Heat preservation cover for hot rolling and rough rolling
By designing the insulation cover structure of hinges, top hangers, side hangers, support frames and slides in the hot-rolled rough rolling area, combining the insulation blocks and anti-collision steel plates with high-temperature resistant stainless steel plates covering the aluminum silicate plates, the existing solution is solved The insulation cover cannot effectively reduce the problem of slab temperature loss and equipment impact, achieving more efficient insulation effect and lower risk of equipment damage.
Patent Information
- Application Number
- CN202421015400.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-10
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-05-10
AI Technical Summary
The insulation cover in the existing rough rolling area cannot effectively reduce the temperature loss of the slab, and impact problems are prone to occur when the slab is curled and bent, causing equipment damage and increased production costs.
A thermal insulation cover structure including hinges, top hangers, side hangers, support frames, slides and insulation blocks is designed. By hanging insulation blocks and slides, anti-collision steel plates are added to buffer the impact of the slabs, and the resistance to the resistance of the High-temperature stainless steel plates coat the insulation blocks of aluminum silicate plates to improve the insulation effect and reduce equipment damage.
It effectively reduces the temperature loss of the slab, improves the insulation effect, reduces the impact force of the slab on the insulation cover, facilitates online replacement of the insulation block, reduces the risk of equipment damage, and improves the insulation uniformity of the edges of the slab.
Smart Images
Figure CN222198316U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of rough rolling, in particular to a heat preservation cover used for hot rough rolling. Background Art
[0002] Currently, the roughing area of conventional hot rolling mills has a long rolling line, resulting in a significant temperature drop in the slabs. For this reason, some lines have installed insulation covers. To improve the insulation performance of the covers, the distance between the lower surface of the covers and the upper surface of the rollers has been greatly reduced (300-500mm). However, due to factors such as the temperature difference between the upper and lower surfaces of the slabs, the roughing mill elevation, and other factors, the slabs are prone to warping and bending during rolling in the roughing mill. This can cause significant damage to the lower surface of the insulation cover and even to the main body of the slab. In severe cases, the slabs can become stuck in the insulation cover, resulting in significant losses in production and equipment costs. Therefore, the existing insulation covers in the roughing area cannot meet production needs.
[0003] In the prior art, patent application number: 202111413329.7 discloses a method and device for controlling the temperature difference on both sides of the strip. By setting the opposite sides of the rough rolling insulation cover body a and the rough rolling insulation cover body b to be fixedly connected to the left and right sides of the two connecting plates respectively, the insulation cover can be opened on one side, and the opening support of the insulation cover is realized by the cylinder. The insulation cover with this structure still has the problem of colliding with the insulation cover body when the slab has warping or side bending problems. Summary of the Invention
[0004] To overcome the shortcomings of the prior art, the present invention aims to provide a heat preservation cover for hot and rough rolling, which improves the heat preservation effect of the heat preservation cover and greatly reduces the temperature loss of the slab. At the same time, it can reduce the impact force of the slab on the lower surface and body of the heat preservation cover.
[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions:
[0006] A heat preservation cover for hot rolling and rough rolling includes a hinge, a top hanger, a side hanger, a support frame, a slide, and a heat preservation block. The support frame is fixed on a roller frame. The top hanger and the side hanger are arranged in a U shape in the support frame. The top hanger is suspended on the top of the support frame through a hinge. The side of the support frame is fixedly connected to the slide. The side hanger is slidably connected to the slide. The heat preservation block is fixedly connected to the top hanger and the side hanger.
[0007] An anti-collision steel plate is fixedly connected to the support frame, and the bottom of the anti-collision steel plate is lower than the lower edge of the insulation block fixed to the top hanging rack.
[0008] The heat-insulating block is formed by coating an aluminum silicate plate with a high-temperature-resistant stainless steel plate.
[0009] The slide includes a lower slide and a side slide. The lower slide is welded and fixed to the bottom side of the support frame, and the cross section of the lower slide is L-shaped. The side slide is welded to the inner side of the support frame.
[0010] A T-shaped groove is provided in the side slideway, and a sliding block with a T-shaped cross section is welded on the side hanging frame, and the sliding block matches the groove.
[0011] The hinge comprises a fixed plate, a pin shaft, and a support plate. The support plate is welded to the top hanger, the fixed plate is welded to the support frame, and the support plate and the fixed plate are connected by a pin shaft.
