Intermediate alloy tapping adding device
By designing the intermediate alloy steel output and addition device for the square tube body and rotating structure, the problem of uneven distribution of nanoparticles in the molten steel is solved, and the fixed point and uniform addition of the intermediate alloy is achieved, and the performance of the metal material is improved.
Patent Information
- Application Number
- CN202422385900.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-29
AI Technical Summary
In the prior art, nanoparticles are difficult to be evenly distributed in molten steel, resulting in poor performance enhancement effect of metal materials, and the existing intermediate alloy addition device is complex in structure, which is prone to clogging or unevenness.
An intermediate alloy steel-output and addition device is designed, adopting a square tube body, control rod, plate hook and handle structure, and the rotation and gravity effect are used to achieve fixed point and uniform addition of the intermediate alloy. Through the coordination of the plate hook and the fixed shaft and the delay structure of spring or arc-shaped protrusion, the concentrated drop of the intermediate alloy is avoided.
The uniform dispersion of the intermediate alloy is achieved, ensuring uniform distribution of nanoparticles in the molten steel, the device structure is simple and easy to operate, and avoiding blockage and uneven phenomena.
Smart Images
Figure CN223087851U_ABST
Abstract
Description
Technical Field
[0001] The utility model is applied to the field of metal smelting, and relates to a manufacturing process of nano-particle reinforced metal materials. Specifically, it is a device for uniformly adding an intermediate alloy of nano-particles into molten steel. Background Art
[0002] Nano-particles can be added to metal materials as a reinforcing phase to efficiently strengthen the mechanical properties of steel, which is an innovative method for strengthening metal materials at present. Due to the easy agglomeration of nano-particles, it is difficult to uniformly distribute them in molten steel, resulting in poor enhancement effect of the properties of metal materials. Therefore, an in-situ nano-particle aluminum-based intermediate alloy containing pre-dispersed nano-particles is used as a nano-particle carrier. The intermediate alloy is placed at the bottom of the ladle, and during the tapping of molten steel from the intermediate frequency furnace, the molten steel is used for flushing and dispersion, that is, the aluminum-based is melted at high temperature, and the nano-particles are uniformly dispersed under the stirring action of the molten steel. The production of the aluminum-based intermediate alloy includes steps such as uniform mixing, powder pressing, and vacuum high-temperature hot pressing. Uniform mixing is to mix nano-materials (usually TiC or TiC + TiB2) and aluminum powder in a ball mill; powder pressing is pressure forming in a cold liquid mold; vacuum high-temperature hot pressing is to semi-melt the aluminum powder in a vacuum furnace, apply high pressure while pressing, and then cool and form. Limited by the tooling and mold, the intermediate alloy is usually in the shape of a cylinder or a round cake.
[0003] The addition method of the intermediate alloy is similar to the inoculation treatment of molten iron. The main addition methods of molten iron inoculants are bottom addition in the ladle and in-stream addition. The best effect is in-stream inoculation, which is uniformly added to the molten iron. Searching for relevant patents on the inoculant addition device for in-stream inoculation of molten iron, there are nearly 50 or more, either installed at the ladle mouth, or set above the pouring cup, or used independently, and basically none are set above the nozzle of the intermediate frequency furnace. These in-stream inoculation addition devices include funnel type, vibration type, and screw feeding type. The vibration type and screw feeding type require power and have relatively complex structures. The funnel type uses gravity to automatically fall, and most use valves to control. Molten iron inoculants are mostly broken small pieces or granular, while the intermediate alloy is a regular cylinder with a diameter of Φ10mm - Φ20mm, which is not suitable for the above-mentioned funnel type. The leakage port is small and easy to block, and if the leakage port is large, the in-stream addition is not uniform. Content of the Utility Model
[0004] The technical problem solved by the utility model is to provide an intermediate alloy tapping addition device, which has a simple structure, can add the intermediate alloy to the molten steel flow at a fixed point during the tapping of molten steel from the intermediate frequency furnace, is convenient to operate, and the nano-particles are uniformly dispersed in the molten steel under the stirring action of the molten steel.
