot air to enable the hot air to spirally move upwards along the side wall of the partition board, the hot air simultaneously heats two ends of the inner cylinder and reduces the preheating time of the main body, the hot air between the inner cylinder and the outer cylinder enters the interior of the second connecting pipe through the communicating pipe and the other limiting rod to enable the air to enter the interior of the bottom end of the heating box in the second connecting pipe, the second corrugated pipe and the circulating pipe, and the air continues to move upwards after being heated in, therefore, hot air continuously and circularly moves among the inner cylinder, the inner cylinder and the outer cylinder, the temperature inside and outside the main body is continuously raised, energy is saved, heat waste is reduced, smoke dust generated by combustion of natural gas is prevented from entering the main body, and the temperature of molten steel entering the main body is prevented from being reduced;
the nodular cast iron casting equipment in the S1 comprises a support, a main body, a lifting mechanism, a heating mechanism, a connecting mechanism, an air injection mechanism and a heat preservation mechanism, wherein the main body used for conveying and storing molten steel is rotatably connected to the inside of the support, and the air injection mechanism used for heating the inside of the main body is slidably connected to the inside of the main body; the side wall of the air injection mechanism is provided with the heat preservation mechanism for heating the main body packing; the bottom end of the air injection mechanism is provided with the lifting mechanism for driving the air injection mechanism to continuously move up and down, and the joint of the lifting mechanism and the air injection mechanism is provided with the connecting mechanism for conveying and circulating hot air; the bottom end of the connecting mechanism is provided with the heating mechanism for heating air, and the top end of the heating mechanism is provided with the lifting mechanism.
Preferably, the main body comprises an outer cylinder, a partition plate and an inner cylinder, the inner part of the support is rotatably connected with the outer cylinder, the inner part of the outer cylinder is fixedly connected with the inner cylinder, and the spiral partition plate is arranged between the outer cylinder and the inner cylinder.
Preferably, the air injection mechanism comprises a spray head, a connecting plate and a fixed pipe, the inner side wall of the inner cylinder is in sliding connection with the connecting plate, the spray head is installed inside the connecting plate, the fixed pipe is fixedly connected inside the connecting plate, and the fixed pipe extends into the inner cylinder.
Preferably, the heat insulation mechanism comprises a fixed block, a limiting rod, an installation pipe, a floating ball and a connecting pipe; the edge of one end of the outer cylinder is symmetrically provided with the fixed blocks, the mounting pipes are arranged in the fixed blocks, one of the mounting pipes is arranged between the outer cylinder and the inner cylinder, the other end of the outer cylinder is provided with the connecting pipe, and the connecting pipe is communicated with the other mounting pipe; the inner part of the fixed block is slidably connected with the hollow limiting rod, and the inner part of the limiting rod with one spherical end is clamped and slidably connected with the floating ball; the limiting rod is connected with the inside of the limiting rod in a sliding mode, and the limiting rod abuts against the floating ball.
Preferably, the connecting mechanism comprises a clamping groove, a fixed disc, a first connecting pipe, a second connecting pipe and a valve, the first connecting pipe is fixedly connected to the middle of the bottom surface of the connecting plate, and the valve is mounted on the side wall of the first connecting pipe; the first connecting pipe is communicated with the spray head, and the second connecting pipe is arranged in the first connecting pipe; the top end of the second connecting pipe is fixedly connected with the fixed pipe and one limiting rod, and the top end of the first connecting pipe is connected with the other limiting rod; the bottom end of the first connecting pipe is fixedly connected with the fixed disc, and the inside of the fixed disc is provided with an annular clamping groove.
Preferably, the lifting mechanism comprises a hydraulic rod, a first corrugated pipe and a second corrugated pipe, the top end of the hydraulic rod is rotatably connected with the inside of the clamping groove, the bottom end of the second connecting pipe is rotatably connected with and clamped with the second corrugated pipe, and the bottom end of the first connecting pipe is clamped with and rotatably connected with the first corrugated pipe.
