Iron alloy casting chute and casting device
By optimizing the design of ferroalloy casting chutes and pouring devices, the problems of mold thermal scouring and thermal erosion were solved, and the mold life was extended and the cost was reduced.
Patent Information
- Application Number
- CN202422782797.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-14
AI Technical Summary
In the existing ferroalloy casting process, the mold is severely damaged, mainly due to the thermal scouring and thermal erosion of the molten iron, resulting in a short mold service life and high operating costs.
A ferroalloy casting chute and pouring device was designed, including a pouring chute and a swing mechanism. Through the expansion and contraction and swing of the main chute and auxiliary chute, the molten iron flow path was optimized, the unevenness of mold thermal erosion was reduced, and the scraper brick was used to treat high-temperature sticky materials, thereby extending the mold life.
It achieves uniform heat flushing on the mold surface, reduces mold damage, extends mold service life, and reduces operating costs.
Smart Images
Figure CN223382573U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of casting equipment, in particular to a ferroalloy casting chute and a casting device. Background Art
[0002] In the ferroalloy production process, the casting of alloy solution mostly adopts the traditional mold casting method and pool casting method. The mold casting and pool casting processes are mature and the production cost is relatively low, but the shortcomings are also obvious, such as poor workshop production environment, difficulty in collecting casting fume, high labor intensity of employees, and greater safety risks in working in high temperature and high intensity areas. For this reason, in recent years, some production units or research institutions in the industry have successively developed various types of ferroalloy automatic continuous casting machines, such as linear casting machines, disc casting machines, chain plate casting machines, ring casting machines, etc. Various casting machines have achieved significant improvements and qualitative improvements in solving the workshop working environment and reducing employee labor intensity and safety risks. The only problem is that the operating cost is relatively high. It is calculated that the main reason for the high cost is the high consumption of molds, which causes the overall cost to remain high.
[0003] During the molten iron casting process, the main factors of mold damage are the thermal erosion and thermal corrosion of the molten iron on the mold. Among them, the thermal erosion damage of the molten iron on the mold is related to the gravitational potential energy of the molten iron on the casting point of the mold, and secondly to the momentum of the thermal erosion of the molten iron on the casting point of the mold. At the same time, it is related to the duration or cumulative duration of the thermal erosion of the molten iron on the casting point of the mold. It can be understood that the thermal erosion damage of the molten iron on the casting point is related to the impulse.
[0004] Therefore, there is an urgent need for an iron alloy casting chute and pouring device, analyze the factors affecting the thermal erosion of molten iron on the mold, and develop corresponding chute equipment during the process of process optimization to reduce the damage to the mold caused by thermal erosion and improve the overall service life of the mold. Utility Model Content
[0005] In order to overcome the problems existing in the prior art, the utility model aims to provide a ferroalloy casting chute and a pouring device.
[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ferroalloy casting chute, comprising a casting chute and a swinging mechanism, wherein the casting chute comprises a main chute and a secondary chute; the main chute comprises a chute molten pool and a main chute channel, one side of the chute molten pool is connected to one end of the main chute channel, and the other end of the main chute channel is connected to the secondary chute, the secondary chute comprises a telescopic structure, and the secondary chute is telescopic along the casting direction through the telescopic structure; the swinging mechanism is arranged at the bottom of the main chute.
[0007] The chute pool is primarily used to receive molten iron. Molten iron from the ladle is poured directly into the chute pool, where it then flows through the main chute channel into the auxiliary chute. The auxiliary chute also serves as a channel for molten iron to flow through, and into the mold. The auxiliary chute is telescopic, allowing the height of the auxiliary chute outlet to remain constant above the mold.
[0008] The utility model is further configured as follows: the telescopic structure is a fixed slide rail structure, a gear rack telescopic structure or a hydraulic telescopic stepper.
[0009] The utility model is further configured as follows: the swing mechanism includes a gear, a rack and a hydraulically driven push rod arranged on the base, the gear is arranged at the bottom of the main chute, the rack is meshed with the gear, and one end of the rack is connected to the hydraulically driven push rod.
[0010] The utility model is further configured as follows: the outer layer of the main chute is a cast steel structural frame, the inner layer is thermal insulation cotton, the inner layer of the thermal insulation cotton is semi-graphite silicon carbide bricks, and the inner layer of the semi-graphite silicon carbide bricks is a casting material coating layer.
[0011] The utility model further has the following configurations: the main chute channel is inclined relative to the surface of the chute molten pool, with an inclination angle ranging from 8° to 20°, preferably 10°; the chute molten pool is circular or arc-shaped, and a reserved groove is provided at the bottom of the cast steel structure frame at the outlet of the main chute channel, in which scraper bricks are installed. The scraper bricks are SiC scraper bricks used to treat high-temperature sticky materials that may be deposited during the casting process.
[0012] A ferroalloy casting device includes a ladle, a mold moving assembly and the above-mentioned ferroalloy casting chute, the mold moving assembly is arranged below the ferroalloy casting chute, the ladle is arranged above the ferroalloy casting chute, and the ladle is connected to the chute molten pool; the mold moving assembly includes several mold plates, and the auxiliary chute is in contact with the upper end surface of the mold plate.
[0013] The utility model is further configured as follows: the mold moving assembly also includes a moving track, a conveying bracket and several support frames; a plurality of pulleys are arranged at the bottom of the conveying bracket, and the pulleys are arranged on the moving track and move along the moving track; a plurality of groups of evenly spaced support frames are arranged above the conveying bracket, and the mold plate is installed on the support frames.
[0014] The utility model is further configured as follows: the middle portion of the mold disc is concave, the two sides are convex, and a transition plate is provided between two adjacent mold discs.
[0015] The utility model is further configured as follows: the ferroalloy casting device also includes a driver and n triggers, the driver is used to drive the conveying bracket to move along the movable track, and the triggers are sequentially arranged on the bracket on one side of the conveying bracket. When the first trigger is triggered, the water outlet of the auxiliary chute is located at one end relative to the mold plate; when the nth trigger is triggered, the water outlet of the auxiliary chute is located at the other end relative to the mold plate.
[0016] The utility model also includes a ferroalloy pouring device control process, which is used in conjunction with the above-mentioned ferroalloy pouring device and includes the following steps:
[0017] Step S1: When the mold is running, molten iron is poured from the ladle into the chute pool, and then into the auxiliary chute through the main chute channel;
[0018] Step S2: The driver drives the conveying bracket to move along the moving track, and the edge of the mold plate triggers n triggers in sequence during the movement;
[0019] Step S3: When the molten iron reaches the outlet of the auxiliary chute, the first trigger is activated and sends a swing signal to the swing mechanism. The swing mechanism starts to swing and sends the current position of the auxiliary chute to the second to nth triggers in sequence with the horizontal step position.
[0020] Step S4: The first trigger controls the sub-chute to retract to the set minimum position. When the horizontal step reaches the second trigger position, the second trigger controls the sub-chute to start extending. When the horizontal step reaches the 3rd-n-2th trigger position, the control chute extends to the maximum. The n-1th trigger controls the sub-chute to retract. When it moves to the nth trigger position, the chute retracts to the set minimum position.
[0021] Step S5: Repeat steps S2-S4 until the pouring of all mold plates on the moving track is completed.
[0022] The utility model realizes the chute swing technology by changing the chute structure according to the process goal to be achieved in the molten iron casting process, so that the mold surface is scoured evenly, that is, under a constant force, the cumulative scouring time of each point on the mold surface is equal; by adding a telescopic "auxiliary chute", it is ensured that the relative minimum height difference between the chute molten iron outlet and the mold is maintained and kept within a constant height difference value; through experience combined with theoretical analysis, the appropriate chute inclination angle is selected to reduce the momentum impact speed of the molten iron on the mold.
[0023] In summary, the beneficial effects of the above technical solution of the present utility model are as follows:
[0024] 1. The chute molten pool of the utility model adopts a circular structure or an arc structure, which can ensure that the relative position of the molten iron ladle outlet in the chute molten pool remains unchanged during the chute swing process; the multi-track swing of the chute allows the molten iron to evenly scour and erode the mold surface, avoiding uneven mold damage; at the same time, the auxiliary chute telescopic track movement reduces the height difference between the molten iron outlet and the mold to a minimum, protecting the mold from excessive damage caused by the large potential energy of molten iron casting.
[0025] 2. The design of this utility model starts from the influence of heat loss of molten iron on the mold, and optimizes the process from the aspects of casting height, molten iron flow rate, continuous flushing time of molten iron on the mold, and cumulative flushing time, so as to extend the service life of the mold by controlling the heat loss of molten iron on the mold. BRIEF DESCRIPTION OF THE DRAWINGS
[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0027] Figure 1 This is a top view of the ferroalloy casting chute.
[0028] Figure 2 Schematic diagram of scraper brick position.
[0029] Figure 3 Schematic diagram of the swing mechanism.
[0030] Figure 4 This is a top view of the ferroalloy casting chute.
[0031] Figure 5 Schematic diagram of the pouring trajectory.
[0032] Figure 6 Schematic diagram of the telescopic trajectory of the auxiliary chute.
[0033] In the accompanying drawings, the meanings of the symbols are as follows:
[0034] 101. chute pool, 102. main chute channel, 103. auxiliary chute, 104. scraper brick, 105. telescopic track, 106. base, 107. hydraulic drive push rod, 108. rack, 109. gear, 200. ladle, 300. drive, 310. trigger, 400. mold moving assembly, 410. bracket, 420. mold plate, 430. transition plate, 440. support frame, 450. conveyor bracket, 460. moving track, 470. pulley. DETAILED DESCRIPTION
[0035] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments of the present invention, other similar embodiments obtained by ordinary technicians in this field without making any creative work should fall within the scope of protection of the present invention.
[0036] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.
[0037] Example 1:
[0038] like Figure 1-Figure 3 As shown, a preferred embodiment of the present invention is a ferroalloy casting chute, including a casting chute and a swing mechanism, the casting chute includes a main chute and an auxiliary chute 103; the main chute includes a chute molten pool 101 and a main chute channel 102, one side of the chute molten pool 101 is connected to one end of the main chute channel 102, and the other end of the main chute channel 102 is connected to the auxiliary chute 103, the auxiliary chute 103 includes a telescopic structure, and the auxiliary chute 103 is telescopic along the casting direction through the telescopic structure; the swing mechanism is arranged at the bottom of the main chute.
[0039] The chute pool 101 primarily receives molten iron. Molten iron from the ladle is directly poured into the chute pool 101. The molten iron then flows through the main chute channel 102 into the auxiliary chute 103. The auxiliary chute 103 also serves as a channel for molten iron flow, allowing it to enter the mold. The auxiliary chute 103 is telescopic, allowing the height between its outlet and the mold to remain constant. The telescopic structure can be a fixed slide, a rack-and-pinion telescopic mechanism, or a hydraulic telescopic stepper.
[0040] The extended end of the telescopic structure is connected to the auxiliary chute 103 , and the telescopic structure is electrically connected to an external control system, which controls the extension or retraction of the auxiliary chute 103 relative to the main chute channel 102 .
[0041] like Figure 3 As shown, the swing mechanism includes a gear 109, a rack 108 and a hydraulically driven push rod 107 arranged on the base 106. The gear 109 is arranged at the bottom of the main chute, the rack 108 is meshed and connected with the gear 109, and one end of the rack 108 is connected to the hydraulically driven push rod 107.
[0042] The outer layer of the main chute is a cast steel structural frame, the inner layer is thermal insulation cotton, the inner layer of the thermal insulation cotton is semi-graphite silicon carbide bricks, and the inner layer of the semi-graphite silicon carbide bricks is a casting material coating layer.
[0043] The main chute channel 102 is inclined to the pool surface of the chute molten pool 101, and the inclination angle range is 8°-20°; the chute molten pool 101 adopts a circular or arc-shaped structure, and a reserved groove is set at the bottom of the cast steel structure frame at the outlet of the main chute channel 102, and a scraper brick 104 is installed in the reserved groove. Figure 2 As shown, the scraper brick is a SiC scraper brick, which is used to treat high-temperature sticky materials that may be deposited during the casting process.
[0044] Example 2:
[0045] like Figure 4-Figure 6 As shown, a ferroalloy casting device includes a ladle 200, a mold moving assembly 400 and the above-mentioned ferroalloy casting chute, the mold moving assembly 400 is arranged below the ferroalloy casting chute, the ladle 200 is arranged above the ferroalloy casting chute, and the ladle 200 is connected to the chute molten pool 101; the mold moving assembly 400 includes a plurality of mold plates 420, and the auxiliary chute 103 is in contact with the upper end surface of the mold plate 420.
[0046] The mold moving assembly 400 also includes a moving rail 460, a conveying bracket 450 and several support frames 440; a plurality of pulleys 470 are arranged at the bottom of the conveying bracket 450, and the pulleys 470 are arranged on the moving rail 460 and move along the moving rail 460; a plurality of groups of evenly spaced support frames 440 are arranged above the conveying bracket 450, and the mold plate 420 is installed on the support frame 440.
[0047] The mold plate 420 is concave in the middle and convex on both sides. A transition plate 430 is provided between two adjacent mold plates 420 .
[0048] The ferroalloy casting device also includes a driver 300 and n triggers 310. The driver 300 is used to drive the conveying bracket 450 to move along the movable track 460. The triggers 310 are sequentially arranged on the bracket 410 on one side of the conveying bracket 450. When the first trigger 310 is triggered, the water outlet of the auxiliary chute 103 is located at one end relative to the mold plate 420; when the nth trigger 310 is triggered, the water outlet of the auxiliary chute 103 is located at the other end relative to the mold plate 420.
[0049] When the mold is running, molten iron is poured from the ladle 200 into the chute pool 101, and then into the auxiliary chute 103 through the main chute channel 102; the driver 300 drives the conveying bracket 450 to move along the moving track 460, and the edge of the mold plate 420 triggers n triggers 310 in sequence during the operation;
[0050] When the molten iron reaches the outlet of the auxiliary chute 103, the first trigger 310 is activated and sends a swing signal to the swing mechanism, which starts to swing and sends the current position of the auxiliary chute 103 at the same time. As the horizontal step position increases, the second to nth triggers 310 are triggered in sequence.
[0051] In this embodiment, 10 triggers 310 are provided. During actual operation, the main and auxiliary chutes swing left and right synchronously. The swinging pattern is controlled by the system logic program. The swinging speed varies with the driving speed. The swinging trajectory is changed once every time a bag of molten iron is cast. As shown in FIG3 , a total of 10 swinging trajectory lines are provided, that is, the 1st bag, 11th bag, 21st bag... are cast in the first swinging trajectory line, the 2nd bag, 12th bag, 22nd bag... are cast in the second swinging trajectory line, the 3rd bag, 13th bag, 23rd bag... are cast in the third swinging trajectory line..., and the swinging trajectory line is repeated every time 10 bags of molten iron are cast.
[0052] The first trigger 310 controls the auxiliary chute 103 to retract to the set minimum position. When the horizontal step reaches the second trigger 310 position, the second trigger 310 controls the auxiliary chute 103 to start extending. When the horizontal step reaches the 3rd-n-2nd trigger 310 position, the auxiliary chute 103 is controlled to extend to the maximum. The n-1th trigger 310 controls the auxiliary chute to retract. When it moves to the nth trigger 310 position, the auxiliary chute 103 is retracted to the preset minimum position. The extension trajectory of the auxiliary chute 103 is as follows: Figure 5 As shown, the auxiliary chute 103 rises and falls along the telescopic track 105 according to the groove depth of the mold plate 420 and the relative height of the transition plate, and the auxiliary chute 103 performs telescopic movement accordingly.