[0005] The technical solution adopted by the utility model is as follows: The intermediate alloy tapping addition device includes a square tube body, a control rod, a plate hook, and a handle. The square tube body is a tube body with openings at both ends composed of an upper plate, a bottom plate, side plates, and side turning plates; the front and rear ends of the control rod are provided with bends, the linear length between the two bends at both ends of the control rod corresponds to the length of the square tube body, the rear bend is fixedly matched with the rear end of the square tube body, and the front bend restricts the intermediate alloy in the square tube body; the middle of the control rod passes through the through hole of the guide block, and the guide block is fixed on the upper surface of the upper plate. The handle is fixed at the rear end of the square tube body and restricts the intermediate alloy in the square tube body. The plate hook is fixed at the front end of the lower surface of the bottom plate and is matched with the fixed shaft installed on the front side wall of the intermediate frequency furnace.
[0006] Furthermore, the side turning plate is rotationally connected to the bottom plate through a rotating shaft and is connected to the upper plate through a rotating card connecting piece; the rotating card connecting piece includes a sleeve, a rotating card, and a thin rod. The thin rod is fixed on the upper surface of the upper plate, the sleeve is fixed on the side turning plate, and the rotating card is a "zigzag" piece with double-way bending in space. One end of it is inserted into the sleeve and can rotate in the sleeve, and the other end is clamped and fixed with the thin rod by using the elastic deformation of the thin rod.
[0007] Furthermore, a middle plate is added in the square tube body to divide the square tube body into upper and lower layers. Intermediate alloys are placed in both layers to increase the addition amount or addition speed of the intermediate alloy with the flow.
[0008] Furthermore, the upper plate includes an upper rear plate and an upper front plate, and there is a through hole between them. By using this through hole, the intermediate alloy can be observed. A spring piece is fixedly installed on the lower surface of the upper front plate with rivets, and the movable end of the spring piece is pressed down with a screw to adjust the distance between it and the intermediate alloy, or an arc-shaped protrusion is provided at the front end of the upper surface of the bottom plate to delay the falling interval time of the intermediate alloy and avoid the concentrated falling of the intermediate alloy.
[0009] Furthermore, in order to realize the rapid sliding of the control rod and open the restraint on the intermediate alloy, a counterweight block is fixed on the control rod.
[0010] The beneficial effects of the utility model are as follows: The structure of the utility model is simple, and all movable parts adopt a rotating structure. The operation of adding the intermediate alloy with the flow is convenient. The cooperation between the plate hook and the fixed shaft realizes the fixed-point falling of the intermediate alloy. The delay structure of the spring piece or the arc-shaped protrusion can avoid the concentrated addition of the intermediate alloy and is beneficial to the uniform dispersion of nano-particles in the molten steel. Description of the Drawings
[0011] Figure 1 It is the front view schematic diagram of Embodiment 1 and also Figure 2 the B-B cross-sectional view schematic diagram of
[0012] Figure 2 It is Figure 1 the top view schematic diagram of
[0013] Figure 3 is Figure 1 the schematic A-A sectional view;
[0014] Figure 4 is the schematic view of the master alloy placement;
[0015] Figure 5 is the schematic view of the in-stream addition of the master alloy;
[0016] Figure 6 is the partial front view schematic of Example 2;
[0017] Figure 7 is the partial front view schematic of Example 3;
[0018] In the figure: 1 - upper rear plate, 2 - side turning plate, 3 - master alloy, 4 - control rod, 5 - rivet, 6 - thin rod, 7 - screw, 8 - spring piece, 9 - upper front plate, 10 - plate hook, 11 - bottom plate, 12 - handle, 13 - guide block, 14 - side plate, 15 - arc-shaped protrusion, 16 - middle plate, 17 - bolt;
[0019] 21 - rotating shaft, 22 - sleeve, 23 - rotating clamping part;
[0020] 31 - fixed shaft, 32 - rotating tube. Specific implementation mode
[0021] The following "front and back" refers to the right and left sides of the attached Figure 1 , the front is the discharging end of the master alloy, and the back is the handle end. The following "up and down" is the up and down relative position of the attached Figure 1 , and is also the up and down relative position during use. Example 1
[0022] The structure of the master alloy tapping and adding device in this example is shown in the attached Figures 1-3 , and includes a square tube body, a control rod 4, a plate hook 10, a handle 12, etc. The square tube body has openings at both ends and includes an upper plate, a bottom plate 11, side plates 14, and side turning plates 2. The upper plate includes an upper rear plate 1 and an upper front plate 9, and there is a through hole between them to facilitate observing the master alloy inside the square tube body. The upper rear plate 1, the upper front plate 9, the bottom plate 11, and the side plates 14 are fixedly connected into an integral structure.
