A water infiltration prevention structure of a thick-gauge steel plate quenching machine

Abstract

The utility model belongs to thick gauge steel plate quenching machine anti -infiltration water structure in thick gauge steel plate production technical field. Quenching machine (1) is close to thick plate heat treatment furnace (2) export side, and quenching machine (1) includes waterproof curtain, and waterproof curtain is close to thick plate heat treatment furnace (2) export side setting, and waterproof curtain includes multiple chains (3), first support (4), second support (5), and the high temperature cloth (6) of setting downward extension between first support (4) and second support (5), and multiple chains (3) are connected first support (4) and second support (5) different position respectively. Thick gauge steel plate quenching machine anti -infiltration water structure described in the utility model, simple structure can effectively stop the water seepage, prevent the water seepage to the heat treatment furnace direction flow, guarantee the uniformity of steel plate overall quenching temperature, satisfy the process requirement.

Description

Technical Field

[0001] This utility model belongs to the field of thick steel plate production technology, and more specifically, it relates to a water-proof structure for a thick steel plate quenching machine. Background Technology

[0002] Thick plate roller quenching machines are used for quenching thick steel plates. Utilizing the principle of phase transformation strengthening, they rapidly cool the steel plate from its austenitizing temperature to room temperature using multiple high-pressure slits and high-density nozzles, resulting in a metastable martensitic or bainitic structure, thus increasing the steel plate's strength and hardness. However, in actual production applications, the distance between the slits / nozzles and the furnace opening of the thick plate heat treatment furnace is too close. For steel plates thicker than 30mm, during quenching, due to the slow roller speed and large water volume in the slits and high-density nozzles, water accumulated in the high-pressure section cannot be discharged to both sides in time, and seeps towards the heat treatment furnace. This situation leads to a decrease in the steel plate's water entry temperature, and the formation of a vapor film on the steel plate surface. This vapor film reduces the quenching cooling capacity, severely affecting the uniformity of performance at both ends of the steel plate. This results in unstable performance of quenched steel plates such as wear-resistant steel and high-strength steel, requiring repeated performance improvements. This not only restricts the increase in quenching capacity but also hinders the development of steel grades with high quenching temperature sensitivity, affecting product quality.

[0003] The existing technology includes a method for quenching thin-gauge steel plates, with publication number CN110117708B. This technology relates to a method for quenching thin-gauge steel plates with a thickness of 4-80 mm. The production steps of the quenching method include a heating stage and a water spray cooling stage. The heating stage uses a quenching and normalizing furnace, which is a continuous roller hearth type, with nitrogen gas flowing inside. The heating temperature of the quenching and normalizing furnace is 890-910℃, and the furnace uses two rows of radiant tubes for heating. The furnace temperature fluctuation range is <5℃. The water spray cooling stage uses a quenching machine, which has pressure rollers installed at the top and bottom. The quenching machine operates in a continuous roller pressing quenching mode. The water spray cooling stage has two quenching modes: winter and summer. The medium used in the water spray cooling stage is circulating cooling water, and the temperature of the circulating cooling water is <35℃. This invention solves the problem of warping and deformation of thin steel plates during quenching, making the straightness of thin steel plates stable and controllable during quenching. However, this technology does not involve the technical problems and solutions of this application. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a water-proof structure for thick steel plate quenching machines that is simple in structure, can effectively block water seepage, prevent water from flowing towards the heat treatment furnace, ensure the uniformity of the overall quenching temperature of the steel plate, and meet the process requirements, in order to address the shortcomings of the existing technology.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0006] This utility model relates to a water-proof structure for a thick steel plate quenching machine. The quenching machine is located near the outlet side of the thick plate heat treatment furnace. The quenching machine includes a waterproof curtain, which is located near the outlet side of the thick plate heat treatment furnace. The waterproof curtain includes multiple chains, a first support, and a second support. A high-temperature cloth extending downwards is arranged between the first support and the second support. The multiple chains are respectively connected to different positions of the first support and the second support.

[0007] Both the first and second supports are L-shaped structures, and the vertical surfaces of the first and second supports are fixedly connected by bolt and nut assemblies.

