CN113600747A - Method for manufacturing multi-layer single crystal wax mould module of ring block type structural component - Google Patents
Method for manufacturing multi-layer single crystal wax mould module of ring block type structural component Download PDFInfo
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- CN113600747A CN113600747A CN202110973867.5A CN202110973867A CN113600747A CN 113600747 A CN113600747 A CN 113600747A CN 202110973867 A CN202110973867 A CN 202110973867A CN 113600747 A CN113600747 A CN 113600747A
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- wax
- layer
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- crystal
- leading section
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- 239000013078 crystal Substances 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 15
- 238000005520 cutting process Methods 0.000 claims abstract description 15
- 239000011159 matrix material Substances 0.000 claims abstract description 13
- 238000002425 crystallisation Methods 0.000 claims abstract description 8
- 230000008025 crystallization Effects 0.000 claims abstract description 8
- 239000010410 layer Substances 0.000 description 33
- 238000005266 casting Methods 0.000 description 7
- 239000000956 alloy Substances 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 238000010899 nucleation Methods 0.000 description 3
- 239000002356 single layer Substances 0.000 description 3
- 230000008646 thermal stress Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/02—Lost patterns
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C7/00—Patterns; Manufacture thereof so far as not provided for in other classes
- B22C7/005—Adjustable, sectional, expandable or flexible patterns
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Abstract
A method for manufacturing a multilayer single crystal wax mould module of a ring block type structural component comprises the following steps: adding a crystal-leading section replacement block in a wax mould structure; when the wax mould is pressed, if the crystal-leading section replacing block is not used, the pressed wax mould is a wax mould matrix with a crystal-leading section; when the wax mould is pressed, if the crystal-leading section replacing block is used, the pressed wax mould is a wax mould daughter without the crystal-leading section; vertically cutting off the riser parts of the wax mould parent body and the wax mould daughter along the cutting line for later use; splicing the wax pattern matrix with the dead head cut off and a complete wax pattern daughter into a double-layer wax pattern; splicing the wax pattern parent body with the dead head removed, the wax pattern daughter with the dead head removed and a complete wax pattern daughter into a three-layer wax pattern; and the spliced double-layer wax molds or three-layer wax molds are combined by using an auxiliary tool, so that the axis of the crystal-leading section of the wax mold is vertical to the crystallization chassis, and the combination scheme of the double-layer wax molds or three-layer wax molds is that 4 pieces of each group are annularly and uniformly distributed.
Description
Technical Field
The invention belongs to the technical field of manufacturing of parts of aero-engines, and particularly relates to a method for manufacturing a multilayer single crystal wax mold module of a ring block type structural component.
Background
With the annual improvement of the performance requirements of aero-engines, part of structural members of the engines need to be subjected to frequent thermal shock and thermal circulation, and the internal thermal stress of parts changes frequently, so that for conventional equiaxial crystal ring block structural members, due to the existence of internal crystal boundaries, the single crystal ring block structural members cannot bear the thermal stress changes for a long time, but can bear the thermal stress changes for a long time, and therefore the requirements of the single crystal ring block structural members are also improved year by year.
However, when the conventional single-layer single-crystal wax pattern module manufacturing method is adopted, the process yield of the wax pattern module is low, the consumption of the master alloy of each casting is large, and the cost of the master alloy for single-crystal casting is high, so that the development and application of the ring block structural member formed by single-crystal casting are severely restricted.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a method for manufacturing a multilayer single-crystal wax mould module of a ring block structural member, which can improve the process yield of the wax mould module by 1-2 times compared with the conventional method for manufacturing a single-layer single-crystal wax mould module, effectively improve the utilization rate of master alloy for single crystal casting, and further promote the development and application of the ring block structural member formed by single crystal casting.
