CN217666221U - Directional blade wax matrix structure - Google Patents
Directional blade wax matrix structure Download PDFInfo
- Publication number
- CN217666221U CN217666221U CN202221458255.9U CN202221458255U CN217666221U CN 217666221 U CN217666221 U CN 217666221U CN 202221458255 U CN202221458255 U CN 202221458255U CN 217666221 U CN217666221 U CN 217666221U
- Authority
- CN
- China
- Prior art keywords
- wax
- blade
- wax matrix
- crystal
- wax mold
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
The utility model discloses a directional blade wax matrix structure aims at effectively solving the brilliant defect problem of outcrop that directional blade appears advancing, exhaust limit department. Therefore, the embodiment of the utility model provides a directional blade wax matrix structure, including blade wax matrix, chassis wax matrix and the brilliant riser wax matrix of column, the brilliant riser wax matrix of column is connected the blade wax matrix with between the chassis wax matrix, the blade wax matrix includes top flange, lower flange and blade, the left side and the right side of blade are equipped with the exhaust edge and the limit of admitting air of leanin respectively, the blade wax matrix with still be connected with two and select brilliant ware wax matrixes, two between the wax matrix of chassis select brilliant ware wax matrix to be located respectively the both sides of the brilliant riser wax matrix of column, the single crystal grain that the brilliant ware wax matrix of selection elected can grow into in the blade of blade wax matrix.
Description
Technical Field
The utility model belongs to the technical field of high temperature alloy investment casting, especially, relate to a directional blade wax matrix structure.
Background
In the production of turbine directional blades, it is common to add a lift plate to the lower end of the blade and the quench bottom, the lift plate having a width equal to the blade body and a shape similar to the blade body. When in pouring, the metal liquid in the vertical crystallization plate is cooled by the chilling bottom plate, and a large amount of columnar crystal grains grow upwards and enter the blade body. However, for some directional blades, because the air inlet and outlet edges (especially the air outlet edge) of the blade body are in a significant contraction state, the grain boundary of the columnar crystal grains close to the two edges is inevitably intersected with the air inlet and outlet edges inclined inwards in the vertical upward growth process to form so-called outcrop crystal defects, so that the technical standard is not met and the judgment is abandoned.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a directional blade wax matrix structure, aims at effectively solving the brilliant defect problem of outcrop that directional blade appears in advancing, exhaust limit department.
Therefore, the directional blade wax mold structure provided by the embodiment of the utility model comprises a blade wax mold, a chassis wax mold and a columnar crystallized vertical plate wax mold, wherein the columnar crystallized vertical plate wax mold is connected between the blade wax mold and the chassis wax mold, the blade wax mold comprises an upper edge plate, a lower edge plate and a blade body, the left side and the right side of the blade body are respectively provided with an inward-inclined exhaust edge and an air inlet edge, two crystal selector wax molds are further connected between the blade wax mold and the chassis wax mold, the two crystal selector wax molds are respectively positioned at the two sides of the columnar crystallized vertical plate wax mold, and single crystal grains selected by the crystal selector wax molds can grow into the blade body of the blade wax mold;
each crystal selector wax mold is connected with the lower edge plate of the blade wax mold through a seeding transition section, the width k of the seeding transition section of the crystal selector wax mold positioned at the leftmost side is greater than a + d, and the width k1 of the seeding transition section of the crystal selector wax mold positioned at the rightmost side is greater than a1+ d1;
wherein a is the distance from the exhaust edge to the left edge of the lower edge plate, a1 is the distance from the air inlet edge to the right edge of the lower edge plate, d is the chord width difference value of the upper end and the lower end of the exhaust edge, and d1 is the chord width difference value of the upper end and the lower end of the air inlet edge.
Specifically, the crystal selector wax mold adopts a spiral crystal selector wax mold.
Specifically, the left side and the right side of the columnar crystal-pulling vertical plate wax mold are respectively connected with the seeding transition section of the corresponding crystal selector wax mold.
Specifically, the orthographic projection of the blade body on the lower edge plate is located in the orthographic projection of the two seeding transition sections and the columnar crystal-growing vertical plate wax mold on the lower edge plate, and the two sections are similar in shape.
