Spherification teapot bag

Abstract

The utility model belongs to the field of foundry technology, especially relates to spheroidizing pouring teapot package. One kind is spheroidizing pouring teapot package, include: teapot package main part, is provided with a processing room in inner bottom wall, the processing room is oval pit formula structure, wherein, the height diameter ratio of teapot package main part >1.5, by teapot package main part setting into different height diameter ratio (the ratio of axial height and inner diameter), not only can reduce the iron liquid liquid level area in teapot package main part, reduce the harm of hydrogen oxygen nitrogen element absorption caused by iron liquid and atmosphere contact, can also reduce the temperature drop of iron liquid.

Description

Technical Field

[0001] This utility model belongs to the field of casting technology, and in particular relates to spheroidized casting teapot bags. Background Technology

[0002] In the production of ductile iron, the spheroidizing ladle is a key piece of equipment used to add spheroidizing agents (such as rare earth silicon-magnesium alloys) to the molten iron for spheroidization treatment. However, traditional spheroidizing ladles suffer from the following interrelated technical defects, which collectively restrict casting quality and production costs: Temperature control and energy consumption deficiencies: The height-to-diameter ratio (height / inner diameter) of traditional spheroidizing ladles is typically ≤1.5, resulting in an excessively large surface area of ​​the molten iron. This increases the heat exchange area between the molten iron and air, leading to a rapid temperature drop. To compensate for this temperature drop, the tapping temperature needs to be increased by 50-100℃, significantly increasing energy consumption.

[0003] Defects in spheroidizing agent absorption: Traditional dam-type treatment chambers have shallow trench structures, resulting in a large area for spheroidizing agent spreading and a thin layer of spheroidizing agent. During tapping, the molten iron directly impacts the spheroidizing agent, causing it to float and burn prematurely, leading to an earlier and shorter spheroidizing explosion. This results in a high spheroidizing agent burn-off rate and insufficient absorption.

[0004] Therefore, there is an urgent need to develop a spherical casting teapot bag to solve the above-mentioned technical problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore, the above description is not considered to constitute information related to the technology. Utility Model Content

[0006] This disclosure provides at least one spheroidized casting teapot bag.

[0007] In a first aspect, embodiments of this disclosure provide a spheroidized casting teapot bag, comprising: In one alternative embodiment, the teapot body has a processing chamber on its inner bottom wall; The processing chamber has an elliptical recessed structure; wherein, the height-to-diameter ratio of the main body of the teapot is greater than 1.5.

[0008] In one alternative embodiment, the height-to-diameter ratio of the body of the teapot is 1.5-2.0:1.

[0009] In one alternative embodiment, the side wall of the teapot body is provided with a pouring channel, including a water inlet, a teapot neck and a pouring spout, forming a closed teapot structure for drawing molten iron from the bottom to isolate slag and gas.

[0010] In one alternative embodiment, the bottom of the processing chamber is circular, and the upper opening extends into an ellipse along the gate direction, with the bottom diameter being smaller than the upper opening diameter.

[0011] In one alternative embodiment, the inner wall of the processing chamber is sloped at an angle of 30°-45° to reduce slag adhesion.

[0012] In one optional embodiment, the body of the teapot is lined with refractory material, and the thickness of the refractory layer on the bottom wall of the teapot body is greater than the thickness of the refractory layer on the side wall, with the thickness of the bottom wall refractory layer being 1.2-1.5 times the thickness of the side wall.

[0013] In one optional embodiment, the treatment chamber is located near the rear side of the kettle body, opposite the water inlet, and the angle between the center line of the water inlet and the center line of the treatment chamber is 160°-180°.

[0014] In one optional embodiment, two positioning posts are symmetrically arranged on the outer wall of the pot bag body, and a lifting frame is rotatably sleeved on the positioning posts; The side wall of the hoisting frame is hinged with a first buckle; A protrusion is provided on the outer wall of the main body of the pot bag corresponding to the first buckle; The first buckle engages with the protrusion to limit the rotation of the tea bag body relative to the lifting frame.

[0015] In one optional embodiment, a positioning plate is fixed to the outer wall of the hoisting frame, and a second buckle is hinged to the side wall of the positioning plate; A rotating wheel is provided at the outer end of the positioning post, and the second buckle is adapted to be inserted into the rotating wheel to limit the rotation of the rotating wheel.