Preferably, the heating mechanism comprises an air inlet pipe, a box body, a heating box, a heating pipe, a circulating pipe and an exhaust pipe; the hydraulic rod is installed on the top surface of the box body, the exhaust pipe is installed on the top end of the box body, the air inlet pipe is installed on the side wall of the box body, and the heating box is installed inside the box body; the heating pipe and the circulating pipe are arranged in the heating box, the heating pipe is communicated with the first corrugated pipe, and the circulating pipe is connected with the second corrugated pipe.
The invention has the beneficial effects that:
according to the casting process of the nodular cast iron, when the main body is preheated, the lifting mechanism is opened, the lifting mechanism drives the air injection mechanism to move upwards and clamp the inside of the main body, the heating mechanism is opened, natural gas burns and heats air in the heating mechanism, the air expands and moves upwards and is sprayed out through the air injection mechanism, the hot air continuously enters the inside of the main body, meanwhile, the air in the main body is compressed to move upwards, when the hot air rises to the top end of the main body, the air with the reduced temperature enters the bottom end of the heating mechanism again to be heated, the hot air continuously heats and moves circularly in the main body, the inside of the main body is heated, meanwhile, dust generated after the natural gas burns does not enter the inside of the main body, smoke and dust is prevented from being left in the inside of the main body, and the use.
According to the casting process of the nodular cast iron, when hot air continuously and circularly moves in the main body, part of the hot air enters the lining of the main body through the heat insulation mechanism, so that the hot air continuously and circularly moves in the lining of the main body, the preheating efficiency of the main body is improved, the temperature of the lining of the main body is continuously increased, the phenomenon that the temperature of molten steel entering the main body is rapidly reduced is avoided, and the casting process is convenient for people to use.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of a nodular cast iron casting apparatus according to the present invention;
FIG. 2 is a schematic view of the main structure shown in FIG. 1;
FIG. 3 is a schematic view of the internal structure of the case shown in FIG. 1;
FIG. 4 is an enlarged view of the structure shown at A in FIG. 3;
FIG. 5 is a schematic view of the internal structure of the main body shown in FIG. 1;
fig. 6 is an exploded view of the stop rod and the fixing block shown in fig. 5.
In the figure: 1. the device comprises a bracket, 2, a main body, 21, an outer cylinder, 22, a partition board, 23, an inner cylinder, 3, a lifting mechanism, 31, a hydraulic rod, 32, a first corrugated pipe, 33, a second corrugated pipe, 4, a heating mechanism, 41, an air inlet pipe, 42, a box body, 43, a heating box, 44, a heating pipe, 45, a circulating pipe, 46, an exhaust pipe, 5, a connecting mechanism, 51, a clamping groove, 52, a fixed disc, 53, a first connecting pipe, 54, a second connecting pipe, 55, a valve, 6, an air injection mechanism, 61, a nozzle, 62, a connecting plate, 63, a fixed pipe, 7, a heat preservation mechanism, 71, a fixed block, 72, a limiting rod, 73, a mounting pipe, 74, a floating ball, 75 and a communicating.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, the casting process of nodular cast iron according to the present invention includes the following steps:
s1: the method comprises the following steps of connecting a nodular cast iron casting device with an external power supply, opening a hydraulic rod, enabling the hydraulic rod to drive a fixed disc, a first connecting pipe and a connecting plate to move upwards, enabling the connecting plate to move into an inner cylinder, enabling the connecting plate to seal the inner cylinder, and enabling a limiting rod to be aligned with a fixed block;
s2: the fixed disc is grabbed, the fixed disc drives the first connecting pipe, the second connecting pipe and the limiting rod to rotate, the spherical end of the hydraulic rod rotates in the clamping groove, meanwhile, the first corrugated pipe rotates at the bottom end of the first connecting pipe, the second corrugated pipe rotates at the bottom end of the second connecting pipe, the limiting rod enters the inside of the fixed block, the spherical limiting rod is in contact with the mounting pipe, the mounting pipe enters the inside of the limiting rod, one limiting rod is communicated with the communicating pipe, and the other limiting rod is communicated between the outer barrel and the inner barrel;
