CN114535504A - Titanium alloy casting, shell and shell preparation method - Google Patents
Titanium alloy casting, shell and shell preparation method Download PDFInfo
- Publication number
- CN114535504A CN114535504A CN202210157629.1A CN202210157629A CN114535504A CN 114535504 A CN114535504 A CN 114535504A CN 202210157629 A CN202210157629 A CN 202210157629A CN 114535504 A CN114535504 A CN 114535504A
- Authority
- CN
- China
- Prior art keywords
- shell
- wax
- titanium alloy
- central core
- 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.)
- Granted
Links
- 238000005266 casting Methods 0.000 title claims abstract description 101
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 33
- 238000004519 manufacturing process Methods 0.000 claims abstract description 22
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 16
- 239000000463 material Substances 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000002285 radioactive effect Effects 0.000 claims description 3
- 230000007547 defect Effects 0.000 abstract description 9
- 238000005495 investment casting Methods 0.000 abstract description 5
- 230000003746 surface roughness Effects 0.000 abstract description 5
- 238000000576 coating method Methods 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000006748 scratching Methods 0.000 description 2
- 230000002393 scratching effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007591 painting process Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000004901 spalling Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/04—Use of lost patterns
- B22C9/043—Removing the consumable pattern
-
- 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
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
- B22C9/103—Multipart cores
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention belongs to the technical field of investment casting of titanium alloy castings, and particularly relates to a titanium alloy casting, a shell and a shell preparation method, wherein the shell preparation method comprises the following steps: s1: manufacturing a supporting core bar and a central core bar; s2: manufacturing a casting system wax mold with the built-in central core; s3: manufacturing a structural member wax mold and a riser wax mold; s4: connecting a casting system wax mold and a riser wax mold to two sides of the structural part wax mold; connecting the support core bar to one side of the riser wax mold, which is far away from the structural part wax mold, and connecting the support core bar and the central core bar to obtain an integral wax mold; s5: and preparing a shell of the integral wax mould, and performing a wax mould dewaxing procedure after the preparation is finished to obtain the shell of the titanium alloy casting. The shell preparation method not only ensures the strength problem in the shell preparation process, but also avoids the influence of the core bone on the surface quality of the inner cavity of the shell, reduces the defects of the shell and the casting, and enables the casting to meet the design requirements of high dimensional accuracy and high surface roughness.
Description
Technical Field
The invention belongs to the technical field of investment casting of titanium alloy castings, and particularly relates to a titanium alloy casting, a shell and a shell preparation method.
Background
Investment casting of titanium alloy is a major method for industrially manufacturing products with high dimensional accuracy, low surface roughness and complex structures, and has been widely used for manufacturing parts in the fields of aerospace, petroleum, chemical industry and the like. The pouring system designed in the casting process forms a molten metal channel in the casting pouring process and simultaneously supports the operation of the whole die set in the coating process. In recent years, with the improvement of titanium alloy precision casting technology, the technical level of precision castings and the application quantity of castings, large castings and complex multi-structure integrated castings continuously appear in the structural design of the castings, so that higher requirements on the shape and contour accuracy of wax molds, shells or castings in the casting process are provided; for example, in the case type parts of titanium alloy thin-wall used in the aerospace industry, a complex casting system is generally adopted in the shell preparation process, and the metal core bar and the tie bar are used for assisting in improving the integral rigidity of the shell. Specifically, a metal core bar with a longitudinal support and a transverse support is arranged according to a gating system, then the metal core bar is arranged in a pouring tray, the pouring tray with the built-in core bar is formed after wax pressing, and the weight of the module is supported by rigid connection of the longitudinal support and the transverse support of metal. And (5) subsequently, preparing the shell through die assembly and coating, and stretching ribs on the surface of the sprue in a coordinated manner to ensure the integral strength.
However, because the core bar is embedded in the runner plate, and the subsequent shell is taken out of the shell after the preparation is completed, some risks exist, which are specifically as follows:
1. the core rod is required to be clean in surface, and impurities cannot be brought into the core rod to influence the shell quality;
2. the outline of the core bar is limited by the design size of a pouring channel, the structural strength of the core bar is limited, and the core bar is easy to deform and scrap particularly in the recycling process;
3. the core bars are assembled in a matching way, and certain precision is required to ensure the size of the runner plate;
4. after the shell is prepared, the inner part of the shell is easily scratched and collided in the process of drawing the core bar out of the shell;
5. the increase lacing wire can increase the module complexity, drenches sand process technology and easily produces sheltering from, leads to the shell to appear quality problems.
That is, although the strength problem in the shell preparation process is guaranteed by the above process, the complexity of the shell structure and the control difficulty of the quality are increased, so that the coating in the shell preparation process is uneven, the shell cracks, damages and other defects occur in the subsequent drying and roasting processes, the internal metallurgical defects of the casting formed in the casting pouring process often need to be repaired or repaired after the casting is formed, the surface quality of the casting is greatly affected, and the design requirements of the casting with high dimensional accuracy and high surface roughness cannot be met, so that the casting is scrapped.
Disclosure of Invention
The invention aims to provide a titanium alloy casting, a shell and a shell preparation method, which at least solve one problem in the titanium alloy casting shell preparation process.
The invention provides a method for preparing a shell of a titanium alloy casting, which comprises the following steps:
s1: manufacturing a supporting core bar and a central core bar aiming at a titanium alloy casting structure and a pouring system scheme;
s2: manufacturing a casting system wax mold with the built-in central core bone aiming at the titanium alloy casting structure;
s3: manufacturing a structural member wax mold and a riser wax mold aiming at a titanium alloy casting structure;
s4: connecting the casting system wax pattern and the riser wax pattern to two sides of the structural part wax pattern; connecting the support core bar to one side of the riser wax mold, which is far away from the structural part wax mold, and connecting the support core bar and the central core bar to obtain an integral wax mold;
s5: and preparing a shell of the integral wax mould, performing a wax mould dewaxing procedure after the preparation is finished, and removing the supporting core bone, the central core bone and the wax material to obtain the shell of the titanium alloy casting.
In the method for producing a mold shell of a titanium alloy casting, it is preferable that the central core rod has a cylindrical shape; the central core bone penetrates through the center or the periphery of the structural part wax mould.
In the above method for producing a mold shell of a titanium alloy casting, it is preferable that the support core includes a support portion and a connection portion; the connecting part is suitable for being connected with a riser wax mold; the supporting parts are multiple, one ends of the supporting parts are connected, and the other ends of the supporting parts are arranged in a radioactive mode; the connecting part is connected to each supporting part.
In the method for producing a mold shell of a titanium alloy casting, it is preferable that the central core is connected to the support portion, and the central core, the support portion, and the connecting portion are integrally formed.
In the method for producing a mold shell of a titanium alloy casting, it is preferable that an end portion of the central core is fitted with a mounting ring, and end portions of the plurality of supporting portions are inserted into the mounting ring.
In the method for producing a shell of a titanium alloy casting, it is preferable that the cross section of the support portion is circular, U-shaped, or square.
In the method for preparing a shell of a titanium alloy casting, it is further preferable that the wax mold of the gating system includes a main runner wax mold and a branch runner wax mold, and the main runner wax mold is a hollow column molded on the outer surface of the central core; the number of the branch pouring channel wax moulds is multiple, one end of each branch pouring channel wax mould is connected with the main pouring channel wax mould, and the other end of each branch pouring channel wax mould is connected with the structural part wax mould.
In the method for producing a shell of a titanium alloy casting as described above, preferably, the wax pattern dewaxing step performed in step S5 includes:
s51: heating both ends of the central core so that the wax material around the central core is melted first and the central core is removed first after the central core is loosened;
s52: and continuously heating to remove the residual wax material.
The invention also provides a shell of the titanium alloy casting, which is processed by adopting the preparation method of the shell of the titanium alloy casting.
The invention also provides a titanium alloy casting which is obtained by processing the shell of the titanium alloy casting.
