CN114535517B - Forming method of revolving body casting - Google Patents
Forming method of revolving body casting Download PDFInfo
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- CN114535517B CN114535517B CN202011350489.7A CN202011350489A CN114535517B CN 114535517 B CN114535517 B CN 114535517B CN 202011350489 A CN202011350489 A CN 202011350489A CN 114535517 B CN114535517 B CN 114535517B
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- 238000005266 casting Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 18
- 230000009977 dual effect Effects 0.000 claims abstract description 6
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 230000007547 defect Effects 0.000 description 9
- 239000007787 solid Substances 0.000 description 5
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention belongs to the technical field of casting, and particularly relates to a forming method of a revolving body casting. The molding method comprises a pouring channel design and a casting procedure, wherein the pouring channel design comprises the following steps: dual runner and dual sprue design: the large end gap sprue and the small end gap sprue are communicated through a second cross runner, and the large end and the small end of the casting adopt different numbers of sprue. The method can effectively solve the problem that the small end of the rotator casting is overheated due to the quantity of pouring channels, so that the formed small end of the rotator casting is loose, shrinkage cavity and the like, and effectively improves the product quality.
Description
Technical Field
The invention belongs to the technical field of casting, and particularly relates to a forming method of a revolving body casting.
Background
The plane is internally provided with a straight line and a curve (or straight line), the straight line is taken as a rotating shaft, the curve (or straight line) is taken as a generating line to rotate for one circle, the curved surface formed by the track of the curve is taken as a rotating surface, and the solid contained by the rotating surface is the rotating body. Common gyrorotor includes cylinder, cone, sphere, ellipsoid of revolution, paraboloid of revolution (body) and hyperboloid of revolution (body) etc. (research of general gyrorotor in engineering, guo Qun, machinery, 2006, 33 st roll, S1 st phase, 47 left column, 1 st section, 1 st-5 th row, publication date, 2006, 12 th month, 31 th day).
The revolving body castings are widely applied to civil, aerospace, weapons and other military and civil products fields, such as wheels, aircraft skins, missile shells and the like. The formed revolving body products, in particular to large revolving body products, play a vital role in national defense industries such as machinery, electronics, chemical industry, automobiles, aerospace and the like.
However, the existing process is adopted for molding, and the prepared revolving body castings have the defects of looseness, shrinkage cavity and the like, so that the product quality is affected.
Disclosure of Invention
In view of the above, the invention aims to provide a double pouring gate molding method of a revolving body casting, which aims at the problems that the large end and the small end of the revolving body casting adopt different pouring gate numbers respectively, and the small end of the casting is overheated due to the excessive number of gap pouring gates can be effectively avoided, so that the molded revolving body casting has no defects of looseness, shrinkage cavity and the like, and the product quality is effectively improved.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the molding method of the revolving body casting comprises the steps of pouring channel design and casting process, wherein the pouring channel design comprises the following steps:
dual runner and dual sprue design: the large end gap sprue and the small end gap sprue are communicated through a second cross runner, and the large end and the small end of the casting adopt different numbers of sprue.
Further, the cross gate is circular.
Further, the cross section size of the cross runner adjacent to the small end gap runner is smaller than the cross section size of the cross runner adjacent to the large end gap runner, and the diameter of the small end gap runner is smaller than or equal to the diameter of the large end gap runner.
Further, the runner design further includes:
number of pouring channels is designed: and designing the large end gap pouring gate and the small end gap pouring gate quantity of the casting according to the large end outer diameter, the small end outer diameter and the gap pouring gate effective feeding distance of the revolving body casting, wherein the small end gap pouring gate quantity is less than or equal to the large end gap pouring gate quantity.
Further, the runner design further includes:
pouring gate position design: the large end gap runner and the small end gap runner are in a certain angle, the small end gap runner is distributed among the large end gap runners, and the large end gap runner and the small end gap runner are symmetrically distributed along the circumference of the casting.
