Isothermal quenching device for steel strip processing

Abstract

The utility model provides a kind of isothermal quenching equipment for steel belt processing, it is related to steel belt processing technical field, the utility model includes equipment board, four traction rollers are rotatably connected on the equipment board by bearing, four first motors are fixedly connected on the equipment board, the traction roller is rotated by first motor drive, heating chamber is fixedly connected on the equipment board, heating tube is fixedly connected in the heating chamber, heat preservation chamber is fixedly connected on the equipment board, heat preservation plate is fixedly connected in the heat preservation chamber, cooling chamber is fixedly connected on the equipment board, annular cooling pipe is fixedly connected in the cooling chamber, the utility model solves the problem that the surface of steel belt exists impurity, in heating stage, impurity will hinder the uniform transmission of heat, and affect the uniformity of austenitizing, uneven austenitizing will make steel belt form uneven structure after quenching, cause mechanical property unstable, and cause local high hardness, local low hardness problem.

Description

Technical Field

[0001] This utility model relates to the field of steel strip processing technology, and in particular to an isothermal quenching device for steel strip processing. Background Technology

[0002] Steel strip is a basic material widely used in many industrial fields, such as automobile manufacturing, construction, and electronic equipment. In order to meet different industrial needs, steel strip usually needs to undergo various processing treatments. Among them, isothermal quenching is an important heat treatment process. Isothermal quenching can significantly improve the mechanical properties of steel strip, such as increasing its strength and hardness while maintaining good toughness.

[0003] During the early production processes of steel strip, such as rolling and pickling, some impurities may remain on the surface of the steel strip. During storage and transportation, the steel strip may be contaminated by the surrounding environment, such as dust in the warehouse or oil stains during transportation. When impurities are present on the surface of the steel strip, they will hinder the uniform transfer of heat during the heating stage, thus affecting the uniformity of austenitization. Uneven austenitization will cause the steel strip to form an uneven structure after quenching, resulting in unstable mechanical properties and leading to situations where the hardness is high in some areas and low in others. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an isothermal quenching device for steel strip processing.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an isothermal quenching device for steel strip processing, comprising a device plate, four traction rollers rotatably connected to the device plate via bearings, four first motors fixedly connected to the device plate, the traction rollers being driven to rotate by the first motors, a heating chamber fixedly connected to the device plate, a heating tube fixedly connected to the heating chamber, an insulation chamber fixedly connected to the device plate, an insulation board fixedly connected to the insulation chamber, a cooling chamber fixedly connected to the device plate, an annular cooling pipe fixedly connected to the cooling chamber, several nozzles provided on the annular cooling pipe, a liquid pump fixedly connected to the device plate, the output end of the liquid pump being fixedly connected to the annular cooling pipe, a cleaning structure provided on the device plate, the cleaning structure mainly consisting of two fixed plates, both fixedly connected to the device plate, two cleaning brushes rotatably connected to the two fixed plates via bearings, a second motor fixedly connected to one fixed plate, the cleaning brushes being driven to rotate by the second motor, a gear fixedly connected to one end of the cleaning brush, and two gears meshing with each other.

[0006] The effects achieved by the above components are as follows: The output end of the first motor is connected to the traction roller via a reducer and coupling. Starting the first motor drives the traction roller to rotate, passing the steel belt between the two traction rollers. The two traction rollers rotate in opposite directions, driving the steel belt forward. The steel belt enters the heating chamber, where the heating pipes are activated to heat it. Then, it enters the insulation chamber for a period of time, where the insulation board is made of rock wool. Next, it enters the cooling chamber, where a liquid pump is connected to the coolant source. Activating the liquid pump pumps the coolant to the annular cooling pipe and sprays it onto the steel belt through several nozzles for rapid cooling and quenching. Before entering the heating chamber, the steel belt passes through two cleaning brushes. During operation, the output of the second motor is connected to the cleaning brush via a reducer and coupling. Starting the second motor drives one cleaning brush to rotate, which in turn drives a gear to rotate. The two gears drive the two cleaning brushes to rotate synchronously in opposite directions, so that the two cleaning brushes clean the upper and lower surfaces of the steel strip respectively. The direction of rotation is opposite to the direction of the steel strip's forward movement, thus avoiding the problem of impurities on the steel strip surface hindering the uniform transfer of heat during the heating stage and affecting the uniformity of austenitization. Uneven austenitization will cause the steel strip to form an uneven structure after quenching, resulting in unstable mechanical properties and leading to situations where the hardness is high in some areas and low in others.

