A special support for cold-type kiln.

Abstract

This utility model discloses a special support for cold-form mold loading into a kiln, belonging to the field of centrifugal roll production technology. It includes a kiln car body and several cold-form mold placement platforms mounted on the kiln car body. The cold-form mold placement platforms are fixedly installed side-by-side on the platform of the kiln car body. Each cold-form mold placement platform has a limiting structure at its top for positioning the cold-form mold, and each platform is connected to the kiln car body via a support column. The dimensions of each cold-form mold placement platform are adapted to the external dimensions of the cold-form mold to be preheated. This utility model solves the problems of low efficiency and high energy consumption in existing single-layer preheating modes, and is suitable for batch preheating scenarios of cold-form molds in centrifugal roll production, especially adaptable to industrial production needs that require faster preheating and reduced equipment investment.

Description

Technical Field

[0001] This utility model belongs to the field of centrifugal roll production technology, specifically relating to a special support for cold-type kiln loading. Background Technology

[0002] In the industrial production process of centrifugal rolls, the cold mold is the core component of roll forming. It needs to go through the key process of "high-temperature firing (preheating) in the kiln → spraying". Only when the cold mold is heated to the specified temperature in the preheating furnace can it meet the requirements of the subsequent spraying operation for the surface condition of the cold mold.

[0003] In existing technologies, cold mold preheating relies on a "single-layer kiln car support": the kiln car platform of the preheating furnace can only be laid with one layer of cold mold, and a maximum of 8 cold molds can be placed in each preheating furnace. With the growth in market demand for centrifugal rolls, the current production volume has far exceeded the carrying capacity of the single-layer preheating mode. To avoid cold mold preheating becoming a production bottleneck, companies often need to temporarily add a resistance furnace for auxiliary preheating.

[0004] However, temporarily adding a preheating furnace presents the following problems:

[0005] Production process disruption: The additional preheating furnace requires workshop space, and its operation requires coordination of electricity and transfer routes, which can easily cause resource conflicts with the "first-pass roll processing", resulting in delays in the overall production schedule;

[0006] High energy consumption costs: The rated power of a single resistance furnace is usually 20kW, and it needs to run continuously for 20 hours a day. Based on the industrial electricity price of 0.5 yuan / kWh, the daily additional electricity consumption is 200 kWh and the electricity cost is 100 yuan. Long-term operation will significantly increase production costs.

[0007] Unstable preheating quality: The parameters of the temporarily added preheating furnace differ from those of the original equipment. Furthermore, when the mold is placed in a single layer, the heating of the cold mold is easily affected by the flatness and humidity of the work surface, which may lead to deviations in the temperature of the cold mold and affect the subsequent spraying quality.

[0008] In summary, the existing "single-layer preheating support" can no longer meet the current production needs of centrifugal rolls, and there is an urgent need for a support structure that can improve preheating efficiency, reduce equipment investment, and ensure preheating quality. Utility Model Content

[0009] To address the problems of production process interference, high energy consumption costs, and unstable preheating quality in existing technologies, this utility model provides a special support for cold-type kilns. It solves the problems of low efficiency and high energy consumption in existing single-layer preheating modes, and is suitable for cold-type batch preheating scenarios in centrifugal roll production, especially adaptable to industrial production needs that require faster preheating and reduced equipment investment.

[0010] The technical solution adopted by this utility model for a special support for cold-type upper kilns is as follows:

[0011] A special support for cold molds in a kiln includes a kiln car body and several cold mold placement platforms mounted on the kiln car body. The cold mold placement platforms are fixedly installed side by side on the platform of the kiln car body. Each cold mold placement platform has a limiting structure on its top for limiting the position of the cold mold. Each cold mold placement platform is connected to the kiln car body through a support column. The size of each cold mold placement platform is adapted to the external size of the cold mold to be preheated.

[0012] A further improvement of this utility model is that the cold-type placement platform is made of heat-resistant steel.

[0013] A further improvement of this utility model is that the surface of the cold-type placement platform has been flattened and dried, and the surface flatness error of the cold-type placement platform is no greater than 0.5mm / m.

[0014] A further improvement of the present invention is that the limiting structure includes an edge limiting block set along the edge of the cold-type placement platform and an intermediate limiting block located in the middle of the cold-type placement platform for limiting the displacement of the cold-type on the cold-type placement platform; wherein the edge limiting block is arranged in a right-angled trapezoid, the intermediate limiting block is arranged in an isosceles trapezoid, and the cold-type is located between the hypotenuse of the edge limiting block and the hypotenuse of the intermediate limiting block.

[0015] A further improvement of this utility model is that: there are 4 support columns, which are respectively set at the four corners of the cold-type placement platform, and the height of the support columns is adjustable, with an adjustment range of 500-700mm.

[0016] A further improvement of the present invention is that: the cold-type placement platform is provided with a number of heat dissipation holes evenly distributed, and the diameter of the heat dissipation holes is 8-12mm, and the distance between adjacent heat dissipation holes is 50-80mm.

[0017] A further improvement of this utility model is that a high-temperature resistant gasket made of ceramic fiber with a thickness of 3-5mm is provided between the platform of the kiln car body and the lower placement platform.

