High-temperature heating plate deformation suppression structure for glass production
By setting elastic pads on the heating plate and using a stepped heating process, the deformation problem of the heating plate during the first high-temperature heating is solved, resulting in higher flatness and service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUHU TOKEN SCI
- Filing Date
- 2025-05-23
- Publication Date
- 2026-06-12
AI Technical Summary
Existing heating plates experience localized stress concentration and significantly high deformation during initial high-temperature heating due to differences in the thermal expansion coefficients of the materials and the rigid constraints of the mechanical structure, which affects the quality of glass production.
The heating plate is made of stainless steel, with corner screws and side screws installed at the corners and sides. Each corner screw is equipped with an elastic washer, which consists of a high-temperature resistant graphite layer and a stainless steel corrugated layer. This, combined with the stepped heating process, gradually releases thermal stress.
It reduces the deformation during the initial heating by 30% to 50%, improves the flatness of the heating plate to within ±0.03mm, and extends the service life of the heating plate by 20% to 30%.
Smart Images
Figure CN224356286U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of glass production technology, and more specifically, it relates to a deformation suppression structure for a high-temperature heating plate used in glass production. Background Technology
[0002] As a core piece of equipment in the high-temperature processing of the glass manufacturing industry, the flatness of the heating plate directly affects product quality. Traditional heating plates mostly adopt a rigid, fixed structure. However, during the initial high-temperature heating, due to the differences in the thermal expansion coefficients of the materials of different components and the rigid constraints of the mechanical structure, local stress concentration occurs, resulting in a significantly higher deformation during the initial heating than during subsequent heating. Therefore, existing technologies have not been designed to address stress release and thermal expansion coordination during the initial heating, and cannot effectively solve the problem of large deformation during the initial heating, thus affecting subsequent glass production.
[0003] Existing technology includes a specification titled "A High-Temperature Resistant Graphene Heating Plate" with publication number CN110798915A. This technology discloses a high-temperature resistant graphene heating plate, comprising a microcrystalline glass plate, a sheet-like graphene sintered layer, and conductive parts. A sheet-like graphene sintered layer, formed by sintering a mixture of sheet-like graphene, is integrally formed on one side of the microcrystalline glass plate. Two sets of non-contact conductive parts are provided on the surface of the sheet-like graphene sintered layer. Because the sheet-like graphene sintered layer, fixed to one side of the microcrystalline glass plate after sintering, has a stable physical structure, it is highly stable and tightly bonded to the microcrystalline glass plate, making it less prone to cracking at high temperatures. Furthermore, no adhesive is used for bonding, eliminating the problem of adhesive melting at high temperatures. Experiments have shown that the graphene heating plate produced by this method can reach a heating temperature of 550 to 600 degrees Celsius, significantly increasing the heating temperature compared to existing technologies.
[0004] However, this technology does not address the technical issues and solutions of this application. Utility Model Content
[0005] The technical problem to be solved by this utility model is: to provide a deformation suppression structure for high-temperature heating plates in glass production that is simple in structure, can reduce the deformation of the heating plate during the first heating, improve the flatness of the heating plate, reduce local stress concentration through elastic buffering and thermal expansion coordination, realize the gradual release of thermal stress, and improve the performance of the heating plate.
[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:
[0007] This utility model is a deformation suppression structure for a high-temperature heating plate used in glass production. It includes a heating plate body, with each corner of the heating plate body serving as a corner connection position and each side of the middle part of the heating plate body serving as a side connection position. Each corner connection position is equipped with a corner screw, and each corner screw is connected to a fixing component. Elastic washers are fitted at the corner screw positions between the heating plate body and the fixing component. Each side connection position is equipped with a side screw, and each side screw is connected to a fixing component.
[0008] The heating plate is made of stainless steel.
[0009] The side screws are made of a nickel-based high-temperature alloy.
[0010] The elastic gasket is a corrugated gasket.
[0011] The elastic gasket includes an outer layer and an inner layer. The outer layer is a high-temperature resistant graphite layer, and the inner layer is a stainless steel corrugated layer.
[0012] The corner screws are made of stainless steel.
[0013] The stainless steel used for the corner screws is 310S stainless steel.
[0014] The heating plate is made of 310S stainless steel.
[0015] An electric heater is installed on the heating plate.
[0016] The working principle and beneficial effects of this utility model are as follows:
[0017] The deformation suppression structure for high-temperature heating plates used in glass production described in this utility model, through structural improvements, achieves both connection of the heating plate body and avoids rigid connection, effectively realizing elastic deformation. Corner screws are installed at the corner connection positions of each corner of the heating plate body, connecting the corners of the heating plate body to the fixing components. Side screws are installed at the side connection positions of the heating plate body, connecting the middle of the heating plate body to the fixing components. Elastic washers are respectively provided on each corner screw. The elastic washers are corrugated, allowing the heating plate body to elastically deform relative to the extension direction of the corner screws, while the heating plate body is rigidly constrained by the corner screws in the horizontal direction (perpendicular to the corner screw direction). The elastic washers consist of a high-temperature resistant graphite layer and a stainless steel corrugated layer, giving the elastic washers both elasticity and heat resistance. The side screws are located in the middle area of the heating plate and are made of a nickel-based alloy (such as Inconel 718) with a coefficient of thermal expansion close to that of the 310S stainless steel used to make the heating plate, reducing constraint stress. Furthermore, a stepped heating process is used during the initial heating: before the initial heating, the temperature is gradually increased to 200℃, 350℃, and 450℃ in three stages, with each stage held for one hour, to gradually release thermal stress. The structure and process of this invention achieve the following beneficial effects: Reduced deformation of the heating plate: Deformation during the initial heating is reduced by 30%–50%, and flatness is controlled within ±0.03mm. Extended lifespan of the heating plate: The elastic buffer design reduces stress fatigue, increasing the lifespan of the heating plate by 20%–30%. Attached Figure Description
[0018] The following is a brief explanation of the contents depicted in the accompanying drawings and the markings therein:
[0019] Figure 1 This is a schematic diagram of the deformation suppression structure of the high-temperature heating plate for glass production described in this utility model;
[0020] Figure 2 This is a partial cross-sectional view of the deformation suppression structure of the high-temperature heating plate for glass production described in this utility model.
[0021] The labels in the attached diagram are as follows: 1. Heating plate body; 2. Corner connection position; 3. Side connection position; 4. Corner screw; 5. Fixing component; 6. Elastic washer; 7. Side screw. Detailed Implementation
[0022] 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:
[0023] As attached Figure 1 Appendix Figure 2 As shown, this utility model is a deformation suppression structure for a high-temperature heating plate used in glass production. It includes a heating plate body 1, with corner connection positions 2 at each corner and side connection positions 3 on each side of the middle section of the heating plate body 1. Each corner connection position 2 is fitted with a corner screw 4, and each corner screw 4 is connected to a fixing component 5. Elastic washers 6 are fitted at the corner screw positions 4 between the heating plate body 1 and the fixing component 5. Each side connection position 3 is fitted with a side screw 7, and each side screw 7 is connected to the fixing component 5. This structure addresses the shortcomings of existing technologies by proposing an improved technical solution. In terms of structural design, on the one hand, the connection of the heating plate body is achieved through structural improvement, while on the other hand, rigid connection of the heating plate is avoided, effectively realizing elastic deformation. Corner screws 4 are installed at corner connection positions 2 at each corner of the heating plate body 1. These corner screws 4 connect the corners of the heating plate body 1 to the fixing component 5. Side screws 7 are installed at the side connection positions of the heating plate body 1, connecting the middle of the heating plate body 1 to the fixing component 5. Elastic washers 6 are provided on each corner screw 4. The elastic washers 6 are corrugated, allowing the heating plate body 1 to elastically deform relative to the extension direction of the corner screws 4. The heating plate body 1 is rigidly constrained by the corner screws 4 in the horizontal direction (perpendicular to the corner screw direction). The elastic washers 6 consist of a high-temperature resistant graphite layer (temperature resistance ≥600℃) and a stainless steel corrugated layer, providing both elasticity and heat resistance. The side screws 7 are located in the middle area of the heating plate body 1 and are made of a nickel-based alloy (such as Inconel 718) with a thermal expansion coefficient close to that of the 310S stainless steel used to make the heating plate body, reducing constraint stress. On the other hand, combined with a stepped heating process during the initial heating—that is, before the initial heating, the temperature is gradually increased to 200℃, 350℃, and 450℃ in three stages, with each stage held for 1 hour—this achieves a gradual release of thermal stress. The structure and process of this invention achieve the following beneficial effects: Reduced deformation of the heating plate: Deformation during the initial heating is reduced by 30%–50%, and flatness is controlled within ±0.03mm. Extended lifespan of the heating plate: The elastic buffer design reduces stress fatigue, increasing the lifespan of the heating plate by 20%–30%. The deformation suppression structure for high-temperature heating plates used in glass production described in this invention is simple in structure, reduces deformation during the initial heating of the heating plate, improves the flatness of the heating plate, and reduces local stress concentration through elastic buffering and coordinated thermal expansion, achieving a gradual release of thermal stress and improving the performance of the heating plate.
[0024] The heating plate body 1 is made of stainless steel. The corner screws 4 are also made of stainless steel. In this structure, the corner screws 4 are installed at the four corners of the heating plate body and connected to the heating plate body through elastic washers (corrugated washers) to absorb the expansion difference during heating.
[0025] The side screw 7 is made of a nickel-based high-temperature alloy. With this structure, when fixing the heating plate, the side screw 7 is located in the middle area of the heating plate. It uses a nickel-based alloy (such as Inconel 718) with a thermal expansion coefficient close to that of 310S stainless steel to reduce constraint stress.
[0026] The elastic gasket 6 is a corrugated gasket. With the above structure, the elastic gasket is both heat-resistant and can absorb expansion differences along the extension direction of the corner screw.
[0027] The elastic gasket 6 includes an outer layer and an inner layer. The outer layer is a high-temperature resistant graphite layer, and the inner layer is a stainless steel corrugated layer. With this structure, the elastic gasket can deform, thereby absorbing the deformation of the heating plate when heated and reducing the deformation of the plate itself.
[0028] The corner screws 4 are made of 310S stainless steel. The heating plate body 1 is also made of 310S stainless steel. An electric heater is installed on the heating plate body 1. In this structure, the electric heater is the heat source for high-temperature heating in glass production and is used for heating during glass production.
[0029] The deformation suppression structure for high-temperature heating plates used in glass production described in this utility model, through structural improvements, achieves both the connection of the heating plate body and avoids rigid connection, effectively realizing elastic deformation. Corner screws 4 are installed at corner connection positions 2 at each corner of the heating plate body 1, connecting the corners of the heating plate body 1 to the fixing component 5. Side screws 7 are installed at the side connection positions of the heating plate body 1, connecting the middle of the heating plate body 1 to the fixing component 5. Elastic washers 6 are respectively provided on each corner screw 4. The elastic washers 6 are corrugated, allowing the heating plate body 1 to elastically deform relative to the extension direction of the corner screws 4, while the heating plate body 1 is rigidly constrained by the corner screws 4 in the horizontal direction (perpendicular to the corner screw direction). The elastic washers 6 consist of a high-temperature resistant graphite layer (temperature resistance ≥600℃) and a stainless steel corrugated layer, giving the elastic washers 6 both elasticity and heat resistance. The side screw 7 is located in the middle area of the heating plate body 1 and is made of a nickel-based alloy (such as Inconel 718) with a coefficient of thermal expansion close to that of the 310S stainless steel used to make the heating plate, reducing constraint stress. Combined with a stepped heating process during the initial heating—that is, before the initial heating, the temperature is gradually increased to 200℃, 350℃, and 450℃ in three stages, with each stage held for 1 hour—this achieves gradual release of thermal stress. Using the structure and process described in this invention, the deformation of the heating plate is reduced: the deformation during the initial heating is reduced by 30%–50%, and the flatness is controlled within ±0.03mm. The lifespan of the heating plate is extended: the elastic buffer design reduces stress fatigue, increasing the service life of the heating plate by 20%–30%.
[0030] 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 deformation suppression structure for a high-temperature heating plate used in glass production, characterized in that: The heating plate includes a heating plate body (1), each corner of the heating plate body (1) is a corner connection position (2), each side of the middle part of the heating plate body (1) is a side connection position (3), each corner connection position (2) is equipped with a corner screw (4), each corner screw (4) is connected to a fixing component (5), elastic washers (6) are fitted at the corner screw (4) positions between the heating plate body (1) and the fixing component (5), each side connection position (3) is equipped with a side screw (7), and each side screw (7) is connected to the fixing component (5).
2. The deformation suppression structure for a high-temperature heating plate in glass production according to claim 1, characterized in that: The heating plate body (1) is made of stainless steel.
3. The deformation suppression structure for a high-temperature heating plate in glass production according to claim 1 or 2, characterized in that: The side screw (7) is a structure made of nickel-based high-temperature alloy.
4. The deformation suppression structure for a high-temperature heating plate in glass production according to claim 3, characterized in that: The elastic gasket (6) is a corrugated gasket.
5. The deformation suppression structure for a high-temperature heating plate in glass production according to claim 4, characterized in that: The elastic gasket (6) includes an outer gasket layer and an inner gasket layer. The outer gasket layer is a high-temperature resistant graphite layer, and the inner gasket layer is a stainless steel corrugated layer.
6. The deformation suppression structure for a high-temperature heating plate in glass production according to claim 1 or 2, characterized in that: The corner screw (4) is made of stainless steel.
7. The deformation suppression structure for a high-temperature heating plate in glass production according to claim 6, characterized in that: The stainless steel of the corner screw (4) is 310S stainless steel.
8. The deformation suppression structure for a high-temperature heating plate in glass production according to claim 2, characterized in that: The heating plate body (1) is made of 310S stainless steel.
9. The deformation suppression structure for a high-temperature heating plate in glass production according to claim 1 or 2, characterized in that: An electric heater is provided on the heating plate (1).