[0012] The support frames are arranged parallel to each other, and connecting plates are fixedly connected between the support frames.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] The insulation hood used for hot rolling and rough rolling has a rational structure. Installed in the rough rolling area of the hot rolling production line, it can insulate the upper and side portions of the slab, reducing the temperature difference between the upper and lower surfaces of the slab, improving the insulation effect of the insulation hood, and significantly reducing the temperature loss of the slab. Insulation blocks are suspended above the slab and installed on the sides of the slab using slides, allowing for quick online replacement of insulation blocks. At the same time, it acts as a buffer when warped or side-bent slabs hit the insulation hood, significantly reducing the impact force of the slab on the lower surface and body of the insulation hood. Adding insulation blocks to the sides of the support frame greatly improves the insulation effect of the slab edges, making the lateral temperature of the slab more uniform. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is the main view of the present utility model.
[0016] Figure 2 It is a side view of the present utility model.
[0017] Figure 3 It is a top view of the present utility model.
[0018] Figure 4 yes Figure 1 A magnified view of part I.
[0019] Figure 5 This is the main view of the supporting frame.
[0020] Figure 6 is a top view of the supporting frame.
[0021] Figure 7 yes Figure 5 Sectional view along line AA.
[0022] Figure 8 This is a schematic diagram of the installation position of the anti-collision steel plate.
[0023] Figure 9 is Figure 8 the enlarged view of Part II.
[0024] Figure 10 is the schematic diagram of the combined use of multiple sets of insulating covers for hot rolling roughing.
[0025] In the figure: 1 - top hanging frame, 2 - insulating block, 3 - hinge, 4 - support frame, 5 - side slideway, 6 - connecting plate, 7 - bottom slideway, 8 - side hanging frame, 9 - anti-collision steel plate, 10 - slider, 11 - roller table frame, 31 - fixing plate, 32 - pin shaft, 33 - support plate. Specific embodiments
[0026] The present utility model will be described in detail below with reference to the accompanying drawings of the specification, but it should be noted that the implementation of the present utility model is not limited to the following embodiments.
[0027] Embodiment 1
[0028] See Figure 1-Figure 4 , an insulating cover for hot rolling roughing, comprising a hinge 3, a top hanging frame 1, a side hanging frame 8, a support frame 4, a slideway, and an insulating block 2. The support frame 4 is fixed on the roller table frames 11 on both sides of the roller table. The top hanging frame 1 and the side hanging frame 8 are arranged in a U - shaped manner within the support frame 4. The top hanging frame 1 is suspended by the hinge 3 at the top of the support frame 4. The side part of the support frame 4 is fixedly connected with a slideway, and the side hanging frame 8 is slidably connected with the slideway. The insulating block 2 is fixedly connected with the top hanging frame 1 and the side hanging frame 8.
[0029] The slideway includes a bottom slideway 7 and a side slideway 5. The bottom slideway 7 is welded and fixed to the bottom side part of the support frame 4, and the cross - section of the bottom slideway 7 is L - shaped; the side slideway 5 is welded to the inner side part of the support frame 4. A T - shaped groove is provided in the side slideway 5, and a slider 10 with a T - shaped cross - section is welded on the side hanging frame 8, and the slider 10 is matched with the groove.
[0030] See Figure 9 , the hinge 3 includes a fixing plate 31, a pin shaft 32, and a support plate 33. One support plate 33 is welded to the top hanging frame 1, and two fixing plates 31 are welded to the support frame 4. The support plate 33 is connected to the fixing plate 31 through the pin shaft 32. There are two or more hinges 3, which can stably suspend the top hanging frame 1. The hinge 3 can also adopt a multi - section structure. For example, the fixing plates 31 are respectively welded to the support frame 4 and the top hanging frame 1, the support plate 33 is arranged between the fixing plates 31, and both ends of the support plate 33 are connected to the fixing plates 31 through the pin shafts 32.
[0031] The insulating block 2 is made of a high - temperature - resistant stainless steel plate covering a silicate aluminum plate. The high - temperature - resistant stainless steel can be 06Cr25Ni20, with a high temperature resistance of up to 1200 °C. It has a heat absorption effect, is not easily damaged by long - term high - temperature radiation, can radiatively heat the rough - rolled slab, and does not deform after long - term use.
[0032] Example 2
[0033] See Figure 5-Figure 8 , which differs from Example 1 in that an anti-collision steel plate 9 is installed on the support frame 4 at the entrance of the heat preservation cover for hot and rough rolling. The anti-collision steel plate 9 is welded to the middle position of the support frame 4 and is at least two pieces. The anti-collision steel plate 9 can be an L-shaped structure, and the bottom of the anti-collision steel plate 9 is lower than the lower edge of the heat preservation block 2 fixed to the top hanger 1. If the slab tilts before entering the heat preservation cover, the slab will first hit the anti-collision steel plate 9. Since the temperature of the slab head is relatively high, it is easy to produce plastic deformation. In addition, the thickness and weight of the slab are relatively large. After the tilted slab is hit by the anti-collision steel plate 9, the angle between the tilted slab and the slab is adjusted to a height that allows the slab to enter the heat preservation cover, so that the slab can smoothly enter the heat preservation cover without damaging the heat preservation cover.
