Melting equipment for spheroidizing agent production

Abstract

The utility model provides melting equipment for nodulizer production, which comprises a melting furnace component and a stirring rod, the stirring rod is arranged at the upper part of the melting furnace component, and the bottom end of the stirring rod is inserted into the melting furnace component; the melting furnace assembly comprises a melting cavity, an induction coil and a resistance heater, the induction coil is arranged on the side wall of the melting cavity, and the resistance heater is arranged at the bottom of the melting cavity; the stirring rod comprises a core rod and an outer pipe, the core rod is arranged in the outer pipe, a plurality of air holes are formed in the side wall of the outer pipe, and inert gas is filled into the core rod and enters the molten alloy through the air holes. The continuous stirring effect of the stirring rod ensures that heat in the solution is uniformly distributed, and segregation of certain metal components in the nodulizer is prevented, so that the melting quality of the nodulizer is improved. And the induction coil and the resistance heater act together to ensure uniform temperature distribution in the melting cavity, so that the heat loss is effectively reduced, the risk of local overheating is avoided, and the melting quality of the nodulizer is further improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to metal melting technical field, concretely is a kind of for spheroidizing agent production and melt equipment. BACKGROUND

[0002] Spheroidizing agent is an additive used in cast iron production, by promoting the carbon in hot metal to be in the form of spheroidal graphite, significantly improve the mechanical properties (such as strength, toughness) and surface quality of cast iron. Its smelting quality directly determines the high or low of graphite spheroidization rate in cast iron.

[0003] In the production process of spheroidizing agent, the mixed multiple metals are usually melted by using traditional melting furnace, and then poured, crushed and screened into products. However, there are some defects in using traditional melting furnace, the main problem is that the layout of resistance heater or induction coil is unreasonable, which leads to significant temperature difference between upper and lower areas inside the melting furnace. This temperature difference can affect the uniformity of spheroidizing agent composition. In addition, during the melting process, due to uneven heating of metal materials, some alloy components may segregate, which further affects the overall quality of spheroidizing agent. SUMMARY

[0004] In order to overcome some of the problems mentioned in the background above, the present application provides a melting equipment for spheroidizing agent production.

[0005] The technical scheme adopted by the utility model is as follows: a melting equipment for spheroidizing agent production, comprising a melting furnace assembly and a stirring rod, the stirring rod is arranged at the upper part of the melting furnace assembly, the bottom end of the stirring rod is inserted into the melting furnace assembly;

[0006] The melting furnace assembly comprises a melting cavity, an induction coil and a resistance heater, the induction coil is arranged on the side wall of the melting cavity, and the resistance heater is arranged at the bottom of the melting cavity;

[0007] The stirring rod comprises a core rod and an outer tube, the core rod is arranged inside the outer tube, the side wall of the outer tube is provided with a plurality of air holes, inert gas is filled into the core rod, and enters the molten alloy through the air holes.

[0008] Further, the stirring rod further comprises a connecting sleeve and a limiting block, the connecting sleeve is used to connect the core rod and the outer tube, the limiting block is arranged at the lower part of the connecting sleeve, the limiting block is arranged at the upper part of the air hole, the limiting block is used to limit the position of the bottom end of the stirring rod inserted into the melting cavity, and the top of the core rod is connected with an external driver.

[0009] Further, the rack, the fixing frame, the feeding platform and the pushing mechanism are further included, the feeding platform is connected with the upper part of the rack, the fixing frame is arranged on the feeding platform, the melting furnace assembly is fixedly connected with the feeding platform, the pushing mechanism is respectively connected with the rack and the feeding platform at both ends, and the fixing frame is arranged in correspondence with the stirring rod.

[0010] The rack includes the lower cushion block and the connecting block, the connecting block is connected with one side of the feeding platform through the connecting rod, and the lower cushion block is connected with the bottom of the melting furnace assembly.

[0011] Further, the melting furnace assembly further includes the upper ring, the furnace body, the base and the upper fixing ring, the furnace body is arranged between the upper ring and the base, the upper ring is arranged on the upper surface of the feeding platform, the upper fixing ring is fixedly connected with the lower surface of the feeding platform, and a plurality of support plates are fixedly connected between the upper fixing ring and the base.

[0012] The furnace body is sequentially provided with the crucible, the furnace lining, the induction layer and the shell body from outside to inside, the melting cavity is arranged in the crucible, the induction coil is arranged in the induction layer, and the induction layer further includes the cooling pipe arranged in correspondence with the induction coil.

[0013] The base is provided with the groove, the groove is arranged in correspondence with the bottom of the furnace body and the bottom of the crucible, and the resistance heater is arranged in the groove.

[0014] Further, the pushing mechanism includes the push rod, the connecting piece and the support, the push rod is respectively provided with the connecting piece at both ends, the support is connected with the connecting piece in an axis manner, and the two supports are fixedly connected with the feeding platform and the rack.