[0007] Preferably, a protective cover is fixedly connected to both of the fixed plates, and a connecting pipe is fixedly connected to the protective cover. A dust pump is fixedly connected to the equipment plate, and the input end of the dust pump is fixedly connected to the connecting pipe.

[0008] The effect achieved by the above components is: when the dust pump is activated, it can suck up the cleaned debris and prevent the impurities from falling back onto the steel belt.

[0009] Preferably, the output end of the vacuum pump is fixedly connected to a dust collection box, and a number of cleaning plates are fixedly connected in the protective cover.

[0010] The above components achieve the following effects: the dust collection box is used to collect impurities pumped out; when the cleaning brush rotates, the bristles of the cleaning brush will pass through the gaps between multiple cleaning plates, so that the cleaning plates can remove the impurities stuck to the bristles and keep the cleaning brush clean.

[0011] Preferably, the dust collection box is provided with a collection structure, which is mainly composed of a door panel. The door panel is hinged to the dust collection box and has several ventilation slots.

[0012] The aforementioned components enable staff to clean impurities from the dust collection box by opening the door.

[0013] Preferably, the dust collection box is provided with a connecting plate, and a dust collection bag is fixedly connected to the connecting plate.

[0014] The above components achieve the following effects: the dust collection bag is used to collect impurities, and the connecting plate and dust collection bag can be directly removed for easy handling of impurities.

[0015] Preferably, limit plates are fixedly connected to the inner walls of both sides of the door panel, and a gantry frame is fixedly connected to both limit plates. Two locking blocks are provided on the gantry frame, and two locking slots are provided on the connecting plate.

[0016] The effect achieved by the above components is that the connecting plate is clamped above the two limiting plates, and the two locking blocks are inserted into the corresponding slots, which facilitates the installation of the connecting plate and limits its movement.

[0017] Preferably, a sliding rod is slidably inserted on the gantry frame, and a connecting rod is fixedly connected to one end of the sliding rod, and the connecting rod is fixedly connected to the locking block.

[0018] The effect achieved by the above components is that the sliding rod can drive the connecting rod to move, which in turn can drive the two locking blocks to move synchronously.

[0019] Preferably, a spring is fitted onto the slide rod, with one end of the spring fixedly connected to the slide rod and the other end of the spring fixedly connected to the gantry frame.

[0020] The effect achieved by the above components is that when the locking block is inserted into the locking slot, the spring is in a stretched state, so the spring's rebound force acts on the sliding rod, making the limiting more stable.

[0021] Compared with the prior art, the advantages and positive effects of this utility model are as follows: In this utility model, by setting up a cleaning structure, the output end of the first motor is connected to the traction roller through a reducer and a coupling. Starting the first motor can drive the traction roller to rotate, passing the steel belt between two traction rollers. The two traction rollers rotate in opposite directions, which can drive the steel belt forward. The steel belt enters the heating chamber and the heating tube is activated to heat it. Then it enters the insulation chamber for a period of time to keep it warm. The insulation board is made of rock wool. Then it enters the cooling chamber, where the liquid pump is connected to the coolant source. The liquid pump is activated, pumping the coolant to the annular cooling pipe and spraying it onto the steel belt through several nozzles for rapid cooling and quenching. The steel belt then enters the processing chamber. Before entering the heating chamber, the steel strip passes between two cleaning brushes. The output of the second motor is connected to the cleaning brushes via a reducer and coupling. Starting the second motor drives one cleaning brush to rotate, which in turn drives a gear to rotate. The two gears drive the two cleaning brushes to rotate synchronously in opposite directions, so that the two cleaning brushes clean the upper and lower surfaces of the steel strip respectively. The direction of rotation is opposite to the direction of the steel strip's movement, thus avoiding the problem of impurities on the steel strip surface hindering the uniform transfer of heat during the heating stage and affecting the uniformity of austenitization. Uneven austenitization will cause the steel strip to form an uneven structure after quenching, resulting in unstable mechanical properties and leading to situations where the hardness is high in some areas and low in others. Attached Figure Description

[0022] Figure 1 This utility model provides a three-dimensional structural schematic diagram of an isothermal quenching equipment for steel strip processing;

[0023] Figure 2 This utility model presents a three-dimensional structural schematic diagram of an isothermal quenching equipment for steel strip processing from another perspective.

