A method and system for hot strip delivery

Abstract

This invention discloses a method for conveying hot billets, relating to the steel production field, and solves the technical problem that existing billet conveying technologies lead to damage to hot conveying equipment and billets. The method involves: acquiring the speed at which the billet enters the rolling mill; acquiring the conveying speed of the billet in the hot conveying pusher; linking the speed of the billet entering the rolling mill and the conveying speed of the billet in the hot conveying pusher with the speed of the roller conveyor on the steelmaking side; acquiring the real-time position of the billet on the hot conveying pusher and the real-time position of the billet on the steelmaking side; and adjusting the speed of the hot conveying pusher based on the real-time position of the billet on the hot conveying pusher and the real-time position of the billet on the steelmaking side. This invention also discloses a hot billet conveying system. This invention can reduce the failure rate of billets getting stuck in the heating furnace, improve the hot conveying rate of billets, reduce energy consumption, and reduce the spare parts cost of hot conveying equipment.

Description

Technical Field

[0001] This invention relates to the field of steel production, and more specifically, to a method and system for hot billet conveying. Background Technology

[0002] The steel billets fed into the heating furnace of a steel rolling mill mainly consist of hot billets and cold billets. The hot billets are conveyed from the steelmaking side via hot conveyor rollers. The hot conveying rate of the hot conveyor rollers is directly related to energy consumption. Therefore, improving the hot conveying rate is very important for reducing energy consumption and achieving green development. However, the existing technology mainly involves the steelmaking side conveying the hot billets from the hot conveyor rollers on the steelmaking side to the hot conveyor rollers on the rolling side according to the production rhythm.

[0003] This method has significant drawbacks and defects. Firstly, the steelmaking side transfers hot-delivered billets from the hot-delivered roller conveyor to the rolling side according to the production rhythm. If the rolling side's hot-delivered pusher is in the lead or middle position, the billet will directly impact the pusher, causing damage and interrupting hot delivery. This leads to a decrease in the hot delivery rate, increased energy consumption, and higher spare parts costs. Secondly, if there are still billets on the rolling side's hot-delivered roller conveyor, they will collide with each other, causing the billets to bend and potentially become stuck during their entry into the heating furnace. This also leads to equipment failure, interrupting hot delivery, reducing the hot delivery rate, increasing energy consumption, and higher spare parts costs. Thirdly, according to the production rhythm, the hot-delivered steel billets are transferred from the hot-delivered roller conveyor on the steelmaking side to the hot-delivered roller conveyor on the rolling side. When the roller conveyor on the rolling side has not yet turned, it will cause the hot-delivered roller conveyor on the steelmaking side to be overloaded and vibrate too much, which will lead to equipment damage, waste of spare parts costs and reduction of hot delivery rate. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a hot billet conveying method and system to address the shortcomings of the prior art, thereby solving the technical problem that the existing billet conveying technology will cause damage to the hot conveying related equipment and the billet.

[0005] The present invention discloses a method for conveying hot-charged billets, wherein the method comprises:

[0006] The speed at which the steel billet enters the rolling mill is obtained;

[0007] Obtain the conveying speed of the steel billet in the hot-feeding pusher;

[0008] The speed at which the billet enters the rolling mill and the conveying speed of the billet in the hot conveyor pusher are linked with the speed of the roller conveyor on the steelmaking side.

[0009] The real-time position of the billet on the hot conveyor pusher and the real-time position of the billet on the steelmaking side are obtained.

[0010] The speed of the hot-feeding pusher is adjusted by the real-time position of the billet on the hot-feeding pusher and the real-time position of the billet on the steelmaking side, so as to maintain a set safe distance between the billets on the rolling side and the steelmaking side.

[0011] As a further improvement, the speed of the roller conveyor on the steelmaking side is determined in the following manner:

[0012]

[0013] Wherein, V2 is the speed of the roller conveyor on the steelmaking side, V0 is the speed at which the billet enters the rolling mill, and V1 is the conveying speed of the billet in the hot conveying pusher.

[0014] Furthermore, increasing the speed at which the billet enters the rolling mill increases the speed of the roller conveyor on the steelmaking side; conversely, decreasing the speed at which the billet enters the rolling mill decreases the speed of the roller conveyor on the steelmaking side.