[0015] Further, the fixing frame includes the limiting ring, the limiting ring is arranged at the upper part of the melting cavity, the limiting block is connected with the stirring rod, and the bottom end of the stirring rod is inserted into the melting cavity after being inserted into the limiting ring.

[0016] Compared with the prior art, the beneficial effects of the present application are as follows:

[0017] The continuous stirring effect of the stirring rod ensures that the heat in the solution is uniformly distributed, prevents the segregation of some metal components in the spheroidizing agent, and thus improves the melting quality of the spheroidizing agent.

[0018] The induction coil and the resistance heater jointly act to ensure that the temperature distribution in the melting cavity is uniform, effectively reduces heat loss and avoids the risk of local overheating, and further improves the melting quality of the spheroidizing agent. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1The utility model discloses a melt equipment for nodulizer production schematic diagram for the embodiment of the utility model;

[0020] Figure 2 The utility model discloses a melt equipment for nodulizer production overhead schematic diagram for the embodiment of the utility model;

[0021] Figure 3 The utility model discloses a melt equipment for nodulizer production left view schematic diagram for the embodiment of the utility model;

[0022] Figure 4 For Figure 2 The middle along A-A section view schematic diagram is shown in the figure.

[0023] Figure 5 For Figure 1 The middle stirring rod schematic diagram.

[0024] In the figure,

[0025] 1, frame, 11, lower cushion block, 12, connecting block, 2, fixed frame, 21, limit ring, 3, stirring rod, 31, core rod, 32, connecting sleeve, 33, outer tube, 331, air hole, 34, limit block, 4, feeding platform, 41, connecting shaft, 5, melt furnace assembly, 51, upper ring, 52, melt cavity, 53, furnace body, 531, shell, 532, induction layer, 533, furnace lining, 534, crucible, 54, support plate, 55, base, 56, upper fixed ring, 57, induction coil, 58, cooling pipe, 59, resistance heater, 6, push-out mechanism, 61, push rod, 62, connecting piece, 63, support. DETAILED DESCRIPTION

[0026] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and apparently, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments; based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor belong to the range protected by the utility model.

[0027] In the description of the utility model, it is understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model.

[0028] As Figures 1-5As shown, in some embodiments, a melting device for the production of spherification agent includes a melting furnace assembly 5 and a stirring rod 3. Wherein the stirring rod 3 is installed in the upper region of the melting furnace assembly 5, and the lower end portion is inserted into the internal space of the melting furnace assembly 5. The molten alloy is stirred by the stirring rod 3 to improve the uniform quality of the molten alloy.

[0029] Specifically, the melting furnace assembly 5 includes a melting cavity 52, an induction coil 57 and a resistance heater 59. Wherein the induction coil 57 is carefully installed at the side wall position of the melting cavity 52, which can generate strong induced current to form a uniform heat field in the melting cavity 52, so that the solid alloy in the melting cavity 52 is heated to melt. And the resistance heater 59 is arranged at the bottom region of the melting cavity 52, which heats the bottom of the melting cavity 52 by resistance heating principle. The heat in the melting cavity 52 is evenly distributed to provide continuous and stable heat for the molten alloy, ensuring the continuity and uniformity of the melting process.

[0030] In addition, the stirring rod 3 includes a core rod 31 and an outer tube 33. The core rod 31 is fixed inside the outer tube 33 to form a stable structure. The side wall of the outer tube 33 is uniformly distributed with a plurality of gas permeable holes 331. The design of these gas permeable holes 331 enables the molten alloy to exchange gas with the external environment during stirring, thereby improving the quality of the molten alloy. In particular, the core rod 31 is provided with an inner hole, the bottom of which is in communication with the outer tube 33, so that gas can enter the outer tube 33 from the core rod 31 and then diffuse into the molten alloy.

[0031] It is particularly important to note that the operation process of the present embodiment includes: starting the power supply, preheating the melting cavity 52, then placing the alloy to be melted into the melting cavity 52, and heating to melt, thereby forming an alloy solution.

[0032] In this process, the core rod 31 is slowly inserted into the alloy solution. At the same time, the core rod 31 is filled with inert gas by an external gas pump, and these gases effectively penetrate into the molten alloy through the gas permeable holes 331 to form tiny gas bubbles. Under the continuous stirring action of the stirring rod 3, the gas bubbles absorb oxygen in the alloy solution during the rising process, thereby reducing the oxidation loss of rare earth elements in the alloy, and forming an inert gas protective layer on the surface of the solution, further reducing the oxidation loss of the alloy.

[0033] The continuous stirring action of the stirring rod 3 ensures that the heat in the solution is evenly distributed, preventing the segregation of certain metal components in the alloy, thereby improving the melting quality of the alloy.