[0024] Figure 3 This utility model provides a partial schematic diagram of the cleaning structure of an isothermal quenching equipment for steel strip processing;

[0025] Figure 4 This utility model provides another schematic diagram of the cleaning structure of an isothermal quenching equipment for steel strip processing;

[0026] Figure 5 This utility model presents a partial schematic diagram of the collection structure of an isothermal quenching equipment for steel strip processing.

[0027] Legend: 1. Equipment plate; 2. Traction roller; 3. First motor; 4. Heating chamber; 5. Heating pipe; 6. Insulation chamber; 7. Insulation board; 8. Cleaning structure; 81. Fixing plate; 82. Cleaning brush; 83. Second motor; 84. Gear; 85. Protective cover; 86. Connecting pipe; 87. Dust pump; 88. Dust collection box; 89. Cleaning plate; 90. Collection structure; 91. Door panel; 92. Ventilation slot; 93. Connecting plate; 94. Dust collection bag; 95. Limiting plate; 96. Gantry frame; 97. Slide rod; 98. Connecting rod; 99. Locking block; 910. Locking slot; 911. Spring; 10. Cooling chamber; 11. Annular cooling pipe; 12. Liquid pump. Detailed Implementation

[0028] Example 1, such as Figure 1 and Figure 2 As shown, an isothermal quenching device for steel strip processing includes a device plate 1, four traction rollers 2 rotatably connected to the device plate 1 via bearings, four first motors 3 fixedly connected to the device plate 1, the traction rollers 2 being driven to rotate by the first motors 3, a heating chamber 4 fixedly connected to the device plate 1, a heating pipe 5 fixedly connected to the heating chamber 4, a heat preservation chamber 6 fixedly connected to the device plate 1, a heat preservation plate 7 fixedly connected to the heat preservation chamber 6, a cooling chamber 10 fixedly connected to the device plate 1, an annular cooling pipe 11 fixedly connected to the cooling chamber 10, a plurality of nozzles being provided on the annular cooling pipe 11, and a liquid pump 12 fixedly connected to the device plate 1, the output end of the liquid pump 12 being fixedly connected to the annular cooling pipe 11.

[0029] Reference Figure 3 and Figure 4The equipment plate 1 is equipped with a cleaning structure 8, which mainly consists of two fixed plates 81. Both fixed plates 81 are fixedly connected to the equipment plate 1. Two cleaning brushes 82 are rotatably connected to the two fixed plates 81 through bearings. A second motor 83 is fixedly connected to one of the fixed plates 81. The cleaning brushes 82 are driven to rotate by the second motor 83. A gear 84 is fixedly connected to one end of the cleaning brushes 82. The two gears 84 are meshed with each other. The output end of the first motor 3 is connected to the traction roller 2 through a reducer and a coupling. Starting the first motor 3 can drive the traction roller 2 to rotate, passing the steel belt between the two traction rollers 2. Two traction rollers 2 rotate in opposite directions to drive the steel belt forward. The steel belt enters the heating chamber 4 and the heating pipe 5 is activated to heat it. Then it enters the insulation chamber 6 for a period of time to maintain its temperature. The insulation board 7 is made of rock wool. Then it enters the cooling chamber 10. The liquid pump 12 is connected to the coolant source and is activated. The liquid pump 12 pumps the coolant to the annular cooling pipe 11 and sprays it onto the steel belt through several nozzles for rapid cooling and quenching. Before entering the heating chamber 4, the steel belt passes between two cleaning brushes 82. The output end of the second motor 83 is connected to the cleaning brushes 82 through a reducer and coupling. Activating the second motor 83 can drive one The rotation of a cleaning brush 82 drives a gear 84 to rotate, and the two gears 84 drive the two cleaning brushes 82 to rotate synchronously in opposite directions. This allows the two cleaning brushes 82 to clean the upper and lower surfaces of the steel strip respectively, and the direction of rotation is opposite to the direction of the steel strip's movement. This avoids the problem of impurities on the steel strip surface hindering the uniform transfer of heat during the heating stage, which would affect the uniformity of austenitization. Uneven austenitization would cause the steel strip to form an uneven structure after quenching, resulting in unstable mechanical properties and leading to situations where the hardness is high in some areas and low in others. A protective cover 85 is fixedly connected to both fixing plates 81. A connecting pipe 86 is fixedly connected to the protective cover 85, and a dust pump 87 is fixedly connected to the equipment plate 1. The input end of the dust pump 87 is fixedly connected to the connecting pipe 86. When the dust pump 87 is started, it can suck up the cleaned debris to prevent the debris from falling back onto the steel belt. The output end of the dust pump 87 is fixedly connected to a dust collection box 88. Several cleaning plates 89 are fixedly connected in the protective cover 85. The dust collection box 88 is used to collect the pumped debris. When the cleaning brush 82 rotates, the bristles of the cleaning brush 82 will pass through the gaps between the multiple cleaning plates 89, so that the cleaning plates 89 can remove the debris stuck to the bristles and keep the cleaning brush 82 clean.

