Novel dummy bar head of continuous casting machine

Abstract

The utility model provides a novel continuous casting machine dummy bar head which comprises a dummy bar head part and a dummy bar hook, a U-shaped through groove is formed in one end of the dummy bar head part, shaft holes are formed in the two sides of the dummy bar head part respectively, and a shaft pin capable of being connected with a dummy bar is arranged in each shaft hole. A small U-shaped groove and a large U-shaped groove which are arranged in a step shape are formed in the end, away from the dummy bar, of the dummy bar head, a pin hole transversely penetrating through the small U-shaped groove is formed in the dummy bar head, and the dummy bar hook comprises a hook body and a limiting rod perpendicularly connected with the end of the vertical section of the hook body. The limiting rod is located in the large U-shaped groove, the two ends of the limiting rod are attached to the two side walls of the large U-shaped groove respectively, the vertical section of the hook body is attached to the closed end of the small U-shaped groove, a plug pin is arranged in the pin hole, and the upper side of the plug pin is attached to the vertical section of the hook body. According to the dummy bar head, a steel billet can be tightly combined with the dummy bar head, and production accidents caused by casting failure due to disengagement are avoided.

Description

Technical Field

[0001] This utility model belongs to the field of continuous casting machines, and specifically relates to a novel continuous casting machine dummy head. Background Technology

[0002] In the continuous casting process, the initial casting is a crucial step. The procedure involves using a straightener to power a dummy bar (with a dummy bar head) that conforms to the casting machine's curvature and feeds it into the crystallizer. Once the bar has entered the crystallizer by 200-300mm, feeding is stopped. Asbestos rope (or cloth) is then used to tightly seal the dummy bar (to prevent molten steel from leaking into the gaps and causing blockages after casting begins). A suitable amount of scrap steel and cooled steel are then placed before casting begins in the tundish. After casting begins in the tundish, molten steel is injected into the crystallizer through the tundish nozzle. The cooled steel rapidly solidifies and embeds itself into the dummy bar head, which has a corresponding design structure. At this point, the vibration device and straightening machine are activated. Under the action of vibration, the solidified steel billet shell is demolded from the mold. The straightening machine provides reverse power to continuously pull out the dummy bar and the connected solidified billet at a certain pulling speed, achieving continuous casting. When the billet and the connected dummy bar reach the tail of the straightening machine, the straightening machine uses its pressing force to disconnect the billet from the dummy bar (i.e., billet removal), and normal continuous casting billet production begins. Therefore, the connection form between the dummy bar and the continuous casting billet is crucial to the smoothness of continuous casting start-up and billet removal, and thus to the smooth operation of continuous casting production. Figure 1 The middle section shows the existing ingot-drawing head structure, which has the following problems: The flow and temperature of molten steel entering the crystallizer have a significant impact on the density of solidified molten steel in the groove. The strength of the inlaid part (affected by temperature) makes it difficult to control the starting time of the casting process. If the starting time is too early, the solidified molten steel in the groove will have low strength and be prone to deformation, which will lead to separation and cause casting failure (commonly known as pull-out) and subsequent difficult handling. This is a serious accident in continuous casting. Utility Model Content

[0003] This utility model provides a novel dummy ingot head for continuous casting machines, which enables the steel billet to be tightly bonded to the dummy ingot head, preventing separation and subsequent casting failure, thus avoiding production accidents. The specific solution is as follows:

[0004] A novel continuous casting machine dummy head includes a dummy head and a dummy hook. The dummy head has a U-shaped groove at one end and shaft holes on both sides. A shaft pin, connectable to a dummy rod, is located within the shaft holes. The end of the dummy head facing away from the dummy rod has a small U-shaped groove and a large U-shaped groove arranged in a stepped pattern. A pin hole is provided in the dummy head, passing through the small U-shaped groove. The dummy hook includes a hook body and a limiting rod perpendicularly connected to the end of the upright section of the hook body. The limiting rod is located within the large U-shaped groove, and its two ends are respectively abutted against the side walls of the large U-shaped groove. The upright section of the hook body is abutted against the closed end of the small U-shaped groove. A pin is provided within the pin hole, and the upper side of the pin is abutted against the upright section of the hook body.

[0005] The upright section of the hook body is provided with reinforcing ribs along its length on the side away from the curved hook.

[0006] Furthermore, the upright section of the hook body is vertically provided with a baffle that can fit against the free end of the ingot head.

[0007] Furthermore, the baffle is made of 6mm thick steel plate, and the auger hook is made of 32mm diameter threaded steel.

[0008] Furthermore, the hook body has its hook side facing the small U-shaped groove and is positioned downwards.

[0009] The beneficial effects of this utility model are:

[0010] This invention discloses a novel continuous casting machine dummy head. By setting a dummy head hook and reinforcing ribs on the dummy head, it effectively ensures a tight bond between the billet and the dummy head hook and reinforcing ribs when molten steel enters the crystallizer and solidifies. This ensures the strength of the bond and facilitates smooth billet removal, thereby maintaining production continuity. It also reduces the difficulty of manual operation and significantly improves the success rate of casting. Furthermore, the billet removal method reduces the influence of molten steel temperature on solidification bonding strength, enabling a one-time start-up (without interruption or waiting), improving efficiency and reducing molten steel loss. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the ingot head structure in the prior art.

