Cooling mechanism for heat treatment cooling of steel strip

Abstract

The utility model provides a cooling mechanism for steel band heat treatment cooling, including lower layer cooling assembly and a plurality of upper layer cooling assembly, lower layer cooling assembly includes lower cooling chamber, and the lower cooling chamber upper end surface is fixed with lower cooling roller along steel band conveying direction, a plurality of upper layer cooling assembly is sequentially arranged in lower cooling chamber top, every upper cooling assembly includes upper cooling chamber, and the upper cooling chamber lower end surface is fixed with upper cooling roller in the position of lower cooling roller, and every upper layer cooling chamber adjusts the height of lower end surface relative to lower cooling chamber upper end surface under the action of micrometer top silk to drive upper cooling roller lower end surface to be inclined. The utility model discloses utilize upper layer cooling assembly effective segmentation adapt to steel band plane, can alone as needed adjust the cooling surface angle of upper cooling roller, has adapted the possible inclination, the lifting of steel band, the arch, has effectively guaranteed that upper cooling roller and steel band contact well, and the cooling is even, guarantees steel band processing quality.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment equipment technology, and in particular to a cooling mechanism for cooling steel strips during heat treatment. Background Technology

[0002] In the production of razor blades, because the razor disc needs to have high hardness and high wear resistance, and the blade also needs to be able to effectively withstand impact and bending stress during cutting, ensure geometric accuracy and avoid brittle fracture, the steel strip used to make the blades often needs to undergo processing.

[0003] In the processing of steel strips used to manufacture razor blades, a common method is to quench them to form a martensitic structure. The steel strip is first heated to a state of austenite, and then rapidly cooled (quenched) to inhibit the decomposition of austenite into pearlite or bainite, directly transforming it into hard and brittle martensite.

[0004] Therefore, after heat treatment, the steel strip is typically conveyed to a cooling mechanism for further processing using a conveyor system. Since razor blade production is usually a large-scale, continuous operation, contact cooling, i.e., roller cooling, is preferred. Water-cooled furnace rollers directly contact the steel strip, achieving cooling through heat conduction. Cooling water circulates inside the rollers, ensuring a uniform surface temperature and preventing localized overheating. This cooling method utilizes direct contact for heat transfer, resulting in high cooling efficiency and suitability for applications requiring rapid cooling. However, because the steel strip surface cannot remain perfectly level, it may exhibit tilting, slight warping, or arching during transport. When roller cooling is used, the tilting, warping, or arching of the steel strip itself prevents complete contact between the steel strip surface and the furnace rollers, leading to uneven surface cooling and affecting the cooling quality of the steel strip during heat treatment.

[0005] For furnace rollers used for cooling, the contact between the rollers and the steel strip needs to be sufficient for effective heat dissipation and cooling, while the contact pressure cannot be too high. Therefore, how to adjust the position of the furnace rollers has become a key design focus. In this regard, those skilled in the art urgently need to further improve the structure of existing contact cooling mechanisms to better ensure cooling quality. Utility Model Content

[0006] The technical problem to be solved by this utility model is: in order to overcome the shortcomings of the prior art, this utility model provides a cooling mechanism for cooling steel strip heat treatment, which can adjust the angle of the cooling surface of the upper cooling roller as needed, and the segmentation is convenient to adapt to the steel strip plane, effectively ensuring good contact and uniform cooling between the upper cooling roller and the steel strip.

