Integrated furnace body for metal casting
Through integrated design and multi-layer structure improvement, the existing furnace body is bulky, poor thermal insulation and insufficient penetration resistance, and higher thermal insulation performance, mechanical strength and casting accuracy are achieved.
Patent Information
- Application Number
- CN202421519760.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-04-22
- Estimated Expiration
- 2034-07-01
AI Technical Summary
The existing metal casting furnace body is bulky, has limited thermal insulation effect, and the separation design of core bricks, core bowls and furnace body leads to low coordination accuracy, difficulty in maintenance, and insufficient anti-metal liquid penetration ability, which affects casting safety and product quality.
It adopts an integrated furnace body design, including an integrated molded body, with a working cavity, seat part, feeding part, opening, mold access hole, crystallizer installation hole, primary discharge port and secondary discharge port, and boron nitride material is applied to the inner and outer walls, plus ceramic fiber heat insulation layer and wear-resistant layer.
It significantly improves the thermal insulation performance and mechanical strength of the furnace body, enhances the resistance to metal liquid penetration, improves the concentricity and casting accuracy of casting products, and simplifies the maintenance process.
Smart Images
Figure CN222778824U_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of metal casting, and in particular relates to an integrated furnace body for metal casting. Background Art
[0002] In the metal casting industry, furnace body parts are key components, and their performance directly affects the casting effect and product quality. In the prior art, furnace body parts are usually constructed with thicker refractory materials, which often makes the furnace body bulky and has limited insulation effect. In addition, the core bricks and core bowls of the furnace body are designed separately from the furnace body, and the matching accuracy is low, which affects the outer dimensions of the product, especially the uniformity of the outer metal layer when using the solid-liquid bimetallic casting method, and there is also the problem of difficult maintenance. At the same time, the furnace body parts perform poorly in terms of resistance to metal liquid penetration, which can easily cause metal liquid leakage, affecting casting safety and product quality. Therefore, it is necessary to improve the furnace body in the prior art. Summary of the invention
[0003] In view of this, the present invention aims to overcome the defects in the prior art and proposes an integrated furnace body for metal casting.
[0004] To achieve the above object, the technical solution created by the present invention is implemented as follows:
[0005] An integrated furnace body for metal casting comprises an integrally formed main body, a working cavity is arranged on the main body, the main body comprises a seat part and a feeding part on one side of the seat part, the working cavity extends from the feeding part to the seat part, and an opening is arranged on the feeding part side, mold access holes are arranged on the left and right side walls of the seat part respectively, and a crystallizer mounting hole is arranged on the outer side of each mold access hole; a primary discharge port and a secondary discharge port connected to the working cavity are arranged on the front side wall of the seat part, and a feeding trough is arranged on the inner surface of the front side wall, the feeding trough extends to the open end of the opening, and has a trapezoidal structure, and the side with a small cross section faces the center of the main body; a heating protection tube mounting hole is arranged on the rear side wall of the seat body; a rounded transition is adopted at the junction of the heating protection tube mounting hole and the inner surface of the rear side wall of the seat part.
[0006] Furthermore, the inner wall of the opening and the inner wall of the working cavity are both coated with a boron nitride material coating.
[0007] Furthermore, the concentricity tolerance range of the two mold through holes on the left and right side walls is 0.02-0.5mm.
[0008] Furthermore, the fillet diameter of the junction between the heating protection tube installation hole and the inner surface of the rear side wall of the seat is 2-5 mm.
[0009] Furthermore, a ceramic fiber heat insulation layer is provided on the outer surface of the body.
[0010] Furthermore, at least one spare heating protection tube installation hole is provided on the rear side wall of the seat body.
[0011] Furthermore, the surface of the feed trough, the inner wall of the mold access hole, and the inner wall of the crystallizer mounting hole are all provided with a wear-resistant layer.
[0012] Furthermore, the feed trough is centrally arranged on the seat, and the primary discharge port and the secondary discharge port are both arranged corresponding to the feed trough.
[0013] Furthermore, the primary discharge port and the secondary discharge port adopt a cone-mouth structure.
[0014] Compared with the prior art, the present invention has the following advantages:
[0015] The invention adopts an integrated furnace body design, which not only significantly improves the thermal insulation performance and mechanical strength of the furnace body, but also effectively enhances its ability to resist metal liquid penetration. At the same time, it integrates the functions of the furnace body, core brick, and core bowl of the prior art into one. Since no assembly is required, the integrated structure is more stable and the matching accuracy is higher, which can further improve the concentricity and casting accuracy of the casting products. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The drawings constituting part of the present invention are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:
[0017] Figure 1 A schematic diagram of the structure created by the present invention;
[0018] Figure 2 for Figure 1 A top view of
[0019] Figure 3 for Figure 1 Section view in the AA direction;
[0020] Figure 4 for Figure 2 Cross-sectional view in the EE direction;
[0021] Figure 5 It is a schematic diagram of the three-dimensional structure created by the present invention. DETAILED DESCRIPTION
[0022] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.
[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.
[0024] In the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the invention can be understood according to specific circumstances.
[0025] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0026] An integrated furnace body for metal casting, such as Figures 1 to 5 As shown, it includes an integrally formed body. As an example, the body is cast and formed by a one-time casting of mullite-based and fused quartz-based materials. A working cavity 1 is provided on the body. The body includes a seat 2 and a feeding portion 3 on one side of the seat. The working cavity extends from the feeding portion to the seat, and an opening 4 is provided on the feeding portion side. It should be noted that the opening and the working cavity are actually continuous groove structures on the body. Since they correspond to the seat and the feeding portion, they are named for specific positions for the convenience of clear description. The left side wall 11 and the right side wall 12 of the seat are correspondingly provided with a mold access hole 5, and a crystallizer mounting hole 6 is provided on the outside of each mold access hole, and a positioning step is formed between the mold access hole and the crystallizer mounting hole. The concentricity tolerance range of the two mold access holes on the left and right side walls is 0.02-0.5mm.