[0012] Figure 2 This is a top view of the assembly of this utility model.

[0013] Figure 3 This is a bottom view of the assembly of this utility model.

[0014] Figure 4 This is a front view of the assembly of this utility model.

[0015] Figure 5 This is a side view of the ingot hook of this utility model.

[0016] Figure 6 This is a top view of the ingot hook of this utility model.

[0017] Explanation of reference numerals in the attached drawings: 1. Ingot head; 2. Ingot hook; 21. Hook body; 22. Limiting rod; 3. U-shaped through groove; 4. Shaft hole; 5. Ingot rod; 6. Small U-shaped groove; 7. Pin; 8. Baffle; 9. Reinforcing rib. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] See Figure 1-6 A novel continuous casting machine dummy head includes a dummy head 1 and a dummy hook 2. The dummy head 1 has a U-shaped through groove 3 at one end and shaft holes 4 on both sides. A shaft pin is provided in the shaft hole 4 to connect with the dummy rod 5. The dummy head 1 has a small U-shaped groove 6 and a large U-shaped groove arranged in a stepped manner at the end away from the dummy rod 5. The opening side of the U-shaped groove is located on the lower side of the dummy head 1. The dummy head 1 has a pin hole that passes through the small U-shaped groove 6. The diameter of the pin hole is 6mm. The dummy hook 2 includes a hook body 21 and a limiting rod 22 that is vertically connected to the end of the upright section of the hook body 21. The hook body 21 has an L-shaped structure. The limiting rod 22 is located in the large U-shaped groove and its two ends are respectively attached to the side walls of the large U-shaped groove. The upright section of the hook body 21 is attached to the closed end of the small U-shaped groove 6. A pin 7 is provided in the pin hole. The upper side of the pin 7 is attached to the upright section of the hook body 21.

[0020] The upright section of the hook body 21 is provided with reinforcing ribs 9 along its length away from the hook side. The design of the reinforcing ribs 9 can enhance the strength of the ingot hook 2 and further enhance the tightness between the ingot hook 2 and the steel billet, thereby ensuring the embedding strength.

[0021] The preferred hook body 21 has a vertical baffle 8 on its upright section that can fit against the free end of the ingot head 1. The baffle is designed to provide protection and prevent molten steel from flowing into the U-shaped channel and affecting subsequent ingot removal.

[0022] The preferred baffle 8 is made of a 6mm thick steel plate, and the traction hook 2 is made of 32mm diameter threaded steel.

[0023] The hook body 21 preferably has its hook side facing the small U-shaped groove 6 and is positioned downwards.

[0024] The installation method of the ingot guide head of this utility model is as follows: First, the ingot guide head 1 is fixed to the end of the ingot guide rod 5 by inserting a shaft pin through the shaft hole 4. Then, the ingot guide hook 2 at one end of the limiting rod 22 is pushed into the large U-shaped groove of the ingot guide head 1, so that the upper side of the upright section of the hook body 21 is in contact with the closed end of the small U-shaped groove 6. At this time, the baffle 8 is in contact with the end of the ingot guide head 1 to form a seal. The hook body 21 is facing down. Then, a 6mm diameter pin 7 is inserted into the pin hole. The upper side of the pin 7 is in contact with the lower side of the upright section of the hook body 21 of the ingot guide hook 2 to prevent the ingot guide hook 2 from separating from the ingot guide head 1 before the ingot is removed.

[0025] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel continuous casting machine dummy head, characterized in that: The device includes a spool head (1) and a spool hook (2). The spool head (1) has a U-shaped through groove (3) at one end and shaft holes (4) on both sides. A shaft pin is provided in the shaft hole (4) to connect with the spool rod (5). The spool head (1) has a small U-shaped groove (6) and a large U-shaped groove arranged in a stepped manner at the end away from the spool rod (5). The spool head (1) has a pin hole that passes through the small U-shaped groove (6). The spool hook (2) includes a hook body (21) and a limiting rod (22) that is vertically connected to the end of the upright section of the hook body (21). The limiting rod (22) is located in the large U-shaped groove and its two ends are respectively attached to the two side walls of the large U-shaped groove. The upright section of the hook body (21) is attached to the closed end of the small U-shaped groove (6). A pin (7) is provided in the pin hole. The upper side of the pin (7) is attached to the upright section of the hook body (21). The upright section of the hook (21) is provided with reinforcing ribs (9) along its length direction away from the side of the hook.

2. The novel continuous casting machine dummy head according to claim 1, characterized in that: The hook body (21) has a baffle (8) vertically mounted on its upright section, which can fit against the free end of the ingot head (1).

3. A novel continuous casting machine dummy head according to claim 2, characterized in that: The baffle (8) is made of steel plate with a thickness of 6mm, and the auger hook (2) is made of threaded steel with a diameter of 32mm.

4. A novel continuous casting machine dummy head according to claim 1, characterized in that: The hook body (21) is positioned with its hook side facing the small U-shaped groove (6) and downward.

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