Hot-rolled coil steel billet oxide skin cleaning equipment

Abstract

The utility model discloses hot-rolled coil billet oxide skin cleaning equipment, and mainly relates to the field of hot-rolled coil processing equipment. Comprising an impact spraying base and an impact spraying piece, the impact spraying piece is arranged on the impact spraying base, and impact spraying is conducted on a hot rolled coil through the impact spraying piece; the impact spraying part comprises a pre-spraying opening and a rear-end spraying opening, and when a hot-rolled coil passes through the impact spraying mechanism, the pre-spraying opening sprays the hot-rolled coil and conveys the hot-rolled coil to the rear-end spraying opening. The device has the beneficial effects that the oxide skin on the surface layer of the calcined steel billet can be cleaned, so that the steel billet without the oxide skin can be effectively rolled, and the mechanical property of a hot-rolled coil obtained by production is ensured not to be influenced.

Description

Technical Field

[0001] The utility model relates to the field of hot rolled coil processing equipment, in particular to hot rolled coil steel billet oxide scale cleaning equipment. Background Art

[0002] Because the overall temperature of the hot-rolled coil is at a high level after calcination, the hot-rolled coil meets the heat treatment requirements of the steel coil. Because the steel coil will come into contact with oxygen in the air during calcination and subsequent extrusion rolling operations, in this case, the surface of the hot-rolled coil at a high temperature will come into contact with oxygen, so that an oxide layer, i.e., iron oxide, is formed on the surface of the steel coil. However, the iron oxide formed does not meet the requirements for subsequent quenching, because the quenching operation on the oxide layer cannot enable the hot-rolled coil to achieve the best quenching performance, so that the hot-rolled coil after quenching does not meet the production requirements. Moreover, the oxidizing physical properties of the iron formed on the surface of the hot-rolled coil are poor, and it is difficult to remove the oxide scale after the temperature of the hot-rolled coil is lowered. Therefore, it is necessary to remove the oxide layer when the temperature of the steel coil is high and before quenching, so that the hot-rolled coil can achieve the best quenching effect.

[0003] Based on the above problems, it is necessary to design a hot-rolled coil steel billet oxide scale cleaning equipment that can clean the oxide scale on the surface of the calcined steel billet, so that the steel billet without oxide scale can be effectively rolled, thereby ensuring that the mechanical properties of the produced hot-rolled coil will not be affected. Utility Model Content

[0004] The utility model aims to provide a hot-rolled coil steel billet oxide scale cleaning device, which can remove the oxide scale on the surface of the calcined steel billet so that the oxide scale will not adhere to the surface of the steel billet, thereby ensuring that there will be no large amount of iron oxide inside the produced hot-rolled coil, thereby ensuring that the hot-rolled coil can be effectively applied and used.

[0005] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0006] A hot rolled coil steel billet oxide scale cleaning device comprises an impact spraying base and an impact spraying member, wherein the impact spraying member is arranged on the impact spraying base, and the hot rolled coil is impact sprayed by the impact spraying member; the impact spraying member comprises a pre-spraying port and a rear end spraying port, and when the hot rolled coil passes through the impact spraying mechanism, the pre-spraying port sprays the hot rolled coil and then transports it to the rear end spraying port position.

[0007] The pre-spraying port comprises a plurality of spiral atomizing nozzles, which are arranged on the impact spraying base, and each of the bolt atomizing nozzles is individually connected to a delivery pipeline, through which the cold liquid is delivered to the position of the spiral atomizing nozzle and then sprayed out.

[0008] The rear end spray outlet is a slit spray outlet, and a water distribution and conveying shell is connected to the rear end of the slit spray outlet; a plurality of water outlets are arranged at the connection position between the water distribution and conveying shell and the slit spray outlet, and the water distribution and conveying shell is connected to a cold liquid inlet pipe, and when the cold liquid enters the water distribution and conveying shell, it flows out from the plurality of water outlets of the water distribution and conveying shell and enters the inside of the slit spray outlet at the same time.

[0009] The impact spraying base is connected with a rotating mechanism, and the tilting direction of the impact spraying base is adjusted by the rotating mechanism.

[0010] Compared with the prior art, the beneficial effects of the present invention are:

[0011] When the device is set up, the impact spray base and the impact spray part are set up to clean the oxide scale on the surface of the steel billet. When the impact spray part is set up, the steel billet is first sprayed through the pre-spraying port, so that the oxide layer on the surface of the steel billet shrinks due to cold, thereby cracking and stratification; and then the cracked steel billet is impacted through the rear spraying port, so that the oxide scale is impacted and separated from the surface of the steel billet, thereby easily completing the task of cleaning the oxide scale. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Attached Figure 1 It is a schematic diagram of the structure of the utility model.