The invention provides a method for preparing a shell of a titanium alloy casting, which mainly comprises the steps of preparing a support core bar and a central core bar, preparing a casting system wax mould based on the central core bar, preparing a structural member wax mould and a riser wax mould, assembling the mould, preparing the shell, post-treating and the like, wherein the core bar is divided into the support core bar and the central core bar which are connected, the support core bar and the riser wax mould are combined to form a support mould group of the structural member wax mould during the assembling of the mould, the support mould group is matched with the casting system wax mould with the built-in central core bar to form a frame, and finally the shell is prepared on the basis of the frame. Compared with the existing preparation method of the shell with the built-in core bone, the method has the following beneficial effects:
in the shell preparation method, the supporting core is externally arranged outside the shell, so that the limitation of the size of a pouring channel is avoided, the structural strength is ensured, and the supporting strength of the whole structure is further ensured;
the quality of the inner cavity of the shell is not affected by the external arrangement of the supporting core rod, so that the requirements on surface cleanliness and matching precision are reduced, the requirements and difficulty on shell preparation are reduced, and the success rate of shell preparation is improved;
the supporting core rod is arranged outside the shell and does not need to be drawn out of the shell, so that the shell quality problem caused by scratching and colliding inside the shell can be reduced, the metallurgical defect caused by the shell internal quality in casting molding of the casting is reduced, the shell preparation quality is controlled, and the technical bottleneck of repair welding of the subsequent casting can be reduced;
support the core bone through the setting and separately use with the gating system wax matrix, can play the technology lacing wire effect with the gating system wax matrix, can effectively promote module intensity, reduce the use of the metal lacing wire of shell, simplify the shell structure, reduce sheltering from of coating process drenches sand, improve the coating of shell preparation process and hold the quality, save people and operate reduce cost.
The shell preparation method not only ensures the strength problem in the shell preparation process, but also avoids the influence of the core bone on the surface quality of the inner cavity of the shell, simultaneously reduces the complexity of the structural frame of the shell and the control difficulty of the quality, reduces the defects of the shell, improves the success rate of shell preparation, and simultaneously reduces the defects of the casting, so that the casting meets the design requirements of high dimensional accuracy and high surface roughness.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic view of a mold structure of a shell in a shell preparation method of a titanium alloy casting according to the present invention;
FIG. 2 is a schematic view of the connection structure of the wax mold of the gating system with the supporting core bar and the central core bar;
FIG. 3 is a front view of FIG. 2;
FIG. 4 is a cross-sectional view of FIG. 2;
FIG. 5 is a front view of FIG. 1;
fig. 6 is a cross-sectional view of fig. 1.
Description of reference numerals:
1-central core bar, 2-supporting part, 3-connecting part, 4-main pouring channel wax mould, 5-branch pouring channel wax mould, 6-riser wax mould and 7-structural part wax mould.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the terms in the present invention can be understood in a specific case to those skilled in the art.
As shown in fig. 1 to 6, a method for preparing a shell of a titanium alloy casting according to an embodiment of the present invention mainly includes the following steps:
s1: manufacturing a supporting core bar and a central core bar 1 aiming at a titanium alloy casting structure and a pouring system scheme;
s2: manufacturing a casting system wax mold with a built-in central core 1 aiming at a titanium alloy casting structure;
s3: manufacturing a structural member wax mold 7 and a riser wax mold 6 aiming at a titanium alloy casting structure;
s4: connecting a casting system wax mold and a riser wax mold 6 to two sides of a structural part wax mold 7; connecting the support core bar to one side of the riser wax mold 6, which is far away from the structural part wax mold 7, and connecting the support core bar and the central core bar 1 to obtain an integral wax mold;
s5: and preparing a shell of the integral wax mould, performing a wax mould dewaxing procedure after the preparation is finished, and removing the supporting core bone, the central core bone 1 and the wax material to obtain the shell of the titanium alloy casting.
The shell preparation method of the embodiment is mainly suitable for circular titanium alloy castings with thick and large mounting edge structures, and the thick and large mounting edge structures are preferably circumferential structures or central symmetrical structures. The structure can exist correspondingly on the upper end surface and the lower end surface of the titanium alloy casting, so that support is provided for subsequent die assembly.
At S1, the central core 1 is preferably rod-shaped and has a diameter determined according to the diameter of the main runner in the gating system scheme, so that the central core 1 can ensure higher strength while occupying a limited volume. The central core 1 penetrates through the middle or the periphery of the structural part wax mold 7, specifically, according to the shape of the titanium alloy casting, when the middle of the titanium alloy casting is provided with a cavity suitable for accommodating the central core 1 to penetrate through, the central core 1 penetrates through the middle cavity of the structural part wax mold 7, and when the middle of the titanium alloy casting does not have a penetrating space, the central core is arranged on the periphery of the structural part wax mold 7.
