Vacuum furnace power-off emergency casting device and method thereof
Through the vacuum furnace power-off emergency casting device, the steel wire rope and pulley combination is used to solve the problem of steel water leakage caused by power-off of the medium-frequency furnace, and the emergency risk avoidance of small and medium-sized medium-frequency steelmaking furnaces is achieved, and maintenance costs are reduced.
Patent Information
- Application Number
- CN202510673999.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2025-08-01
AI Technical Summary
Sudden power outage of the intermediate frequency furnace during smelting will cause damage to the molten steel and surrounding equipment. The existing emergency hedging facilities occupy a large site and are poor in economicality, making it difficult to be suitable for small and medium-sized medium-frequency steelmaking furnaces.
A vacuum furnace power-off emergency casting device is designed, including ladle, plug block, ingot die, pulley set, wire rope and pulley ring. Through the cooperation of the wire rope and pulley set, pulley ring is pulled during power off to remove the plug block and realize emergency casting of the steel.
It realizes emergency casting in a power-off state, with a simple structure, maintenance-free, wide application range, low maintenance cost, and no dependence on electric or hydraulic assistance.
Smart Images
Figure CN120394838A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to a vacuum furnace power-off emergency casting device and method, belonging to the technical field of emergency risk avoidance in the steelmaking field of the metallurgical industry. Background Art
[0002] Medium-frequency furnaces are currently the most widely used steelmaking equipment. They use the change of medium-frequency current to generate eddy currents inside raw materials, heating molten iron to above 1400°C, and then adding various alloys to smelt special steel grades. Since it is a smelting process relying on electric energy, it has high requirements for the stability of power supply. Especially during the smelting process, sudden power outages are not allowed. If there is a sudden power outage, the molten steel above 1400°C during smelting and the surrounding furnace lining, coils, protective covers, etc. will lose the cooling of circulating water and eventually be damaged or melted under the baking of the molten steel, and serious smelting accidents such as molten steel leakage may also occur.
[0003] During the smelting process, in response to inevitable power outage accidents, corresponding emergency risk avoidance facilities are designed. Such as installing a diesel generator for temporary power supply; using a storage battery for temporary power supply and other temporary measures to ensure emergency casting and avoid causing greater losses. However, the above measures require a large site and daily maintenance. Therefore, for small and medium-sized medium-frequency steelmaking furnaces, the economy is poor. Summary of the Invention
[0004] The purpose of the present invention is to provide a vacuum furnace power-off emergency casting device and method, which can achieve emergency casting in a power-off state and does not occupy a large site, solving the problems existing in the background art.
[0005] The technical solution of the present invention is as follows: A vacuum furnace power-off emergency casting device includes a ladle, a stopper, an ingot mold, a pulley block, a steel wire rope and a pull ring. The stopper is installed at the bottom of the ladle, and the ingot mold is fixed on the steel structure supporting the ladle. The ingot mold is located directly below the ladle; one end of the steel wire rope is embedded inside the stopper, and the other end bypasses the pulley block, passes through the furnace door and is fixed to the pull ring, and the pull ring is installed outside the furnace door.
[0006] The pulley block includes pulley A and pulley B. Pulley A is installed at the bottom of the ingot mold, and pulley B is installed at the top of the ingot mold near the furnace door.
[0007] Pulley A is located directly below the stopper.
[0008] The steel wire rope passes through the furnace door and is sealed with vacuum sealing mud.
[0009] The stopper is in a conical shape with a smaller upper part and a larger lower part.
[0010] The ingot mold is in the shape of a water pool, with a steel plate on the outside and a high-temperature resistant material on the inside.
[0011] A method for emergency casting when a vacuum furnace loses power, using an emergency casting device for a vacuum furnace as defined above. When an emergency power failure occurs, the pull ring is pulled, and the steel wire rope pulls the plug block out from the bottom of the ingot mold, and the molten steel flows out through the plug block opening into the ingot mold to achieve emergency casting.
[0012] The beneficial effects of the present invention are as follows: The present invention removes the plug block through the cooperation of the steel wire rope and the pulley block to achieve emergency casting in the event of an accident. The structure is simple, requires no daily maintenance, does not rely on the assistance of electric power or hydraulic pressure, greatly expands the scope of application, and has low maintenance costs. Description of the Drawings
[0013] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is an installation structural schematic diagram of the present invention; Figure 3 It is a structural schematic diagram of the furnace door installation; Figure 4 It is a structural schematic diagram of the pulley block; Figure 5 It is the front view of the ingot mold; Figure 6 It is the top view of the ingot mold; In the figure: ladle 1, plug block 2, ingot mold 3, pulley block 4, roller 5, steel wire rope 6, pull ring 7, furnace body 8, hydraulic cylinder 9, furnace door 10, steel structure 11, vacuum sealing mud 12, pin shaft 13, bracket 14, sheath 15, steel plate 16, medium-sized high-temperature resistant material 17. Detailed Embodiments
[0014] The following further illustrates the present invention through examples in conjunction with the drawings.
