A new hot metal detection device for reciprocating rolling mill

Abstract

The utility model relates to a novel reciprocating mill hot metal detection device belongs to metallurgical industry section steel production technical field. Technical scheme is: stainless steel pipe no. 2 one end is fixed in push bed and moves with push bed left and right, and this port is towards the rolled piece on push bed, the other end of stainless steel pipe no. 2 is connected with the front end sleeve of stainless steel pipe no. 1, and the diameter of stainless steel pipe no. 1 and stainless steel pipe no. 2 is different, and stainless steel pipe no. 1 and stainless steel pipe no. 2 relatively slide left and right, and the rear end of stainless steel pipe no. 1 is provided with the probe of hot metal detector, and the hot metal detector is installed away from water cooling system, and stainless steel pipe no. 1 and stainless steel pipe no. 2 constitute the detection channel of hot metal detector. The utility model discloses hot metal detector away from cooling water pipe arrangement, and the temperature signal of rolled piece on push bed is collected through stainless steel pipe before the probe of hot metal detector, avoids the interference and influence of water mist produced by water spray cooling, and can accurately detect rolled piece position under the precondition of not reducing the cooling water amount.

Description

Technical Field

[0001] This utility model relates to a novel hot metal detection device for reciprocating rolling mills, belonging to the field of steel production technology in the metallurgical industry. Background Technology

[0002] In the steel rolling process of the metallurgical industry, hot metal detectors are used to detect and monitor the rolling process. For example, Chinese patent application CN202410163876.1, entitled "A Monitoring Method for Monitoring Abnormalities Detected by Hot Metal Detectors in Rolling Mills," is cited. In the production of section steel in the metallurgical industry, the reciprocating rolling mill in roughing rolls processes square billets through 3 to 5 passes, shaping them to meet the requirements of the finishing mill and then conveying them to the finishing mill. Fully automated roughing rolling is crucial for improving rolling efficiency; therefore, accurately determining the position of the workpiece is key to whether the roughing roll can complete automated rolling. Hot metal detectors are often used on the mill's pusher to check whether the workpiece (whose temperature is significantly higher than the ambient temperature) is in position. However, the roughing rolls, pusher, and rolled pieces of the reciprocating rolling mill for roughing all require water spray cooling. Existing hot metal detectors are installed in a water environment. Due to the interference and impact of water mist generated by water spray cooling, the error rate of hot metal detectors is extremely high, affecting normal production. Some companies reduce the amount of cooling water to reduce the interference and impact of water mist. However, reducing the amount of cooling water will affect the service life of the roughing rolls and pusher. Utility Model Content

[0003] The purpose of this invention is to provide a novel hot metal detection device for reciprocating rolling mills. The hot metal detector (including the probe) is arranged away from the cooling water pipe. The temperature signal of the rolled piece on the pusher is collected through a stainless steel pipe in front of the probe of the hot metal detector, avoiding interference and influence from water mist generated by water spray cooling. It can accurately detect the position of the rolled piece without reducing the amount of cooling water, thus solving the above-mentioned problems in the background technology.

[0004] The technical solution of this utility model is: A novel hot metal detection device for a reciprocating rolling mill includes a pusher bed, roughing rolls, and a water cooling system. The pusher bed moves left and right, pushing the workpiece to match the roughing rolls for reciprocating rolling. The water cooling system cools the pusher bed, the workpiece, and the roughing rolls. A horizontally arranged stainless steel tube II is mounted on the pusher bed. One end of the stainless steel tube II is fixed to the pusher bed and moves left and right with it, with this end facing the workpiece on the pusher bed. The other end of the stainless steel tube II is sleeved with the front end of a stainless steel tube I. The stainless steel tubes I and II have different diameters and slide relative to each other, forming a sliding sleeve structure. A hot metal detector probe is mounted at the rear end of the stainless steel tube I, installed away from the water cooling system. The stainless steel tubes I and II constitute the detection channel of the hot metal detector. Because the stainless steel tubes I and II have different diameters and are nested together, the movement of the stainless steel tube II with the pusher bed ensures that the stainless steel tube I does not detach or collide with it. The detection channel is dry, effectively isolating the detection path from the interference of cooling water. Without water interference, the detection signal of the hot metal detector is stable. Existing commercially available hot metal detectors can detect distances exceeding 6 meters, but the detection channel can be less than 6 meters. In other words, the distance between the hot metal detector and the pusher bed must be within 6 meters to ensure normal detection.

