CN216881589U - Cold wax core for butterfly valve body of investment casting low-temperature wax medium-thickness large product - Google Patents
Cold wax core for butterfly valve body of investment casting low-temperature wax medium-thickness large product Download PDFInfo
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- CN216881589U CN216881589U CN202123305955.2U CN202123305955U CN216881589U CN 216881589 U CN216881589 U CN 216881589U CN 202123305955 U CN202123305955 U CN 202123305955U CN 216881589 U CN216881589 U CN 216881589U
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Abstract
The utility model relates to a cold wax core for a butterfly valve body of a investment casting low-temperature wax medium-thickness large product, which is characterized in that: the cold wax core consists of a cold wax core body and a cold wax core sharp support, and the cold wax core comprises a cold wax core main body, a first cold wax core sharp support, a second cold wax core sharp support, a third cold wax core sharp support, a fourth cold wax core sharp support, a fifth cold wax core sharp support and a sixth cold wax core sharp support; first cold wax core point props, second cold wax core point props, third cold wax core point props, fourth cold wax core point props, fifth cold wax core point props and sixth cold wax core point props and equally divides and do not connect the lower extreme in cold wax core main part, and it is integrative to press into through butterfly valve body wax matrix. When the cold wax core wax mould is used, the cold wax core wax mould is completely cooled and placed in a mould of a thick large part of a valve body of a butterfly valve, and the sharp support is contacted with a large plane. The mould is drawn after the mould is closed and the wax is pressed, when the thick and big butterfly valve body wax mould of the product is cooled, the cold wax core can effectively prevent the wax from being locally overheated, so that the wax is uniformly shrunk, and the product is prevented from being deformed by the large plane shrinkage.
Description
Technical Field
The utility model relates to a cold wax core, in particular to a cold wax core for producing a butterfly valve body by investment casting of a low-temperature wax medium-thickness large part, and belongs to the technical field of auxiliary tools for low-temperature wax investment casting.
Background
Investment precision casting is a near-net-shape technology for producing high-quality precision castings, and is increasingly widely applied in industrial production. At present, thick and large products are gradually added into a low-temperature wax investment casting process, but for the thick and large products, after wax materials are formed by a mould, the wax mould is formed and shrunk and deformed due to uneven shrinkage of the wax materials, the production period of the products is prolonged, the production cost is increased, and the production efficiency is reduced. Therefore, the problem that the wax mould of the thick and large product shrinks inconsistently when being cooled so that the wax mould shrinks and deforms cannot be solved.
Disclosure of Invention
The utility model aims to provide a cold wax core for a butterfly valve body of a medium-thick large-size product in investment casting low-temperature wax, which can effectively solve the problem of shrinkage deformation caused by inconsistent shrinkage of the thick large-size product during cooling; the thick and large butterfly valve body trimming working hours are reduced, the production period is greatly shortened, and the production cost is reduced.
According to the technical scheme provided by the utility model: the utility model provides a thick major possession product butterfly valve body is with cold wax core in investment casting low temperature wax, the characteristic is: the cold wax core consists of a cold wax core body and a cold wax core sharp support, and the cold wax core comprises a cold wax core main body, a first cold wax core sharp support, a second cold wax core sharp support, a third cold wax core sharp support, a fourth cold wax core sharp support, a fifth cold wax core sharp support and a sixth cold wax core sharp support;
first cold wax core point props, second cold wax core point props, third cold wax core point props, fourth cold wax core point props, fifth cold wax core point props and sixth cold wax core point props and equally divides and do not connect the lower extreme in cold wax core main part, and it is integrative to press into through butterfly valve body wax matrix.
As a further improvement of the utility model, the upper end of the cold wax core body is provided with a radian which is 30 degrees.
As a further improvement of the utility model, the height of the cold wax core body is as follows: 30 mm.
As a further improvement of the utility model, the diameter of the contact surface of the first cold wax core sharp support and the cold wax core body is as follows: 4mm, taper: 33 °, end spherical, spherical radius: 0.5mm, height: 6 mm;
as a further improvement of the present invention, the center distance between the first cold wax core sharp support and the second cold wax core sharp support is: 22 mm.
As a further improvement of the present invention, the center distance between the first cold wax core supporter and the fourth cold wax core supporter is: 11 mm.
As a further improvement of the utility model, the cold wax core is made of environment-friendly paraffin.
Compared with the prior art, the utility model has the characteristics and advantages that:
the utility model aims to solve the problem that the shrinkage of the wax pattern of a thick and large product is inconsistent when the wax pattern is cooled so that the wax pattern shrinks and deforms; the cold wax core is placed in the mold cavity in the wax pressing process, so that the wax material can be prevented from being locally overheated during shrinkage, the cold wax core main body is utilized to promote the wax mold to shrink uniformly, the wax material shrinks uniformly, and the problem of shrinkage and deformation of the wax mold in actual production is effectively solved; and the thick and large butterfly valve body shaping working hours can be reduced, the production period is greatly shortened, and the production cost is reduced.
Drawings
FIG. 1 is a front view of a cold wax core;
FIG. 2 is a left side view of the cold wax core;
FIG. 3 is an assembly view of the cold wax core;
FIG. 4 is a sectional view of the cold wax core assembly;
FIG. 5 is a top view of a cold wax core wax pattern;
FIG. 6 is a bottom view of the cold wax core.
Description of reference numerals: 1-mould, 2-wax mould, 3-cold wax core, 3.1-cold wax core main body, 3.2-first cold wax core sharp support, 3.3-second cold wax core sharp support, 3.4-third cold wax core sharp support, 3.5-fourth cold wax core sharp support, 3.6-fifth cold wax core sharp support, 3.7-sixth cold wax core sharp support, 4-first cold wax core, 5-second cold wax core and 6-third cold wax core.
Detailed Description
The utility model is further described below with reference to the accompanying drawings.
As shown in figures 1-6, before pressing a butterfly valve body wax mold, the special cold wax core 3, the first cold wax core 4, the second cold wax core 5 and the third cold wax core 6 for the butterfly valve body are firstly pressed, and after the cold wax cores are completely cooled, the cold wax cores 3, the first cold wax core 4, the second cold wax core 5 and the third cold wax core 6 are placed in a mold cavity 1 sprayed with a release agent. A layer of thin release agent is evenly brushed on the inner cavity and the parting surface of the mould 1, and a special cold wax core body for the butterfly valve body is pressed before the wax mould 2 is pressed.
As shown in figure 6, the cold wax core for the butterfly valve body of the investment casting low-temperature wax medium-thickness large product is composed of a cold wax core body and a cold wax core sharp support. The cold wax core 3 comprises a cold wax core main body 3.1, a first cold wax core tip support 3.2, a second cold wax core tip support 3.3, a third cold wax core tip support 3.4, a fourth cold wax core tip support 3.5, a fifth cold wax core tip support 3.6 and a sixth cold wax core tip support 3.7.
First cold wax core point props 3.2, the cold wax core point of second props 3.3, the cold wax core point of third props 3.4, the cold wax core point of fourth props 3.5, the cold wax core point of fifth props 3.6 and the cold wax core point of sixth props 3.7 six cold wax core points and props evenly to be connected respectively at the lower extreme of cold wax core main part 3.1, and it is as an organic whole to suppress through butterfly valve body wax matrix 2.
The method comprises the specific pressing step of uniformly brushing a layer of thin release agent on the inner cavity and the parting surface of the mold 1, pressing the special cold wax core body 3.1 for the butterfly valve body before pressing the wax mold 2, and placing the cold wax core body 3.1 in the mold cavity of the mold 1 sprayed with the release agent after the cold wax core body 3.1 is completely cooled. And (3) contacting a first cold wax core point support 3.2, a second cold wax core point support 3.3, a third cold wax core point support 3.4, a fourth cold wax core point support 3.5, a fifth cold wax core point support 3.6 and a sixth cold wax core point support 3.7 with the large plane of the butterfly valve mould 1. And then, pressing the butterfly valve body wax mold 2, maintaining the pressure, and taking out the butterfly valve body wax mold after the butterfly valve body wax mold 2 is solidified.
As shown in fig. 1-2, preferably, the upper end of the cold wax core body 3.1 is provided with a radian of 30 °. The radian of 30 degrees is matched with the valve body of the butterfly valve. The cold wax core body 3.1 height is: 30 mm.
As shown in fig. 6, the first cold wax core supporter 3.2, the second cold wax core supporter 3.3, the third cold wax core supporter 3.4, the fourth cold wax core supporter 3.5, the fifth cold wax core supporter 3.6, and the sixth cold wax core supporter 3.7 have the same structure. Wherein the diameter of the contact surface between the first cold wax core sharp support 3.2 and the cold wax core body 3.1 is: 4mm, taper: 33 °, end spherical, spherical radius: 0.5mm, height: 6 mm; the center distance between the first cold wax core sharp support 3.2 and the second cold wax core sharp support 3.3 is as follows: 22 mm; the center distance between the first cold wax core sharp support 3.2 and the fourth cold wax core sharp support 3.5 is as follows: 11 mm.
The material of the cold wax core is environment-friendly paraffin, namely stearic acid.
The thermal stability of the cold wax core is as follows: 32 ℃;
the cold wax core bending strength is as follows: 3.6 MPA;
the cold wax core wire shrinkage rate is as follows: 0.74 percent;
and dropping point of the cold wax core: 50-51 ℃;
the cold wax core fluidity is as follows: 110.2 MM;
the cold wax core coating property: 0.59 MM;
ash content of the cold wax core: 0.09 percent.
When the cold wax core wax mould is used, the cold wax core wax mould is completely cooled and placed in a mould at the thick part of the valve body of the butterfly valve, and the sharp support is contacted with the large plane. The mould is drawn after mould closing and wax pressing, when the thick large butterfly valve body wax mould of the product is cooled, the cold wax core can effectively prevent local overheating of wax materials, so that the wax materials shrink uniformly, the large plane of the product is prevented from being deformed by shrinkage, the problem of deformation of the thick large part of the butterfly valve body due to shrinkage is effectively solved, the follow-up modification working hours are reduced, the produced finished product is reduced, the production period is shortened, and the production cost is reduced.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the utility model can be made, and equivalents and modifications of some features of the utility model can be made without departing from the spirit and scope of the utility model.
Claims (7)
1. The utility model provides a thick major possession product butterfly valve body is with cold wax core in investment casting low temperature wax, characterized by: the cold wax core consists of a cold wax core body and a cold wax core sharp support, wherein the cold wax core (3) comprises a cold wax core main body (3.1), a first cold wax core sharp support (3.2), a second cold wax core sharp support (3.3), a third cold wax core sharp support (3.4), a fourth cold wax core sharp support (3.5), a fifth cold wax core sharp support (3.6) and a sixth cold wax core sharp support (3.7);
first cold wax core point props (3.2), second cold wax core point props (3.3), third cold wax core point props (3.4), fourth cold wax core point props (3.5), fifth cold wax core point props (3.6) and sixth cold wax core point props (3.7) and evenly connects respectively at the lower extreme of cold wax core main part (3.1), presses into integratively through wax matrix (2).
2. The cold wax core for butterfly valve bodies of investment casting low-temperature wax medium-thickness large products according to claim 1, wherein: the upper end of the cold wax core body (3.1) is provided with a radian which is 30 degrees.
3. The cold wax core for butterfly valve bodies of investment casting low-temperature wax medium-thickness large products according to claim 1, wherein: the cold wax core body (3.1) is high: 30 mm.
4. The cold wax core for butterfly valve bodies of investment casting low-temperature wax medium-thickness large products according to claim 1, wherein: the diameter of the contact surface between the first cold wax core sharp support (3.2) and the cold wax core body (3.1) is as follows: 4mm, taper: 33 °, end spherical, spherical radius: 0.5mm, height: 6 mm.
5. The cold wax core for the valve body of a butterfly valve for investment casting of a low-temperature wax medium-thick large product according to claim 1, wherein: the center distance between the first cold wax core sharp support (3.2) and the second cold wax core sharp support (3.3) is as follows: 22 mm.
6. The cold wax core for the valve body of a butterfly valve for investment casting of a low-temperature wax medium-thick large product according to claim 1, wherein: the center distance between the first cold wax core sharp support (3.2) and the fourth cold wax core sharp support (3.5) is as follows: 11 mm.
7. The cold wax core for the valve body of a butterfly valve for investment casting of a low-temperature wax medium-thick large product according to claim 1, wherein: the cold wax core is made of environment-friendly paraffin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123305955.2U CN216881589U (en) | 2021-12-24 | 2021-12-24 | Cold wax core for butterfly valve body of investment casting low-temperature wax medium-thickness large product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123305955.2U CN216881589U (en) | 2021-12-24 | 2021-12-24 | Cold wax core for butterfly valve body of investment casting low-temperature wax medium-thickness large product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216881589U true CN216881589U (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123305955.2U Active CN216881589U (en) | 2021-12-24 | 2021-12-24 | Cold wax core for butterfly valve body of investment casting low-temperature wax medium-thickness large product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216881589U (en) |
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2021
- 2021-12-24 CN CN202123305955.2U patent/CN216881589U/en active Active
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