In order to achieve the purpose, the invention adopts the following technical scheme: a method for manufacturing a multilayer single crystal wax mould module of a ring block type structural member comprises the following steps:
the method comprises the following steps: adding a crystal-leading section replacement block in a wax mould structure; when the wax mould is pressed, if the crystal-leading section replacing block is not used, the pressed wax mould is a wax mould matrix with a crystal-leading section; when the wax mould is pressed, if the crystal-leading section replacing block is used, the pressed wax mould is a wax mould daughter without the crystal-leading section;
step two: vertically cutting off a dead head part of the wax mould matrix along a cutting line for later use;
step three: vertically cutting off the riser part of the wax mould daughter along a cutting line for later use;
step four: splicing the wax mould parent body with the dead head cut off in the step two and a complete wax mould daughter to form a double-layer wax mould;
step five: splicing the wax pattern parent body with the dead head removed in the step two, the wax pattern sub-body with the dead head removed in the step three and a complete wax pattern sub-body into a three-layer wax pattern;
step six: combining the double-layer wax molds spliced in the fourth step by using an auxiliary tool, and ensuring that the axis of a crystal leading section of the wax mold is vertical to a crystallization chassis, wherein the double-layer wax molds are combined in a scheme that each group of the double-layer wax molds is 4 and are annularly and uniformly distributed;
step seven: and (4) combining the three layers of wax moulds spliced in the step five by using an auxiliary tool to ensure that the axis of the crystal-leading section of the wax mould is vertical to the crystallization chassis, wherein the three layers of wax moulds are uniformly distributed in an annular manner for each group of 4 pieces.
When the double-layer wax patterns in the step four are spliced, a splicing platform is needed, and the splicing platform is utilized to enable the back surfaces and the side surfaces of the wax pattern parent body and the wax pattern daughter to be in the same plane, so that the double-layer wax patterns are guaranteed to be integrally flat and free of deformation.
When the three-layer wax patterns in the step five are spliced, a splicing platform is needed, and the splicing platform is utilized to enable the back surfaces and the side surfaces of the wax pattern parent body and the wax pattern daughter to be in the same plane, so that the three-layer wax patterns are integrally flat and free of deformation.
The invention has the beneficial effects that:
compared with the conventional single-layer single-crystal wax pattern module manufacturing method, the multi-layer single-crystal wax pattern module manufacturing method for the ring block structural member can improve the process yield of the wax pattern module by 1-2 times, effectively improve the utilization rate of the master alloy for single crystal casting, and further promote the development and application of the ring block structural member formed by single crystal casting.
Drawings
FIG. 1 is a schematic view of a mold with a pull segment without a pull segment replacement block;
FIG. 2 is a schematic view of a mold without a seeding section using a seeding section replacement block;
FIG. 3 is a schematic structural view of a wax pattern matrix;
FIG. 4 is a schematic view of the structure of the wax pattern sub-body;
FIG. 5 is a schematic cut-away view of a wax pattern precursor;
FIG. 6 is a schematic view of a cut-away of the wax pattern sub-body;
FIG. 7 is a schematic diagram of the double-layer splicing of the wax pattern mother body and the wax pattern daughter;
FIG. 8 is a schematic diagram of three-layer splicing of a wax pattern matrix and a wax pattern daughter;
FIG. 9 is a schematic view of a double-layer wax pattern assembled by an auxiliary tool;
FIG. 10 is a schematic view of a double-layer wax pattern assembly;
FIG. 11 is a schematic view of a three-layer wax pattern assembled by an auxiliary tool;
FIG. 12 is a schematic view of a three-layer wax pattern assembly;
FIG. 13 is a schematic view of the double-layer wax pattern spliced by the splicing platform (back leveling);
FIG. 14 is a schematic view of the double-layer wax pattern spliced by the splicing platform (side leveling);
FIG. 15 is a schematic view of the three wax patterns spliced by the splicing platform (back leveling);
FIG. 16 is a schematic view of the three wax patterns spliced by the splicing platform (side leveling);
in the figure, 1-a seeding section replacement block, 2-a wax mould matrix, 3-a wax mould daughter, 4-a riser part, 5-a cutting line, 6-an auxiliary tool, 7-a crystallization chassis and 8-a splicing platform.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
A method for manufacturing a multilayer single crystal wax mould module of a ring block type structural member comprises the following steps:
the method comprises the following steps: a crystal-leading section replacing block 1 is additionally arranged in a wax mould structure; as shown in fig. 1, if the crystal pulling section is not used to replace the block 1 when pressing the wax pattern, the pressed wax pattern is the wax pattern matrix 2 with the crystal pulling section shown in fig. 3; as shown in fig. 2, if the block 1 is replaced by a seed-guiding segment when pressing the wax pattern, the pressed wax pattern is the wax pattern sub-body 3 without the seed-guiding segment shown in fig. 4;
step two: vertically cutting off a dead head part 4 of the wax mould matrix 2 along a cutting line 5 for later use, as shown in fig. 5;
step three: vertically cutting off a dead head part 4 of the wax pattern daughter 3 along a cutting line 5 for later use, as shown in fig. 6;
step four: splicing the wax pattern matrix 2 with the dead head part 4 cut off in the step two and a complete wax pattern daughter 3 into a double-layer wax pattern, as shown in fig. 7;
step five: splicing the wax pattern matrix 2 with the dead head part 4 removed in the step two, the wax pattern daughter 3 with the dead head part 4 removed in the step three and a complete wax pattern daughter 3 into a three-layer wax pattern, as shown in fig. 8;
step six: the auxiliary tool 6 is utilized to combine the double-layer wax molds spliced in the fourth step, so as to ensure that the axis of the crystal leading section of the wax mold is vertical to the crystallization chassis 7, as shown in fig. 9, the combination scheme of the double-layer wax molds is that each group of the double-layer wax molds is 4, and the double-layer wax molds are annularly and uniformly distributed, as shown in fig. 10;
step seven: and (3) combining the three layers of wax moulds spliced in the step five by using an auxiliary tool 6 to ensure that the axis of the crystal leading section of the wax mould is vertical to the crystallization chassis 7, as shown in fig. 11, wherein the three layers of wax moulds are combined in a mode that each group of wax moulds is provided with 4 sheets and are annularly and uniformly distributed, as shown in fig. 12.
