Efficient spheroidizing ladle

Abstract

The efficient spheroidizing ladle comprises a hanging frame and a molten iron bucket, the hanging frame is arranged in a door frame shape and used for integrally supporting equipment, trunnions are symmetrically arranged on the two sides of the molten iron bucket, the trunnions are connected with the lower end of the hanging frame, the trunnions are rotationally connected with the lower end of the hanging frame, and support is provided for dumping of the molten iron bucket; a water retaining dam is arranged in the lower end of the molten iron bucket, an alloy pool is arranged in the lower end of the molten iron bucket and used for containing a spheroidizing agent, a nucleating agent and a covering agent, the alloy pool is arranged on one side of the water retaining dam, the cross section of the water retaining dam is arranged in a right trapezoid shape, and the inclined waist of the water retaining dam is connected with the alloy pool to slow down the impact speed of molten iron flowing into the alloy pool. And the alloying agent is prevented from being dispersed. The invention belongs to the technical field of metallurgical casting equipment, and particularly provides an efficient spheroidizing ladle which achieves sequential contact between alloy and molten iron through structural optimization and strengthens the overall sealing performance so as to improve the spheroidizing absorption rate and reduce oxidation and temperature drop.

Description

Technical Field

[0001] This invention belongs to the field of metallurgical casting equipment technology, specifically referring to a high-efficiency spheroidizing molten iron ladle. Background Technology

[0002] Nodularization is a crucial process in the production of ductile iron, and the spheroidizing ladle is the core equipment for this process, its performance directly affecting the spheroidization effect and casting quality. Traditional spheroidizing ladles generally suffer from poor sealing performance; the lid is difficult to seal completely after feeding, allowing air to easily enter the ladle during molten iron injection, leading to easy burning off of the spheroidizing agent and low spheroidization absorption rate; at the same time, the molten iron has sufficient contact with air, resulting in severe oxidation and rapid temperature drop, which not only affects the mechanical properties of ductile iron but also increases production costs.

[0003] Therefore, there is an urgent need for a spheroidized molten iron ladle with good sealing performance and high spheroidization efficiency to solve the above problems. Summary of the Invention

[0004] To address the problems of poor sealing, low spheroidization absorption rate, severe oxidation and temperature drop in traditional spheroidized molten iron ladles, this invention provides a highly efficient spheroidized molten iron ladle that achieves sequential contact between the alloy and molten iron through structural optimization and enhances overall sealing, thereby improving the spheroidization absorption rate and reducing oxidation and temperature drop.

[0005] The technical solution adopted by this invention is as follows: This invention provides a high-efficiency spheroidizing molten iron ladle, comprising a suspension frame and a molten iron bucket. The suspension frame is arranged in a door frame shape for overall support of the equipment. The molten iron bucket has symmetrical trunnions on both sides, which are connected to the lower end of the suspension frame. The trunnions are rotatably connected to the lower end of the suspension frame to provide support for the tilting of the molten iron bucket. A water-retaining dam is provided in the lower end of the molten iron bucket, and an alloy pool is provided in the lower end of the molten iron bucket for placing spheroidizing agent, inoculant, and covering agent. The alloy pool is located on one side of the water-retaining dam. The cross-section of the water-retaining dam is arranged in a right-angled trapezoid. The inclined waist of the water-retaining dam is connected to the alloy pool to reduce the impact speed of molten iron flowing into the alloy pool and prevent the alloying agent from being dispersed.

[0006] Furthermore, the top of the molten iron bucket is open, and the open end of the molten iron bucket is provided with a cap. The cap is provided with a ladle opening, which is located directly above the alloy pool for convenient and accurate material addition. A ladle cover is provided above the ladle opening, and one end of the ladle cover is hinged to the cap. After material addition, the ladle cover is closed to achieve a preliminary seal.

[0007] Furthermore, the upper side of the molten iron bucket is provided with an inlet and outlet, which are connected to the molten iron bucket. A guide dam is provided inside the upper end of the molten iron bucket. The guide dam is located above the side of the water-blocking dam away from the alloy pool. The guide dam is located on the side of the inlet and outlet. The upper end of the guide dam and the edge of the inlet and outlet form a funnel-shaped structure, which facilitates the rapid and stable flow of molten iron and reduces splashing of molten iron.