[0023] The handle 12 is welded and fixed to the rear end of the square tube body, and the plate hook 10 is welded and fixed to the front end of the lower surface of the bottom plate 11 and cooperates with the fixed shaft 31. When the handle 12 is operated to lift the rear end of the square tube body, the plate hook 10 can be positioned and rotated around the fixed shaft 31 to realize the positioning inclination of the square tube body. The cylindrical master alloy inside the square tube body can roll down from the front end of the square tube body under the action of gravity. The cooperation between the plate hook 10 and the fixed shaft 31 enables the master alloy to achieve fixed-point falling even when the inclination angle of the square tube body changes.
[0024] On the upper surfaces of the upper rear plate 1 and the upper front plate 9, guide blocks 13 are fixed. The control rod 4 passes through the through holes of the guide blocks 13. Both ends of the control rod 4 are bent. The rear end is bent to hook and fix the rear end of the square tube body, and the front end is bent to block the leakage of the intermediate alloy. The straight-line length between the two bends of the control rod 4 corresponds to the length of the square tube body.
[0025] The side turning plate 2 and the bottom plate 11 are rotationally connected through a rotating shaft 21, as shown in the attached Figure 3 figure. It is connected to the upper plate through a rotating card connecting piece. One rotating card connecting piece is provided on each of the upper rear plate 1 and the upper front plate 9. The rotating card connecting piece includes a sleeve 22, a rotating card 23 and a thin rod 6. The thin rod 6 is welded and fixed on the upper surface of the upper plate. The sleeve 22 is welded and fixed on the side turning plate 2. The rotating card 23 is a "zigzag" piece with a three-dimensional double bend, as shown in the attached Figure 2 and the attached Figure 3 figure. One end of the rotating card 23 is inserted into the sleeve 22 and can rotate within the sleeve 22. After the other end rotates, it uses the elastic deformation of the thin rod 6 to clamp and fix the thin rod. When the intermediate alloy needs to be placed in the square tube body, the square tube body is flipped and the side plate is placed on the ground, as shown in the attached Figure 4 figure. Unscrew the rotating card connecting piece, turn over the side turning plate 2, and open the square tube body. After the intermediate alloy is placed, close the side turning plate 2, and rotate the rotating card 23 to clamp the thin rod 6.
[0026] To achieve a delay in the rolling of the intermediate alloy, avoid the concentrated addition of the intermediate alloy, and ensure the uniformity of the in-stream addition, a spring piece 8 is fixedly installed on the lower surface of the upper front plate 9 with a rivet 5, as shown in the attached Figure 1 figure. The spring piece 8 is pressed down with a screw 7 to adjust the distance between its movable end and the intermediate alloy, so as to neither block the stationary intermediate alloy nor play a role in hindering and delaying.