[0016] The beneficial effects of this invention are as follows: This invention provides a spheroidizing casting teapot bag. By setting the body of the teapot bag to a height-to-diameter ratio of 1.5-2.0:1 (the ratio of axial height to inner diameter), it not only reduces the surface area of ​​the molten iron inside the teapot bag body, thus reducing the harmful effects of molten iron absorbing hydrogen, oxygen, and nitrogen elements due to contact with the atmosphere, but also reduces the temperature drop of the molten iron. The elliptical design of the concave treatment chamber (circular bottom, extended upper opening) increases the thickness of the spheroidizing agent accumulation by 50%, delaying the eruption time.

[0017] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention are realized and obtained through the structures particularly pointed out in the description and the accompanying drawings.

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, preferred embodiments are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the specific embodiments or related technologies of this utility model, the drawings used in the description of the specific embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 A perspective view of a spheroidized casting teapot bag provided in an embodiment of this disclosure; Figure 2 A perspective cross-sectional view of a spheroidized casting teapot bag provided in an embodiment of this disclosure; Figure 3 A top view of a spheroidized casting teapot bag provided in an embodiment of this disclosure; Figure 4 This is a front view of the body of the tea bag provided in an embodiment of this disclosure.

[0021] In the picture: 1. Body of the teapot bag; 11. Positioning post; 12. Hanging frame; 13. First buckle; 14. Protrusion; 15. Positioning plate; 16. Second buckle; 17. Rotary wheel; 2. Processing chamber; 3. Pouring channel; 31. Inlet; 32. Neck of the teapot; 33. Sprue. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] In this document, when it is mentioned that a first component is located on a second component, this can mean that the first component can be directly formed on the second component, or that a third component can be inserted between the first and second components. Furthermore, in the accompanying drawings, the thickness of the components may be exaggerated or reduced for the purpose of effectively describing the technical content.

[0024] In this document, exemplary embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as “at least one of…” modify the entire list of elements when following a list of elements, rather than individual elements in the list. For example, the expression “at least one of a, b, and c” should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0025] The terminology used herein is for the purpose of describing specific exemplary configurations only and is not intended to be limiting. As used herein, the singular articles “a,” “an,” and “the” may also be intended to include plural forms unless otherwise expressly stated herein. The terms “comprising,” “including,” and “having” are inclusive and thus specify the presence of features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein should not be construed as requiring them to be performed in the specific order discussed or shown, unless specifically identified as such. Additional or alternative steps may be employed.

[0026] As used herein, the phrases “in one embodiment,” “according to one embodiment,” “in some embodiments,” etc., generally refer to the fact that a particular feature, structure, or characteristic following the phrase can be included in at least one embodiment of this disclosure. Therefore, a particular feature, structure, or characteristic can be included in more than one embodiment of this disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms “example,” “exemplary,” etc., are used to “serve as an example, instance, or illustration.” Any implementation, aspect, or design described herein as “example” or “exemplary” is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. Rather, the use of the terms “example,” “exemplary,” etc., is intended to present concepts in a specific manner.

[0027] Research has revealed that in the field of ductile iron production, the spheroidizing ladle is a key piece of equipment used to add spheroidizing agents (such as rare earth silicon-magnesium alloys) to molten iron for spheroidization treatment. However, traditional spheroidizing ladles suffer from the following interrelated technical defects, which collectively restrict casting quality and production costs: Temperature control and energy consumption deficiencies: The height-to-diameter ratio (height / inner diameter) of traditional spheroidizing ladles is typically ≤1.5, resulting in an excessively large surface area of ​​the molten iron. This increases the heat exchange area between the molten iron and air, leading to a rapid temperature drop. To compensate for this temperature drop, the tapping temperature needs to be increased by 50-100℃, significantly increasing energy consumption.

[0028] Defects in spheroidizing agent absorption: Traditional dam-type treatment chambers have shallow trench structures, resulting in a large area for spheroidizing agent spreading and a thin layer of spheroidizing agent. During tapping, the molten iron directly impacts the spheroidizing agent, causing it to float and burn prematurely, leading to an earlier and shorter spheroidizing explosion. This results in a high spheroidizing agent burn-off rate and insufficient absorption.