[0018] A further improvement of this utility model is that a high-temperature resistant gasket made of ceramic fiber with a thickness of 3-5mm is provided between the platform of the kiln car body and the cold-type placement platform.

[0019] Due to the adoption of the above technical solution, the technical progress achieved by this utility model includes:

[0020] The limiting structure of this utility model's cold-form placement platform can fix the cold-forms placed on the platform, preventing them from rolling. Since the middle limiting block is located between the edge limiting blocks, two cold-forms can be placed side by side on one platform. Furthermore, since the two cold-forms are fixed by the limiting structure, another cold-form can be placed between them. Compared to the original cold-form placement platform without a limiting structure, the number of cold-forms that can be placed is increased by 1 / 2, thus eliminating the need for an additional preheating furnace and reducing energy consumption.

[0021] The platform of this invention is flattened to avoid uneven heating of the cold mold, and the drying process prevents moisture from affecting the stability of the mold temperature. With the optimal power supply time, the temperature deviation of the cold mold can be controlled within ±20℃, which fully meets the requirements of the spraying operation.

[0022] Meanwhile, the adjustable support column of this utility model is adapted to cold rolls of different heights, and the positioning structure and guardrail ensure that there is no risk of displacement or slippage during cold roll transfer and preheating, adapting to the production needs of various specifications of centrifugal roll cold rolls. Attached Figure Description

[0023] Figure 1 This is a structural schematic diagram of a cold-type placement platform for a special cold-type kiln support according to the present invention;

[0024] Figure 2 This is a top view schematic diagram of a special support for cold-type upper kiln according to the present invention;

[0025] Figure 3 This is a schematic diagram of the placement of the cold-type model of this utility model on the cold-type model placement platform.

[0026] In the attached diagram: 1. Kiln car body; 2. Cold mold placement platform; 3. Limiting structure; 31. Edge limiting block; 32. Middle limiting block; 4. Support column. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments. In the following description, descriptions of well-known structures and technologies are omitted to avoid unnecessarily obscuring the concept of this utility model.

[0028] like Figure 1 and Figure 2 As shown, this utility model discloses a special support for cold-type kiln loading, including a kiln car body 1 and a cold-type placement platform 2 set on the kiln car body 1; the cold-type placement platform 2 is made of heat-resistant steel, and the platform surface of the cold-type placement platform 2 has been flattened and dried, and the surface flatness error of the cold-type placement platform 2 is no more than 0.5mm / m.

[0029] The cold mold placement platform 2 is fixedly installed on the platform of the kiln car body 1. The cold mold placement platform 2 is connected to the kiln car body 1 through support columns 4. The size of the cold mold placement platform 2 is adapted to the external size of the cold mold to be preheated. There are four support columns 4, which are respectively set at the four corners of the cold mold placement platform 2. The height of the support columns 4 is adjustable, with an adjustment range of 500-700mm.

[0030] The upper surface of the cooling type placement platform 2 of this utility model is provided with a cooling type positioning structure. The cooling type positioning structure includes an edge limiting block 31 arranged along the edge of the cooling type placement platform 2 for limiting the displacement of the cooling type on the cooling type placement platform 2, and a middle limiting block 32 located in the middle of the cooling type placement platform 2. The edge limiting block 31 is arranged in a right trapezoidal shape, and the middle limiting block 32 is arranged in an isosceles trapezoidal shape. The cooling type is located between the hypotenuse of the edge limiting block 31 and the hypotenuse of the middle limiting block 32.

[0031] The cooling-type placement platform 2 of this utility model is provided with a number of heat dissipation holes, which are evenly distributed on the cooling-type placement platform 2. The diameter of the heat dissipation holes is 8-12mm, and the spacing between adjacent heat dissipation holes is 50-80mm. At the same time, a high-temperature resistant gasket made of ceramic fiber with a thickness of 3-5mm is provided between the platform surface of the kiln car body 1 and the cooling-type placement platform 2.

[0032] Example 1

[0033] In this embodiment, the kiln car body 1 adopts the standard kiln car that is matched with the existing preheating furnace, with a platform size of 2000mm×1500mm.

[0034] The cold-formed placement platform 2 is made of 310S heat-resistant steel, cut into plates of 400mm×1400mm×12mm. Four cold-formed placement platforms 2 are placed side by side on the kiln car body 1. Then, the surface of the plates is ground with a CNC grinder. After grinding, a laser flatness tester is used to ensure that the flatness error is ≤0.5mm / m. After grinding, high-pressure air is used to blow away the debris to avoid residual impurities. Finally, the flattened plates are placed in a drying room and dried at 130℃ for 2.5 hours. After drying, they are allowed to cool naturally to room temperature to prevent cracking caused by sudden cooling.

[0035] In this embodiment, the support column 4 is made of 310S heat-resistant steel round bar, and there are a total of 4 columns; each support column 4 has threaded holes at both ends for connecting the cold-type placement platform 2 and the kiln car body 1.

[0036] Four support columns 4 are aligned with the kiln car body 1 and fixed by welding. After welding, the weld seams are ground smooth with an angle grinder to avoid scratching the cold mold. The cold mold placement platform 2 is placed on top of the support columns 4 and fixed with bolts. High-temperature resistant and anti-loosening graphite washers are installed on the contact surfaces between the bolts and the platform. Right-angled trapezoidal 310S heat-resistant steel edge limiting blocks 31 are welded to the left side edges of the cold mold placement platform 2. In the non-cold mold contact area of ​​the cold mold placement platform 2, 10mm diameter heat dissipation holes are drilled with a spacing of 60mm to promote the circulation of hot gas in the preheating furnace. At the same time, isosceles trapezoidal 310S heat-resistant steel intermediate limiting blocks 32 are welded to the center positions of the front and rear sides of the cold mold placement platform 2. The height of the intermediate limiting blocks 32 is the same as the height of the edge limiting blocks 31.

[0037] When using the above embodiments, as Figure 3 As shown, the cold type is located between the inclined side of the edge limiting block 31 and the inclined side of the middle limiting block 32, and the limiting structure 3 of the cold type placement platform 2 can fix the cold type placed on the cold type placement platform 2 to prevent the cold type from rolling. Since the middle limiting block 32 is located between the edge limiting blocks 31, two cold types can be placed side by side on one cold type placement platform 2. At the same time, since the two cold types are fixed by the limiting structure 3, another cold type can be placed in the middle above the two cold types. Compared with the original cold type placement platform 2 without the limiting structure 3, the number of cold types can be increased by 1 / 2, so there is no need to use an additional preheating furnace and the energy consumption is reduced.

[0038] In the above embodiments, this utility model provides a special support for cold mold placement in a kiln. The limiting structure of the cold mold placement platform can fix the cold mold placed on the platform and prevent it from rolling. Since the middle limiting block is located between the edge limiting blocks, two cold molds can be placed side by side on one cold mold placement platform. At the same time, since the two cold molds are fixed by the limiting structure, another cold mold can be placed above the middle of the two cold molds. Compared with the original cold mold placement platform without a limiting structure, the number of cold molds that can be placed is increased by 1 / 2, thus eliminating the need for an additional preheating furnace and reducing energy consumption. The platform of this utility model is flat to avoid uneven heating of the cold molds, and the drying treatment prevents moisture from affecting the mold temperature stability. With the optimal power supply time, the mold temperature deviation of the cold mold can be controlled within ±20℃, which fully meets the requirements of spraying operations. At the same time, the adjustable support column of this utility model can adapt to cold molds of different heights, and the positioning structure and guardrail ensure that there is no risk of displacement or slippage during cold mold transfer and preheating, adapting to the production needs of various specifications of centrifugal roll cold molds.

[0039] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the concept and scope of the present invention. Various modifications and improvements made to the technical solutions of the present invention by those skilled in the art without departing from the design concept of the present invention should fall within the protection scope of the present invention. The technical content for which protection is sought in the present invention has been fully described in the claims.

Claims

1. A special support for cold-type kiln loading, characterized in that: It includes a kiln car body (1) and several cold mold placement platforms (2) set on the kiln car body (1); wherein, the cold mold placement platforms (2) are fixedly installed side by side on the platform of the kiln car body (1), and each cold mold placement platform (2) is provided with a limiting structure (3) for limiting the cold mold at the top, and each cold mold placement platform (2) is connected to the kiln car body (1) through a support column (4), and the size of each cold mold placement platform (2) is adapted to the appearance size of the cold mold to be preheated.

2. The special support for cold-type kiln as described in claim 1, characterized in that: The cold-type placement platform (2) is made of heat-resistant steel.

3. The special support for cold-type kiln as described in claim 1, characterized in that: The surface of the cold-type placement platform (2) has been flattened and dried, and the surface flatness error of the cold-type placement platform (2) is no greater than 0.5 mm / m.

4. The special support for cold-type upper kiln as described in claim 1, characterized in that: The limiting structure (3) includes an edge limiting block (31) set along the edge of the cold type placement platform (2) for limiting the displacement of the cold type on the cold type placement platform (2) and an intermediate limiting block (32) located in the middle of the cold type placement platform (2); wherein, the edge limiting block (31) is arranged in a right trapezoidal shape, the intermediate limiting block (32) is arranged in an isosceles trapezoidal shape, and the cold type is located between the hypotenuse of the edge limiting block (31) and the hypotenuse of the intermediate limiting block (32).

5. A special support for cold-type upper kiln as described in claim 1, characterized in that: The number of support columns (4) is 4, which are respectively set at the four corners of the cold-type placement platform (2), and the height of the support columns (4) is adjustable, with an adjustment range of 500-700mm.

6. A special support for cold-type kilns according to claim 1, characterized in that: The cold-type placement platform (2) is provided with a number of heat dissipation holes evenly distributed on it. The diameter of the heat dissipation holes is 8-12mm and the distance between adjacent heat dissipation holes is 50-80mm.

7. A special support for cold-type kiln as described in claim 1, characterized in that: A high-temperature resistant gasket made of ceramic fiber with a thickness of 3-5mm is provided between the platform of the kiln car body (1) and the cold placement platform (2).

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