[0027] When this embodiment is in use, after the intermediate alloy is added to the square tube body and the thin rod is clamped, place the square tube body on the rotating tube 32 and push the square tube body forward. When the plate touches the fixed shaft 31, the front outlet of the square tube body is located above the nozzle of the intermediate frequency furnace. The rotating tube 32 and the fixed shaft 31 are fixed on the front side wall of the intermediate frequency furnace. When the intermediate frequency furnace is lifted and tilted to pour out molten steel, the furnace platform of the intermediate frequency furnace also tilts. Therefore, the rotating tube 32 and the fixed shaft 31 should not be arranged on the furnace platform, and arranging them on the front side wall of the furnace does not affect the melting and steel pouring operations of the intermediate frequency furnace. While the intermediate frequency furnace is tilting to pour out molten steel, the operator stands on the operating platform, holds the handle, and lifts the rear end of the square tube body. The plate hook cooperates with the fixed shaft, and the square tube body tilts, as shown in the attached Figure 5As shown in the figure. When molten steel flows out of the nozzle, the thumb holding the handle lifts the rear end of the control rod. The control rod rotates, and the rear end bend disengages from the restraint. Under the action of gravity, the control rod slides down along the through hole direction of the guide block. The bend at the front end of the control rod no longer restrains the intermediate alloy. The intermediate alloy falls into the molten steel stream under the action of gravity and enters the ladle along with the molten steel. The intermediate alloy should be added entirely when about half of the molten steel has been tapped. Then, the subsequent tapped molten steel stirs the molten steel in the ladle, so that after the intermediate alloy is dispersed, the nano-particles can be evenly distributed in the molten steel.
[0028] It should be noted that: 1) The structure of the tipping plate and the rotating card connecting piece is only to facilitate the placement of the intermediate alloy in the square tube body. If the tipping plate, the upper plate, and the bottom plate are fixed together, the intermediate alloy can be added through the through hole between the upper rear plate and the upper front plate, or through the opening at the front end, but it is more troublesome and less efficient. 2) When the tipping plate is set, the upper rear plate and the upper front plate can be combined into an upper plate without leaving a through hole, which does not affect the use of this embodiment. 3) The cooperation between the plate hook and the fixed shaft is to achieve the fixed-point dropping of the intermediate alloy. Therefore, it should be close to the nozzle of the intermediate frequency furnace, that is, close to the front end of the square tube body. 4) The spring piece is only to delay the interval time of the intermediate alloy dropping and avoid concentrated addition. If the inclination angle is manually controlled, the spring piece can also be not used. 5) With the bend at the front end of the control rod blocking the front end of the square tube body and the handle blocking the rear end, after the intermediate alloy is added to the square tube body, it will not leak out of the square tube body under the restraint of both ends, realizing safe operation. 6) The purpose of using the rotating tube is to reduce the friction of the front leg square tube body. If a similar fixed shaft method is used, the stable placement of the square tube body can also be achieved. 7) When the square tube body is tilted, in order to accelerate the sliding speed of the control rod, a fixed counterweight can be welded on the control rod. Embodiment 2
[0029] This embodiment is an improvement based on Embodiment 1. As shown in the attached Figure 6 figure. The spring piece is removed, and an arc-shaped protrusion 15 is added at the front end of the upper surface of the bottom plate 11. When the intermediate alloy in the square tube body tilts and drops, the intermediate alloy changes its rolling direction due to the arc-shaped protrusion 15 and has a tendency to jump upward. After colliding with the bend at the front end of the control rod, it drops, which also plays an indirect role in delaying the dropping of the intermediate alloy and can also avoid the concentrated dropping of the intermediate alloy. Embodiment 3
[0030] This embodiment is an improvement based on the above embodiments. As shown in the attached Figure 7 figure. When the height of the intermediate alloy cylinder is small and a large amount needs to be added to the molten steel, a middle plate 16 is added in the square tube body, dividing the square tube body into upper and lower layers. The bend at the front end of the control rod 4 is still used to restrain the intermediate alloy, but the lower-layer intermediate alloy can only be put in by opening the tipping plate 2.