[0029] Therefore, there is an urgent need to develop a spherical casting teapot bag to solve the above-mentioned technical problems.

[0030] The defects in the above solutions and the reasons for their occurrence are the results of the inventors' practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed in this disclosure should be considered as the inventors' contributions to this disclosure.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] The following detailed description, with reference to the accompanying drawings, describes some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0033] like Figures 1 to 4 As shown, at least one embodiment provides a spheroidized casting teapot bag, comprising: The ladle consists of a main body 1, a processing chamber 2, a pouring channel 3, and a hoisting and positioning mechanism. The main body 1 is welded from carbon steel plates and lined with refractory material. The ratio of the axial height to the inner diameter of the main body 1 is strictly controlled between 1.5 and 2.0:1. Furthermore, the main body 1 adopts a height-to-diameter ratio of 1.8:1 (axial height 1800mm, inner diameter 1000mm), which reduces the liquid surface area by 34% compared to the traditional 1.2:1 ladle type. This design benefits from increased absorption of rare earth silicon-magnesium alloys by ductile iron molten iron to improve spheroidization rate, thereby producing high-quality castings that meet mechanical performance requirements; reduced liquid surface area of ​​molten iron inside the ladle due to optimized and upgraded structure, reducing the harmful effects of molten iron absorbing hydrogen, oxygen, and nitrogen elements due to contact with the atmosphere; and improved insulation effect, reducing the temperature drop of molten iron inside the ladle, achieving the design effect of lowering the tapping temperature and saving energy costs. The main body 1 of the teapot has a pouring channel 3 on its side wall, consisting of an inlet 31, a neck 32, and a pouring gate 33. Molten iron enters from the bottom inlet 31, flows through the neck 32, and exits from the pouring gate 33, completely isolating the molten slag and gas from the surface. Figure 2 As shown, Figure 2 F1 indicates the direction of molten iron flow.

[0034] Reference Appendix Figure 2The teapot neck 32, located near the teapot body 1, is the connection point between the teapot neck 32 and the inner cavity of the teapot body 1. It forms a support frame for the refractory materials on both sides of the teapot body 1 and the teapot neck 32 lining, strengthening the adhesion of the refractory materials in these areas, improving the material's resistance to the scouring of high-temperature molten iron, and extending the service life of the teapot body 1 lining. The refractory material of the teapot neck 32 lining has a uniform wall thickness. Its main function is to ensure the safety of the teapot body 1 while containing molten iron, and to ensure the insulation effect of the lining wall thickness on the temperature drop of the molten iron inside the teapot body 1. It should be controlled to prevent excessively rapid cooling due to excessively thin lining, which could lead to incomplete casting and other quality accidents.

[0035] Reference Appendix Figure 1 and Figure 2 The teapot neck 32 is an example of the appearance of the teapot body 1 in this embodiment. The example highlights that the teapot neck 32 is a circular hollow column connected to the front of the teapot body 1 from bottom to top. The core ideas that distinguish this design from the traditional pouring bag that pours directly from the top are as follows: First, molten iron enters from the bottom inlet of the ladle body 1 and flows out through the channel from the teapot neck 32 to the gating point 33, ensuring clean molten iron for pouring into the mold and avoiding slag porosity defects. The spheroidizing reaction of molten iron is a complex process involving thermodynamics and chemical reactions, as well as deoxidation, desulfurization, and high-temperature oxidation. After the reaction, a large amount of slag is produced. Because its density is lower than that of molten iron, the slag floats on the surface of the molten iron. Even with multiple slag removals on-site, it can only be relatively clean. Therefore, if traditional spheroidizing ladle pouring is used, there is always a risk of a small amount of slag being poured into the mold. This design addresses this issue by improving the metallurgical quality of the molten iron from the above-mentioned reaction process and upgrading it to a bottom-injected "teapot-style" spheroidizing ladle, which can achieve the ideal slag filtering effect and prevent molten slag floating on the surface of the molten iron from being poured into the mold. Secondly, as extensively described above, the traditional spheroidizing ladle method involves pouring water directly from the ladle surface through the spout (i.e., gate 33). This method has drawbacks: the high-temperature molten iron and alloys absorb large amounts of H, O, and N gases due to the open surface and contact with the atmosphere, leading to corrosion and oxidation. Direct pouring of molten iron into the mold can cause porosity, or oxides can solidify within the mold, creating slag and affecting casting quality. This design, addressing the shortcomings of the traditional ladle, effectively avoids oxides on the liquid surface within the ladle body 1, prioritizing the pouring of the bottommost layer of molten iron free of slag and oxidation, ultimately improving casting quality.