Specifically, the seeding transition section of the right-side crystal selector wax mold extends to each convex edge on the right side of the lower flange plate, and the seeding transition section of the left-side crystal selector wax mold extends to each convex edge on the left side of the lower flange plate.
Compared with the prior art, the utility model discloses at least one embodiment has following beneficial effect: the original columnar crystal-pulling vertical plate wax mold is narrowed, two crystal selector wax molds are additionally arranged on two sides of a crystal inlet edge and a crystal outlet edge of the blade wax mold, and the sizes of seeding transition sections of the two crystal selectors are controlled, so that the phenomenon that narrow crystal grains grow out of the side face of a blade body at the positions of the crystal inlet edge and the crystal outlet edge can be avoided, and the directional columnar crystal structure without outcrop crystals is obtained.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of a directional blade wax pattern structure provided by an embodiment of the present invention;
wherein: 1. a blade wax pattern; 101. an upper edge plate; 102. a lower flange plate; 103. a leaf body; 104. an air exhaust edge; 105. an air inlet side; 2. a chassis wax pattern; 3. a vertical plate wax mold for columnar crystal crystallization; 4. selecting a wax mould of a crystal selector; 5. a seeding transition section.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1, a directional blade wax pattern structure comprises a blade wax pattern 1, a chassis wax pattern 2 and a columnar crystallized vertical plate wax pattern 3, wherein the columnar crystallized vertical plate wax pattern 3 is connected between the blade wax pattern 1 and the chassis wax pattern 2, the blade wax pattern 1 comprises an upper edge plate 101, a lower edge plate 102 and a blade body 103, the left side and the right side of the blade body 103 are respectively provided with an inward-inclined exhaust edge 104 and an inward-inclined intake edge 105, two crystal selector wax patterns 4 are further connected between the blade wax pattern 1 and the chassis wax pattern 2, the two crystal selector wax patterns 4 are respectively positioned on the left side and the right side of the columnar crystallized vertical plate wax pattern 3, and single crystal grains selected by the crystal selector wax patterns 4 can grow into the blade body 103 of the blade wax pattern 1; the crystal selector wax mold 4 may be a spiral crystal selector wax mold, or other types of crystal selector wax molds 4 may be used as long as a single crystal structure can be obtained.
Each crystal selector wax mold 4 is connected with the lower edge plate 102 of the blade wax mold 1 through a seeding transition section 5, the width k = a + b of the seeding transition section 5 of the crystal selector wax mold 4 on the left side, and d < b, wherein a is the distance from the exhaust edge 104 to the left edge of the lower edge plate 102, a1 is the distance from the air inlet edge 105 to the right edge of the lower edge plate 102, and d is the chord width difference value of the upper end and the lower end of the exhaust edge 104. This is because if the width k of the seeding transition section 5 is less than a + d, that is, b is less than d, the width (b-d) of the upper end of the crystal grain is less than 0, and the grain boundary of the crystal grain intersects the gas discharge edge 104, so-called outcrop defects occur, that is, d = c · tan θ (c is the distance between the upper and lower edge plates, that is, the throat width, and θ is the gas discharge edge inclination angle). Similarly, the seed selector and seeding design on the gas inlet edge 105 side can be referred to the gas outlet edge 104, but the width of the seeding transition 5 can be reduced due to the smaller inward contraction angle.
This embodiment is through doing original columnar crystal rise riser wax matrix 3 narrowly, and advance in blade 103 both sides, exhaust edge 104 department increases two selection brilliant ware wax matrixes 4, and control through two selection brilliant ware seeding changeover portion 5 sizes, make during the pouring, the metal liquid in the columnar crystal rise riser wax matrix 3 is through chilling the bottom plate cooling, produce a large amount of columnar crystalline grains and upwards grow, get into the blade, the single crystal crystalline grain of selecting brilliant ware wax matrix 4 to elect through both sides then occupies blade body air inlet edge and exhaust edge position respectively simultaneously, reach effectively avoid advancing, the brilliant purpose of outcrop appears in the position on exhaust edge, thereby obtain the brilliant directional columnar crystal structure of no outcrop.