In the invention, the certain angle ensures that the large end gap runner and the small end gap runner are not right opposite.
The invention has the beneficial effects that:
the revolving body casting formed by the method disclosed by the invention has no defects of loosening, shrinkage cavity and the like, and the product quality is effectively improved. The method is simple and is beneficial to realizing industrial production.
Drawings
FIG. 1 is a schematic view of a runner of a solid of revolution casting of example 1; wherein, 1 is a riser, 2 is a small end gap sprue, 3 is a second annular runner, 4 is a large end gap sprue, and 5 is a first annular runner;
FIG. 2 is an X-ray flaw detection diagram of the small end of the solid of revolution casting prepared in example 1;
FIG. 3 is a schematic view of a runner of the solid of revolution casting of example 2; wherein, 1 is a riser, 2 is a small end gap sprue, 3 is a second annular runner, 4 is a large end gap sprue, and 5 is a first annular runner;
FIG. 4 is an X-ray flaw detection diagram of the small end of the solid of revolution casting obtained in example 2; .
Detailed Description
The examples are presented for better illustration of the present invention, but are not intended to limit the scope of the present invention to the examples. Those skilled in the art will appreciate that various modifications and adaptations of the embodiments described above are possible in light of the above teachings and are intended to be within the scope of the invention.
The following examples take the casting of a revolution body with a large end having an outer diameter of 1000mm, a small end having an outer diameter of 500mm, a height of 800mm and a wall thickness of 20mm as an example.
Example 1
The embodiment adopts ZL205A alloy molding revolving body casting, and comprises a pouring channel design and a casting procedure, wherein the pouring channel design comprises:
number of pouring channels is designed: the effective feeding distance of ZL205A alloy is 4-6 times of the gap width, the outer diameter of the large end of the revolving body casting is 1000mm, the outer diameter of the small end of the revolving body casting is 500mm, and the gap runner width is designed to be 40mm, so that the maximum distance between two gap runners is 480mm. Therefore, 8 gap pouring channels are designed at the large end of the revolving body casting, and 4 gap pouring channels are designed at the small end of the revolving body casting;
pouring gate position design: the large end gap runner and the small end gap runner form a dislocation angle of 22.5 degrees, and the large end gap runner and the small end gap runner are symmetrically distributed along the circumference of the casting;
and (3) cross gate design: the large end gap runner and the small end gap runner are communicated through an annular cross runner, the outer diameter of the cross runner adjacent to the small end gap runner (hereinafter referred to as a second cross annular runner with the cross section size of 70mm multiplied by 70 mm) is less than that of the cross runner adjacent to the large end gap runner (hereinafter referred to as a first annular cross runner with the cross section size of 90mm multiplied by 90 mm), and the size of the small end gap sprue (the diameter of the small end gap sprue is 60 mm) is less than or equal to that of the large end gap sprue (the diameter of the small end gap sprue is 80 mm);
the runner of this embodiment is shown in fig. 1, where 1 is a riser, 2 is a small end gap sprue, 3 is a second annular runner, 4 is a large end gap sprue, and 5 is a first annular runner.
Casting is then carried out.
The obtained revolving body casting is detected whether to have the defects of looseness, shrinkage cavity and the like by an X-ray real-time detection technology, and the result is shown in figure 2.
As can be seen from FIG. 2, the small end of the rotator casting prepared by the embodiment has no defects such as looseness, shrinkage cavity and the like. Therefore, the revolving body casting formed by the method has no defects of loosening, shrinkage cavity and the like, and the product quality is effectively improved.