s3: the natural gas and the air enter the box body through the air inlet pipe, the natural gas ignites the air in the heating box in the box body to heat the air in the heating box, the heated air in the heating box expands to enter the heating pipe, the first corrugated pipe, the first connecting pipe and the connecting plate, the hot air is sprayed out through the spray head to be counted in the inner barrel, the hot air continuously rises in the inner barrel, meanwhile, the air temperature is continuously reduced, the air above the inner barrel enters the fixed pipe, and the air in the inner barrel moves downwards through the fixed pipe to enter the second connecting pipe;
s4: when hot air moves in the first connecting pipe and enters a limiting rod and the connecting pipes to enter a space between the outer cylinder and the inner cylinder, the hot air enters the space between the outer cylinder and the inner cylinder, the partition board blocks the movement of the hot air to enable the hot air to spirally move upwards along the side wall of the partition board, the hot air simultaneously heats two ends of the inner cylinder and reduces the preheating time of the main body, the hot air between the inner cylinder and the outer cylinder enters the interior of the second connecting pipe through the communicating pipe and the other limiting rod to enable the air to enter the interior of the bottom end of the heating box in the second connecting pipe, the second corrugated pipe and the circulating pipe, and the air continues to move upwards after being heated in, therefore, hot air continuously and circularly moves among the inner cylinder, the inner cylinder and the outer cylinder, the temperature inside and outside the main body is continuously raised, energy is saved, heat waste is reduced, smoke dust generated by combustion of natural gas is prevented from entering the main body, and the temperature of molten steel entering the main body is prevented from being reduced;
the nodular cast iron casting equipment in S1 comprises a support 1, a main body 2, a lifting mechanism 3, a heating mechanism 4, a connecting mechanism 5, an air injection mechanism 6 and a heat preservation mechanism 7, wherein the main body 2 used for conveying and storing molten steel is rotatably connected inside the support 1, and the air injection mechanism 6 used for heating the inside of the main body 2 is slidably connected inside the main body 2; the side wall of the air injection mechanism 6 is provided with the heat preservation mechanism 7 for heating the main body 2; the bottom end of the air injection mechanism 6 is provided with the lifting mechanism 3 for driving the air injection mechanism 6 to move up and down continuously, and the connecting mechanism 5 for conveying and circulating hot air is arranged at the connecting part of the lifting mechanism 3 and the air injection mechanism 6; the bottom end of the connecting mechanism 5 is provided with the heating mechanism 4 for heating air, and the top end of the heating mechanism 4 is provided with the lifting mechanism 3.
Specifically, the main body 2 includes an outer cylinder 21, a partition 22 and an inner cylinder 23, the inner portion of the bracket 1 is rotatably connected to the outer cylinder 21, the inner cylinder 23 is fixedly connected to the inner portion of the outer cylinder 21, the spiral partition 22 is installed between the outer cylinder 21 and the inner cylinder 23, so that hot air can conveniently enter between the outer cylinder 21 and the inner cylinder 23, the partition 22 blocks the movement of the hot air, the hot air spirally moves upwards along the side wall of the partition 22, the hot air heats two ends of the inner cylinder 23 at the same time, and the preheating time of the main body 2 is shortened.
Specifically, air jet mechanism 6 includes shower nozzle 61, connecting plate 62 and fixed pipe 63, the inside wall sliding connection of inner tube 23 connecting plate 62, the internally mounted of connecting plate 62 shower nozzle 61, just the inside fixed connection of connecting plate 62 fixed pipe 63, just fixed pipe 63 stretches into the inside of inner tube 23, for the convenient hot-air admission the inside of connecting pipe 62 makes the hot-air pass through shower nozzle 61 spouts the count into the inside of inner tube 23 makes the hot-air constantly rise, and air temperature constantly reduces simultaneously, makes the air admission of inner tube 23 top in the fixed pipe 63, make the hot-air constantly be in the inside rising motion of inner tube 23.
Specifically, the heat insulation mechanism 7 comprises a fixed block 71, a limiting rod 72, an installation pipe 73, a floating ball 74 and a connecting pipe 75; the fixing blocks 71 are symmetrically installed at the edge of one end of the outer cylinder 21, the installation pipes 73 are installed inside the fixing blocks 71, one of the installation pipes 73 is installed between the outer cylinder 21 and the inner cylinder 23, the connecting pipe 75 is installed at the other end of the outer cylinder 21, and the connecting pipe 75 is communicated with the other installation pipe 73; the inside of the fixed block 71 is slidably connected with the hollow limiting rod 72, and the inside of the limiting rod 72 with one spherical end is clamped and slidably connected with the floating ball 74; the limiting rod 72 is slidably connected with the inside of the limiting rod 72, the limiting rod 72 abuts against the floating ball 74, in order to rotate the limiting rod 72, the limiting rod 72 enters the inside of the fixed block 71, the spherical limiting rod 72 is in contact with the mounting pipe 73, the mounting pipe 73 enters the inside of the limiting rod 72 to push the floating ball 74, hot air in the mounting pipe 73 enters the space between the outer cylinder 21 and the inner cylinder 23 through a through hole in the side wall of the limiting rod 72, and the hot air moves upwards in the outer cylinder 21 and the inner cylinder 23 in a spiral manner along with the hot air, so that the air is discharged into the other limiting rod 72 through the connecting pipe 75.
Specifically, the connecting mechanism 5 includes a clamping groove 51, a fixed disc 52, a first connecting pipe 53, a second connecting pipe 54 and a valve 55, the first connecting pipe 53 is fixedly connected to the center of the bottom surface of the connecting plate 62, and the valve 55 is mounted on the side wall of the first connecting pipe 53; the first connection pipe 53 is communicated with the spray head 61, and the second connection pipe 54 is installed inside the first connection pipe 53; the top end of the second connecting pipe 54 is fixedly connected with the fixed pipe 63 and one of the limiting rods 72, and the top end of the first connecting pipe 53 is connected with the other limiting rod 72; bottom fixed connection of first connecting pipe 53 fixed disk 52, the inside of fixed disk 52 is equipped with the annular draw-in groove 51, for the convenience rotates fixed disk 52, fixed disk 52 drives first connecting pipe 53 second connecting pipe 54 gag lever post 72 rotates, and is convenient gag lever post 72 gets into the inside of fixed block 71 makes things convenient for hot-air to pass through simultaneously first connecting pipe 53 gets into the inside of inner tube 23, fixed pipe 63 with the inside air of gag lever post 71 passes through second connecting pipe 54 downstream.
Specifically, the lifting mechanism 3 includes a hydraulic rod 31, a first corrugated tube 32 and a second corrugated tube 33, the top end of the hydraulic rod 31 is rotatably connected to the inside of the engaging groove 51, the bottom end of the second connecting tube 54 is rotatably connected to and engaged with the second corrugated tube 33, the bottom end of the first connecting tube 53 is engaged with and rotatably connected to the first corrugated tube 32, so as to open the hydraulic rod 31 conveniently, the hydraulic rod 31 drives the fixed disk 52 to move up and down, and when the fixed disk 52 drives the first corrugated tube 32 and the second corrugated tube 33 to move, the first corrugated tube 32 and the first connecting tube 53 are kept communicated at this time, and the second corrugated tube 33 and the second connecting tube 54 are kept communicated at the same time.