[0015] Referring to the attached Figure 1-6 , an emergency casting device for a vacuum furnace includes a ladle 1, a plug block 2, an ingot mold 3, a pulley block 4, a steel wire rope 6, and a pull ring 7. The plug block 2 is installed at the bottom of the ladle 1, the ingot mold 3 is fixed on the steel structure 11 that supports the ladle 1, and the ingot mold 3 is directly below the ladle 1; one end of the steel wire rope 6 is embedded inside the plug block 2, the other end bypasses the pulley block 4, passes through the furnace door 10 and is fixed to the pull ring 7, and the pull ring 7 is installed outside the furnace door 10.
[0016] In this embodiment, referring to the attached Figure 1-6The stopper 2 is a cone with a smaller upper part and a larger lower part. It is installed at the lower part of the ladle 1 and penetrates into the interior of the ladle 1; the ingot mold 3 is in the shape of a pool, with a steel plate 16 on the outside and a medium-sized high-temperature resistant material 17 on the inside. It is fixed to the steel structure 11 supporting the ladle 1 by bolts and is located directly below the ladle 1; one end of the steel wire rope 6 is embedded in the inside of the stopper 2, and the other end passes around the pulley A4.1 and the pulley B4.2, passes through the furnace door 10, and is fixed to the pull ring 7. The pull ring 7 is installed on the outside of the furnace door 10, the pulley A4.1 is installed at the bottom of the ingot mold 3, and below the stopper 2, and the pulley B4.2 is installed on the top of the ingot mold 3 close to the furnace door.
[0017] Figure 1 、 2 3 shows that the steel wire rope 6 passes through the furnace door 10 and is sealed with vacuum sealing mud 12, which can not only achieve the sealing effect but also use sealing materials that can be easily destroyed by external forces.
[0018] Figure 1 、 4 It is shown that the pulley group 4 includes pulley A4.1 and pulley B4.2. Pulley A4.1 and pulley B4.2 are both composed of roller 5, pin 13, bracket 14, and sheath 15, among which the bracket 14 is the main frame structure, the roller 5 is installed on the pin 13, the pin 13 passes through the bracket 14, and the roller 5 is installed on the bracket 14; the sheath 15 is installed on the bracket 14 and is located on the outside of the roller 5 to prevent the wire rope 6 from falling off from the groove of the roller 5.
[0019] The specific usage is as follows: When an emergency power outage occurs and steel must be poured to avoid danger, it is only necessary to pull the pull ring 7 out of the furnace door 10, pull the wire rope 6 outward by manpower, forklift or other power, pull the plug 2 out through the wire rope 6, and the molten steel flows out of the plug mouth into the ingot mold 3 to achieve emergency casting.
[0020] An embodiment of the present invention in a 500Kg vacuum test furnace is as follows: Block 2: upper diameter 80mm, lower diameter 100mm, height 80mm; Ingot mold 3: length 1600mm, width 1000mm, height 400mm; Steel wire rope 6: diameter 6mm; Pull ring 7: length 100mm, width 800, diameter 8mm; Roller 5: diameter 80mm, thickness 20mm Pin 13: diameter 20mm, length 50mm; Bracket 14: length 100mm, width 40mm; Sheath 15: length 70mm, width 15mm; Vacuum sealing clay 12: No. 80 vacuum clay.
Claims
1. An emergency casting device for power failure of a vacuum furnace, characterized in that: The invention comprises a steel ladle (1), a plug (2), an ingot mold (3), a pulley block (4), a steel wire rope (6) and a pull ring (7), wherein the plug (2) is mounted on the bottom of the steel ladle (1), the ingot mold (3) is fixed on a steel structure (11) supporting the steel ladle (1), and the ingot mold (3) is located directly below the steel ladle (1); one end of the steel wire rope (6) is embedded in the plug (2), and the other end passes around the pulley block (4), passes through the furnace door (10) and is fixed to the pull ring (7), and the pull ring (7) is mounted on the outside of the furnace door (10).
2. The emergency casting device for power failure of a vacuum furnace according to claim 1, characterized in that: The pulley assembly (4) comprises a pulley A (4.1) and a pulley B (4.2), wherein the pulley A (4.1) is mounted on the bottom of the ingot mold (3), and the pulley B (4.2) is mounted on the top of the ingot mold (3) on a side close to the furnace door (10).
3. The emergency casting device for power failure of a vacuum furnace according to claim 2, wherein: The pulley A (4.1) is located directly below the block (2).
4. A vacuum furnace power-off emergency casting device according to claim 1 or 2, characterized in that: The steel wire rope (6) passes through the furnace door (10) and is sealed by vacuum sealing mud (12).
5. The emergency casting device for power failure of a vacuum furnace according to claim 1, wherein: The plug (2) is in the shape of a cone with a smaller upper portion and a larger lower portion.
6. The emergency casting device for power failure of a vacuum furnace according to claim 1, wherein: The ingot mold (3) is in the shape of a pool, with an outer portion made of a steel plate (16) and an inner portion made of a high-temperature resistant material (17).
7. An emergency casting method for power failure of a vacuum furnace, characterized in that: A vacuum furnace power failure emergency casting device as defined in claims 1 to 6 is used. When an emergency power failure occurs, the pull ring (7) is pulled, and the steel wire rope (6) pulls the plug (2) out from the bottom of the ingot mold (3). The molten steel flows out of the plug opening into the ingot mold (3), thereby realizing emergency casting.