Alloy smelting ingot casting mold

Abstract

According to the alloy smelting ingot casting mold structure, the graphite ring and the induction coil are arranged in the annular heat preservation cavity formed between the channel formed by the preset heat preservation bricks in the casting mold and the cap opening body, the graphite ring is heated after the induction coil is powered on, and then the temperature of the casting cap opening is increased and controlled; the temperature of alloy melt entering the pouring cap opening can be adjusted, and the heat preservation effect of the pouring cap opening is effectively improved; according to the casting mold, impurities in the casting mold body have sufficient time to float upwards, and alloy melt at the pouring cap opening can be fully fed into the casting mold body, so that the solidification process of the alloy melt is optimized, casting defects are reduced, and the quality of cast ingots is improved. In addition, the clamping force between the first casting mold and the second casting mold is accurately controlled by arranging a clamping mechanism outside the casting molds, the connection tightness of the first casting mold and the second casting mold is ensured, and the situation that molten alloy leaks out of the ingot casting mold is avoided.

Description

Technical Field

[0001] This utility model relates to the field of alloy melting and casting technology, and in particular to an alloy melting and casting mold. Background Technology

[0002] The casting process during alloy smelting has a significant impact on product production and quality. The solidification conditions of the alloy in the ingot mold determine the structure and quality of the ingot. Cylindrical or cuboid ingot molds can produce alloy ingots with minimal difference in shape and size between their two end faces. These alloy ingots can undergo minimal machining or be used directly, thereby improving metal utilization and reducing production costs.

[0003] In actual smelting processes, the heat preservation effect of the pouring cap of the ingot mold is usually unsatisfactory and uneven in the later stages of casting. The temperature of the alloy melt at the ingot cap drops rapidly before solidification, and some inclusions in the ingot body cannot float to the surface sufficiently. In addition, the alloy melt in the ingot body does not receive replenishment from the melt at the pouring cap during solidification, resulting in defects such as porosity and shrinkage cavities in the ingot body, reducing the production yield and affecting product quality. Utility Model Content

[0004] In view of the technical problem in the prior art that the heat preservation effect of the casting cap of the mold is not ideal and uneven in the later stage of casting, resulting in defects such as porosity or shrinkage cavities in the ingot body, this utility model provides an alloy melting and casting ingot mold.

[0005] An alloy melting and casting mold includes a base, a mold body, and a pouring cap connected in sequence. The pouring cap includes a cap body and a channel penetrating within the cap body. The channel communicates with the interior of the mold and is used to pour molten alloy into the mold. The channel is integrally formed from a pre-insulated cap brick, and an annular insulation cavity is provided between the channel and the cap body. A graphite ring and an induction coil are provided within the annular insulation cavity. The induction coil includes a coil body surrounding the graphite ring and an inlet terminal and an outlet terminal respectively located at both ends of the coil body. Both the inlet and outlet terminals extend through the cap body and are electrically connected to an external coil heating control device. The inlet terminal of the induction coil has a cooling water inlet for introducing cooling water into the induction coil, and the outlet terminal has a cooling water outlet for discharging cooling water from the induction coil.

[0006] Furthermore, the mold body includes a first mold and a second mold detachably mounted on the first mold, and a mold cavity is formed between the first mold and the second mold, the mold cavity being in communication with the channel.

[0007] Furthermore, it also includes a clamping mechanism, which includes a clamping body for clamping the mold body; the clamping body is located on one side of the mold body and is arranged perpendicular to the connection surface of the first mold and the second mold; both ends of the clamping body are bent forward to form a first support plate and a second support plate perpendicular to the clamping body; the first support plate is in close contact with the first mold through a fixing rod; a nut is provided on the second support plate, and a lead screw is installed inside the nut, with one end of the lead screw in close contact with the outer surface of the second mold; by screwing the lead screw in or out of the nut, the second mold and the first mold are brought into close contact or released.

[0008] Furthermore, a first groove and / or a first locking block are provided on the contact surface between the first mold and the second mold; a second locking block matching the first groove and / or a second groove matching the first locking block are provided on the contact surface between the second mold and the first mold; the first mold is connected to the second groove and / or the second locking block of the second mold respectively through the first groove and / or the first locking block.

[0009] Furthermore, a release agent is applied to the inside of the mold cavity.

[0010] Furthermore, the base, the mold body, and the heat-insulating cap are sequentially stacked and assembled.

[0011] Furthermore, the mold has several symmetrically distributed first lifting lugs on both sides, and the casting cap has several symmetrically distributed second lifting lugs at both ends. Furthermore, a refractory material layer is also provided on the connection surface between the cap body and the mold body.

[0012] Furthermore, the cap body is made of insulating cotton or carbon felt; the refractory material layer is made of magnesia or clay; and the pre-placed bricks of the insulating cap are made of magnesia, clay, or corundum refractory material.