In actual design, the left side and the right side of the columnar crystal-pulling vertical plate wax mold 3 are respectively connected with the seeding transition section 5 of the corresponding crystal selector wax mold 4, the orthographic projection of the blade body 103 on the lower edge plate 102 is positioned in the orthographic projection of the two seeding transition sections 5 and the columnar crystal-pulling vertical plate wax mold 3 on the lower edge plate 102, and the shapes of the two are similar. By the design, a more optimal growth path of the crystal grains can be ensured, interference caused by different shapes can be avoided, and the structure can be further optimized.
Referring to fig. 1, specifically, the seeding transition section 5 of the right-side crystal selector wax mold 4 needs to extend to each convex edge on the right side of the lower edge plate 102, and the seeding transition section 5 of the left-side crystal selector wax mold 4 needs to extend to each convex edge on the left side of the lower edge plate 102, so that the design can effectively avoid mixed crystals with disordered crystal directions at the edges of the edge plate, and the mixed crystals grow into the blade body 103.
In addition, in order to ensure that the grain size meets the technical standard requirement, the value of b is required to be less than or equal to b M Wherein b is M The width of the columnar crystal grains is smaller than the maximum grain width b allowed by the technical standard because the middle columnar crystal grains do not have the risk of being outcrop crystals M For this purpose, the distance between the individual seed selectors and the width of the seeding transition 5 can be reduced by a suitable amount.
In addition to other claims, if a numerical range is disclosed, the disclosed numerical range is a preferred numerical range, and any person skilled in the art should understand that: the preferred ranges are merely those values which are obvious or representative of the technical effect which can be achieved. Since the number of the numerical values is too large to be exhaustive, the present invention discloses some numerical values to exemplify the technical solutions of the present invention, and the numerical values listed above should not be construed as limiting the scope of the present invention.
Also, above-mentioned the utility model discloses if disclose or related to mutually fixed connection's spare part or structure, then, except that other the note, fixed connection can understand: a detachable fixed connection (for example using bolts or screws) is also understood as: non-detachable fixed connections (e.g. riveting, welding), but of course, fixed connections to each other may also be replaced by one-piece structures (e.g. manufactured integrally using a casting process) (unless it is obviously impossible to use an integral forming process).
In addition, the terms used in any aspect of the present disclosure as described above to indicate positional relationships or shapes include similar, analogous, or approximate states or shapes unless otherwise stated. The utility model provides an arbitrary part both can be assembled by a plurality of solitary component parts and form, also can be the solitary part that the integrated into one piece technology was made.
The above examples are only examples for clearly illustrating the present invention and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. Nor is it intended to be exhaustive of all embodiments. And obvious changes and modifications may be made without departing from the scope of the present invention.
Claims (5)
1. The utility model provides an orientation blade wax matrix structure, includes blade wax matrix (1), chassis wax matrix (2) and the brilliant riser wax matrix of column (3), the brilliant riser wax matrix of column (3) are connected blade wax matrix (1) with between chassis wax matrix (2), blade wax matrix (1) includes top flange (101), lower flange (102) and blade body (103), the left side and the right side of blade body (103) are equipped with exhaust edge (104) and the edge of admitting air (105) of leanin respectively, its characterized in that: two crystal selector wax molds (4) are further connected between the blade wax mold (1) and the chassis wax mold (2), the two crystal selector wax molds (4) are respectively positioned on two sides of the columnar crystal-pulling vertical plate wax mold (3), and single crystal grains selected by the crystal selector wax molds (4) can grow into a blade body (103) of the blade wax mold (1);
each crystal selector wax mold (4) is connected with the lower edge plate (102) of the blade wax mold (1) through a seeding transition section (5), the width k of the seeding transition section (5) of the crystal selector wax mold (4) positioned at the leftmost side is greater than a + d, and the width k1 of the seeding transition section (5) of the crystal selector wax mold (4) positioned at the rightmost side is greater than a1+ d1;
wherein a is the distance from the exhaust edge (104) to the left edge of the lower edge plate (102), a1 is the distance from the air inlet edge (105) to the right edge of the lower edge plate (102), d is the chord width difference between the upper end and the lower end of the exhaust edge (104), and d1 is the chord width difference between the upper end and the lower end of the air inlet edge (105).
2. The directional blade wax pattern structure of claim 1, wherein: the crystal selector wax mold (4) adopts a spiral crystal selector wax mold.