[0005] Furthermore, the hot metal detector has a mounting base, which is mounted on a steel plate, and the steel plate is mounted on a base base via a hot metal detector bracket.

[0006] Furthermore, the diameter of stainless steel tube one is smaller than the diameter of stainless steel tube two, and stainless steel tube one slides inside stainless steel tube two; the rear end of stainless steel tube one is fixed to a steel plate welded to it, and the front end of stainless steel tube one is suspended and inserted into stainless steel tube two.

[0007] Furthermore, a support is provided between the steel plate and the stainless steel pipe. Since the stainless steel pipe is relatively long, one end of the stainless steel pipe is matched with the stainless steel pipe, and the other end is supported on the steel plate to obtain a fulcrum. The support is welded to the steel plate and the stainless steel pipe respectively.

[0008] Furthermore, the pusher is connected to the pusher transmission gear via the pusher gear plate bracket. The pusher transmission gear is mounted on the base. The pusher transmission gear and the pusher gear plate bracket form a rack and pinion transmission mechanism to drive the pusher to move left and right.

[0009] Furthermore, the water cooling system includes cooling water pipes.

[0010] The beneficial effects of this utility model are as follows: The hot metal detector (including the probe) is arranged away from the cooling water pipe. The temperature signal of the workpiece on the pusher is collected through a stainless steel pipe in front of the probe of the hot metal detector, avoiding interference and influence from water mist generated by water spray cooling. It can accurately detect the position of the rolled workpiece without reducing the amount of cooling water, improve the rolling speed, reduce false signals, and reduce the accident rate. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model; In the diagram: 1. Hot metal detector; 2. Stainless steel pipe 1; 3. Stainless steel pipe 2; 4. Pusher; 5. Roughing roll; 6. Pusher drive gear; 7. Water cooling system; 8. Pusher gear plate bracket; 9. Hot metal detector bracket; 10. Steel plate; 11. Support; 12. Mounting base; 13. Probe; 14. Cooling water pipe; 15. Foundation base. Detailed Implementation

[0012] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0013] See attached document Figure 1 A novel reciprocating rolling mill hot metal detection device includes a pusher bed 4, a roughing roll 5, and a water cooling system 7. The pusher bed 4 moves left and right, pushing the workpiece to match the roughing roll 5 for reciprocating rolling. The water cooling system 7 cools the pusher bed 4, the workpiece, and the roughing roll 5. A horizontally arranged stainless steel tube 2 3 is installed on the pusher bed 4. One end of the stainless steel tube 2 3 is fixed on the pusher bed 4 and moves left and right with the pusher bed 4, with this end facing the workpiece on the pusher bed 4. The other end of the stainless steel tube 2 3 is sleeved with the front end of a stainless steel tube 1 2. The stainless steel tube 1 2 and the stainless steel tube 2 3 have different diameters and slide relative to each other left and right, forming a sliding sleeve structure. A probe 13 of a hot metal detector 1 is installed at the rear end of the stainless steel tube 1 2. The hot metal detector 1 is installed away from the water cooling system 7. The stainless steel tube 1 2 and the stainless steel tube 2 3 constitute the detection channel of the hot metal detector 1. Because stainless steel tube 2 and stainless steel tube 3 have different diameters and are nested together, stainless steel tube 3 moves with the pusher bed 4 while ensuring that stainless steel tube 2 does not detach or collide with it. The detection channel is dry, effectively isolating the interference of cooling water on the detection path. With no water interference in the detection channel of the hot metal detector 1, the detection signal is stable. Existing commercially available hot metal detectors can detect distances exceeding 6 meters, but the detection channel only needs to be less than 6 meters. In other words, the distance between the hot metal detector 1 and the pusher bed 4 must be within 6 meters to ensure normal detection.

[0014] The hot metal detector 1 has a mounting base 12, which is mounted on a steel plate 10. The steel plate 10 is mounted on a base base 15 via a hot metal detector bracket 9.

[0015] The diameter of stainless steel tube 2 is smaller than that of stainless steel tube 3, and stainless steel tube 2 slides inside stainless steel tube 3. The rear end of stainless steel tube 2 is fixed to the steel plate 10, and the front end of stainless steel tube 2 is suspended and inserted into stainless steel tube 3.