[0008] The upper part of the high-temperature cloth is sandwiched between the vertical plane of the first support and the vertical plane of the second support. When the quenching machine and the thick plate heat treatment furnace are operating, the lower part of the high-temperature cloth is configured to fit the high-temperature thick plate output from the outlet of the thick plate heat treatment furnace.

[0009] The upper end of each chain of the waterproof curtain is connected to the channel steel of the upper part of the quenching machine. Each chain passes through the opening on the vertical surface of the first bracket and the opening on the vertical surface of the second bracket and then connects to the chain hoist of the upper part of the quenching machine.

[0010] The chain hoist is fixedly installed on the quenching machine.

[0011] A thick plate output roller is installed at the outlet position of the aforementioned thick plate heat treatment furnace.

[0012] The quenching machine is equipped with nozzles for cooling the quenching of thick plates.

[0013] The waterproof curtain is installed on the side of the quenching machine near the thick plate heat treatment furnace.

[0014] The high-temperature fabric of the waterproof curtain is made of high-temperature, high-silica glass fiber material.

[0015] The working principle and beneficial effects of this utility model are as follows:

[0016] The anti-seepage structure of the thick steel plate quenching machine described in this utility model is based on the arrangement of the quenching machine and the thick plate heat treatment furnace. The thick plate heat treatment furnace is used to output high-temperature thick plates, and the quenching machine is used to perform water-cooled quenching on the high-temperature thick plates. To prevent seepage water from flowing towards the heat treatment furnace, a waterproof curtain is installed between the quenching machine and the outlet side of the thick plate heat treatment furnace. The waterproof curtain is waterproofed by a high-temperature cloth, which is fixedly connected by a first bracket and a second bracket. The first bracket and the second bracket are fixedly connected and connected to the quenching machine 1 by a chain. During the output and quenching process of the thick plate, the waterproof curtain is kept in contact with the surface of the thick plate. During the quenching process, if water seeps towards the heat treatment furnace, the high-temperature cloth can block the seepage, preventing the seepage water from flowing towards the heat treatment furnace and ensuring the uniformity of the overall quenching temperature of the steel plate, meeting the process requirements. The chain moves through the openings on the vertical surfaces of the first bracket and the second bracket, so the height of the waterproof curtain can be adjusted when the chain is wound or unwound. The state of the waterproof curtain can be flexibly adjusted according to the requirements of different thickness plates, so that the waterproof curtain is fixed at the appropriate height. Attached Figure Description

[0017] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:

[0018] Figure 1 This is a schematic diagram of the main structure of the waterproof curtain of the anti-seepage structure of the thick steel plate quenching machine described in this utility model;

[0019] Figure 2 This is a side view of the waterproof structure of the thick steel plate quenching machine described in this utility model during operation.

[0020] The labels in the attached diagram are as follows: 1. Quenching machine; 2. Thick plate heat treatment furnace; 3. Chain; 4. First support; 5. Second support; 6. High temperature cloth; 7. High temperature thick plate; 8. Channel steel; 9. Chain hoist; 10. Thick plate output roller; 11. Nozzle; 12. Bolt and nut assembly. Detailed Implementation

[0021] The following description, with reference to the accompanying drawings, provides a more detailed explanation of the specific embodiments of this utility model, including the shape and structure of each component, the relative positions and connections between the parts, the functions and working principles of each part:

[0022] As attached Figure 1 Appendix Figure 2As shown, this utility model is a water-proof structure for a thick-plate quenching machine. The quenching machine 1 is located near the outlet side of the thick-plate heat treatment furnace 2. The quenching machine 1 includes a waterproof curtain, which is positioned near the outlet side of the thick-plate heat treatment furnace 2. The waterproof curtain includes multiple chains 3, a first support 4, and a second support 5. A high-temperature cloth 6 extends downward between the first support 4 and the second support 5. The multiple chains 3 connect different positions of the first support 4 and the second support 5. This structure addresses the shortcomings of existing technologies by proposing an improved technical solution. The structure is designed based on the arrangement of the quenching machine 1 and the thick-plate heat treatment furnace 2. The thick-plate heat treatment furnace 2 is used to output high-temperature thick plates 7, and the quenching machine is used to perform water-cooled quenching on the high-temperature thick plates 7. To prevent water seepage towards the heat treatment furnace, a waterproof curtain is installed between the quenching machine 1 and the outlet side of the thick-plate heat treatment furnace 2. The waterproof curtain is waterproofed by a high-temperature cloth 6, which is fixedly connected by a first bracket 4 and a second bracket 5. The first bracket 4 and the second bracket 5 are connected to the quenching machine 1 via a chain 3. During the output and quenching of thick plates, the waterproof curtain is kept in contact with the surface of the thick plate. During quenching, if water seeps towards the heat treatment furnace 2, the high-temperature cloth 6 can block the seepage, preventing it from flowing towards the furnace and ensuring uniform quenching temperature of the steel plate, thus meeting process requirements. The waterproof structure of the thick-gauge steel plate quenching machine described in this invention is simple in structure, effectively blocks water seepage, prevents water from flowing towards the heat treatment furnace, ensures uniform quenching temperature of the steel plate, and meets process requirements.

[0023] Both the first support 4 and the second support 5 are L-shaped structures, and the vertical surfaces of the first support 4 and the second support 5 are fixedly connected by a bolt and nut assembly 12. The first support 4 and the second support 5 are made of angle steel. The upper part of the high-temperature cloth 6 is sandwiched between the vertical surfaces of the first support 4 and the second support 5. When the quenching machine 1 and the thick plate heat treatment furnace 2 are operating, the lower part of the high-temperature cloth 6 is configured to adhere to the high-temperature thick plate 7 output from the outlet of the thick plate heat treatment furnace 2. In this structure, when the bolt and nut assembly 12 passes through the first support 4 and the second support 5, it passes through the upper part of the high-temperature cloth 6. After the bolt and nut assembly 12 connects the first support 4 and the second support 5, the high-temperature cloth 6 is fixed. When the quenching machine and the thick plate heat treatment furnace 2 are operating, after the thick plate heat treatment furnace 2 outputs high temperature, the lower part of the high-temperature cloth 6 adheres to the high-temperature thick plate 7 output from the outlet of the thick plate heat treatment furnace 2, serving a waterproof function.

[0024] Each chain 3 of the waterproof curtain is connected at its upper end to the channel steel 8 on the upper part of the quenching machine. Each chain 3 passes through the openings on the vertical surfaces of the first support 4 and the second support 5, and then connects to the chain hoist 9 on the upper part of the quenching machine. The chain hoist 9 is fixedly installed on the quenching machine. With this structure, the chain moves through the openings on the vertical surfaces of the first support 4 and the second support 5, allowing the height of the waterproof curtain to be adjusted when the chain hoist 9 winds up or unwinds the chain. This allows for flexible adjustment of the waterproof curtain's state according to the requirements of thick plates of different thicknesses, ensuring the waterproof curtain is fixed at a suitable height, guaranteeing contact with the surface of the high-temperature thick plate 7, preventing water seepage towards the heat treatment furnace 2, and meeting process requirements.

[0025] A thick plate output roller 10 is provided at the outlet position of the thick plate heat treatment furnace. Multiple thick plate output rollers can be provided in this structure to output thick plates from the outlet position of the furnace. The thick plates then pass through a quenching machine, which sprays cold water onto the high-temperature thick plates for quenching.

[0026] The quenching machine 1 is equipped with nozzles 11 for quenching and cooling thick plates. The waterproof curtain is positioned on the side of the quenching machine near the thick plate heat treatment furnace 2. In this structure, multiple nozzles are arranged perpendicular to the width of the high-temperature thick plate, forming a straight line to effectively cover the surface of the high-temperature thick plate. The high-temperature cloth 6 of the waterproof curtain is made of high-temperature, high-silica glass fiber material. This high-temperature cloth possesses high-temperature resistance, meeting the requirements for use in high-temperature environments. When the high-temperature cloth needs replacement after a period of use, the bolt and nut assembly can be loosened to separate the first and second supports, allowing the old high-temperature cloth to be removed and replaced with a new one.