[0013] Furthermore, a valve switch is provided on both the cooling water inlet and the cooling water outlet.

[0014] The beneficial effects of this utility model are as follows: This utility model provides an alloy melting and casting ingot mold structure. The pouring cap is provided with a graphite ring and an induction coil in the annular insulation cavity formed between the channel formed by the pre-placed insulation brick and the cap body. After the induction coil is powered on, it heats the graphite ring through electromagnetic induction, thereby increasing and controlling the temperature of the pouring cap, and thus adjusting the temperature of the alloy melt poured into the channel, effectively improving the insulation effect of the pouring cap. This allows some impurities inside the mold body to float to the surface, and the alloy melt at the pouring cap can be fully replenished into the mold, thereby optimizing the solidification process of the alloy melt, reducing the generation of ingot defects, and improving the quality of the ingot.

[0015] In addition, a clamping mechanism is set outside the mold body, and the distance between the screw and the fixed rod is controlled by rotating the screw, thereby precisely controlling the clamping force between the first mold and the second mold. This ensures that the mold body is clamped between the fixed rod and the screw, ensuring the tightness of the connection between the first mold and the second mold, and preventing the alloy melt from leaking out of the combined ingot mold due to deformation of the clamping mechanism after repeated use at high temperatures. Attached Figure Description

[0016] Figure 1 A schematic diagram of an alloy melting and casting ingot mold provided by this utility model;

[0017] Figure 2 This is a schematic diagram of the cross-sectional structure of the casting cap provided by this utility model;

[0018] Figure 3 A schematic diagram of the structure of the induction coil provided by this utility model;

[0019] Figure 4 This utility model provides a schematic diagram of the sectional structure of the mold body after separation.

[0020] Attached Figure Labels

[0021] 1. Base; 2. Mold body; 21. First mold; 211. First groove; 212. First locking block; 22. Second mold; 221. Second groove; 222. Second locking block; 23. Mold cavity; 3. Pouring cap; 31. Cap body; 32. Channel; 33. Annular insulation cavity; 4. Clamping mechanism; 41. Clamp body; 42. First support plate; 43. Second support plate; 44. Fixing rod; 45. Nut; 46. Lead screw; 5. Graphite ring; 6. Induction coil; 61. Coil body; 62. Inlet terminal; 63. Outlet terminal; 64. Cooling water inlet; 65. Cooling water outlet; 66. Valve switch; 7. Refractory material layer; 8. First lifting lug; 9. Second lifting lug. Detailed Implementation

[0022] To provide a more detailed description of this utility model, the following description is provided in conjunction with the accompanying drawings. It should be noted that the embodiments described below are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0023] refer to Figure 1As shown, an alloy smelting and casting ingot mold includes a base 1, a mold body 2, a pouring cap 3, and a clamping mechanism 4 for clamping the mold body 2, connected in sequence. The base 1, the mold body 2, and the pouring cap 3 are stacked and assembled in sequence. It is mainly used for the smelting and casting of alloy materials. The mold is placed on the ground by stacking the base 1. After the alloy raw material is melted, it is poured into the mold body 2 through the pouring cap 3, and after cooling and solidification, it forms the desired ingot shape.

[0024] Specifically, refer to Figure 1 and Figure 4 As shown, the mold body 2 includes a first mold 21 and a second mold 22 detachably mounted on the first mold 21, and a mold cavity 23 is formed between the first mold 21 and the second mold 22.

[0025] The first mold 21 and the second mold 22 have a first groove 211 and / or a first locking block 212 on their contact surfaces; the second mold 22 and the first mold 21 have a second locking block 221 that matches the first groove 211 and / or a second groove 222 that matches the first locking block 212 on their contact surfaces; the first mold 21 is connected to the second groove 221 and / or the second locking block 222 of the second mold 22 one by one through the first groove 211 and / or the first locking block 212.

[0026] The first mold 21 and the second mold 22 are tightly fitted together by the first groove 211, the first locking block 212, and the corresponding second locking block 221 and the second groove 222, so as to achieve detachable and fixed installation between the first mold 21 and the second mold 22 and ensure the stability of the mold cavity 23 formed in use. In this embodiment, one end of the mold cavity 23 is open and communicates with the pouring cap 3 through the opening. The first mold 21 and the second mold 22 are arranged sequentially in the horizontal direction. The first mold 21 and the second mold 22 have two contact surfaces in the vertical direction, and both the first mold 21 and the second mold 22 are recessed inward to form mold grooves. The first mold 21 and the second mold 22 are respectively provided with a first groove 211 and a first locking block 212 on the two contact surfaces in the vertical direction. The second mold 22 and the first mold 21 are respectively provided with a second locking block 222 and a second groove 221 on the two contact surfaces in the vertical direction. The first locking block 212 and the second groove 221 are fitted together, and the second locking block 221 and the first groove 211 are fitted together, so that the second mold 22 and the first mold 21 are fixedly connected. The two mold grooves form the mold cavity 23.