[0016] A support 11 is provided between the steel plate 10 and the stainless steel pipe 2. Since the stainless steel pipe 2 is relatively long, one end of the stainless steel pipe 2 is matched with the stainless steel pipe 3, and the other end is supported on the steel plate 10 through the support 11. The support 11 is welded to the steel plate 10 and the stainless steel pipe 2 respectively.

[0017] The pusher 4 is connected to the pusher transmission gear 6 via the pusher gear plate bracket 8. The pusher transmission gear 6 is mounted on the base 15. The pusher transmission gear 6 and the pusher gear plate bracket 8 form a rack and pinion transmission mechanism to drive the pusher 4 to move left and right.

[0018] The water cooling system 7 includes cooling water pipes 14.

[0019] In this embodiment, the hot metal detector 1 is installed inside a protective enclosure. The hot metal detector 1, stainless steel tube 1 2, and stainless steel tube 2 3 constitute the main structure of the reciprocating rolling mill hot metal detection system. The hot metal detector 1 and stainless steel tube 1 2 are welded to the steel plate 10 of the hot metal detector bracket 9, with the front end of stainless steel tube 1 2 suspended and inserted into stainless steel tube 2 3. Stainless steel tube 2 3 is welded to the pusher 4 and moves with it, sliding alongside stainless steel tube 1 2 without separating. During the rolling process, because stainless steel tube 2 3 and stainless steel tube 1 2 are always in communication, the cooling water does not interfere with the detection channel of the hot metal detector 1, and the detection angle is focused and unobstructed, resulting in more accurate detection.

Claims

1. A novel hot metal detection device for a reciprocating rolling mill, comprising a pusher bed (4), a roughing roll (5), and a water cooling system (7), wherein the pusher bed (4) moves left and right to push the workpiece to match the roughing roll (5) for reciprocating rolling, and the water cooling system (7) cools the pusher bed (4), the workpiece, and the roughing roll (5); characterized in that: A horizontally arranged stainless steel tube 2 (3) is set on the pusher (4). One end of the stainless steel tube 2 (3) is fixed on the pusher (4) and moves left and right with the pusher (4). The end of the tube faces the rolled piece on the pusher (4). The other end of the stainless steel tube 2 (3) is sleeved with the front end of the stainless steel tube 1 (2). The stainless steel tube 1 (2) and the stainless steel tube 2 (3) have different diameters. The stainless steel tube 1 (2) and the stainless steel tube 2 (3) slide relative to each other left and right. The stainless steel tube 1 (2) and the stainless steel tube 2 (3) form a sliding sleeve structure. The probe (13) of the hot metal detector (1) is set at the rear end of the stainless steel tube 1 (2). The hot metal detector (1) is installed away from the water cooling system (7). The stainless steel tube 1 (2) and the stainless steel tube 2 (3) constitute the detection channel of the hot metal detector (1).

2. The novel reciprocating rolling mill hot metal detection device according to claim 1, characterized in that: The hot metal detector (1) has a mounting base (12) which is mounted on a steel plate (10). The steel plate (10) is mounted on a base base (15) via a hot metal detector bracket (9).

3. A novel reciprocating rolling mill hot metal detection device according to claim 2, characterized in that: The diameter of the stainless steel tube 1 (2) is smaller than the diameter of the stainless steel tube 2 (3), and the stainless steel tube 1 (2) slides inside the stainless steel tube 2 (3); the rear end of the stainless steel tube 1 (2) is fixed to the steel plate (10) welded on, and the front end of the stainless steel tube 1 (2) is suspended and inserted into the stainless steel tube 2 (3).

4. A novel reciprocating rolling mill hot metal detection device according to claim 3, characterized in that: A support (11) is provided between the steel plate (10) and the stainless steel pipe (2), and the support (11) is welded to the steel plate (10) and the stainless steel pipe (2) respectively.

5. A novel reciprocating rolling mill hot metal detection device according to claim 3, characterized in that: The pusher (4) is connected to the pusher transmission gear (6) through the pusher gear plate bracket (8). The pusher transmission gear (6) is set on the base base (15). The pusher transmission gear (6) and the pusher gear plate bracket (8) constitute a rack and pinion transmission mechanism.

6. A novel reciprocating rolling mill hot metal detection device according to claim 3, characterized in that: The water cooling system (7) includes cooling water pipes (14).

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