[0015] Furthermore, the speed of the hot-feeding steel pusher is determined in the following way:

[0016]

[0017] Wherein, V3 is the speed of the hot conveyor pusher, V2 is the speed of the roller conveyor on the steelmaking side, and V1 is the conveying speed of the billet in the hot conveyor pusher.

[0018] Furthermore, a speed detection point is set on the hot conveyor pusher. When the real-time position of the billet on the hot conveyor pusher reaches the speed detection point and the billet is on the steelmaking side roller table, the speed of the steelmaking side roller table is reduced, thereby reducing the speed of the hot conveyor pusher and maintaining a set safe distance between the billet on the rolling side and the steelmaking side.

[0019] Furthermore, the speed at which the billet enters the rolling mill and the conveying speed of the billet in the hot conveying pusher are both obtained through speed sensors.

[0020] Furthermore, the real-time position of the billet on the hot conveying and pushing machine is obtained by a displacement sensor and a hot metal detection sensor.

[0021] A hot billet conveying system includes a controller, a hot billet pusher drive module, and a billet identification module; the controller uses the control method described in any one of the above claims to control the hot billet pusher drive module and the billet identification module to convey the billet.

[0022] Beneficial effects

[0023] The advantages of this invention are as follows: By acquiring the speed at which the billet enters the rolling mill and the conveying speed of the billet in the hot conveying pusher, and by linking the speed of the billet entering the rolling mill and the conveying speed of the billet in the hot conveying pusher with the speed of the roller conveyor on the steelmaking side, the real-time position of the billet on the hot conveying pusher is acquired. The speed of the hot conveying pusher is adjusted based on the real-time position of the billet on the hot conveying pusher and the real-time position of the billet on the steelmaking side, maintaining a set safe distance between the billets on the rolling mill side and the steelmaking side. This invention achieves the acquisition of the operating status of the hot conveying roller conveyor on the rolling mill side and the acquisition of the billet position, avoiding collisions between adjacent billets, reducing the failure rate of billets getting stuck in the heating furnace, improving the hot conveying rate of billets, reducing energy consumption, and reducing the spare parts cost of hot conveying related equipment. Attached Figure Description

[0024] Figure 1 This is a flowchart of the method of the present invention. Detailed Implementation

[0025] The present invention will be further described below with reference to embodiments, but this does not constitute any limitation on the present invention. Any limited modifications made by any person within the scope of the claims of the present invention are still within the scope of the claims of the present invention.

[0026] See Figure 1 The present invention provides a method for conveying hot-charged billets, the method comprising:

[0027] The speed at which the billet enters the rolling mill and the conveying speed of the billet in the hot conveying pusher are both acquired using speed sensors. This enables the collection of the billet's operational status.

[0028] The speed at which the billet enters the rolling mill and the conveying speed of the billet in the hot conveyor are linked to the speed of the roller conveyor on the steelmaking side; the speed of the roller conveyor on the steelmaking side is determined in the following way.

[0029]

[0030] Where V2 is the speed of the roller conveyor on the steelmaking side, V0 is the speed at which the billet enters the rolling mill, and V1 is the conveying speed of the billet in the hot conveying pusher.

[0031] Increasing the speed at which the billet enters the rolling mill increases the speed of the roller conveyor on the steelmaking side; decreasing the speed at which the billet enters the rolling mill decreases the speed of the roller conveyor on the steelmaking side.

[0032] Obtain the real-time position of the billet on the hot conveyor and the real-time position of the billet on the steelmaking side;

[0033] The speed of the hot conveying and pushing machine is adjusted by the real-time position of the billet on the hot conveying and pushing machine and the real-time position of the billet on the steelmaking side, so as to maintain a set safe distance between the billets on the rolling side and the steelmaking side.

[0034] The speed of the hot-feeding steel pusher is determined in the following way.

[0035]

[0036] Wherein, V3 is the speed of the hot conveyor pusher, V2 is the speed of the roller conveyor on the steelmaking side, and V1 is the conveying speed of the billet in the hot conveyor pusher.