[0034] The induction coil 57 and the resistance heater 59 work together to ensure uniform temperature distribution in the melting cavity 52, effectively reduce heat loss and avoid the risk of local overheating.

[0035] Further, in some embodiments, the stirring rod 3 also includes a connecting sleeve 32 and a limiting block 34. The connecting sleeve 32 is used to fix the connecting core rod 31 and the outer tube 33 as a whole, and the limiting block 34 is arranged at the lower part of the connecting sleeve 32. It is worth mentioning that when the alloy is melted, the stirring rod 3 is moved upwards to be away from the molten liquid.

[0036] In particular, the limiting block 34 is arranged at the upper part of the air hole 331, and its main function is to limit the position of the bottom end of the stirring rod 3 inserted into the melting cavity 52, so as to ensure the correct position of the stirring rod 3 in the melting cavity 52.

[0037] In addition, the top of the core rod 31 is connected with the external driver, so as to realize the driving and control of the stirring rod 3. This design enables the stirring rod 3 to effectively stir in the melting cavity 52, and the arrangement of the limiting block 34 ensures that the stirring rod 3 will not touch the side wall of the melting cavity 52 due to excessive insertion, thereby improving the stability and service life of the equipment. In this way, the production process of the nodulizer can be more efficient and safe, and the maintenance and operation are also facilitated.

[0038] Further, in some embodiments, the device also includes a rack 1, a fixing frame 2, a feeding platform 4 and a pushing mechanism 6. The feeding platform 4 is connected with the upper part of the rack 1, which ensures the stable supply of materials. The fixing frame 2 is arranged on the feeding platform 4, and the fixing frame 2 is arranged corresponding to the stirring rod 3, which provides a stable mounting basis for the stirring rod 3, ensures the effective stirring of the stirring rod 3 during the melting process, and improves the melting efficiency and quality.

[0039] The melting furnace assembly 5 is fixedly connected with the feeding platform 4, which ensures the continuity and stability of the melting furnace assembly 5. The pushing mechanism 6 is connected with the rack 1 and the feeding platform 4 at both ends, and its function is to tilt the feeding platform 4 together with the melting furnace assembly 5, and pour out the molten alloy solution in it.

[0040] In particular, the rack 1 includes a lower pad 11 and a connecting block 12, and the connecting block 12 is connected with one side of the feeding platform 4 through the connecting shaft 41. This design makes the connection between the rack 1 and the feeding platform 4 more firm, and also facilitates the rotation of the feeding platform 4 along the connecting shaft 41. The lower pad 11 is connected with the bottom of the melting furnace assembly 5, which provides support for the melting furnace assembly 5 and ensures the stability of the melting furnace assembly 5.

[0041] Further, in some embodiments, the melting furnace assembly 5 further comprises an upper ring 51, a furnace body 53, a base 55, and an upper fixing ring 56. The furnace body 53 is arranged between the upper ring 51 and the base 55, the upper ring 51 is arranged on the upper surface of the feeding platform 4, and the upper fixing ring 56 is fixedly connected with the lower surface of the feeding platform 4. A plurality of support plates 54 are fixedly connected between the upper fixing ring 56 and the base 55, which provide additional structural stability for the melting furnace assembly 5.

[0042] The furnace body 53 is sequentially provided with a crucible 534, a furnace lining 533, an induction layer 532, and a shell 531 from the outside to the inside. The melting cavity 52 is arranged in the crucible 534, the induction coil 57 is arranged in the induction layer 532, and the induction layer 532 is further provided with a cooling pipe 58 corresponding to the induction coil 57 to ensure the cooling effect of the induction coil 57 during operation and prolong its service life. The precise arrangement of the induction coil 57 in the induction layer 532 makes the induction heating process more efficient, and the arrangement of the cooling pipe 58 can quickly remove the heat generated by the induction coil 57 to prevent overheating, ensuring the stable operation and long-term durability of the induction coil 57.

[0043] The base 55 is provided with a recess corresponding to the bottom of the crucible 534 of the furnace body 53, and the resistance heater 59 is arranged in the recess. The arrangement of the resistance heater 59 enables the melting furnace assembly 5 to more uniformly heat the alloy in the crucible 534 during the heating process, thereby improving the melting efficiency and quality. The precise position and design of the resistance heater 59 ensure the uniformity of heating, reduce heat loss, and avoid local overheating to ensure high-quality production of the nodulizer.

[0044] Further, in some embodiments, the push-out mechanism 6 comprises a push rod 61, a connecting piece 62, and a support 63. Specifically, the two ends of the push rod 61 are respectively provided with the connecting pieces 62, which can be connected with the two ends of the push rod 61. In addition, the supports 63 are connected with the connecting pieces 62 through shaft connection, ensuring the stability and reliability of the mechanism. In order to further enhance the stability of the equipment and the convenience of operation, the two supports 63 are respectively connected with the feeding platform 4 and the rack 1 through fixed connection.

