Blank guide head for reducing fluctuation of liquid level of crystallizer

Abstract

The utility model relates to the field of continuous casting equipment, in particular to a blank guide head capable of reducing crystallizer liquid level fluctuation, which comprises a blank guide head body, an oblique angle arranged on the middle lower portion of the end portion of the blank guide head body, a groove arranged on the lower portion of the blank guide head body close to the end portion, and a long groove arranged on the end portion of the blank guide head body and extending to the groove. A pin hole is formed in the side face of the long groove, a positioning pin is inserted into the pin hole, an L-shaped disposable pull rod is inserted into the long groove, a transverse rod is arranged at the end of the disposable pull rod, and the disposable pull rod is arranged above the positioning pin in a pressing mode. The oblique angle is arranged at the middle lower part of the end part of the blank guiding head, so that a certain distance exists between the blank guiding head and a connecting gap of a small round blank in the vertical direction, two pulling-straightening rollers are prevented from being contacted with the gap at the same time, the displacement of the pulling-straightening rollers is prevented from being generated at the same time, the influence on the fluctuation of the liquid level of a crystallizer is reduced, and slag entrapment is avoided; the cleanliness of molten steel is improved, and the surface quality of casting blanks is improved.

Description

Technical Field

[0001] This utility model relates to the field of continuous casting equipment, and in particular to a billet head that reduces crystallizer fluctuations. Background Technology

[0002] After the continuous casting machine is started, a billet traction device is needed to guide the steel billet from the crystallizer outlet to the drawing machine. According to the specifications of the drawing machine, the steel billet is pressed into steel billets of different sizes. The billet traction device includes a billet traction head, which is inserted into the crystallizer using a disposable pull rod. The pull rod contacts and merges with the molten steel. The billet traction device then pulls the steel billet out and introduces it into the drawing machine. The gap between the billet traction head and the steel billet contact surface, along with the upper and lower straightening rollers of the drawing machine, can easily generate significant vibrations. These vibrations are transmitted through the steel billet to the crystallizer, causing fluctuations in the molten steel surface and affecting the quality of the molten steel. Therefore, it is particularly necessary to develop a billet traction head that reduces fluctuations in the molten steel surface of the crystallizer. Summary of the Invention

[0003] The purpose of this invention is to provide a billet head that reduces fluctuations in the liquid level of the crystallizer, which has the advantage of reducing fluctuations in the liquid level of the crystallizer.

[0004] The technical solution adopted is as follows:

[0005] A blanking head for reducing liquid level fluctuations in a crystallizer includes a blanking head body, an angled section at the lower middle part of the end of the blanking head body, a groove at the lower part near the end of the blanking head body, an elongated groove extending to the groove at the end of the blanking head body, a pin hole on the side of the elongated groove, a limiting pin inserted into the pin hole, an L-shaped disposable pull rod inserted into the elongated groove, and a limiting hole corresponding to the limiting pin on the disposable pull rod.

[0006] Preferably, the groove is removably filled with asbestos cloth.

[0007] Preferably, the disposable pull rod is wound with asbestos rope, and the asbestos rope is connected to the blank-drawing head body.

[0008] End contact.

[0009] Preferably, the oblique angle is 45 degrees.

[0010] Preferably, the disposable tie rod is made of threaded steel.

[0011] Compared to existing technologies, the advantages are:

[0012] 1. The lower middle part of the end of the blank-drawing head of this utility model is provided with an angle, so that the gap connecting the blank-drawing head and the small round billet has a certain distance in the vertical direction. The two gaps contact the upper and lower straightening rollers at different times, avoiding the two straightening rollers from contacting the gaps at the same time, avoiding the simultaneous generation of vibration, reducing the fluctuation of the liquid surface of the crystallizer, and improving the quality of the small round billet.

[0013] 2. In this utility model, asbestos cloth and asbestos rope reduce the adhesion of steel billets to the billet head. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a preform head that reduces liquid surface fluctuations in a crystallizer, according to this utility model.

[0015] Figure 2 This is a front view schematic diagram of the billet head for reducing liquid level fluctuations in a crystallizer according to this utility model.

[0016] Figure 3 is a top view schematic diagram of the disposable tie rod of the blank-drawing head for reducing liquid level fluctuations in the crystallizer according to this utility model.

[0017] Figure 4 is a three-dimensional structural schematic diagram of a disposable pull rod for reducing liquid level fluctuations in a crystallizer according to this utility model.

[0018] In the diagram: 1. Blanking head body; 2. Bevel; 3. Groove; 4. Long groove; 5. Limiting hole; 6. Asbestos rope; 7. Pin hole; 8. Disposable pull rod; 9. Limiting pin. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments, such as... Figure 1 arrive Figure 4 As shown:

[0020] Example 1: A blanking head for reducing liquid level fluctuations in a crystallizer includes a blanking head body 1. A bevel 2 is provided at the lower middle part of the end of the blanking head body 1. A groove 3 is provided at the lower part of the blanking head body 1 near the end. An elongated groove 4 extending to the groove 3 is provided at the end of the blanking head body 1. The elongated groove 4 extends downwards to the lower end face of the blanking head. A pin hole 7 is provided on the side of the elongated groove 4. The pin hole 7 is located between the blanking head body 1 and the groove 3, and a limiting pin 9 is inserted into the pin hole 7.

[0021] An L-shaped disposable pull rod 8 is inserted into the long groove 4. The disposable pull rod 8 is provided with a limiting hole 5 corresponding to the limiting pin 9. The disposable pull rod 8 is inserted into the long groove 4 until the limiting hole 5 and the pin hole 7 correspond. The disposable pull rod 8 is fixed to the end of the blank-drawing head by inserting the limiting pin 9 into the pin hole 7 and the limiting hole 5.

[0022] When the continuous casting machine is started, a disposable tie rod 8 is inserted into the crystallizer, and the steel billet is pulled out of the crystallizer using a drawing machine. Because the lower middle part of the end of the billet head is provided with an angle 2, the gap between the billet head and the small round billet is a certain distance in the vertical direction. The two gaps contact the upper and lower straightening rollers at different times, which avoids the two straightening rollers from contacting the gaps at the same time, avoids the simultaneous generation of vibration, reduces the fluctuation of the liquid surface in the crystallizer, and improves the quality of the small round billet.

[0023] Example 2: A billet-starting head for reducing liquid level fluctuations in a crystallizer includes a billet-starting head body 1. A 45-degree bevel angle 2 is provided at the lower middle part of the end of the billet-starting head body 1. A groove 3 is provided near the lower part of the end of the billet-starting head body 1. The groove 3 is detachably filled with asbestos cloth. A long groove 4 extending to the groove 3 is provided at the end of the billet-starting head body 1. The long groove 4 extends downwards to the lower end face of the billet-starting head. A pin hole 7 is provided on the side of the long groove 4. The pin hole 7 is located between the billet-starting head body 1 and the groove 3, and a limiting pin 9 is inserted into the pin hole 7.

[0024] An L-shaped disposable pull rod 8 is inserted into the long groove 4. The disposable pull rod 8 is made of threaded steel and is wrapped with asbestos rope 6. The asbestos rope 6 contacts the end of the billet head body 1. The asbestos cloth and asbestos rope 6 reduce the adhesion of the billet to the billet head. The disposable pull rod 8 is provided with a limiting hole 5 corresponding to the limiting pin 9. The disposable pull rod 8 is inserted into the long groove 4 until the limiting hole 5 and the pin hole 7 correspond. The disposable pull rod 8 is fixed to the end of the billet head by inserting the limiting pin 9 into the pin hole 7 and the limiting hole 5.

[0025] The specific working process is as follows: When the continuous casting machine is started, the disposable tie rod 8 is inserted into the crystallizer, and the steel billet is pulled out of the crystallizer by the drawing machine. Since the lower middle part of the end of the billet head is provided with an angle 2, the gap between the billet head and the small round billet is a certain distance in the vertical direction. The two gaps contact the upper and lower straightening rollers at different times, so as to avoid the two straightening rollers contacting the gap at the same time, avoid the simultaneous generation of vibration, reduce the fluctuation of the liquid surface in the crystallizer, and improve the quality of the small round billet.

[0026] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A billet initiator for reducing liquid level fluctuations in a crystallizer, characterized in that: The device includes a blanking head body (1), a bevel (2) is provided at the lower middle part of the blanking head body (1), a groove (3) is provided at the lower part near the end of the blanking head body (1), and a long groove (4) extending to the groove (3) is provided at the end of the blanking head body (1). A pin hole (7) is provided on the side of the long groove (4), a limiting pin (9) is inserted in the pin hole (7), and an L-shaped disposable pull rod (8) is inserted in the long groove (4). A limiting hole (5) corresponding to the limiting pin (9) is provided on the disposable pull rod (8).

2. The billet initiator for reducing liquid level fluctuations in a crystallizer as described in claim 1, characterized in that: The groove (3) is removably filled with asbestos cloth.

3. The billet initiator for reducing liquid level fluctuations in a crystallizer as described in claim 1, characterized in that: The disposable pull rod (8) is wrapped with an asbestos rope (6), which is in contact with the end of the blank-drawing head body (1).

4. A billet initiator for reducing liquid level fluctuations in a crystallizer as described in claim 1, characterized in that: The oblique angle (2) is 45 degrees.

5. A billet initiator for reducing liquid level fluctuations in a crystallizer as described in claim 1, characterized in that: The disposable tie rod (8) is made of threaded steel.

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