[0037] A speed detection point is set on the hot conveyor pusher. When the real-time position of the billet on the hot conveyor pusher has not reached the speed detection point, the speed of the roller conveyor on the steelmaking side is increased, thereby increasing the speed of the hot conveyor pusher and accelerating the pushing speed.

[0038] When the billet's real-time position on the hot conveyor reaches the speed detection point and the billet is on the steelmaking side roller conveyor, the speed of the steelmaking side roller conveyor is reduced, thus slowing down the hot conveyor and maintaining a set safe distance between the billets on the rolling side and the steelmaking side. This avoids collisions between adjacent billets and reduces the failure rate of billets getting stuck when entering the heating furnace.

[0039] The real-time position of the billet on the hot conveying and pushing machine is obtained by displacement sensors and hot metal detection sensors.

[0040] The displacement sensor, hot metal detection sensor, and velocity sensor in this invention are all existing technologies, and this invention does not improve upon them.

[0041] A hot billet conveying system includes a controller, a hot billet pusher drive module, and a billet identification module; the controller uses the control method described above to control the hot billet pusher drive module and the billet identification module to convey the billet.

[0042] The use of the controller, hot conveying pusher drive module, and billet identification module enables the acquisition of the operating status of the hot conveying roller conveyor on the rolling side, and the acquisition of the billet position. This avoids collisions between adjacent billets, reduces the failure rate of billets getting stuck in the heating furnace, improves the hot conveying rate of billets, reduces energy consumption, and reduces the spare parts cost of hot conveying related equipment.

[0043] The above description is only a preferred embodiment of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of the present invention, and these will not affect the effectiveness of the implementation of the present invention or the practicality of the patent.

Claims

1. A method for conveying hot-charged billets, characterized in that, The method is as follows: The speed at which the steel billet enters the rolling mill is obtained; Obtain the conveying speed of the steel billet in the hot-feeding pusher; The speed at which the billet enters the rolling mill and the conveying speed of the billet in the hot conveyor pusher are linked with the speed of the roller conveyor on the steelmaking side. The real-time position of the billet on the hot conveyor pusher and the real-time position of the billet on the steelmaking side are obtained. The speed of the hot conveying and pushing machine is adjusted by the real-time position of the billet on the hot conveying and pushing machine and the real-time position of the billet on the steelmaking side, so as to maintain a set safe distance between the billets on the rolling side and the steelmaking side. The speed of the roller conveyor on the steelmaking side is determined in the following way. ； Wherein, V2 is the speed of the roller conveyor on the steelmaking side, V0 is the speed at which the billet enters the rolling mill, and V1 is the conveying speed of the billet in the hot conveying pusher. The speed of the hot-feeding steel pusher is determined by the following method. ； Wherein, V3 is the speed of the hot conveyor pusher, V2 is the speed of the roller conveyor on the steelmaking side, and V1 is the conveying speed of the billet in the hot conveyor pusher. A speed detection point is set on the hot conveyor pusher. When the real-time position of the billet on the hot conveyor pusher reaches the speed detection point and the billet is on the steelmaking side roller table, the speed of the steelmaking side roller table is reduced, so that the speed of the hot conveyor pusher is reduced, and a set safe distance is maintained between the billet on the rolling side and the steelmaking side.

2. The hot billet conveying method according to claim 1, characterized in that, Increasing the speed at which the billet enters the rolling mill increases the speed of the roller conveyor on the steelmaking side; decreasing the speed at which the billet enters the rolling mill decreases the speed of the roller conveyor on the steelmaking side.

3. The method for conveying a hot-charged billet according to claim 1, characterized in that, The speed at which the billet enters the rolling mill and the conveying speed of the billet in the hot conveying pusher are both obtained through speed sensors.

4. The method for conveying a hot-charged billet according to claim 1, characterized in that, The real-time position of the billet on the hot conveying and pushing machine is obtained by a displacement sensor and a hot metal detection sensor.

5. A hot billet conveying system, characterized in that, The system includes a controller, a hot-feeding pusher drive module, and a billet identification module; the controller uses the conveying method as described in any one of claims 1-4 to control the hot-feeding pusher drive module and the billet identification module to convey the billet.

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