[0027] The anti-seepage structure of the thick steel plate quenching machine described in this utility model is designed based on the arrangement of the quenching machine 1 and the thick plate heat treatment furnace 2. The thick plate heat treatment furnace 2 is used to output high-temperature thick plates 7, and the quenching machine is used to perform water-cooled quenching on the high-temperature thick plates 7. To prevent seepage water from flowing towards the heat treatment furnace, a waterproof curtain is installed between the outlet side of the quenching machine 1 and the thick plate heat treatment furnace 2. The waterproof curtain is waterproofed by a high-temperature cloth 6, which is fixedly connected by a first bracket 4 and a second bracket 5. The first bracket 4 and the second bracket 5 are fixedly connected and connected to the quenching machine 1 by a chain 3. During the output and quenching process of the thick plate, the waterproof curtain is kept in contact with the surface of the thick plate. During the quenching process, if water seeps towards the heat treatment furnace 2, the high-temperature cloth 6 can block the seepage water, preventing it from flowing towards the heat treatment furnace and ensuring the uniformity of the overall quenching temperature of the steel plate, thus meeting the process requirements. The chain 3 moves through the openings in the vertical planes of the first bracket 4 and the second bracket 5, allowing the chain hoist 9 to adjust the height of the waterproof curtain when winding or unwinding the chain. This allows for flexible adjustment of the waterproof curtain's position according to the requirements of plates of varying thicknesses, ensuring the curtain is fixed at a suitable height.

[0028] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A water-proof structure for a thick steel plate quenching machine, characterized in that: The quenching machine (1) is located near the outlet side of the thick plate heat treatment furnace (2). The quenching machine (1) includes a waterproof curtain. The waterproof curtain is located near the outlet side of the thick plate heat treatment furnace (2). The waterproof curtain includes multiple chains (3), a first support (4), and a second support (5). A high-temperature cloth (6) extending downward is provided between the first support (4) and the second support (5). The multiple chains (3) are respectively connected to different positions of the first support (4) and the second support (5).

2. The waterproof structure for a thick steel plate quenching machine according to claim 1, characterized in that: The first bracket (4) and the second bracket (5) are both L-shaped structures, and the vertical surfaces of the first bracket (4) and the second bracket (5) are fixedly connected by a bolt and nut assembly (12).

3. The waterproof structure for a thick steel plate quenching machine according to claim 1 or 2, characterized in that: The upper part of the high temperature cloth (6) is sandwiched between the vertical plane of the first support (4) and the vertical plane of the second support (5). When the quenching machine (1) and the thick plate heat treatment furnace (2) are operating, the lower part of the high temperature cloth (6) is configured to fit the high temperature thick plate (7) output from the outlet of the thick plate heat treatment furnace (2).

4. The waterproof structure for a thick steel plate quenching machine according to claim 1 or 2, characterized in that: The upper end of each chain (3) of the waterproof curtain is connected to the channel steel (8) of the upper part of the quenching machine. Each chain (3) passes through the opening in the vertical plane of the first bracket (4) and the opening in the vertical plane of the second bracket (5) and is connected to the chain hoist (9) of the upper part of the quenching machine.

5. The waterproof structure for a thick steel plate quenching machine according to claim 4, characterized in that: The chain hoist (9) is fixedly installed on the quenching machine.

6. The water-proof structure for a thick steel plate quenching machine according to claim 1, characterized in that: The thick plate heat treatment furnace (2) is equipped with a thick plate output roller (10) at the outlet position.

7. The waterproof structure for a thick steel plate quenching machine according to claim 1 or 2, characterized in that: The quenching machine (1) is equipped with nozzles (11) for quenching and cooling of thick plates.

8. The waterproof structure for a thick steel plate quenching machine according to claim 1 or 2, characterized in that: The waterproof curtain is positioned on the side of the quenching machine near the thick plate heat treatment furnace (2).

9. The waterproof structure for a thick steel plate quenching machine according to claim 1 or 2, characterized in that: The high-temperature fabric (6) of the waterproof curtain is made of high-temperature high-silica glass fiber material.

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