[0053] Repeat the above steps until the pouring of all mold plates 420 on the moving track 460 is completed.
[0054] After each casting task is completed, the driver 300 stops the auxiliary chute 103 and the auxiliary chute 103 retracts to the set minimum position, i.e., it is in the retracted state. When casting again, the auxiliary chute 103 quickly enters the mold equidistant position according to the trigger instruction and calculates the remaining step trajectory of the current mold.
[0055] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the scope of protection of the utility model. Simple modifications or equivalent replacements of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.
Claims
1. A ferroalloy casting chute, comprising a casting chute and a swing mechanism, characterized in that: The pouring chute includes a main chute and an auxiliary chute; the main chute includes a chute molten pool and a main chute channel, one side of the chute molten pool is connected to one end of the main chute channel, and the other end of the main chute channel is connected to the auxiliary chute, the auxiliary chute includes a telescopic structure, and the auxiliary chute is telescopic along the pouring direction through the telescopic structure; the swing mechanism is arranged at the bottom of the main chute.
2. The ferroalloy casting chute according to claim 1, characterized in that: The telescopic structure is a fixed slide rail structure, a rack and pinion telescopic structure or a hydraulic telescopic stepper.
3. The ferroalloy casting chute according to claim 1, characterized in that: The swing mechanism includes a gear, a rack and a hydraulically driven push rod arranged on the base, the gear is arranged at the bottom of the main chute, the rack is meshed with the gear, and one end of the rack is connected to the hydraulically driven push rod.
4. The ferroalloy casting chute according to claim 1, characterized in that: The outer layer of the main chute is a cast steel structural frame, the relatively inner layer of the main chute is insulation cotton, the inner layer of the insulation cotton is semi-graphite silicon carbide bricks, and the inner layer of the semi-graphite silicon carbide bricks is a casting material coating layer.
5. The ferroalloy casting chute according to claim 4, characterized in that: The main chute channel is inclined to the pool surface of the chute molten pool, and the inclination angle range is 8°-20°; the chute molten pool adopts a circular or arc-shaped structure, and a reserved groove is provided at the bottom of the cast steel structure frame at the water outlet of the main chute channel, and a scraper brick is installed in the reserved groove.
6. A ferroalloy casting device, characterized in that: It comprises a ladle, a mold moving assembly and a ferroalloy casting chute according to any one of claims 1 to 5, wherein the mold moving assembly is arranged below the ferroalloy casting chute, the ladle is arranged above the ferroalloy casting chute, and the ladle is connected to the chute molten pool; the mold moving assembly includes a plurality of mold plates.
7. The ferroalloy casting device according to claim 6, characterized in that: The mold moving assembly also includes a moving track, a conveying bracket and several support frames; a plurality of pulleys are arranged at the bottom of the conveying bracket, and the pulleys are arranged on the moving track and move along the moving track; a plurality of groups of evenly spaced support frames are arranged above the conveying bracket, and the mold plate is installed on the support frames.
8. The ferroalloy pouring device according to claim 7, characterized in that: The middle part of the mold disc is concave, and both sides are convex. A transition plate is provided between two adjacent mold discs.
9. The ferroalloy pouring device according to claim 8, characterized in that: The ferroalloy casting device also includes a driver and n triggers, the driver is used to drive the conveying bracket to move along the movable track, and the triggers are sequentially arranged on the bracket on one side of the conveying bracket. When the first trigger is triggered, the water outlet of the auxiliary chute is located at one end relative to the mold plate; when the nth trigger is triggered, the water outlet of the auxiliary chute is located at the other end relative to the mold plate.