[0008] Furthermore, a speed reducer is provided on the outer side of the lower end of the suspension frame, and a tilting turntable is rotatably provided on the outer side of the lower end of the suspension frame. The input and output ends of the speed reducer are respectively connected to the tilting turntable and the trunnion. By rotating the tilting turntable, the speed is adjusted by the speed reducer and the trunnion is driven to rotate, so as to realize the stable tilting of the molten iron bucket, which facilitates the casting of molten iron after spheroidization treatment.

[0009] The beneficial effects achieved by the present invention using the above structure are as follows:

[0010] 1. After adding the material, close the ladle cover. After the molten iron is poured in, the inlet and outlet can be sealed to form a double sealing structure, which greatly reduces the entry of air, avoids the burning of the spheroidizing agent, and improves the spheroidizing absorption rate.

[0011] 2. A sealed environment reduces the contact between molten iron and air, thereby reducing oxidation and burn-off, while also reducing heat loss and slowing down the rate of temperature drop in the molten iron.

[0012] 3. The funnel-shaped structure of the guide dam facilitates the smooth flow of molten iron, while the right-angled trapezoidal design of the water-retaining dam prevents the alloying agent from being dispersed, ensuring a uniform and sufficient spheroidization reaction. Attached Figure Description

[0013] Figure 1 This is a front view of a high-efficiency spheroidizing ladle proposed in this scheme;

[0014] Figure 2 This is a side view of a high-efficiency spheroidizing ladle proposed in this scheme;

[0015] Figure 3 This is a schematic diagram of the molten iron bucket structure of a high-efficiency spheroidizing molten iron ladle proposed in this scheme;

[0016] Figure 4 This is a schematic diagram of the molten iron bucket in use for a high-efficiency spheroidizing molten iron ladle proposed in this solution.

[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: 1. Suspension frame; 2. Iron bucket; 3. Trunnion; 4. Dam; 5. Alloy pool; 6. Cover; 7. Cover opening; 8. Cover; 9. Inlet / outlet; 10. Guide dam; 11. Reducer; 12. Tilting turntable. Detailed Implementation

[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1-4 As shown, this solution proposes a high-efficiency spheroidizing molten iron ladle, including a suspension frame 1 and a molten iron bucket 2. The suspension frame 1 is arranged in a door frame shape to support the overall equipment. The molten iron bucket 2 has trunnions 3 symmetrically arranged on both sides. The trunnions 3 are connected to the lower end of the suspension frame 1 and are rotatably connected to the lower end of the suspension frame 1 to provide support for the tilting of the molten iron bucket 2. A water-retaining dam 4 is provided in the lower end of the molten iron bucket 2. An alloy pool 5 is provided in the lower end of the molten iron bucket 2 for placing spheroidizing agent, inoculant and covering agent. The alloy pool 5 is located on one side of the water-retaining dam 4. The cross-section of the water-retaining dam 4 is arranged in a right trapezoid. The inclined waist of the water-retaining dam 4 is connected to the alloy pool 5 to reduce the impact speed of molten iron flowing into the alloy pool 5 and prevent the alloying agent from being dispersed.

[0020] like Figure 3 and Figure 4 As shown, the top of the molten iron bucket 2 is open, and the open end of the molten iron bucket 2 is provided with a cover 6. The cover 6 is provided with a ladle opening 7. The ladle opening 7 is located directly above the alloy pool 5 for convenient and accurate material addition. A ladle 8 is provided above the ladle opening 7. One end of the ladle 8 is hinged to the cover 6. The hinged end of the ladle 8 is connected to the cover 6 by a stainless steel hinge. The buckle at the other end cooperates with the slot of the cover 6 to lock it in place. A graphite sealing gasket is provided on the contact surface. After material addition, the ladle 8 is closed to achieve a preliminary seal. The sealing gasket on the contact surface between the ladle 8 and the ladle opening 7 further improves the sealing effect.