When the double-layer wax patterns are spliced in the fourth step, the splicing platform 8 is needed, and the splicing platform 8 is used for enabling the back surfaces and the side surfaces of the wax pattern parent body 2 and the wax pattern daughter body 3 to be in the same plane, so that the double-layer wax patterns are guaranteed to be flat and free of deformation integrally, as shown in fig. 13 and 14.
When the three-layer wax patterns in the step five are spliced, the splicing platform 8 is needed, and the back surfaces and the side surfaces of the wax pattern parent body 2 and the wax pattern daughter body 3 are positioned in the same plane by using the splicing platform 8, so that the three-layer wax patterns are ensured to be integrally flat and have no deformation, as shown in fig. 15 and 16.
The embodiments are not intended to limit the scope of the present invention, and all equivalent implementations or modifications without departing from the scope of the present invention are intended to be included in the scope of the present invention.
Claims (3)
1. A method for manufacturing a multilayer single crystal wax mould module of a ring block type structural member is characterized by comprising the following steps:
the method comprises the following steps: adding a crystal-leading section replacement block in a wax mould structure; when the wax mould is pressed, if the crystal-leading section replacing block is not used, the pressed wax mould is a wax mould matrix with a crystal-leading section; when the wax mould is pressed, if the crystal-leading section replacing block is used, the pressed wax mould is a wax mould daughter without the crystal-leading section;
step two: vertically cutting off a dead head part of the wax mould matrix along a cutting line for later use;
step three: vertically cutting off the riser part of the wax mould daughter along a cutting line for later use;
step four: splicing the wax mould parent body with the dead head cut off in the step two and a complete wax mould daughter to form a double-layer wax mould;
step five: splicing the wax pattern parent body with the dead head removed in the step two, the wax pattern sub-body with the dead head removed in the step three and a complete wax pattern sub-body into a three-layer wax pattern;
step six: combining the double-layer wax molds spliced in the fourth step by using an auxiliary tool, and ensuring that the axis of a crystal leading section of the wax mold is vertical to a crystallization chassis, wherein the double-layer wax molds are combined in a scheme that each group of the double-layer wax molds is 4 and are annularly and uniformly distributed;
step seven: and (4) combining the three layers of wax moulds spliced in the step five by using an auxiliary tool to ensure that the axis of the crystal-leading section of the wax mould is vertical to the crystallization chassis, wherein the three layers of wax moulds are uniformly distributed in an annular manner for each group of 4 pieces.
2. The method for manufacturing the multi-layer single crystal wax mold module of the ring block type structure member according to claim 1, wherein: when the double-layer wax patterns in the step four are spliced, a splicing platform is needed, and the splicing platform is utilized to enable the back surfaces and the side surfaces of the wax pattern parent body and the wax pattern daughter to be in the same plane, so that the double-layer wax patterns are guaranteed to be integrally flat and free of deformation.