Specifically, the heating mechanism 4 comprises an air inlet pipe 41, a box body 42, a heating box 43, a heating pipe 44, a circulating pipe 45 and an air outlet pipe 46; the hydraulic rod 31 is installed on the top surface of the box body 42, the exhaust pipe 46 is installed on the top end of the box body 42, the air inlet pipe 41 is installed on the side wall of the box body 42, and the heating box 43 is installed inside the box body 42; the heating pipe 44 and the circulation pipe 45 are installed inside the heating box 43, the heating pipe 44 is communicated with the first corrugated pipe 32, the circulation pipe 45 is connected with the second corrugated pipe 33, so that natural gas and air conveniently enter the box body 42 through the air inlet pipe 41, the natural gas is ignited inside the box body 42 to heat the air in the heating box 43, hot air in the heating box 43 enters the inside of the first corrugated pipe 32 through the heating pipe 44, and air exhausted from the inside of the inner barrel 23 enters the heating box 43 through the circulation pipe 45, so that the air is conveniently heated again.
In use, the main body 2 is turned over to the state shown in fig. 1, the hydraulic rod 31 is opened, the hydraulic rod 31 drives the fixed disc 52, the first connecting pipe 53 and the connecting plate 62 to move upwards, the connecting plate 62 moves into the inner cylinder 23, the connecting plate 62 closes the inner cylinder 23, and the limiting rod 72 is aligned with the fixed block 71. The fixed disk 52 is grasped, the fixed disk 52 drives the first connecting pipe 53, the second connecting pipe 54 and the limiting rod 72 to rotate, the spherical end of the hydraulic rod 31 rotates in the clamping groove 51, meanwhile, the first corrugated pipe 32 rotates at the bottom end of the first connecting pipe 53, the second corrugated pipe 33 rotates at the bottom end of the second connecting pipe 54, the limiting rod 72 enters the fixing block 71, the spherical limiting rod 72 is in contact with the mounting pipe 73, the mounting pipe 73 enters the limiting rod 72, one limiting rod 72 is communicated with the communicating pipe 75, and the other limiting rod 72 is communicated between the outer cylinder 21 and the inner cylinder 23. Natural gas and air are introduced into the box body 42 through the air inlet pipe 41, the natural gas is ignited inside the box body 42 to heat the air in the heating box 43, the air heated inside the heating box 43 is expanded to enter the heating pipe 44, the first corrugated pipe 32, the first connecting pipe 53 and the connecting plate 62, the hot air is sprayed out through the spray head 61 and is counted inside the inner cylinder 23, the hot air continuously rises inside the inner cylinder 23, the air temperature continuously decreases, the air above the inner cylinder 23 enters the fixed pipe 63, and the air in the inner cylinder 23 moves downwards through the fixed pipe 63 to enter the second connecting pipe 54. When the hot air moves in the first connection pipe 53 and enters between the outer cylinder 21 and the inner cylinder 23 through the one limiting rod 72 and the one connection pipe 75, the hot air enters between the outer cylinder 21 and the inner cylinder 23, the partition plate 22 blocks the movement of the hot air, so that the hot air spirally moves upwards along the side wall of the partition plate 22, the hot air simultaneously heats the two ends of the inner cylinder 23, the preheating time of the main body 2 is reduced, the hot air between the inner cylinder 23 and the outer cylinder 21 enters the inside of the second connection pipe 54 through the one connection pipe 75 and the other limiting rod 72, the air enters the inside of the bottom end of the heating box 43 through the second connection pipe 54, the second corrugated pipe 33 and the circulation pipe 45, the air continues to move upwards after being heated in the inside of the heating box 43, and the hot air continues to move upwards in the inner cylinder 23, The inner cylinder 23 and the outer cylinder 21 are in continuous circular motion, so that the temperature inside and outside the main body 2 is continuously raised, energy is saved, heat waste is reduced, smoke generated by combustion of natural gas is prevented from entering the main body 2, and molten steel is prevented from entering the main body 2 and reducing the temperature.
