Heating device for casting
By employing a threaded nested heating structure and a composite heat source in the casting device, the problem of uneven heating of the castings was solved, achieving temperature uniformity and reduced energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI GUOJIN PRECISION MASCH TECH CO LTD
- Filing Date
- 2025-06-27
- Publication Date
- 2026-05-26
AI Technical Summary
Traditional casting heating devices result in uneven heating of different parts of the casting. Thick-walled areas dissipate heat slowly and are prone to overheating, while thin-walled areas cool down quickly, causing thermal stress deformation.
By adopting a threaded nesting design of the first heating structure and the second heating structure, and by adjusting the heating distance and power, combined with the composite heat source of infrared radiation plate and resistance wire heating ring, the uniformity of mold surface temperature is achieved.
It achieves uniform temperature on the mold surface, reduces the local stress deformation rate of the casting, and reduces energy consumption by recovering heat.
Smart Images
Figure CN224273259U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of casting technology, and specifically discloses a heating device for casting. Background Technology
[0002] Casting is one of the earliest metal heat treatment techniques mastered by humankind, with a history of approximately 6,000 years. China entered its golden age of bronze casting around 1700-1000 BC, achieving a remarkably high level of craftsmanship. Casting involves pouring molten metal into a casting cavity conforming to the shape of the part, allowing it to cool and solidify to obtain the part or blank.
[0003] Traditional casting heating devices use overall heating, which leads to uneven heating of different parts of the casting. Thick-walled areas dissipate heat slowly and are prone to overheating, while thin-walled areas cool down quickly, which can easily cause thermal stress deformation. Therefore, a casting heating device is needed to solve this problem. Utility Model Content
[0004] This utility model proposes a heating device for casting. Through the threaded nesting design of the first heating structure and the second heating structure, the heating distance and power of different areas can be independently adjusted to achieve uniform temperature on the mold surface and reduce the local stress deformation rate of the casting.
[0005] This utility model is implemented as follows: a heating device for casting includes a mold, and the outer wall of the mold is provided with a shell;
[0006] The housing is internally threaded with a first heating structure. The first heating structure has a through threaded hole in the middle. The threaded hole is internally threaded with a second heating structure. The bottom end of the first heating structure is fixedly connected with a first rotating shaft extending to the outside of the housing. The bottom end of the second heating structure is fixedly connected with a second rotating shaft extending into the first rotating shaft. The first rotating shaft and the second rotating shaft are coaxially arranged.
[0007] Both the first heating structure and the second heating structure are composed of an infrared radiation plate located on the upper layer and a resistance wire heating ring located in the middle layer.
[0008] As a preferred embodiment of the casting heating device of this utility model, the bottom ends of both the first heating structure and the second heating structure are provided with heat insulation layers, and the heat insulation layers are high-temperature resistant ceramic plates.
[0009] As a preferred embodiment of the casting heating device of this utility model, the outer wall of the shell is provided with an annular interlayer cavity, and the top and bottom of the outer wall of the interlayer cavity are respectively connected to a water inlet and a water outlet pipe.
[0010] As a preferred embodiment of the casting heating device of this utility model, a connecting plate that is fixedly connected to the first heating structure is provided at the bottom end of the threaded hole.
[0011] As a preferred embodiment of the casting heating device of this utility model, the outer walls of both the first and second rotating shafts are covered with annular heat insulation pads.
[0012] In a preferred embodiment of the casting heating device of this utility model, the infrared radiation plate and the resistance wire heating ring are fixed together by a high-temperature resistant adhesive, and the surface of the infrared radiation plate is provided with uniformly distributed radiation grooves.
[0013] The beneficial effects of this utility model are:
[0014] By rotating the first heating structure, the distance between the first heating structure and the mold is adjusted; by rotating the second heating structure, the distance between the second heating structure and the mold is adjusted. Furthermore, through the threaded nesting design of the first and second heating structures, the heating distance and power of different areas can be independently adjusted. Combined with the composite heat source of infrared radiation plate and resistance wire heating ring, the surface temperature of the mold is made uniform, and the local stress deformation rate of the casting is reduced. Attached Figure Description
[0015] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0016] Figure 1 This is an overall structural diagram of a casting heating device according to the present invention.
[0017] Figure 2 This is a front sectional view of a heating device for casting according to the present invention.
[0018] Figure 3 This is a first heating structure diagram of the present invention.
[0019] Figure 4 This is a structural diagram of the heating structure of this utility model.
[0020] In the diagram, the markings are: 1. Mold; 2. Shell; 3. First heating structure; 301. Threaded hole; 302. First rotating shaft; 4. Second heating structure; 401. Second rotating shaft; 5. Infrared radiation plate; 501. Resistance wire heating ring; 502. Heat insulation layer; 6. Interlayer cavity. Detailed Implementation
[0021] The present invention will be further described below with reference to the accompanying drawings and specific embodiments to aid in understanding its content. Unless otherwise specified, the methods used in this invention are conventional methods; the raw materials and apparatus used, unless otherwise specified, are conventional commercially available products.
[0022] Please see Figure 1-4 A casting heating device includes a mold 1, and a shell 2 is provided on the outer wall of the mold 1;
[0023] The housing 2 is internally threaded with a first heating structure 3. The first heating structure 3 has a through threaded hole 301 in the middle. The threaded hole 301 is internally threaded with a second heating structure 4. The bottom end of the first heating structure 3 is fixedly connected with a first rotating shaft 302 extending to the outside of the housing 2. The bottom end of the second heating structure 4 is fixedly connected with a second rotating shaft 401 extending into the first rotating shaft 302. The first rotating shaft 302 and the second rotating shaft 401 are coaxially arranged.
