CN-224222685-U - Novel continuous casting machine dummy bar head

CN224222685UCN 224222685 UCN224222685 UCN 224222685UCN-224222685-U

Abstract

The utility model provides a novel continuous casting machine dummy bar head, which comprises a dummy bar head and a dummy bar hook, wherein a U-shaped through groove is formed in one end of the dummy bar head, shaft holes are formed in two sides of the dummy bar head respectively, a shaft pin capable of being connected with a dummy bar is arranged in the shaft holes, a small U-shaped groove and a large U-shaped groove which are arranged in a stepped mode are formed in one end of the dummy bar head, which is far away from the dummy bar, a pin hole crossing the small U-shaped groove is formed in the dummy bar head, the dummy bar hook comprises a hook body and a limiting rod which is vertically connected with the end part of an upright section of the hook body, the limiting rod is positioned in the large U-shaped groove, two ends of the limiting rod are respectively attached to two side walls of the large U-shaped groove, the upright section of the hook body is attached to the closed end of the small U-shaped groove, a bolt is arranged in the pin hole, the upper side of the bolt is attached to the upright section of the hook body, and the dummy bar head can be tightly combined with the dummy bar head, so that a billet and the dummy bar head can be prevented from being detached from failing to open casting, thereby causing production accidents.

Inventors

MA GUANGLIN
YUAN MING
HOU YI
PI HUAIYU
YANG LONGFEI
YANG CHANGTAO

Assignees

首钢水城钢铁（集团）有限责任公司

Dates

Publication Date: 20260512
Application Date: 20250411

Claims (4)

1. The novel continuous casting machine dummy bar head is characterized by comprising a dummy bar head part (1) and a dummy bar hook (2), wherein a U-shaped through groove (3) is formed in one end of the dummy bar head part (1), shaft holes (4) are respectively formed in two sides of the dummy bar head part, a shaft pin which can be connected with a dummy bar (5) is arranged in the shaft holes (4), a small U-shaped groove (6) and a large U-shaped groove which are arranged in a stepped mode are formed in one end of the dummy bar head part (1) which deviates from the dummy bar (5), a pin hole which crosses the small U-shaped groove (6) is formed in the dummy bar head part (1), the dummy bar hook (2) comprises a hook body (21) and a limiting rod (22) which is vertically connected with the end part of an upright section of the hook body (21), the limiting rod (22) is positioned in the large U-shaped groove, two ends of the limiting rod are respectively attached to two side walls of the large U-shaped groove, the upright section of the hook body (21) is attached to the small U-shaped groove (6), a closed end (7) is arranged in the pin hole, and the upper side of the hook body (7) is attached to the upright section (21); The vertical section of the hook body (21) is provided with a reinforcing rib (9) along the length direction of the vertical section, which is away from the hook side.
2. The novel continuous casting machine dummy bar head according to claim 1, wherein a baffle (8) which can be attached to the free end of the dummy bar head (1) is vertically arranged on the vertical section of the hook body (21).
3. The novel continuous casting machine dummy bar head according to claim 2, wherein the baffle plate (8) is made of steel plate with the thickness of 6mm, and the dummy bar hook (2) is made of screw steel with the diameter of 32 mm.
4. The novel continuous casting machine dummy bar head according to claim 1, wherein the hook side of the hook body (21) is downward arranged towards the direction of the small U-shaped groove (6).

Description

Novel continuous casting machine dummy bar head Technical Field The utility model belongs to the field of continuous casting machines, and particularly relates to a novel dummy bar head of a continuous casting machine. Background In the production process of the continuous casting machine, casting is a key link of production, the operation mode is that a dummy bar (the head is a dummy bar head) conforming to the radian of the casting machine is powered by a withdrawal and straightening machine to be sent out of a crystallizer, 200-300mm of dummy bar is fed into the crystallizer, the dummy bar is stopped from being sent, the periphery of the dummy bar is plugged by using asbestos ropes (cloth) (molten steel is prevented from leaking into gaps after casting, blocking is caused), and a tundish is left for casting after a corresponding number of waste steel particles and cooled steel are placed. After pouring of the tundish, pouring the molten steel into the crystallizer by drainage of the tundish nozzle, cooling the cooled cold steel, and quickly solidifying the molten steel and embedding the molten steel with a dummy ingot head with a corresponding design structure. At the moment, a vibration device and a withdrawal and straightening machine are started, the solidified steel billet shell is demolded with the crystallizer under the action of vibration, the dummy bar and the connected solidified steel billet are continuously pulled out according to a certain pulling speed by providing reverse power by the withdrawal and straightening machine, continuous casting is realized, and when the steel billet and the connected dummy bar head run to the tail part of the withdrawal and straightening machine, the joint of the steel billet and the dummy bar head is disconnected (namely, the ingot is removed) by utilizing the depressing force of the straightening machine, so that normal continuous casting billet production is carried out. Therefore, the connection form of the dummy ingot head and the continuous casting blank is critical to the continuous casting whether the casting is started and the ingot is removed smoothly or not and the continuous casting production is smooth. Fig. 1 shows a dummy bar head structure in the prior art, which has the following problems: The flow and the temperature of the molten steel entering the crystallizer have great influence on the density of the solidified molten steel in the groove; The intensity (influenced by temperature) of the inlaid part is difficult to control for the starting time of the drawn blank, the intensity of solidified molten steel in the starting early groove is low, and the solidified molten steel is easy to deform to cause detachment, so that casting failure (commonly called drawing off) and subsequent difficult treatment are caused, and the method belongs to a malignant accident of continuous casting. Disclosure of utility model The utility model provides a novel continuous casting machine dummy ingot head, which can tightly combine a billet with the dummy ingot head to avoid production accidents caused by casting failure due to disengagement, and the specific scheme is as follows: The novel continuous casting machine dummy bar head comprises a dummy bar head part and a dummy bar hook, wherein a U-shaped through groove is formed in one end of the dummy bar head part, shaft holes are formed in two sides of the dummy bar head part respectively, a shaft pin which can be connected with a dummy bar is arranged in the shaft holes, a small U-shaped groove and a large U-shaped groove which are arranged in a stepped mode are formed in one end of the dummy bar head part, which is far away from the dummy bar, a pin hole which is transversely arranged in the small U-shaped groove is formed in the dummy bar head part, the dummy bar hook comprises a hook body and a limiting rod which is vertically connected with the end part of an upright section of the hook body, the limiting rod is positioned in the large U-shaped groove, two ends of the limiting rod are respectively attached to two side walls of the large U-shaped groove, the upright section of the hook body is attached to the closed end of the small U-shaped groove, a bolt is arranged in the pin hole, and the upper side of the bolt is attached to the upright section of the hook body; The side of the hook body vertical section, which is away from the hook, is provided with a reinforcing rib along the length direction of the hook body vertical section. Further, a baffle plate which can be attached to the free end of the dummy bar head is vertically arranged on the vertical section of the hook body. Still further, the baffle plate adopts a steel plate with the thickness of 6mm, and the dummy ingot hook adopts a threaded steel with the diameter of 32 mm. Still further, the crotch side of the hook body is towards little U type groove direction and downwards setting. The beneficial effects of the utility model are as follows: Th