[0036] Reference Appendix Figure 2 and Figure 3The processing chamber 2 is located on the inner bottom wall of the main body 1 of the pot. The processing chamber 2 is the most critical elliptical concave spheroidizing processing chamber in this embodiment, which is used to hold the spheroidizing agent and inoculant. Its bottom is circular, and the upper opening has an enlarged circular area. The main body structure is an irregular inverted cylindrical shape with an elliptical shape, which is extended from the X-axis centerline towards the Y-axis in the direction of the pouring nozzle. Its functions include: facilitating the construction of the treatment chamber 2; by increasing the draft angle, it is easier to smoothly remove the inner liner of the ladle body 1 without damaging the refractory lining of the ladle; the purpose of extending the upper opening of the treatment chamber 2 along the ladle spout direction into an elliptical shape is to avoid rotating the ladle body 1 to 180° to empty the molten iron in the treatment chamber 2 during the pouring process, thus facilitating on-site pouring operations and saving pouring time. The design focuses on avoiding the risk of incomplete molten iron emptying from the treatment chamber 2, reducing its volume, and causing the risk of poor casting quality due to atmospheric oxidation of residual solid iron during the next batch of spheroidizing iron tapping; the circular bottom design of the treatment chamber 2 and the sloping facade of the treatment chamber 2 also serve to make it easier to remove and clean the slag adhering to the surface of the refractory material in the treatment chamber due to the thermodynamic impact and oxidation reaction of various alloying elements during the high-temperature molten iron spheroidizing explosion reaction. The upgraded embodiment is superior to the traditional dam-type treatment chamber, where the sharp corner of the bottom arc surface and the 180° central axis produces oxide or sulfide slag that is difficult to clean. This affects the next batch of molten iron, increases various complex chemical impurities during the spheroidizing process, and may even lead to sulfur reversion, directly reducing the spheroidization rate and affecting the mechanical properties of the castings.

[0037] Reference Appendix Figure 2 The thickness of the refractory layer on the bottom wall of the main body of the teapot is 1.2-1.5 times that of the side walls. For example... Figure 3 As shown, the bottom wall withstands the static pressure of the entire ladle of molten iron and the impact of spheroidization explosion. The thickened design can extend the lining life by more than 2 times; the uniform wall thickness of the side walls balances heat preservation and safety.

[0038] Reference Appendix Figure 4The hoisting and positioning mechanism includes: two positioning posts 11 symmetrically arranged on the outer wall of the jug body 1; a hoisting frame 12 rotatably sleeved on the outer wall of the positioning posts 11; a positioning plate 15 fixed to the side wall of the hoisting frame 12; a second latch 16 hinged to the side wall of the positioning plate 15; a first latch 13 hinged to the side wall of the hoisting frame 12; and a protrusion 14 fixed to the outer wall of the jug body 1. The first latch 13 and the protrusion 14 cooperate to limit the rotation of the jug body 1 relative to the hoisting frame 12. The second latch 16 engages with the rotating wheel 17, locking the rotation by inserting the second latch 16 into the gap between the spokes of the rotating wheel 17. These two mechanisms provide double protection, eliminating the risk of molten iron tipping over during hoisting. The first buckle 13 and the second buckle 16 are two important safety buckle devices to prevent accidents caused by the automatic overturning of the ladle body 1 during operation. The simultaneous activation of the two buckles at different points provides double insurance, which aims to ensure that the ladle body 1 remains locked during the rapid movement of the molten iron being hoisted and during the slow movement of the pouring process. The molten iron inside the ladle body 1 will not cause the structural center of gravity to shift or the force to be uneven due to occasional abnormal swinging or collision, thus eliminating the risk of possible ladle tipping accidents.