3. The directional blade wax pattern structure of claim 1, wherein: the left side and the right side of the columnar crystal-pulling vertical plate wax mold (3) are respectively connected with the corresponding seeding transition section (5) of the crystal selector wax mold (4).
4. The directional blade wax pattern structure of claim 1, wherein: the orthographic projection of the blade body (103) on the lower edge plate (102) is positioned in the orthographic projection of the two seeding transition sections (5) and the columnar crystallized vertical plate wax mold (3) on the lower edge plate (102), and the shapes of the two sections are similar.
5. The directional blade wax pattern structure of claim 1, wherein: the seeding transition section (5) of the right-side crystal selector wax mold (4) extends to each outer convex corner on the right side of the lower edge plate (102), and the seeding transition section (5) of the left-side crystal selector wax mold (4) extends to each outer convex corner on the left side of the lower edge plate (102).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221458255.9U CN217666221U (en) | 2022-06-13 | 2022-06-13 | Directional blade wax matrix structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221458255.9U CN217666221U (en) | 2022-06-13 | 2022-06-13 | Directional blade wax matrix structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217666221U true CN217666221U (en) | 2022-10-28 |
Family
ID=83709896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221458255.9U Active CN217666221U (en) | 2022-06-13 | 2022-06-13 | Directional blade wax matrix structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217666221U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115889687A (en) * | 2022-11-09 | 2023-04-04 | 中国航发沈阳黎明航空发动机有限责任公司 | Wax mold combination method for single crystal conjoined guide blade air inlet edge seeding |
-
2022
- 2022-06-13 CN CN202221458255.9U patent/CN217666221U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115889687A (en) * | 2022-11-09 | 2023-04-04 | 中国航发沈阳黎明航空发动机有限责任公司 | Wax mold combination method for single crystal conjoined guide blade air inlet edge seeding |
| CN115889687B (en) * | 2022-11-09 | 2024-05-17 | 中国航发沈阳黎明航空发动机有限责任公司 | Wax mould combination method for single crystal conjuncted guide vane air inlet edge seeding |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN217666221U (en) | Directional blade wax matrix structure | |
| CN111940679B (en) | Design method of double-linkage directional hollow blade gating system | |
| CN217666220U (en) | Directional blade wax matrix structure | |
| CN113089078A (en) | Casting method for preparing hollow large-size duplex block-cast single crystal guide blade by seed crystal method | |
| CN115026243B (en) | Control method for outcrop crystals of directional blades | |
| US20090293994A1 (en) | High thermal gradient casting with tight packing of directionally solidified casting | |
| CN113564716B (en) | Single crystal high temperature alloy rotor blade and preparation method thereof | |
| EP0059549B1 (en) | Method of casting an article | |
| RU2532621C1 (en) | Device for casting of turbine blade with monocrystalline structure | |
| CN110306237A (en) | A method of designing efficient crystal selector | |
| CN217018474U (en) | Single crystal blade seeding system | |
| CN217666228U (en) | Single crystal guide blade wax mold structure | |
| US5269365A (en) | Casting mold for single crystal solidification casting | |
| US11931801B2 (en) | Multi-grain selector devices, methods for manufacturing columnar grained articles using the selector devices, and columnar grained articles manufactured using the selector devices | |
| CN209614206U (en) | The sectionally assembled seperated special-shaped crystallizer of electroslag smelting casting blade multilayer | |
| CN113560544B (en) | Directional blade and columnar crystal structure optimization method thereof | |
| CN207806550U (en) | A kind of crystallizer for refining ingot solidification tissue | |
| CN115055641B (en) | Single crystal guide vane and investment precision casting method thereof | |
| EP0066971A2 (en) | Method of casting an article | |
| CN113564715B (en) | Crystal selection method of single crystal high-temperature alloy and single crystal high-temperature alloy casting | |
| CN102352482A (en) | Preparation method for Ni-Cr-Si sputtering targets for metal resistance films | |
| CN217192414U (en) | Wax mold structure for large-size directional blade of heavy-duty gas turbine | |
| CN115673243A (en) | Single crystal guide blade and precision casting method thereof | |
| JP2020138223A (en) | Manufacturing method and manufacturing device for metal continuously cast bar | |
| CN219665053U (en) | Gravity casting pouring basin |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |