CN222058752U - Pouring structure for preventing flange from shrinking - Google Patents
Pouring structure for preventing flange from shrinking Download PDFInfo
- Publication number
- CN222058752U CN222058752U CN202323607702.XU CN202323607702U CN222058752U CN 222058752 U CN222058752 U CN 222058752U CN 202323607702 U CN202323607702 U CN 202323607702U CN 222058752 U CN222058752 U CN 222058752U
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- flange
- pouring
- shaft hole
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- 238000005266 casting Methods 0.000 claims description 26
- 238000000034 method Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 17
- 239000002184 metal Substances 0.000 abstract description 3
- 230000000630 rising effect Effects 0.000 abstract 6
- 238000010586 diagram Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
本实用新型涉及一种防止法兰冷缩的浇冒结构，法兰的中心处设置有浇冒口，且法兰中心处浇冒口切除形成轴孔；其特征在于：包括法兰砂芯；通过在法兰砂芯顶端的浇冒口位置处形成半球型的凹腔，在进行法兰浇铸成型时，金属液会在半球型凹腔的位置处形成了缩孔的空间，让缩孔缺陷发生在半球型凹腔内，这样就避免了在法兰的轴孔位置处产生缩孔缺陷，后续直接将法兰轴孔位置处具有缩孔缺陷的浇冒口进行切除；这种浇冒口结构的设计，减少了法兰轴孔位置处产生缩孔缺陷的情况。
The utility model relates to a pouring and rising structure for preventing flange from shrinking. A pouring and rising head is arranged at the center of the flange, and the pouring and rising head at the center of the flange is cut to form an axial hole. The utility model is characterized in that: it comprises a flange sand core; by forming a hemispherical cavity at the pouring and rising head position at the top end of the flange sand core, when the flange is cast and formed, molten metal forms a shrinkage cavity space at the position of the hemispherical cavity, allowing shrinkage cavity defects to occur in the hemispherical cavity, thus avoiding the shrinkage cavity defects at the axial hole position of the flange, and subsequently directly cutting off the pouring and rising head with shrinkage cavity defects at the axial hole position of the flange; the design of the pouring and rising head structure reduces the situation of shrinkage cavity defects at the axial hole position of the flange.
Description
Technical Field
The utility model relates to the technical field of flange pouring structures, in particular to a pouring structure for preventing flange shrinkage.
Background
When casting is carried out, the position of the flange shaft hole of the common flange structure with the shaft hole in the middle is generally a casting head; the top end of a flange sand core cast by a conventional flange is of a planar structure at the position of a flange shaft hole, and a casting head with the bottom end being horizontal is formed at the position of the flange shaft hole by matching the flange sand core with an outer die; as shown in fig. 1; the casting head structure is easy to generate shrinkage hole defects at the shaft hole of the flange, and the defect positions are generally around the shaft hole of the flange, so that the whole product of the flange is unqualified in processing; therefore, a new pouring structure for preventing shrinkage defects at the shaft hole of the flange needs to be designed to reduce the occurrence of shrinkage defects at the shaft hole of the flange.
Disclosure of utility model
The utility model aims to solve the technical problem of providing a pouring structure for preventing flange shrinkage, which can solve the problem that a common flange with a shaft hole is easy to generate shrinkage hole defects at the position of the shaft hole after casting and forming.
In order to solve the technical problems, the technical scheme of the utility model is as follows: a casting structure for preventing a flange from shrinking is provided, a casting head is arranged at the center of the flange, and the casting head at the center of the flange is cut off to form a shaft hole; the innovation point is that: comprises a flange sand core;
The flange sand core is provided with an arc-shaped concave cavity at the top end at the position of the flange shaft hole, the arc-shaped concave cavity is of a hemispherical structure, and a casting head is formed at the position of the flange shaft hole.
Further, a casting head structure formed by casting and forming the arc-shaped concave cavity bottom at the top end of the flange sand core is flush with the inner wall of the flange shaft hole.
The utility model has the advantages that:
1) According to the utility model, the hemispherical concave cavity is formed at the casting head position at the top end of the flange sand core, when the flange casting molding is carried out, the molten metal can form a shrinkage cavity space at the hemispherical concave cavity, so that shrinkage defects are generated in the hemispherical concave cavity, the shrinkage defects are avoided at the position of the shaft hole of the flange, and then the casting head with the shrinkage defects at the position of the shaft hole of the flange is directly cut; the design of the casting head structure reduces the occurrence of shrinkage cavity defects at the position of the flange shaft hole.
Drawings
The utility model will be described in further detail with reference to the drawings and the detailed description.
Fig. 1 is a diagram of a conventional flange pouring structure.
FIG. 2 is a diagram of a pouring structure of the utility model for preventing flange shrinkage.
FIG. 3 is a diagram showing a structure of a flange formed after a pouring structure for preventing a flange from shrinking cold is processed.
Description of the embodiments
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The pouring structure for preventing the flange from shrinking is shown in fig. 2 and 3, a pouring head 1 is arranged in the center of the flange, and the pouring head in the center of the flange is cut off to form a shaft hole; comprises a flange sand core.
The top end position of the flange sand core, which is positioned at the position of the flange shaft hole, is provided with an arc-shaped concave cavity which is of a hemispherical structure, and the flange sand core forms a casting head 1 at the position of the flange shaft hole.
The casting head 1 formed at the bottom end of the arc-shaped concave cavity at the top end of the flange sand core after the flange is cast and molded is flush with the inner wall at the position of the flange shaft hole.
The working principle of the utility model is as follows: the hemispherical concave cavity is formed at the casting head position at the top end of the flange sand core, when the flange casting molding is carried out, a shrinkage cavity space is formed at the hemispherical concave cavity position by the molten metal, so that shrinkage cavity defects are generated in the hemispherical concave cavity, the shrinkage cavity defects are avoided at the shaft hole position of the flange, and then the casting head with the shrinkage cavity defects at the shaft hole position of the flange is directly cut; the design of the casting head structure reduces the occurrence of shrinkage cavity defects at the position of the flange shaft hole.
It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (2)
1. A casting structure for preventing a flange from shrinking is provided, a casting head is arranged at the center of the flange, and the casting head at the center of the flange is cut off to form a shaft hole; the method is characterized in that: comprises a flange sand core;
The flange sand core is provided with an arc-shaped concave cavity at the top end at the position of the flange shaft hole, the arc-shaped concave cavity is of a hemispherical structure, and a casting head is formed at the position of the flange shaft hole.
2. The pouring structure for preventing flange shrinkage according to claim 1, wherein: and a casting head formed at the bottom end of the arc-shaped concave cavity at the top end of the flange sand core after the flange is cast and molded is flush with the inner wall of the flange shaft hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323607702.XU CN222058752U (en) | 2023-12-28 | 2023-12-28 | Pouring structure for preventing flange from shrinking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323607702.XU CN222058752U (en) | 2023-12-28 | 2023-12-28 | Pouring structure for preventing flange from shrinking |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222058752U true CN222058752U (en) | 2024-11-26 |
Family
ID=93544655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323607702.XU Active CN222058752U (en) | 2023-12-28 | 2023-12-28 | Pouring structure for preventing flange from shrinking |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222058752U (en) |
-
2023
- 2023-12-28 CN CN202323607702.XU patent/CN222058752U/en active Active
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