[0045] Further, in some embodiments, the fixing frame 2 is specially designed with a limiting ring 21, which is accurately arranged at the upper position of the melting cavity 52. In addition, the limiting block 34 is correspondingly arranged with the stirring rod 3, ensuring the stability and precise control of the stirring rod 3. The bottom end of the stirring rod 3 can be inserted from the opening of the limiting ring 21 and smoothly enter the inside of the melting cavity 52 for effective stirring operation.

[0046] The fixed frame 2 is provided with a rotating shaft, when stirring is needed, the limiting ring 21 is moved to the upper part of the melting cavity 52, when feeding and pouring the molten liquid, the limiting ring 21 is moved to the place far from the melting cavity 52.

[0047] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another, without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can also include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0048] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application.

Claims

1. A melting device for producing spheroidizing agents, characterized in that, It includes a melting furnace assembly (5) and a stirring rod (3), wherein the stirring rod (3) is located at the upper part of the melting furnace assembly (5) and the bottom end of the stirring rod (3) is inserted into the melting furnace assembly (5); The melting furnace assembly (5) includes a melting chamber (52), an induction coil (57), and a resistance heater (59). The induction coil (57) is disposed on the side wall of the melting chamber (52), and the resistance heater (59) is disposed at the bottom of the melting chamber (52). The stirring rod (3) includes a core rod (31) and an outer tube (33). The core rod (31) is disposed inside the outer tube (33). The side wall of the outer tube (33) is provided with a plurality of vent holes (331). Inert gas is filled into the core rod (31) and enters the molten alloy through the vent holes (331).

2. The melting equipment for producing spheroidizing agents according to claim 1, characterized in that, The stirring rod (3) also includes a connecting sleeve (32) and a limiting block (34). The connecting sleeve (32) is used to connect the core rod (31) and the outer tube (33). The limiting block (34) is located at the lower part of the connecting sleeve (32) and at the upper part of the vent hole (331). The limiting block (34) is used to restrict the position of the bottom end of the stirring rod (3) inserted into the melting chamber (52). The top of the core rod (31) is connected to an external driver.

3. The melting equipment for producing spheroidizing agents according to claim 2, characterized in that, It also includes a frame (1), a fixed frame (2), a feeding platform (4) and an ejection mechanism (6). The feeding platform (4) is connected to the upper part of the frame (1). The fixed frame (2) is set on the feeding platform (4). The melting furnace assembly (5) is fixedly connected to the feeding platform (4). The two ends of the ejection mechanism (6) are respectively connected to the frame (1) and the feeding platform (4). The fixed frame (2) is correspondingly set to the stirring rod (3). The frame (1) includes a lower pad (11) and a connecting block (12). The connecting block (12) is connected to one side of the loading platform (4) via a connecting rod. The lower pad (11) is connected to the bottom of the melting furnace assembly (5).

4. The melting equipment for producing spheroidizing agents according to claim 3, characterized in that, The melting furnace assembly (5) also includes an upper ring (51), a furnace body (53), a base (55), and an upper fixing ring (56). The furnace body (53) is disposed between the upper ring (51) and the base (55). The upper ring (51) is disposed on the upper surface of the feeding platform (4). The upper fixing ring (56) is fixedly connected to the lower surface of the feeding platform (4). Multiple support plates (54) are fixedly connected between the upper fixing ring (56) and the base (55). The furnace body (53) is provided with a crucible (534), a furnace lining (533), an induction layer (532), and a shell (531) from the outside to the inside. The melting chamber (52) is located inside the crucible (534). The induction coil (57) is located inside the induction layer (532). The induction layer (532) is also provided with a cooling pipe (58). The cooling pipe (58) is arranged correspondingly to the induction coil (57). The base (55) is provided with a groove, which is provided corresponding to the bottom of the crucible (534) at the bottom of the furnace body (53), and the resistance heater (59) is provided in the groove.

5. The melting equipment for producing spheroidizing agents according to claim 3, characterized in that, The ejection mechanism (6) includes a push rod (61), a connector (62) and a support (63). The push rod (61) is provided with the connector (62) at both ends. The support (63) is axially connected to the connector (62). The two supports (63) are respectively fixedly connected to the loading platform (4) and the frame (1).

6. The melting equipment for producing spheroidizing agents according to claim 3, characterized in that, The fixing frame (2) includes a limiting ring (21), which is located on the upper part of the melting chamber (52). The limiting block (34) is connected to the stirring rod (3). The bottom end of the stirring rod (3) is inserted into the melting chamber (52) after being inserted through the limiting ring (21).

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