[0031] At the front ends of the upper and lower layers, the falling of the intermediate alloy is delayed by using spring pieces 8 and arc-shaped protrusions 15 respectively. A spring piece 8 is provided in the lower layer. Since it is difficult to adjust the screw 7, it is advisable to provide an arc-shaped protrusion 15. In the upper layer, the screw adjustment is convenient, and the spring piece method can be adopted.
[0032] The usage methods of Example 2 and Example 3 are the same as that of Example 1.
[0033] The structure of the utility model is simple. Almost all moving parts adopt a rotating structure, such as the inclination of the square tube body, the connection method of the control rod for restraining and releasing the intermediate alloy, the side turning plate and the rotating card connecting piece, etc. The operation of adding the intermediate alloy along with the flow is convenient. After lifting the square tube body by the handle, the control rod can be unscrewed with the thumb. The delay structure of the spring piece or the arc-shaped protrusion can avoid the concentrated addition of the intermediate alloy, which is beneficial to the uniform dispersion of the nano-particles in the molten steel. The plate hook cooperates with the fixed shaft fixed on the front side wall of the intermediate frequency furnace to realize the fixed-point falling of the intermediate alloy into the molten steel flow at the furnace nozzle.
Claims
1. An addition device for adding master alloy during tapping, characterized in that: It includes a square tube body, a control rod (4), a plate hook (10), and a handle (12); the square tube body is a tube body with openings at both ends composed of an upper plate, a bottom plate (11), side plates (14), and side turning plates (2); the front and rear ends of the control rod (4) are provided with bends, the straight-line length between the two bends at the two ends of the control rod (4) corresponds to the length of the square tube body, the rear bend is fixedly matched with the rear end of the square tube body, and the front bend restricts the intermediate alloy in the square tube body. The middle part of the control rod (4) passes through the through hole of the guide block (13), and the guide block (13) is fixed on the upper surface of the upper plate; the handle (12) is fixed at the rear end of the square tube body and restricts the intermediate alloy in the square tube body; the plate hook (10) is fixed on the front end of the lower surface of the bottom plate (11) and is matched with the fixed shaft (31) installed on the front side wall of the intermediate frequency furnace.
2. The addition device for master alloy during tapping according to claim 1, characterized in that: The side turning plate (2) is rotatably connected to the bottom plate (11) through a rotating shaft (21) and is connected to the upper plate through a rotating card connecting piece; the rotating card connecting piece includes a sleeve (22), a rotating card (23), and a thin rod (6). The thin rod (6) is fixed on the upper surface of the upper plate, the sleeve (22) is fixed on the side turning plate (2), and the rotating card (23) is a "Z"-shaped piece with two-way bending in space. One end of it is inserted into the sleeve (22) and can rotate in the sleeve (22), and the other end is fixedly clamped with the thin rod (6).
3. The addition device for ferroalloy tapping according to claim 2, characterized in that: A middle plate (16) is added in the square tube body to divide the square tube body into upper and lower layers.
4. An intermediate alloy tapping addition device according to claim 1 or 3, characterized in that: The upper plate includes an upper rear plate (1) and an upper front plate (9), and there is a through hole between them.
5. The addition device for ferroalloy tapping according to claim 4, wherein: The lower surface of the upper front plate (9) is fixedly installed with a spring piece (8) by a rivet (5), and the spring piece (8) is pressed down by a screw (7) to adjust the distance between its movable end and the intermediate alloy.
6. The intermediate alloy tapping addition device according to claim 4, characterized in that: An arc-shaped protrusion (15) is provided at the front end of the upper surface of the bottom plate (11).
7. The addition device for ferroalloy tapping according to claim 1, characterized in that: A counterweight is fixed on the control rod (4).