[0007] The technical solution adopted by this utility model to solve its technical problem is as follows: a cooling mechanism for cooling steel strip heat treatment, which is set at the rear end of the heat treatment device. The heat-treated steel strip is conveyed into the cooling mechanism through a conveying mechanism. The cooling mechanism includes a lower cooling assembly and several upper cooling assemblies. The lower cooling assembly includes a lower cooling chamber, which has a lower cooling cavity. The lower cooling chamber wall is provided with a lower liquid inlet pipe and a lower liquid outlet pipe communicating with the lower cooling cavity. A lower cooling roller is fixed on the upper end face of the lower cooling chamber along the steel strip conveying direction. Several upper cooling assemblies are arranged sequentially in the lower cooling chamber along the steel strip conveying direction. Above; each upper cooling assembly includes an upper cooling chamber, which has an upper cooling cavity. The upper cooling chamber wall is provided with an upper liquid inlet pipe and an upper liquid outlet pipe that communicate with the upper cooling cavity. The lower end face of the upper cooling chamber is fixed with an upper cooling roller at a position corresponding to the lower cooling roller. Each upper cooling assembly also includes at least three micrometer set screws. The micrometer set screws are installed on the upper cooling chamber, and the set screw rod passes through the lower end face of the upper cooling chamber and abuts against the upper end face of the lower cooling chamber. Under the action of the micrometer set screws, the lower end face of each upper cooling chamber is adjusted relative to the upper end face of the lower cooling chamber, thereby causing the lower end face of the upper cooling roller to tilt.

[0008] In the above scheme, to address the potential unevenness of the steel strip after heat treatment, several upper cooling assemblies are designed along the steel strip conveying direction, allowing for segmented cooling of the steel strip. In each upper cooling assembly, due to the design of the micrometer set screw, a plane is defined by three points. By adjusting the lifting height of the micrometer set screw's rod, the tilt direction of the lower end face of the upper cooling chamber can be adjusted accordingly, thereby driving the upper cooling roller to finely adjust its tilt direction to adapt to the slope of the steel strip surface.

[0009] Furthermore, a lateral adjustment mechanism is provided in front of the upper cooling assembly at the inlet end to drive the upper cooling assembly to move along the steel belt conveying direction.

[0010] Furthermore, the lateral adjustment mechanism includes a lateral positioning seat and a lateral tightening bolt. The lateral positioning seat is fixed on the upper end face of the upper cooling chamber, and a threaded hole is provided on the lateral positioning seat. The lateral tightening bolt is threadedly fitted into the threaded hole, and one end of the lateral tightening bolt is connected to the upper cooling chamber located at the inlet end. When the lateral tightening bolt is screwed relative to the threaded hole, it causes the upper cooling chamber at the inlet end to move along the steel belt conveying direction.

[0011] Furthermore, each upper cooling assembly includes three micrometer set screws. Along the steel strip transport direction, one micrometer set screw is positioned close to the side of the steel strip, while the other two are positioned away from the steel strip, with the line connecting these two micrometer set screws parallel to the steel strip transport direction. This rational layout of the micrometer set screws determines the cooling surface of the upper cooling assembly. This cooling surface can be finely adjusted according to the inclination of the steel strip surface; the adjustment process only requires turning the corresponding micrometer set screw, making the operation convenient and quick.

[0012] Furthermore, the upper cooling chamber includes an upper cooling cover and an upper cooling seat. The lower end face of the upper cooling cover is concave, and the upper end face of the upper cooling seat is concave. The two concave surfaces are sealed together to form the upper cooling chamber. The micrometer set screw is fixed on the upper cooling cover, and the set rod passes through the side wall of the upper cooling cover and then continues to pass through the side wall of the upper cooling seat.

[0013] Preferably, the upper cooling cover and the upper cooling seat are fixed together by bolts, and the sealing surfaces of the upper cooling cover and the upper cooling seat are sealed together by a sealing ring.

[0014] Furthermore, guide blocks are fixed on the upper surface of the lower cooling chamber along the steel strip conveying direction, corresponding to both sides of the upper cooling roller. These guide blocks effectively limit the steel strip within the cooling range of the lower cooling roller during conveying, reducing the risk of steel strip deviation.

[0015] The beneficial effects of this utility model are that the cooling mechanism for heat treatment of steel strip provided by this utility model has a reasonable structural design. The lower cooling assembly provides cooling and temperature reduction treatment to the lower surface of the steel strip through contact cooling. The upper layer is designed with several cooling assemblies in sections, and the cooling surface angle of each upper cooling assembly can be adjusted individually as needed. This effectively adapts to the plane of the steel strip in sections, and adapts to the possible tilting, warping, and arching of the steel strip. It effectively ensures good contact between the upper cooling roller and the steel strip, uniform cooling, and guarantees the quality of steel strip treatment. Attached Figure Description

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0017] Figure 1 This is the front view of this utility model.