[0030] Reference Figure 1 , Figure 4 and Figure 5The dust collection box 88 is equipped with a collection structure 9, which mainly consists of a door panel 91. The door panel 91 is hinged to the dust collection box 88 and has several ventilation slots 92. Workers can open the door panel 91 to clean the impurities in the dust collection box 88. A connecting plate 93 is provided in the dust collection box 88, and a dust collection bag 94 is fixedly connected to the connecting plate 93. The dust collection bag 94 is used to collect impurities. The connecting plate 93 and the dust collection bag 94 can be directly removed for easy handling of impurities. Limiting plates 95 are fixedly connected to the inner walls on both sides of the door panel 91. A gantry frame 96 is fixedly connected to the two limiting plates 95. The gantry frame 96 is equipped with two locking blocks 99. The connecting plate 93 has two locking slots 910. The connecting plate 93 is positioned above the two limiting plates 95, and the two locking blocks 99 are inserted into the corresponding slots 910. This facilitates the installation and limiting of the connecting plate 93. A sliding rod 97 is slidably inserted on the gantry frame 96. One end of the sliding rod 97 is fixedly connected to a connecting rod 98, which is fixedly connected to the locking block 99. Sliding the sliding rod 97 can drive the connecting rod 98 to move, which in turn can drive the two locking blocks 99 to move synchronously. A spring 911 is sleeved on the sliding rod 97. One end of the spring 911 is fixedly connected to the sliding rod 97, and the other end of the spring 911 is fixedly connected to the gantry frame 96. When the locking block 99 is inserted into the slot 910, the spring 911 is in a stretched state. Therefore, the rebound force of the spring 911 acts on the sliding rod 97, making the limiting more stable.

[0031] Working principle: The output end of the first motor 3 is connected to the traction roller 2 via a reducer and coupling. Starting the first motor 3 drives the traction roller 2 to rotate, passing the steel belt between the two traction rollers 2. The two traction rollers 2 rotate in opposite directions, driving the steel belt forward. The steel belt enters the heating chamber 4, where the heating pipe 5 is activated to heat it. Then it enters the insulation chamber 6 for a period of time to maintain its temperature. The insulation board 7 is made of rock wool. Then it enters the cooling chamber 10, where the liquid pump 12 is connected to the coolant source. Starting the liquid pump 12 pumps the coolant to the annular cooling pipe 11 and sprays it onto the steel belt through several nozzles for rapid cooling. Rapid cooling achieves quenching. Before entering the heating chamber 4, the steel strip passes between two cleaning brushes 82. The output of the second motor 83 is connected to the cleaning brushes 82 via a reducer and coupling. Starting the second motor 83 drives one cleaning brush 82 to rotate, which in turn drives a gear 84 to rotate. The two gears 84 drive the two cleaning brushes 82 to rotate synchronously in opposite directions, so that the two cleaning brushes 82 clean the upper and lower surfaces of the steel strip respectively, and the rotation direction is opposite to the forward direction of the steel strip. This avoids impurities on the steel strip surface from hindering the uniform heat transfer during the heating stage and affecting the austenitizing effect. Uniform austenitization can cause uneven microstructure in the steel strip after quenching, leading to unstable mechanical properties and resulting in localized high and low hardness. Activating the dust pump 87 removes the cleaned debris, preventing it from falling back onto the steel strip. The dust collection box 88 collects the pumped debris. When the cleaning brush 82 rotates, its bristles pass through the gaps between multiple cleaning plates 89, allowing the cleaning plates 89 to remove debris adhering to the bristles and keep the cleaning brush 82 clean. Workers can access the dust collection box 88 by opening the door panel 91. The impurities in the container are cleaned, and the dust bag 94 is used to collect the impurities. The connecting plate 93 and the dust bag 94 can be removed directly to facilitate the processing of impurities. The connecting plate 93 is clamped above the two limiting plates 95, and the two locking blocks 99 are inserted into the corresponding slots 910 to facilitate the installation of the connecting plate 93 and limit its movement. The sliding rod 97 can drive the connecting rod 98 to move, which in turn can drive the two locking blocks 99 to move synchronously. When the locking block 99 is clamped into the slot 910, the spring 911 is in a stretched state. Therefore, the rebound force of the spring 911 acts on the sliding rod 97, making the limiting more stable.