[0027] The mold cavity 23 is coated with a release agent. By brushing or spraying the release agent and the detachable design of the first mold 21 and the second mold, the problem of difficult demolding after the cylindrical or cuboid ingot cooled and solidified after the molten casting is solved.

[0028] refer to Figure 2 , Figure 3 As shown, the pouring cap 3 includes a cap body 31 and a channel 32 that penetrates the cap body 31; the channel 32 communicates with the mold cavity 23 inside the mold, and the channel 32 is used to pour the alloy molten liquid into the mold body 2.

[0029] The channel 32 is integrally formed from the pre-formed insulating cap brick, and an annular insulating cavity 33 is provided between the channel 42 and the cap body 31. The pre-formed insulating cap brick has a low thermal conductivity, which can effectively slow down the cooling rate of the molten metal in the channel 32, thereby extending the solidification time of the molten metal and ensuring that the molten metal can flow smoothly into the mold cavity 23, providing more sufficient solidification time for the casting and reducing defects such as shrinkage cavities or porosity. In this embodiment, the pre-formed insulating cap brick is made of magnesia, clay, or corundum refractory material.

[0030] The annular heat preservation cavity 33 is provided with a graphite ring 5 and an induction coil 6; the induction coil 6 includes a coil body 61 surrounding the graphite ring 5 and an inlet terminal 62 and an outlet terminal 63 respectively located at both ends of the coil body 61; the inlet terminal 62 and the outlet terminal 63 both extend through the cap body 31 and are electrically connected to an external coil heating control device respectively.

[0031] In this embodiment, the external coil heating control device includes an external power supply and an induction heating circuit electrically connected to the external power supply; the output terminal of the induction heating circuit is connected to the inlet terminal and the outlet terminal respectively; after the induction coil 6 is energized, it heats the graphite ring 5. The graphite ring 5 can transfer the generated heat to heat the annular insulation cavity 33 to the required temperature range, further enhancing the insulation effect.

[0032] The channel 32, formed by the pre-molded bricks at the insulated cap, together with the annular insulation cavity 33, the graphite ring 5, and the induction coil 6, constitutes an insulation system. When the induction coil 6 is energized, it heats the graphite ring 5, which can transfer the heat to the annular insulation cavity 33 to the required temperature, thereby regulating the temperature of the alloy melt entering the channel 32. This effectively improves the insulation effect of the pouring cap 3, significantly reduces the heat loss of the alloy melt during the transmission and waiting process, prolongs the solidification time of the alloy melt, and provides more time for some impurities in the ingot to float and for feeding, thereby reducing defects such as shrinkage cavities and porosity.

[0033] The induction coil 6 has a cooling water inlet 64 at the inlet terminal 62 for introducing cooling water into the induction coil, and a cooling water outlet 65 at the outlet terminal 63 for discharging cooling water from the induction coil. Both the cooling water inlet 64 and the cooling water outlet 65 are equipped with a valve switch 66 to control the flow of cooling water into and out of the induction coil.

[0034] After the molten alloy is poured into the mold body through the pouring cap 3, technicians can set the cooling rate according to the alloy characteristics. By controlling the power of the induction coil 6, the temperature of the pouring cap 3 can be controlled, allowing some impurities in the molten alloy inside the mold body sufficient time to float to the surface. The molten alloy at the pouring cap 3 can be fully replenished into the mold body 2, thereby optimizing the solidification process of the molten alloy, reducing the generation of casting defects, and improving the quality of the ingot.

[0035] A refractory material layer 7 is also provided on the connection surface between the cap body 31 and the mold body 2; in this embodiment, the refractory material layer is made of magnesia or clay. The refractory material layer 7 between the cap body 31 and the mold body 2 strengthens the connection between them, preventing cracking or detachment of the connection surface due to high temperature or pressure changes; simultaneously, the refractory material layer 7 absorbs and disperses thermal stress caused by temperature changes, reducing equipment damage caused by concentrated thermal stress. The cap body 31 is made of insulating cotton or carbon felt surrounded by an iron plate, further enhancing the insulation performance of the casting cap 3.

[0036] refer to Figure 1 As shown, the clamping mechanism 4 includes a clamping body 41 for clamping the mold; the clamping body 41 is located on one side of the mold body 2, and the clamping body 41 is arranged perpendicular to the connection surface of the first mold 21 and the second mold 22; both ends of the clamping body 41 are bent forward to form a first support plate 42 and a second support plate 43 perpendicular to the clamping body 41; the first support plate 42 is in close contact with the first mold 31 through a fixing rod 44; a nut 45 is provided on the second support plate 43, and a lead screw 46 is installed in the nut 45, and one end of the lead screw 46 is in close contact with the outer surface of the second mold 22; by the lead screw 46 being screwed in or out of the nut 45, the second mold 22 is in close contact with or released from the first mold 21.