3. The method for manufacturing the multi-layer single crystal wax mold module of the ring block type structure member according to claim 1, wherein: when the three-layer wax patterns in the step five are spliced, a splicing platform is needed, and the splicing platform is utilized to enable the back surfaces and the side surfaces of the wax pattern parent body and the wax pattern daughter to be in the same plane, so that the three-layer wax patterns are integrally flat and free of deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110973867.5A CN113600747A (en) | 2021-08-24 | 2021-08-24 | Method for manufacturing multi-layer single crystal wax mould module of ring block type structural component |
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|---|---|---|---|
| CN202110973867.5A CN113600747A (en) | 2021-08-24 | 2021-08-24 | Method for manufacturing multi-layer single crystal wax mould module of ring block type structural component |
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| CN113600747A true CN113600747A (en) | 2021-11-05 |
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| CN202110973867.5A Pending CN113600747A (en) | 2021-08-24 | 2021-08-24 | Method for manufacturing multi-layer single crystal wax mould module of ring block type structural component |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5899257A (en) * | 1982-09-28 | 1999-05-04 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation | Process for the fabrication of monocrystalline castings |
| US20090208769A1 (en) * | 2008-02-14 | 2009-08-20 | United Technologies Corporation | Method and apparatus for as-cast seal on turbine blades |
| US20140127032A1 (en) * | 2012-11-06 | 2014-05-08 | Howmet Corporation | Casting method, apparatus, and product |
| CN204182858U (en) * | 2014-11-10 | 2015-03-04 | 沈阳黎明航空发动机(集团)有限责任公司 | The conjuncted guide vane casted die mould of a kind of aero-engine |
| CN104399894A (en) * | 2014-12-15 | 2015-03-11 | 东方电气集团东方汽轮机有限公司 | Wax tree structure applied to formation of high-temperature alloy single-crystal guide vane |
| CN204711091U (en) * | 2015-06-02 | 2015-10-21 | 中国南方航空工业(集团)有限公司 | A kind of wax-pattern module built-up jig |
| CN207222857U (en) * | 2017-10-13 | 2018-04-13 | 咸阳勃力模具制造有限公司 | A kind of new blade body and seeding section integrally forming mould |
| CN207642237U (en) * | 2017-11-16 | 2018-07-24 | 株洲中航动力精密铸造有限公司 | Running gate system and single crystal blade molding wax tree structure for single crystal blade |
| US20200101526A1 (en) * | 2016-12-26 | 2020-04-02 | Safran | Cluster model and shell for obtaining an accessory for the independent handling of formed parts and associated method |
| CN111451447A (en) * | 2020-05-15 | 2020-07-28 | 中国航发北京航空材料研究院 | Precision casting method of solid duplex single crystal guide blade |
-
2021
- 2021-08-24 CN CN202110973867.5A patent/CN113600747A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5899257A (en) * | 1982-09-28 | 1999-05-04 | Societe Nationale D'etude Et De Construction De Moteurs D'aviation | Process for the fabrication of monocrystalline castings |
| US20090208769A1 (en) * | 2008-02-14 | 2009-08-20 | United Technologies Corporation | Method and apparatus for as-cast seal on turbine blades |
| US20140127032A1 (en) * | 2012-11-06 | 2014-05-08 | Howmet Corporation | Casting method, apparatus, and product |
| CN204182858U (en) * | 2014-11-10 | 2015-03-04 | 沈阳黎明航空发动机(集团)有限责任公司 | The conjuncted guide vane casted die mould of a kind of aero-engine |
| CN104399894A (en) * | 2014-12-15 | 2015-03-11 | 东方电气集团东方汽轮机有限公司 | Wax tree structure applied to formation of high-temperature alloy single-crystal guide vane |
| CN204711091U (en) * | 2015-06-02 | 2015-10-21 | 中国南方航空工业(集团)有限公司 | A kind of wax-pattern module built-up jig |
| US20200101526A1 (en) * | 2016-12-26 | 2020-04-02 | Safran | Cluster model and shell for obtaining an accessory for the independent handling of formed parts and associated method |
| CN207222857U (en) * | 2017-10-13 | 2018-04-13 | 咸阳勃力模具制造有限公司 | A kind of new blade body and seeding section integrally forming mould |
| CN207642237U (en) * | 2017-11-16 | 2018-07-24 | 株洲中航动力精密铸造有限公司 | Running gate system and single crystal blade molding wax tree structure for single crystal blade |
| CN111451447A (en) * | 2020-05-15 | 2020-07-28 | 中国航发北京航空材料研究院 | Precision casting method of solid duplex single crystal guide blade |
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Application publication date: 20211105 |
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