[0018] Figure 2 This is a perspective view of the present invention.

[0019] Figure 3 This is a side view of the present invention.

[0020] Figure 4 yes Figure 3 Sectional view of AA.

[0021] Figure 5 yes Figure 3 A cross-sectional view of BB.

[0022] Figure 6 yes Figure 3 A sectional view of CC.

[0023] In the figure: 1. Lateral adjustment mechanism; 11. Lateral positioning seat; 12. Lateral tightening bolt; 2. Micrometer set screw; 3. Upper cooling assembly; 31. Upper liquid inlet pipe; 32. Upper liquid outlet pipe; 33. Upper cooling cover; 34. Upper cooling seat; 35. Upper cooling chamber; 36. Sealing ring; 4. Lower cooling assembly; 41. Lower liquid inlet pipe; 42. Lower liquid outlet pipe; 43. Lower cooling chamber; 44. Lower cooling roller; 45. Guide block; 5. Steel strip. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention. Therefore, they only show the components relevant to the present invention. Orientations and references (e.g., up, down, left, right, etc.) are only used to aid in the description of the features in the drawings. Therefore, the following specific embodiments are not intended to be restrictive, and the scope of the claimed subject matter is defined solely by the appended claims and their equivalents.

[0025] Example 1: like Figures 1 to 6 The cooling mechanism shown is an embodiment of this utility model for cooling steel strip after heat treatment. This cooling mechanism is located at the rear end of the heat treatment device. The heat-treated steel strip 5 is conveyed into the cooling mechanism via a conveying mechanism, and the cooling mechanism performs contact cooling on the steel strip 5.

[0026] like Figure 1 and Figure 2 As shown, the cooling mechanism includes a lower cooling assembly 4 and two upper cooling assemblies 3. The two upper cooling assemblies 3 are arranged sequentially on the lower cooling assembly 4 along the conveying direction of the steel strip 5, and are used to cool the steel strip 5 in sections. In the actual production assembly of the cooling mechanism, the number of upper cooling assemblies 3 can be reasonably arranged according to the cooling requirements, and they can be arranged sequentially.

[0027] Specifically, the lower cooling assembly 4 includes a lower cooling chamber 43, which contains a lower cooling cavity. The walls of the lower cooling chamber 43 are respectively provided with a lower inlet pipe 41 and a lower outlet pipe 42, both communicating with the lower cooling cavity. The lower inlet pipe 41 and the lower outlet pipe 42 are connected to an external coolant circulation mechanism, which supplies coolant for cooling. This coolant circulation mechanism is commercially available equipment and will not be described in detail here.

[0028] A lower cooling roller 44 is fixed to the upper end face of the lower cooling chamber 43 along the conveying direction of the steel strip 5. After heat treatment, the steel strip 5 is conveyed to the lower cooling assembly 4 by a conveying device, cooled by the cooling mechanism, and then conveyed to the next processing station. Guide blocks 45 are fixed to both sides of the upper cooling roller along the conveying direction of the steel strip 5 on the upper end face of the lower cooling chamber 43. Through the guide blocks 45, the steel strip 5 can be effectively limited from both sides of the steel strip 5 within the cooling range of the lower cooling roller 44 during conveying, reducing the risk of the steel strip 5 shifting during conveying.

[0029] Each upper cooling assembly includes an upper cooling chamber, which contains an upper cooling cavity 35. In this embodiment, the upper cooling chamber includes an upper cooling cover 33 and an upper cooling seat 34. The lower end face of the upper cooling cover 33 is concave, and the upper end face of the upper cooling seat 34 is concave. The concave surfaces of the two are sealed together to form the upper cooling chamber, and the concave cavity forms the upper cooling cavity 35. During connection, the upper cooling cover 33 and the upper cooling seat 34 are locked together by bolts, and their sealing surfaces are sealed together by a sealing ring 36. The upper cooling chamber wall is provided with an upper inlet pipe 31 and an upper outlet pipe 32 that communicate with the upper cooling cavity 35. The upper inlet pipe 31 and the upper outlet pipe 32 are also externally connected to a coolant circulation mechanism, which provides coolant circulation. An upper cooling roller is fixed at a position corresponding to the lower cooling roller 44 on the lower end face of the upper cooling chamber.

[0030] The tilt angle of the cooling surface of the upper cooling roller is adjusted by three micrometer set screws 2 installed on the upper cooling chamber. Specifically, each upper cooling assembly 3 includes three micrometer set screws 2, which are fixed on the upper cooling cover 33, and the push rod passes through the side wall of the upper cooling cover 33 and then continues through the side wall of the upper cooling seat 34.

[0031] In the distribution of the micrometer set screws 2, along the transport direction of the steel belt 5, one micrometer set screw 2 is located close to the side of the steel belt 5, while the other two micrometer set screws 2 are located away from the steel belt 5, and the line connecting these two micrometer set screws 2 is parallel to the transport direction of the steel belt 5. The direction of movement of the push rod of the micrometer set screw 2 is a vertical direction perpendicular to the horizontal plane.

[0032] The micrometer set screw 2 is installed on the upper cooling chamber, and the push rod of the micrometer set screw 2 passes through the lower end face of the upper cooling chamber and abuts against the upper end face of the lower cooling chamber 43. Under the action of the micrometer set screw 2, the lower end face of each upper cooling chamber is adjusted relative to the upper end face of the lower cooling chamber 43, thereby causing the lower end face of the upper cooling roller to tilt. The cooling surface of the upper cooling assembly is determined by the three points of the micrometer set screw 2. This cooling surface can be finely adjusted according to the tilt of the steel strip 5 surface. The adjustment process only requires turning the corresponding micrometer set screw 2, which is convenient and quick to operate.

[0033] This cooling mechanism for heat-treated steel strip is rationally designed. The lower cooling assembly 4 provides cooling to the lower surface of the steel strip 5 through contact cooling. To address potential unevenness issues in the steel strip 5 after heat treatment, the upper layer is designed with several segmented cooling assemblies, allowing for segmented cooling of the steel strip 5 along its conveying direction. In each upper cooling assembly 3, the micrometer set screw 2 is designed to define a plane using three points. By adjusting the lifting height of the micrometer set screw 2, the tilt direction of the lower end face of the upper cooling chamber can be adjusted accordingly. This, in turn, drives the upper cooling roller to finely adjust its tilt direction, adapting to the surface slope of the steel strip 5 and accommodating potential tilting, warping, or arching. This effectively ensures good contact between the upper cooling roller and the steel strip 5, resulting in uniform cooling and guaranteeing the quality of the steel strip 5 treatment.

[0034] Example 2: like Figures 1 to 6 The cooling mechanism shown is a second embodiment of this utility model for cooling steel strip heat treatment. Based on the first embodiment, the second embodiment adds lateral adjustment to the upper cooling assembly 3 at the inlet end.

[0035] Specifically, such as Figure 1 and Figure 2 As shown, a lateral adjustment mechanism 1 is provided in front of the upper cooling assembly 3 at the inlet end, which drives the upper cooling assembly 3 to move along the conveying direction of the steel belt 5. The lateral adjustment mechanism 1 includes a lateral positioning seat 11 and a lateral tightening bolt 12. The lateral positioning seat 11 is fixed on the upper end face of the upper cooling chamber, and a threaded hole is provided on the lateral positioning seat 11. The lateral tightening bolt 12 is threadedly fitted in the threaded hole, and one end of the lateral tightening bolt 12 is connected to the upper cooling chamber at the inlet end. When the lateral tightening bolt 12 is screwed relative to the threaded hole, it drives the upper cooling chamber at the inlet end to move along the conveying direction of the steel belt 5.