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, and the embodiments and descriptions given above are only illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which fall within the scope of the claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. A casting process of nodular cast iron is characterized in that: the method comprises the following steps:
s1: the method comprises the following steps of connecting a nodular cast iron casting device with an external power supply, opening a hydraulic rod, enabling the hydraulic rod to drive a fixed disc, a first connecting pipe and a connecting plate to move upwards, enabling the connecting plate to move into an inner cylinder, enabling the connecting plate to seal the inner cylinder, and enabling a limiting rod to be aligned with a fixed block;
s2: the fixed disc is grabbed, the fixed disc drives the first connecting pipe, the second connecting pipe and the limiting rod to rotate, the spherical end of the hydraulic rod rotates in the clamping groove, meanwhile, the first corrugated pipe rotates at the bottom end of the first connecting pipe, the second corrugated pipe rotates at the bottom end of the second connecting pipe, the limiting rod enters the inside of the fixed block, the spherical limiting rod is in contact with the mounting pipe, the mounting pipe enters the inside of the limiting rod, one limiting rod is communicated with the communicating pipe, and the other limiting rod is communicated between the outer barrel and the inner barrel;
s3: the natural gas and the air enter the box body through the air inlet pipe, the natural gas ignites the air in the heating box in the box body to heat the air in the heating box, the heated air in the heating box expands to enter the heating pipe, the first corrugated pipe, the first connecting pipe and the connecting plate, the hot air is sprayed out through the spray head to be counted in the inner barrel, the hot air continuously rises in the inner barrel, meanwhile, the air temperature is continuously reduced, the air above the inner barrel enters the fixed pipe, and the air in the inner barrel moves downwards through the fixed pipe to enter the second connecting pipe;
s4: when hot air moves in the first connecting pipe and enters a limiting rod and the connecting pipes to enter a space between the outer cylinder and the inner cylinder, the hot air enters the space between the outer cylinder and the inner cylinder, the partition board blocks the movement of the hot air to enable the hot air to spirally move upwards along the side wall of the partition board, the hot air simultaneously heats two ends of the inner cylinder and reduces the preheating time of the main body, the hot air between the inner cylinder and the outer cylinder enters the interior of the second connecting pipe through the communicating pipe and the other limiting rod to enable the air to enter the interior of the bottom end of the heating box in the second connecting pipe, the second corrugated pipe and the circulating pipe, and the air continues to move upwards after being heated in, therefore, hot air continuously and circularly moves among the inner cylinder, the inner cylinder and the outer cylinder, the temperature inside and outside the main body is continuously raised, energy is saved, heat waste is reduced, smoke dust generated by combustion of natural gas is prevented from entering the main body, and the temperature of molten steel entering the main body is prevented from being reduced;
the nodular cast iron casting equipment in the S1 comprises a support (1), a main body (2), a lifting mechanism (3), a heating mechanism (4), a connecting mechanism (5), an air injection mechanism (6) and a heat preservation mechanism (7), wherein the main body (2) used for conveying and storing molten steel is rotatably connected to the inside of the support (1), and the air injection mechanism (6) used for heating the inside of the main body (2) is slidably connected to the inside of the main body (2); the side wall of the air injection mechanism (6) is provided with the heat preservation mechanism (7) for heating the packing of the main body (2); the bottom end of the air injection mechanism (6) is provided with the lifting mechanism (3) for driving the air injection mechanism (6) to move up and down continuously, and the connecting part of the lifting mechanism (3) and the air injection mechanism (6) is provided with the connecting mechanism (5) for conveying and circulating hot air; the bottom end of the connecting mechanism (5) is provided with the heating mechanism (4) for heating air, and the top end of the heating mechanism (4) is provided with the lifting mechanism (3).
2. The casting process of nodular cast iron according to claim 1, wherein: the main part (2) includes urceolus (21), baffle (22) and inner tube (23), the inside rotation of support (1) is connected urceolus (21), the inside fixed connection of urceolus (21) inner tube (23), urceolus (21) with install spiral between inner tube (23) baffle (22).