[0039] In this embodiment, the treatment chamber 2 is designed as a recessed spheroidizing treatment chamber, which has an irregular structure with a circular bottom and an elliptical top. Unlike the traditional dam-type spheroidizing casting ladle, which has a smaller planar area and a depth greater than the height of the dam, the spheroidizing agent and inoculant have a smaller spreading area and a larger accumulation thickness after being added. This design can delay the spheroidizing burst and prolong the molten iron burst reaction time, thereby reducing the burning loss of spheroidized alloy, reducing the amount added to save costs, and improving the spheroidization rate.

[0040] In this embodiment, the coordination of the pouring channel 3, the teapot neck 32, the gating gate 33, and the inlet 31 differs from the traditional spheroidizing ladle method of directly pouring molten iron from the ladle surface through the spout. This upgrade results in a closed, teapot-style integrated spheroidizing ladle, consisting of three main parts: an elliptical inlet 31 at the bottom, a vertical cylindrical teapot neck 32 channel, and a smoothly rounded gating gate 33. This design achieves optimal slag filtering and ensures that the molten iron poured from the bottom into the mold is isolated from the atmosphere, reducing the possibility of slag porosity and gas porosity defects in the casting.

[0041] In the description of the embodiments of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0042] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, terms such as "first," "second," and other numerical terms used herein do not imply order or sequence unless expressly indicated herein. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer, or segment discussed above may be referred to as the second element, component, region, layer, or segment.

[0043] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A spheroidized casting teapot bag, characterized in that, include: The main body of the teapot (1) has a processing chamber (2) on its inner bottom wall; The processing chamber (2) is an elliptical recessed structure; wherein, the height-to-diameter ratio of the main body (1) of the teapot is greater than 1.

5.

2. The spheroidized casting teapot bag as described in claim 1, characterized in that, The height-to-diameter ratio of the body (1) of the teapot is 1.5-2.0:

1.

3. The spheroidized casting teapot bag as described in claim 1, characterized in that, The side wall of the teapot body (1) is provided with a pouring channel (3), including a water inlet (31), a teapot neck (32) and a pouring gate (33) to form a closed teapot structure, which is used to extract molten iron from the bottom of the teapot body (1) to isolate slag and gas.

4. The spheroidized casting teapot bag as described in claim 2, characterized in that, The bottom of the processing chamber (2) is circular, and the upper opening extends into an ellipse along the direction of the gate (33), with the bottom diameter being smaller than the upper opening diameter.

5. The spheroidized casting teapot bag as described in claim 4, characterized in that, The inner wall of the processing chamber (2) is sloping with an angle of 30°-45° to reduce slag adhesion.

6. The spheroidized casting teapot bag as described in claim 1, characterized in that, The body of the teapot (1) is lined with refractory material. The thickness of the refractory layer on the bottom wall of the teapot body (1) is greater than the thickness of the refractory layer on the side wall. The thickness of the refractory layer on the bottom wall is 1.2-1.5 times the thickness of the side wall.

7. The spheroidized casting teapot bag as described in claim 3, characterized in that, The processing chamber (2) is located near the rear side of the main body (1) of the teapot, opposite to the water inlet (31), and the angle between the center line of the water inlet (31) and the center line of the processing chamber (2) is 160°-180°.

8. The spheroidized casting teapot bag as described in claim 1, characterized in that, The outer wall of the main body (1) of the pot bag is symmetrically provided with two positioning columns (11), and a hoisting frame (12) is rotatably sleeved on the positioning column (11). The side wall of the hoisting frame (12) is hinged with a first buckle (13); A protrusion (14) is provided on the outer wall of the main body (1) of the pot bag corresponding to the first buckle (13); The first buckle (13) engages with the protrusion (14) to limit the rotation of the pot bag body (1) relative to the hoisting frame (12).

9. The spheroidized casting teapot bag as described in claim 8, characterized in that, A positioning plate (15) is fixed to the outer wall of the hoisting frame (12), and a second buckle (16) is hinged to the side wall of the positioning plate (15). A rotating wheel (17) is provided at the outer end of the positioning post (11), and the second buckle (16) is adapted to be inserted into the rotating wheel (17) to limit the rotation of the rotating wheel (17).

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