[0032] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may use the disclosed technical content to make changes or modifications to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model, without departing from the scope of the utility model's technical solution, still fall within the protection scope of this utility model's technical solution. In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood through specific circumstances.

Claims

1. An isothermal quenching device for steel strip processing, comprising a device plate (1), characterized in that: Four traction rollers (2) are rotatably connected to the equipment plate (1) via bearings. Four first motors (3) are fixedly connected to the equipment plate (1). The traction rollers (2) are driven to rotate by the first motors (3). A heating chamber (4) is fixedly connected to the equipment plate (1). A heating tube (5) is fixedly connected to the heating chamber (4). An insulation chamber (6) is fixedly connected to the equipment plate (1). An insulation board (7) is fixedly connected to the insulation chamber (6). A cooling chamber (10) is fixedly connected to the equipment plate (1). An annular cooling pipe (11) is fixedly connected to the cooling chamber (10). Several nozzles are provided on the annular cooling pipe (11). A liquid pump (12) is fixedly connected to the upper part, and the output end of the liquid pump (12) is fixedly connected to the annular cooling pipe (11). A cleaning structure (8) is provided on the equipment plate (1). The cleaning structure (8) is mainly composed of two fixed plates (81). The two fixed plates (81) are fixedly connected to the equipment plate (1). Two cleaning brushes (82) are rotatably connected to the two fixed plates (81) through bearings. A second motor (83) is fixedly connected to one of the fixed plates (81). The cleaning brushes (82) are driven to rotate by the second motor (83). A gear (84) is fixedly connected to one end of the cleaning brushes (82). The two gears (84) are meshed with each other.

2. The isothermal quenching equipment for steel strip processing according to claim 1, characterized in that: A protective cover (85) is fixedly connected to both of the fixed plates (81), and a connecting pipe (86) is fixedly connected to the protective cover (85). A vacuum pump (87) is fixedly connected to the equipment plate (1), and the input end of the vacuum pump (87) is fixedly connected to the connecting pipe (86).

3. The isothermal quenching equipment for steel strip processing according to claim 2, characterized in that: The output end of the vacuum pump (87) is fixedly connected to a dust collection box (88), and a number of cleaning plates (89) are fixedly connected in the protective cover (85).

4. The isothermal quenching equipment for steel strip processing according to claim 3, characterized in that: The dust collection box (88) is provided with a collection structure (9), which is mainly composed of a door panel (91). The door panel (91) is hinged to the dust collection box (88), and several ventilation slots (92) are provided on the door panel (91).

5. The isothermal quenching equipment for steel strip processing according to claim 4, characterized in that: The dust collection box (88) is provided with a connecting plate (93), and a dust collection bag (94) is fixedly connected to the connecting plate (93).

6. The isothermal quenching equipment for steel strip processing according to claim 5, characterized in that: Limiting plates (95) are fixedly connected to the inner walls on both sides of the door panel (91), and a gantry frame (96) is fixedly connected to both limiting plates (95). Two locking blocks (99) are provided on the gantry frame (96), and two locking slots (910) are opened on the connecting plate (93).

7. The isothermal quenching equipment for steel strip processing according to claim 6, characterized in that: A sliding rod (97) is slidably inserted on the gantry frame (96), and a connecting rod (98) is fixedly connected to one end of the sliding rod (97). The connecting rod (98) is fixedly connected to the locking block (99).

8. The isothermal quenching equipment for steel strip processing according to claim 7, characterized in that: A spring (911) is fitted on the slide rod (97). One end of the spring (911) is fixedly connected to the slide rod (97), and the other end of the spring (911) is fixedly connected to the gantry frame (96).

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