3. The process of casting ductile iron according to claim 2, wherein: jet-propelled mechanism (6) are including shower nozzle (61), connecting plate (62) and fixed pipe (63), the inside wall sliding connection of inner tube (23) connecting plate (62), the internally mounted of connecting plate (62) shower nozzle (61), just the inside fixed connection of connecting plate (62) fixed pipe (63), just fixed pipe (63) stretch into the inside of inner tube (23).
4. A casting process of nodular cast iron according to claim 3, characterised in that: the heat insulation mechanism (7) comprises a fixing block (71), a limiting rod (72), an installation pipe (73), a floating ball (74) and a connecting pipe (75); the fixing blocks (71) are symmetrically arranged at the edge of one end of the outer cylinder (21), the mounting pipes (73) are arranged in the fixing blocks (71), one of the mounting pipes (73) is arranged between the outer cylinder (21) and the inner cylinder (23), the connecting pipe (75) is arranged at the other end of the outer cylinder (21), and the connecting pipe (75) is communicated with the other mounting pipe (73); the inner part of the fixed block (71) is in sliding connection with the limiting rod (72) which is hollow in the inner part, and the inner part of the limiting rod (72) with one spherical end is clamped and in sliding connection with the floating ball (74); the limiting rod (72) is connected with the inside of the limiting rod (72) in a sliding mode, and the limiting rod (72) abuts against the floating ball (74).
5. The casting process of nodular cast iron according to claim 4, wherein: the connecting mechanism (5) comprises a clamping groove (51), a fixed disc (52), a first connecting pipe (53), a second connecting pipe (54) and a valve (55), the first connecting pipe (53) is fixedly connected to the center of the bottom surface of the connecting plate (62), and the valve (55) is installed on the side wall of the first connecting pipe (53); the first connecting pipe (53) is communicated with the spray head (61), and the second connecting pipe (54) is installed in the first connecting pipe (53); the top end of the second connecting pipe (54) is fixedly connected with the fixed pipe (63) and one limiting rod (72), and the top end of the first connecting pipe (53) is connected with the other limiting rod (72); the bottom end of the first connecting pipe (53) is fixedly connected with the fixed disc (52), and the annular clamping groove (51) is formed in the fixed disc (52).
6. The casting process of nodular cast iron according to claim 5, wherein: the lifting mechanism (3) comprises a hydraulic rod (31), a first corrugated pipe (32) and a second corrugated pipe (33), the top end of the hydraulic rod (31) is rotatably connected with the inside of the clamping groove (51), the bottom end of the second connecting pipe (54) is rotatably connected with and clamped with the second corrugated pipe (33), and the bottom end of the first connecting pipe (53) is clamped with and rotatably connected with the first corrugated pipe (32).
7. The casting process of nodular cast iron according to claim 6, wherein: the heating mechanism (4) comprises an air inlet pipe (41), a box body (42), a heating box (43), a heating pipe (44), a circulating pipe (45) and an air outlet pipe (46); the hydraulic rod (31) is installed on the top surface of the box body (42), the exhaust pipe (46) is installed at the top end of the box body (42), the air inlet pipe (41) is installed on the side wall of the box body (42), and the heating box (43) is installed inside the box body (42); the heating pipe (44) and the circulating pipe (45) are installed inside the heating box (43), the heating pipe (44) is communicated with the first corrugated pipe (32), and the circulating pipe (45) is connected with the second corrugated pipe (33).
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Effective date of registration: 20220830 Address after: Magang Village, Magang Township, Shenbei New District, Shenyang City, Liaoning Province 110124 Applicant after: LIAONING YISHENG TECHNOLOGY GROUP CO.,LTD. Address before: Unit 1, building 5, Luxin Changchun Garden, No.1, Yinchuan East Road, Laoshan District, Qingdao City, Shandong Province 266100 Applicant before: Wang Ping |
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