[0036] In practical design, depending on actual needs, when only unidirectional restriction of the upper cooling assembly 3 at the inlet end is required, the end face of the lateral tightening bolt 12 abuts against the upper cooling chamber, and the two can be detached. The end face of the lateral tightening bolt 12 is the closest position of the upper cooling chamber to the inlet end. However, when bidirectional adjustment of the upper cooling assembly 3 at the inlet end is required, the lateral tightening bolt 12 needs to be able to extend into the chamber wall of the upper cooling chamber and be axially limited and connected to the solid wall. The displacement of the lateral tightening bolt 12 relative to the lateral positioning seat 11 drives the upper cooling chamber to move along the conveying direction of the steel belt 5.

[0037] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A cooling mechanism for cooling steel strip after heat treatment, disposed at the rear end of a heat treatment device, wherein the heat-treated steel strip is conveyed into the cooling mechanism via a conveying mechanism, characterized in that: Includes a lower cooling assembly and several upper cooling assemblies; The lower cooling assembly includes a lower cooling chamber, which has a lower cooling cavity. The lower cooling chamber wall is provided with a lower inlet pipe and a lower outlet pipe that communicate with the lower cooling cavity. A lower cooling roller is fixed on the upper end face of the lower cooling chamber along the steel belt conveying direction. Several upper cooling assemblies are arranged sequentially above the lower cooling chamber along the steel belt conveying direction; each upper cooling assembly includes an upper cooling chamber, which has an upper cooling cavity. The upper cooling chamber wall is provided with an upper liquid inlet pipe and an upper liquid outlet pipe that communicate with the upper cooling cavity. The lower end face of the upper cooling chamber is fixed with an upper cooling roller at a position corresponding to the lower cooling roller. Each upper cooling assembly also includes at least three micrometer set screws, which are installed on the upper cooling chamber. The set screw rods of the micrometer set screws pass through the lower end face of the upper cooling chamber and abut against the upper end face of the lower cooling chamber. Under the action of the micrometer set screws, the lower end face of each upper cooling chamber is adjusted relative to the upper end face of the lower cooling chamber, thereby causing the lower end face of the upper cooling roller to tilt.

2. The cooling mechanism for cooling steel strip heat treatment as described in claim 1, characterized in that: A lateral adjustment mechanism is provided in front of the upper cooling assembly at the inlet end to drive the upper cooling assembly to move along the steel belt conveying direction.

3. The cooling mechanism for cooling steel strip heat treatment as described in claim 2, characterized in that: The lateral adjustment mechanism includes a lateral positioning seat and a lateral tightening bolt. The lateral positioning seat is fixed on the upper end face of the upper cooling chamber and has a threaded hole. The lateral tightening bolt is threadedly fitted into the threaded hole, and one end of the lateral tightening bolt is connected to the upper cooling chamber located at the inlet end. When the lateral tightening bolt is screwed relative to the threaded hole, it causes the upper cooling chamber at the inlet end to move along the steel belt conveying direction.

4. The cooling mechanism for cooling steel strip heat treatment as described in claim 1, characterized in that: Each upper cooling assembly includes three micrometer set screws along the steel belt transport direction. One micrometer set screw is located on the side close to the steel belt, while the other two micrometer set screws are located away from the steel belt, and the line connecting the two micrometer set screws is parallel to the steel belt transport direction.

5. The cooling mechanism for cooling steel strip heat treatment as described in claim 1, characterized in that: The upper cooling chamber includes an upper cooling cover and an upper cooling seat. The lower end face of the upper cooling cover is concave, and the upper end face of the upper cooling seat is concave. The concave surfaces of the two are sealed together to form the upper cooling chamber. The micrometer set screw is fixed on the upper cooling cover, and the set rod passes through the side wall of the upper cooling cover and then continues to pass through the side wall of the upper cooling seat.

6. The cooling mechanism for cooling steel strip heat treatment as described in claim 5, characterized in that: The upper cooling cover and the upper cooling seat are fixed together by bolts, and the sealing surfaces of the upper cooling cover and the upper cooling seat are sealed together by a sealing ring.

7. The cooling mechanism for cooling steel strip heat treatment as described in claim 1, characterized in that: Guide blocks are fixed on the upper end face of the lower cooling chamber along the steel belt conveying direction, corresponding to both sides of the upper cooling roller.

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