[0013] Attached Figure 2 It is a schematic diagram of the structure of the utility model.

[0014] Attached Figure 3 It is a partial structural schematic diagram of the utility model.

[0015] Attached Figure 4 It is a cross-sectional view of the utility model.

[0016] Numbers shown in the accompanying drawings:

[0017] 1. Impact spray base; 2. Impact spray component; 3. Pre-spray port; 4. Rear spray port; 5. Spiral atomizing nozzle; 6. Slit spray port; 7. Water distribution and conveying shell; 8. Water outlet. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the present application.

[0019] Because the oxide scale formed on the surface of the hot-rolled coil after calcination is in an attached state, it mainly consists of ferrous oxide, ferroferric oxide, and ferrous oxide. From the inside to the outside: ferrous oxide, ferroferric oxide, and ferrous oxide. Among them, ferrous oxide has a loose structure and a weaker protective effect, while ferric oxide and ferrous oxide have a dense structure and better protective properties. Therefore, the connection between the oxide scale and the hot-rolled coil body is ferrous oxide. Because its structure is loose and its protective effect is weak, the oxide scale can be easily removed under the action of external force, thereby achieving the task of removing the outer oxide scale of the hot-rolled coil after calcination. Therefore, based on the characteristics of the above-mentioned hot-rolled coil oxide scale, the following structure is set:

[0020] A hot rolled coil steel billet oxide scale cleaning device comprises an impact spraying base 1 and an impact spraying member 2. The impact spraying member 2 is arranged on the impact spraying base 1, and the hot rolled coil is impact sprayed by the impact spraying member 2. The impact spraying base 1 is set up for the purpose of installing the impact spraying member 2. At the same time, because the oxide scale on the hot rolled coil needs to be impacted, after the impact spraying member 2 is installed on the impact spraying base 1, the impact spraying direction of the impact spraying member 2 should be opposite to the moving direction of the hot rolled coil, so that the sprayed liquid can effectively act on the hot rolled coil, so that the oxide scale on the hot rolled coil can be effectively removed. As for the impact spraying member 2, it is suitable for impact spraying the oxide scale on the hot-rolled coil. It should be considered here that although the protective effect of the loose structure of ferrous oxide is weak, the hot-rolled coil will not obviously show the problem of loose structure when it is not subjected to external force. At the same time, because the temperature of the hot-rolled coil after calcination is high, it is not easy to amplify the problem of loose structure of ferrous oxide in this case, so the following structure is set for the impact spraying member 2:

[0021] A hot rolled coil steel billet oxide scale cleaning device comprises a pre-spraying port 3 and a rear end spraying port 4. When the hot rolled coil passes through the impact spraying mechanism, the pre-spraying port 3 sprays the hot rolled coil and then transports it to the rear end spraying port 4. When setting up here, the impact spraying member 2 is prevented from directly spraying and impacting the hot rolled coil, but the pre-spraying port 3 and the rear end spraying port 4 are set up. When the calcined steel plate (the hot rolled coil before calcination) passes through the impact spraying member 2, the pre-spraying port 3 first sprays the calcined steel plate with cold liquid, so that the steel plate at a relatively high temperature is cooled down. Because the oxide scale on the outer layer of the steel plate first contacts with the cold liquid, the oxide scale at this time is cooled and shrunk, so that the ferrous oxide is loose, and cracks or even separation occurs between the oxide scale and the steel plate body. After the steel plate is sprayed with cold liquid through the pre-spraying port 3, it reaches the rear-end spraying port 4. At this time, the oxide scale on the outer layer of the steel plate has shown cracking. After passing through the impact spraying through the rear-end spraying port 4 again, it is easier to impact and fall off the oxide scale on the steel plate, thereby ensuring a better oxide scale falling effect.

[0022] Regarding the specific structural setting of the pre-spraying port 3: the pre-spraying port 3 includes a plurality of spiral atomizing nozzles 5, and the plurality of spiral atomizing nozzles 5 are arranged on the impact spraying base 1, and each of the bolt atomizing nozzles is individually connected to a delivery pipeline, and the cold liquid is transported to the position of the spiral atomizing nozzle 5 through the delivery pipeline and then sprayed out; because the pre-spraying port 3 is mainly used to pre-cool the calcined steel plate, so that the oxide scale is cracked by cooling, and because the spraying range required by the pre-spraying port 3 should be wider, the oxide scale on the surface of the steel plate is pre-cooled in a larger range. Therefore, the spiral atomizing nozzle 5 is set here, and each spiral atomizing nozzle 5 is individually connected to a delivery pipeline, so as to cool the steel plate in a larger range, and the atomized spraying cold liquid forms a covering and superimposed spraying effect, thereby ensuring that the oxide scale on the surface of the steel plate is effectively pre-cooled and cracked, so as to facilitate the subsequent rear-end spraying port 4 to clean the oxide scale on the steel plate.