As shown in fig. 2 to 4, the support core includes a support portion 2 and a connection portion 3; the connecting part 3 is suitable for being connected with a riser wax mold 6; the number of the supporting parts 2 is multiple, one end of each supporting part 2 is connected, and the other end of each supporting part 2 is arranged in a radioactive mode; a connecting portion 3 is connected to each support portion 2. The support parts 2 are all positioned on the same plane, one ends of the support parts are connected, the other ends of the support parts are radially distributed according to the shape of the structural part wax mold 7 and the position of the central core 1, and the support parts are suitable for providing support for the structural part wax mold 7; preferably, the cross-section of the support part 2 is circular, U-shaped or square in order to increase the strength of the support part 2. The connecting parts 3 are vertically connected to the supporting part 2, and a plurality of connecting parts 3 can be arranged on the same supporting part 2 according to the design position of a riser of the structural part wax mold 7.
The central core 1 and the supporting core are in an integrated structure, wherein the central core 1 is connected with the connecting ends of the plurality of supporting parts 2; or the end part of the central core 1 is sleeved with a mounting ring, and the end parts of the plurality of supporting parts 2 are inserted in the mounting ring. Preferably, the central core rod 1 and the supporting core rod are of an integrally formed structure, so that on one hand, the overall strength is improved, and on the other hand, the assembling steps are reduced, and the structural precision is improved.
As shown in fig. 2-4, in S2, the gating system wax pattern includes a main runner wax pattern 4 and a branch runner wax pattern 5, where the main runner wax pattern 4 is a hollow column formed on the outer surface of the central core rod 1; the number of the branch pouring channel wax moulds 5 is multiple, one end of each branch pouring channel wax mould 5 is connected with the main pouring channel wax mould 4, and the other end of each branch pouring channel wax mould is connected with the structural part wax mould 7.
In the pouring system, the branch pouring channel can be a straight pouring channel or a bent pouring channel, and preferably, the branch pouring channel is a bent pouring channel, so that the branch pouring channel wax mold 5 plays a role of a process lacing wire in a subsequent frame. The main runner wax pattern 4 is directly molded on the outer side of the central core 1, and preferably, the central core 1 may be provided with a screw thread in order to improve the adhesion strength between the main runner wax pattern 4 and the central core 1. One end of the branch pouring channel wax mold 5 is connected with the main pouring channel wax mold 4, and the other end of the branch pouring channel wax mold is radiated outwards from the main pouring channel wax mold 4 in a radial shape and is suitable for being connected with the structural part wax mold 7 at the mold assembling stage. Depending on the gating system design, the same sub-runner wax pattern 5 may be provided with multiple connection points to simultaneously connect with multiple different locations of the structural member wax pattern 7.
Specifically, when the wax mold of the pouring system is manufactured, the central core rod 1 can be placed in a pouring channel mold, and the pouring channel wax mold is pressed in a wax pressing machine; or manually filling wax to form the pouring channel wax mold.
In S3, the structural member wax pattern 7 and the feeder head wax pattern 6 are manufactured according to the titanium alloy casting structure, wherein the size of the feeder head wax pattern 6 needs to be increased to improve the subsequent connection and support strength.
As shown in fig. 1, 5 and 6, in S4, the casting system wax mold and the riser wax mold 6 are fixedly connected to two sides of the structural member wax mold 7 by using wax, then the supporting core bar and the central core bar 1 are fixedly connected, and then the supporting core bar and the riser wax mold 6 are fixedly connected by using wax, so as to obtain the integral wax mold.
In S5, the entire wax pattern in S4 is subjected to a painting process to complete the shell preparation process. And after the preparation is finished, performing a wax pattern dewaxing process to remove the supporting core bar, the central core bar 1 and the wax material to obtain the shell of the titanium alloy casting.
Specifically, the wax pattern dewaxing step performed in step S5 includes:
s51: heating the two ends of the central core rod 1 to enable the wax material around the central core rod 1 to be firstly melted and firstly to be separated from the central core rod 1 after the central core rod 1 is loosened;
s52: and continuously heating to remove the residual wax material.