[0021] like Figure 3 and Figure 4 As shown, the upper side of the molten iron bucket 2 is provided with an inlet / outlet 9, which is connected to the molten iron bucket 2. The upper end of the molten iron bucket 2 is provided with a guide dam 10, which is located above the side of the water-blocking dam 4 away from the alloy pool 5. The guide dam 10 is located on the side of the inlet / outlet 9. The upper end of the guide dam 10 and the edge of the inlet / outlet 9 form a funnel-shaped structure, which facilitates the rapid and stable flow of molten iron and reduces splashing of molten iron.

[0022] like Figure 1 and Figure 2As shown, a reducer 11 is provided on the outer side of the lower end of the suspension frame 1, and a tilting turntable 12 is rotatably provided on the outer side of the lower end of the suspension frame 1. The input and output ends of the reducer 11 are connected to the tilting turntable 12 and the trunnion 3, respectively. By rotating the tilting turntable 12, the speed is adjusted by the reducer 11 and the trunnion 3 is driven to rotate, so as to realize the stable tilting of the molten iron bucket 2, which is convenient for the casting of molten iron after spheroidizing treatment.

[0023] In practical use, the ladle cover 8 is opened, and the spheroidizing agent, inoculant, and covering agent are added to the alloy pool 5 through the ladle cover opening 7. After the material is added, the ladle cover 8 is closed and locked with the buckle and the slot to ensure that the ladle cover opening 7 is sealed. The molten iron ladle is hoisted to the molten iron tapping position, and the molten iron flows into the molten iron bucket 2 from the funnel-shaped inlet and outlet 9. The guide dam 10 guides the molten iron to flow smoothly and avoids impacting the alloy pool 5. When the height of the molten iron overflows the water-blocking dam 4, the molten iron slowly flows into the alloy pool 5, first melting the covering agent to form a protective layer, and then contacting the spheroidizing agent and inoculant to undergo a spheroidizing reaction. At this time, the ladle cover 8 is closed and the inlet and outlet 9 are sealed by the molten iron, forming a closed environment inside the ladle. After the spheroidizing reaction is completed, the tilting turntable 12 is rotated, and the speed is adjusted by the reducer 11, which drives the trunnion 3 and the molten iron bucket 2 to rotate slowly, and the spheroidized molten iron is poured from the inlet and outlet 9 into the casting mold to complete the casting.

[0024] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0025] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency spheroidizing molten iron ladle, characterized in that: The device includes a suspension frame and a molten iron bucket. The suspension frame is arranged in a door frame shape. The molten iron bucket has symmetrical trunnions on both sides. The trunnions are connected to the lower end of the suspension frame. A water-retaining dam is provided inside the lower end of the molten iron bucket. An alloy pool is provided inside the lower end of the molten iron bucket. The alloy pool is located on one side of the water-retaining dam. The cross-section of the water-retaining dam is arranged in a right-angled trapezoid. The sloping waist of the water-retaining dam is connected to the alloy pool.

2. The high-efficiency spheroidizing molten iron ladle according to claim 1, characterized in that: The top of the molten iron bucket is open, and the open end of the molten iron bucket is covered.

3. The high-efficiency spheroidizing molten iron ladle according to claim 2, characterized in that: The cover has a cap opening located directly above the alloy pool. A cap is located above the cap opening, and one end of the cap is hinged to the cover.

4. A high-efficiency spheroidizing ladle according to claim 1 or 2, characterized in that: The molten iron bucket has an inlet and outlet on its upper side, and the inlet and outlet are connected to the molten iron bucket.

5. The high-efficiency spheroidizing molten iron ladle according to claim 4, characterized in that: The upper end of the molten iron bucket is equipped with a guide dam, which is located above the side of the water-retaining dam away from the alloy pool.

6. The high-efficiency spheroidizing molten iron ladle according to claim 5, characterized in that: The guide dam is located on one side of the inlet and outlet, and the upper end of the guide dam and the edge of the inlet and outlet form a funnel-shaped structure.

7. The high-efficiency spheroidizing molten iron ladle according to claim 1, characterized in that: A speed reducer is provided on the outer side of the lower end of the suspension frame, and a tilting turntable is rotatably provided on the outer side of the lower end of the suspension frame. The input and output ends of the speed reducer are respectively connected to the tilting turntable and the trunnion.

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