[0023] Regarding the specific structural setting of the rear end spray port 4: the rear end spray port 4 is a slit spray port 6, and the rear end of the slit spray port 6 is connected to a water distribution and conveying shell 7; because the required rear end spray port 4 needs to be applied to the steel plate with a large force, thereby impacting the oxide scale on the surface of the steel plate, so that the oxide scale on the surface of the steel plate is impacted and falls off; so the slit spray port 6 is set here, when the liquid is transported to the inside of the slit spray port 6, the liquid is squeezed in the slit spray port 6, so that the kinetic energy of the liquid is converted into potential energy, and when the liquid reaches the position of the slit spray port 6, the pressure is released at the moment of spraying outward through the slit spray port 6, so that the potential energy of the liquid is converted into kinetic energy, and then the oxide scale on the steel plate is impacted at a high speed, so that the oxide scale is more likely to fall off after being impacted at a high speed. At the same time, in order to increase the spraying flow rate, a plurality of water outlets 8 are provided at the connection position between the water distribution and conveying shell 7 and the slit spraying port 6, and the water distribution and conveying shell 7 is connected to the cold liquid inlet pipe. When the cold liquid enters the water distribution and conveying shell 7, it flows out from the plurality of water outlets 8 of the water distribution and conveying shell 7 and enters the slit spraying port 6 at the same time; the water flow in the water distribution and conveying shell 7 can flow outward at the plurality of water outlets 8 and squeeze into the slit spraying port 6 at the same time, thereby further increasing the potential energy in the slit spraying port 6, so that the liquid sprayed at the slit spraying port 6 has a larger flow rate and effectively acts on the oxide scale position of the steel plate.

[0024] The impact spray base 1 is connected with a rotating mechanism, and the tilting direction of the impact spray base 1 is adjusted by the rotating mechanism. Because the direction of the impact spray base 1 needs to be opposite to the moving direction of the hot-rolled coil, the angle of the impact spray base 1 is adjusted by setting the rotating mechanism, that is, the tilting angle of the impact spray member 2 is adjusted, so that the liquid sprayed by the impact spray member 2 can effectively act on the hot-rolled coil.

[0025] Therefore, a hot-rolled coil steel billet oxide scale cleaning device can remove the oxide scale on the surface of the calcined steel billet, so that the oxide scale will not adhere to the surface of the steel billet, thereby ensuring that there will be no large amount of iron oxide inside the produced hot-rolled coil, thereby ensuring that the hot-rolled coil can be effectively applied and used.

Claims

1. A hot rolled steel billet oxide scale cleaning device, characterized in that: It comprises an impact spraying base (1) and an impact spraying member (2), wherein the impact spraying member (2) is arranged on the impact spraying base (1), and the impact spraying member (2) is used to impact spray the hot rolled coil; The impact spraying member (2) comprises a pre-spraying port (3) and a rear-end spraying port (4). When the hot-rolled coil passes through the impact spraying mechanism, the pre-spraying port (3) sprays the hot-rolled coil and then transports it to the rear-end spraying port (4).

2. The hot rolled steel billet oxide scale cleaning device according to claim 1, characterized in that: The pre-spraying port (3) comprises a plurality of spiral atomizing nozzles (5), wherein the plurality of spiral atomizing nozzles (5) are arranged in an array on the impact spraying base (1), and each of the spiral atomizing nozzles is individually connected to a delivery pipeline, through which the cold liquid is delivered to the position of the spiral atomizing nozzle (5) and then sprayed out.

3. The hot rolled steel billet oxide scale cleaning device according to claim 2, characterized in that: The rear end spraying port (4) is a slit spraying port (6), and the rear end of the slit spraying port (6) is connected to a water distribution and conveying housing (7); A plurality of water outlets (8) are provided at the connection position between the water distribution and conveying housing (7) and the slit spraying port (6), and the water distribution and conveying housing (7) is connected to a cold liquid inlet pipe. When the cold liquid enters the water distribution and conveying housing (7), it flows out from the plurality of water outlets (8) of the water distribution and conveying housing (7) and simultaneously enters the interior of the slit spraying port (6).

4. The hot rolled steel billet oxide scale cleaning device according to claim 3, characterized in that: The impact spraying base (1) is connected to a rotating mechanism, and the tilting direction of the impact spraying base (1) is adjusted by the rotating mechanism.

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