[0037] In practical use, by placing the mold body 2 between the fixed rod 44 and the lead screw 46, the fixed rod 31 is in close contact with the outer surface of the first mold 31. At the same time, by rotating the lead screw 46, the distance between the lead screw 46 and the fixed rod 44 can be controlled, and one end of the lead screw 46 is in close contact with the outer surface of the second mold 22, pushing the second mold 22 to be tightly connected with the first mold 21. This precisely controls the clamping force between the second mold 22 and the first mold 21, ensuring that the mold 2 is clamped between the fixed rod 44 and the lead screw 46, and preventing the alloy melt from leaking out due to deformation of the clamping mechanism after repeated use at high temperatures.

[0038] The mold body 2 is provided with several symmetrically distributed first lifting lugs 8 on both sides, and the pouring cap 3 is provided with several symmetrically distributed second lifting lugs 9 at both ends. The first lifting lugs 8 and the second lifting lugs 9 are used for lifting or moving the mold body 2 and the pouring cap 3, respectively. The symmetrical distribution on both sides makes the force distribution more uniform during the lifting process.

[0039] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model and do not limit the utility model to the specific implementations described. Obviously, other modifications and variations can be made based on the content of this specification. The embodiments selected and specifically described in this specification are intended to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. They are not intended to limit the utility model, and any simple modifications to this utility model fall within the protection scope of this utility model.

Claims

1. A mold for melting and casting alloy ingots, characterized in that, The system includes a base, a mold body, and a pouring cap connected in sequence; the pouring cap includes a cap body and a channel that penetrates the cap body; the channel communicates with the interior of the mold body and is used to pour molten alloy into the interior of the mold body. The channel is integrally formed from the pre-placed bricks of the heat-insulating cap, and an annular heat-insulating cavity is provided between the channel and the cap body; a graphite ring and an induction coil are provided inside the annular heat-insulating cavity; The induction coil includes a coil body surrounding the graphite ring and an inlet terminal and an outlet terminal respectively located at both ends of the coil body; the inlet terminal and the outlet terminal both extend through the cap body and are electrically connected to an external coil heating control device. The induction coil inlet terminal is provided with a cooling water inlet for introducing cooling water into the induction coil, and the outlet terminal is provided with a cooling water outlet for discharging the cooling water from the induction coil. The mold body includes a first mold and a second mold detachably mounted on the first mold, and a mold cavity is formed between the first mold and the second mold, which is connected to the channel.

2. The alloy melting and casting ingot mold according to claim 1, characterized in that, It also includes a clamping mechanism, which includes a clamp for clamping the mold body; the clamp is located on one side of the mold body and is arranged perpendicular to the connection surface between the first mold and the second mold; Both ends of the clamp are bent forward to form a first support plate and a second support plate perpendicular to the clamp; the first support plate is in close contact with the first mold through a fixed rod; a nut is provided on the second support plate, and a lead screw is installed inside the nut, with one end of the lead screw in close contact with the outer surface of the second mold; by the lead screw being screwed in or out of the nut, the second mold and the first mold are in close contact or released.

3. The alloy melting and casting ingot mold according to claim 1, characterized in that, The first mold and the second mold have a first groove and / or a first locking block on their contact surfaces; the second mold and the first mold have a second locking block that matches the first groove and / or a second groove that matches the first locking block on their contact surfaces; the first mold is connected to the second groove and / or the second locking block of the second mold one-to-one through the first groove and / or the first locking block.

4. The alloy melting and casting ingot mold according to claim 1, characterized in that, The mold cavity is coated with a release agent.

5. The alloy melting and casting ingot mold according to claim 1, characterized in that, The base, the mold body, and the pouring cap are sequentially stacked and assembled.

6. The alloy melting and casting ingot mold according to claim 1, characterized in that, The mold body has several symmetrically distributed first lifting lugs on both sides, and the pouring cap has several symmetrically distributed second lifting lugs at both ends.

7. The alloy melting and casting ingot mold according to claim 1, characterized in that, A refractory material layer is also provided on the connecting surface between the cap body and the mold body. The refractory material layer is made of magnesia or clay.

8. The alloy melting and casting ingot mold according to claim 1, characterized in that, The cap body is made of insulating cotton or carbon felt; the pre-placed bricks of the insulating cap are made of magnesia, clay or corundum.

9. The alloy melting and casting ingot mold according to claim 1, characterized in that, A valve switch is provided on both the cooling water inlet and the cooling water outlet.

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