[0027] A feed trough 9 is provided on the inner surface of the front side wall 13 of the seat, and the feed trough extends to the open end, and has a trapezoidal structure, with the side with a smaller cross section facing the center of the body; a heating protection tube mounting hole 10 is provided on the rear side wall of the seat. Usually, at least one spare heating protection tube mounting hole may be provided on the rear side wall 14 of the seat. A fillet 15 is used for transition at the junction of the heating protection tube mounting hole and the inner surface of the rear side wall of the seat. As an example, the fillet diameter at the junction of the heating protection tube mounting hole and the inner surface of the rear side wall of the seat is 2-5 mm. It should be noted that the fillet size can also be determined by those skilled in the art according to the diameter of the protection tube, and it can be within the above range.
[0028] The existence of the above-mentioned rounded corners can effectively avoid the rupture of the protective tube caused by the thermal expansion and contraction of the metal liquid after the intrusion of the metal liquid, and at the same time protect the heating protection tube to prevent damage to the protection tube when adding metal blocks. The shape of the feeding port is equipped into a trapezoidal port (which is consistent with the appearance of conventional zinc ingots and aluminum ingots) but larger than the metal ingots. The trapezoidal port faces outward, which can effectively prevent the metal ingot material from tipping over to the inside of the furnace body during the melting process, thereby protecting the heating protection tube.
[0029] The open inner wall 16 and the inner wall of the working chamber (including the front side wall, rear side wall, left side wall and right side wall of the seat) are all coated with boron nitride material coating to enhance the furnace body's ability to resist metal melt penetration and erosion. The outer surface of the body is provided with a ceramic fiber insulation layer, which can effectively reduce the transfer of heat to the external environment and reduce energy consumption. The surface of the feed trough, the inner wall of the mold access hole, and the inner wall of the crystallizer installation hole are all provided with a wear-resistant layer, which can enhance the wear resistance of the furnace body in high-frequency use areas and extend the service life of the furnace body.
[0030] The front side wall of the seat is provided with a primary discharge port 7 and a secondary discharge port 8 connected to the working chamber. The feed trough is arranged in the center of the seat, and the primary discharge port and the secondary discharge port are arranged corresponding to the feed trough. The primary discharge port is used for discharge when the mold is replaced, and the secondary discharge port is used for emergency discharge of the metal liquid in the furnace body in special circumstances. The primary discharge port and the secondary discharge port adopt a cone structure, which is convenient for blocking the corresponding discharge port.
[0031] The invention adopts an integrated furnace body design, which not only significantly improves the thermal insulation performance and mechanical strength of the furnace body, but also effectively enhances its ability to resist metal liquid penetration. At the same time, the functions of the furnace body, core brick and core bowl of the prior art are integrated into one. Since there is no need for assembly, the integrated structure is more stable and the matching accuracy is higher, which can further improve the concentricity and casting accuracy of the casting product. These advantages make the invention have a wide range of application prospects and significant economic benefits in the metal casting industry.
[0032] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims
1. An integrated furnace body for metal casting, characterized in that: It includes an integrally formed main body, on which a working cavity is provided, the main body includes a seat and a feeding part on one side of the seat, the working cavity extends from the feeding part to the seat, and an opening is provided on the feeding part side, and mold access holes are correspondingly provided on the left and right side walls of the seat, and a crystallizer mounting hole is provided on the outer side of each mold access hole; a primary discharge port and a secondary discharge port connected to the working cavity are provided on the front side wall of the seat, and a feeding trough is provided on the inner surface of the front side wall, the feeding trough extends to the open end of the opening, and has a trapezoidal structure, with the side with a small cross-section facing the center of the main body; a heating protection tube mounting hole is provided on the rear side wall of the seat; a rounded transition is adopted at the junction of the heating protection tube mounting hole and the inner surface of the rear side wall of the seat.
2. The integrated furnace body for metal casting according to claim 1, characterized in that: The inner wall of the opening and the inner wall of the working cavity are both coated with a boron nitride material coating.
3. The integrated furnace body for metal casting according to claim 1, characterized in that: The concentricity tolerance range of the two mold access holes on the left and right side walls is 0.02-0.5mm.
4. The integrated furnace body for metal casting according to claim 1, characterized in that: The fillet diameter at the junction of the heating protection tube installation hole and the inner surface of the rear side wall of the seat is 2-5mm.
5. The integrated furnace body for metal casting according to claim 1, characterized in that: The outer surface of the body is provided with a ceramic fiber heat insulation layer.
6. The integrated furnace body for metal casting according to claim 1, characterized in that: At least one spare heating protection tube installation hole is also arranged on the rear side wall of the seat body.
7. The integrated furnace body for metal casting according to claim 1, characterized in that: The surface of the feed trough, the inner wall of the mold access hole and the inner wall of the crystallizer installation hole are all provided with a wear-resistant layer.
8. The integrated furnace body for metal casting according to claim 1, characterized in that: The feed trough is centrally arranged on the seat, and the primary discharge port and the secondary discharge port are arranged corresponding to the feed trough.
9. The integrated furnace body for metal casting according to claim 1, characterized in that: The primary discharge port and the secondary discharge port adopt a cone-shaped structure.