[0024] Both the first heating structure 3 and the second heating structure 4 are composed of an infrared radiation plate 5 located on the upper layer and a resistance wire heating ring 501 located in the middle layer.
[0025] In this embodiment: Holding the first rotating shaft 302, the first heating structure 3 is rotated, causing the first heating structure 3 to move up or down within the housing 2, thereby adjusting the distance between the first heating structure 3 and the mold 1. Holding the second rotating shaft 401, the second heating structure 4 is rotated, causing the second heating structure 4 to move up or down within the threaded hole 301, thereby adjusting the distance between the second heating structure 4 and the mold 1. Furthermore, through the threaded nesting design of the first heating structure 3 and the second heating structure 4, the heating distance and power of different areas can be independently adjusted (e.g., close-range heating of thick-walled areas and far-range heating of thin-walled areas). Combined with the composite heat source of the infrared radiation plate 5 and the resistance wire heating ring 501, the surface temperature uniformity of the mold 1 is achieved, reducing the local stress deformation rate of the casting.
[0026] As a technical optimization of this utility model, the bottom ends of the first heating structure 3 and the second heating structure 4 are both provided with heat insulation layer 502, which is a high-temperature resistant ceramic plate.
[0027] In this embodiment, thermal conduction interference can be avoided by using the heat insulation layer 502.
[0028] As a technical optimization of this utility model, the outer wall of the shell 2 is provided with an annular interlayer cavity 6, and the top and bottom of the outer wall of the interlayer cavity 6 are respectively connected to a water inlet and a water outlet pipe.
[0029] In this embodiment: cold water can be introduced through the water inlet of the annular sandwich cavity 6, and the residual heat of the first heating structure 3 and the second heating structure 4 is used to heat the water in the sandwich cavity 6 so that it can be recycled and reused, thereby reducing energy consumption and accelerating the cooling of the mold 1.
[0030] As a technical optimization of this utility model, the outer walls of the first rotating shaft 302 and the second rotating shaft 401 are both covered with annular heat insulation pads.
[0031] In this embodiment, the first rotating shaft 302 and the second rotating shaft 401 can be insulated by an annular heat insulation pad.
[0032] As a technical optimization of this utility model, the infrared radiation plate 5 and the resistance wire heating ring 501 are fixed together by a high-temperature resistant adhesive, and the surface of the infrared radiation plate 5 is provided with uniformly distributed radiation grooves.
[0033] In this embodiment, the radiation grooves on the surface of the infrared radiation plate 5 can increase the heat radiation area, so that the heat is focused on the surface of the mold 1, thereby improving the heating efficiency.
[0034] The working principle and usage process of this utility model: Hold the first rotating shaft 302 and rotate the first heating structure 3 to move the first heating structure 3 up or down inside the shell 2, thereby adjusting the distance between the first heating structure 3 and the mold 1. Hold the second rotating shaft 401 and rotate the second heating structure 4 to move the second heating structure 4 up or down inside the threaded hole 301, thereby adjusting the distance between the second heating structure 4 and the mold 1. Through the threaded nesting design of the first heating structure 3 and the second heating structure 4, the heating distance and power of different areas can be adjusted independently (such as close-range heating of thick-walled areas and far-range heating of thin-walled areas). Combined with the composite heat source of infrared radiation plate 5 and resistance wire heating ring 501, the surface temperature uniformity of the mold 1 is achieved, and the local stress deformation rate of the casting is reduced.
[0035] After casting is completed, cold water can be introduced through the water inlet of the annular sandwich cavity 6. The residual heat of the first heating structure 3 and the second heating structure 4 is used to heat the water in the sandwich cavity 6 so that it can be recycled and reused, thereby reducing energy consumption and accelerating the cooling of the mold 1.
[0036] In the description of this utility model, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inner", "outer", "back", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0037] However, the above description is only a specific embodiment of this utility model and should not be construed as limiting the scope of implementation of this utility model. Therefore, any substitution of equivalent components or equivalent changes and modifications made in accordance with the scope of protection of this utility model should still fall within the scope of the claims of this utility model.
Claims
1. A heating device for casting, comprising a mold (1), characterized in that: The outer wall of the mold (1) is provided with a shell (2); The housing (2) is internally threaded with a first heating structure (3), the first heating structure (3) has a through threaded hole (301) in the middle, the threaded hole (301) is internally threaded with a second heating structure (4), the bottom end of the first heating structure (3) is fixedly connected with a first rotating shaft (302) extending to the outside of the housing (2), the bottom end of the second heating structure (4) is fixedly connected with a second rotating shaft (401) extending into the first rotating shaft (302), and the first rotating shaft (302) and the second rotating shaft (401) are coaxially arranged; The first heating structure (3) and the second heating structure (4) are both composed of an infrared radiation plate (5) located on the upper layer and a resistance wire heating ring (501) located in the middle layer.
2. The casting heating device according to claim 1, characterized in that: The bottom ends of the first heating structure (3) and the second heating structure (4) are both provided with heat insulation layer (502), and the heat insulation layer (502) is a high-temperature resistant ceramic plate.
3. The casting heating device according to claim 1, characterized in that: The outer wall of the shell (2) is provided with an annular interlayer cavity (6), and the top and bottom of the outer wall of the interlayer cavity (6) are respectively connected to a water inlet and a water outlet pipe.
4. A casting heating device according to claim 1, characterized in that: The outer walls of the first rotating shaft (302) and the second rotating shaft (401) are both covered with annular heat insulation pads.
5. A casting heating device according to claim 1, characterized in that: The infrared radiation plate (5) is fixed to the resistance wire heating ring (501) by a high-temperature resistant adhesive, and the surface of the infrared radiation plate (5) is provided with uniformly distributed radiation grooves.