Example 2
The embodiment adopts ZL114A alloy to form a revolving body casting, and comprises a pouring channel design and a casting procedure, wherein the pouring channel design comprises:
the specific design scheme is as follows:
number of pouring channels is designed: the effective feeding distance of ZL205A alloy can be up to about 8 times of the gap width, the outer diameter of the large end of the revolving body casting is 1000mm, the outer diameter of the small end of the revolving body casting is 500mm, and the gap runner width is designed to be 40mm, so that the maximum distance between two gap runners is 640mm. Therefore, 6 gap pouring channels are designed at the large end of the revolving body casting, and 3 gap pouring channels are designed at the small end of the revolving body casting;
pouring gate position design: the large end gap runner and the small end gap runner form a 30-degree dislocation angle, and the large end gap runner and the small end gap runner are symmetrically distributed along the circumference of the casting;
and (3) cross gate design: the large end gap runner and the small end gap runner are communicated through a circular annular cross runner, the outer diameter of the cross runner adjacent to the small end gap runner (hereinafter referred to as a second annular cross runner with the cross section dimension of 65mm multiplied by 65 mm) is less than that of the cross runner adjacent to the large end gap runner (hereinafter referred to as a first annular cross runner with the cross section dimension of 80mm multiplied by 80 mm), and the dimension of the small end gap sprue (the diameter of the small end gap sprue is 65 mm) is less than or equal to that of the large end gap sprue (the diameter of the small end gap sprue is 75 mm);
the final design of the double runner is shown in fig. 3.
The runner of this embodiment is shown in fig. 1, where 1 is a riser, 2 is a small end gap sprue, 3 is a second annular runner, 4 is a large end gap sprue, and 5 is a first annular runner.
Casting is then carried out.
The obtained revolving body casting is detected whether to have the defects of looseness, shrinkage cavity and the like by an X-ray real-time detection technology, and the result is shown in figure 4.
As can be seen from FIG. 4, the small end of the rotator casting prepared by the embodiment has no defects such as looseness, shrinkage cavity and the like. Therefore, the revolving body casting formed by the method has no defects of loosening, shrinkage cavity and the like, and the product quality is effectively improved.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (1)
1. The molding method of the revolving body casting comprises pouring gate design and casting procedures and is characterized in that the revolving body casting is provided with a large end and a small end, the small end is upwards arranged, a riser is positioned at the uppermost end of the corresponding position of the casting, the lower end of the riser is obliquely provided with a small end gap straight pouring gate along the corresponding outer surface of the casting, the lower end of the small end gap straight pouring gate is communicated with a second annular cross gate, the lower end of the second annular cross gate is communicated with a large end gap straight pouring gate obliquely arranged along the outer surface of the corresponding position of the casting, and the lower end of the large end gap straight pouring gate is communicated with a first annular cross gate;
the runner design includes:
dual runner and dual sprue design: the large end gap straight pouring gate and the small end gap straight pouring gate are communicated through a second transverse pouring gate, and the large end and the small end of the casting adopt different numbers of straight pouring gates; the cross gate is circular;
the runner design further includes:
pouring gate position design: a certain angle is formed between the large end gap runner and the small end gap runner, and the certain angle ensures that the large end gap runner and the small end gap runner are not right opposite; the lower ends of the small end gap runners are distributed between the upper ends of the large end gap runners, and the large end gap runners and the small end gap runners are symmetrically distributed along the circumference of the casting; the cross section size of the cross runner adjacent to the small end gap runner is smaller than that of the cross runner adjacent to the large end gap runner, and the diameter of the small end gap runner is smaller than that of the large end gap runner;
number of pouring channels is designed: and designing the large end gap pouring gate and the small end gap pouring gate quantity of the casting according to the large end outer diameter, the small end outer diameter and the gap pouring gate effective feeding distance of the revolving body casting, wherein the small end gap pouring gate quantity is less than the large end gap pouring gate quantity.
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| CN202011350489.7A CN114535517B (en) | 2020-11-26 | 2020-11-26 | Forming method of revolving body casting |
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| CN202011350489.7A CN114535517B (en) | 2020-11-26 | 2020-11-26 | Forming method of revolving body casting |
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| CN114535517B true CN114535517B (en) | 2024-04-12 |
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