[0034] Example 3
[0035] See Figure 1-Figure 3 To ensure the overall strength and stability of the insulation cover, based on Examples 1 and 2, two or more support frames 4 are used to jointly support an insulation block 2 fixed to the top hanger 1, with one insulation block 2 on each side. The support frames 4 are arranged parallel to each other, and connecting plates 6 are fixedly connected between the support frames 4.
[0036] Example 4
[0037] See Figure 10 On the rolling line of the rough rolling area of the hot rolling production line, multiple insulation sections can be set, and multiple groups of insulation covers can be set on each insulation section, leaving a certain amount of space for the insulation blocks 2 to move between the groups.
[0038] After adopting the insulation cover for hot rolling and rough rolling, after the insulation block 2 is hit by the warping head of the slab, the hit insulation block 2 swings along the rolling line direction, reducing the risk of the insulation block 2 being damaged. When individual insulation blocks 2 are damaged, they can be replaced online without the need to replace all the insulation blocks 2 in the entire insulation section. Inside the support frame 4, sliding insulation blocks 2 are added on both sides to increase the side closed insulation function. After the insulation block 2 is hit by the large side bending of the slab, the hit insulation block 2 can slide in the slideway with a sliding distance of 10 to 50 mm, reducing the risk of the insulation block 2 being damaged and avoiding damage to the insulation cover body. In addition, when individual insulation blocks 2 are damaged, they can also be replaced online. If the hit insulation block 2 is not deformed, it can be reset by manual push.
[0039] The utility model has a reasonable structure and can insulate the upper and side portions of the slab, reducing the temperature difference between the upper and lower surfaces of the slab, improving the insulation effect of the insulation cover, and significantly reducing the temperature loss of the slab. The method of suspending insulation blocks above the slab and installing insulation blocks on the sides of the slab using slides facilitates the rapid online replacement of insulation blocks. At the same time, it can act as a buffer when the warped or side-bent slab hits the insulation cover, greatly reducing the impact force of the slab on the lower surface and body of the insulation cover. After adding insulation blocks to the side of the support frame, the insulation effect of the slab edges is greatly improved, and the lateral temperature of the slab is more uniform.
[0040] In the above embodiments, the terms "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "center," "vertical," "horizontal," "transverse," and "longitudinal" indicate positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended to better describe the present application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed or operated in a specific orientation.
[0041] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.
[0042] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.
Claims
1. A heat preservation cover for hot rolling rough rolling, characterized in that, it includes a hinge, a top hanging rack, a side hanging rack, a support frame, a slideway, and heat preservation blocks. The support frame is fixed on the roller table frame. The top hanging rack and the side hanging rack are arranged in a U shape within the support frame. The top hanging rack is suspended by a hinge at the top of the support frame. A slideway is fixedly connected to the side of the support frame. The side hanging rack is slidably connected to the slideway. The heat preservation blocks are fixedly connected to the top hanging rack and the side hanging rack.
2. The heat preservation cover for hot rolling rough rolling according to claim 1, characterized in that, an anti-collision steel plate is fixedly connected to the support frame, and the bottom of the anti-collision steel plate is lower than the lower edge of the heat preservation block fixed on the top hanging rack.
3. The heat preservation cover for hot rolling rough rolling according to claim 1, characterized in that, the heat preservation block is formed by covering an aluminum silicate board with a high-temperature resistant stainless steel plate.
4. The heat preservation cover for hot rolling rough rolling according to claim 1, characterized in that, the slideway includes a lower slideway and a side slideway. The lower slideway is welded and fixed to the bottom side of the support frame, and the cross-section of the lower slideway is L-shaped; the side slideway is welded to the inner side of the support frame.
5. The heat preservation cover for hot rolling rough rolling according to claim 4, characterized in that, a T-shaped groove is provided in the side slideway, and a slider with a T-shaped cross-section is welded on the side hanging rack, and the slider is matched with the groove.
6. The heat preservation cover for hot rolling rough rolling according to claim 1, characterized in that, the hinge includes a fixing plate, a pin shaft, and a support plate. The support plate is welded to the top hanging rack, the fixing plate is welded to the support frame, and the support plate is connected to the fixing plate through the pin shaft.
7. The heat preservation cover for hot rolling rough rolling according to claim 1, characterized in that, the support frames are arranged in parallel, and a connecting plate is fixedly connected between the support frames.