Wherein, the two ends of the central core rod 1 are heated by adopting a method of heating the two ends, so that the wax material around the central core rod 1 is firstly melted, and the central core rod 1 is firstly separated from the wax mould after the central core rod 1 is heated until the structure of the central core rod is loosened, so as to form a cavity in the center of the wax mould; and continuously heating, and carrying out a subsequent dewaxing step, wherein in the dewaxing process, the force generated in the melting and expansion process of the wax material is released from the cavity and does not directly act on the surface of the shell, so that the shell spalling caused by the expansion of the wax material in the dewaxing process of the wax mould is avoided.
The shell preparation method in the embodiment comprises the steps of preparing a support core and a central core 1, preparing a casting system wax mold based on the central core 1, preparing a structural member wax mold 7 and a riser wax mold 6, assembling, preparing a shell, performing post-treatment and the like, dividing the core into the support core and the central core 1 which are connected, combining the support core and the riser wax mold 6 to form a support module of the structural member wax mold 7 during assembling, matching the support module with the casting system wax mold with the built-in central core 1 to form a frame, and finally preparing the shell based on the frame. Compared with the existing preparation method of the shell with the built-in core bone, the method has the following beneficial effects:
the supporting core is externally arranged outside the shell, so that the limitation of the size of a pouring channel can be avoided, the structural strength is ensured, and the supporting strength of the whole structure is further ensured;
the quality of the inner cavity of the shell is not affected by the external arrangement of the supporting core rod, so that the requirements on surface cleanliness and matching precision are reduced, the requirements and difficulty on shell preparation are reduced, and the success rate of shell preparation is improved;
the supporting core rod is arranged outside the shell and does not need to be drawn out of the shell, so that the shell quality problem caused by scratching and colliding inside the shell can be reduced, the metallurgical defect caused by the shell internal quality in casting molding of the casting is reduced, the shell preparation quality is controlled, and the technical bottleneck of repair welding of the subsequent casting can be reduced;
the supporting core rod and the casting system wax mold are separately used through the arrangement, the casting system wax mold can play a process lacing wire role, the mold structure is simplified, the shielding of sand spraying in the coating process is reduced, the shell quality is improved, meanwhile, the manual lacing wire arrangement is reduced, and the operation cost is reduced.
The invention also provides a shell of the titanium alloy casting, which is obtained by processing the shell of the titanium alloy casting in the embodiment. The shell preparation method not only ensures the strength problem of the shell in the shell preparation process, but also avoids the influence of the core bone on the surface quality of the inner cavity of the shell, simultaneously reduces the complexity of the shell structure frame and the control difficulty of the quality, reduces the defects of the shell, and improves the success rate of the shell preparation and the shell quality.
The invention also provides a titanium alloy casting which is obtained by processing the shell of the titanium alloy casting, so that the titanium alloy casting has all the beneficial effects brought by the technical scheme in the embodiment, the titanium alloy defects of the casting are further reduced, and the casting meets the design requirements of high dimensional accuracy and high surface roughness.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A method for preparing a shell of a titanium alloy casting is characterized by comprising the following steps:
s1: manufacturing a supporting core bar and a central core bar aiming at a titanium alloy casting structure and a pouring system scheme;
s2: manufacturing a casting system wax mold with the built-in central core bone aiming at the titanium alloy casting structure;
s3: manufacturing a structural member wax mold and a riser wax mold aiming at a titanium alloy casting structure;
s4: connecting the casting system wax mold and the riser wax mold to two sides of the structural part wax mold, connecting the support core bar to one side of the riser wax mold far away from the structural part wax mold, and connecting the support core bar and the central core bar to obtain an integral wax mold;
s5: and preparing a shell of the integral wax mould, performing a wax mould dewaxing procedure after the preparation is finished, and removing the supporting core bone, the central core bone and the wax material to obtain the shell of the titanium alloy casting.
2. A method of producing a shell of a titanium alloy casting according to claim 1,
the central core bone is rod-shaped and penetrates through the middle or the periphery of the structural part wax mould.
3. A method of producing a shell of a titanium alloy casting according to claim 2,
the supporting core comprises a supporting part and a connecting part; the connecting part is suitable for being connected with the riser wax mold; the supporting parts are multiple, one ends of the supporting parts are connected, and the other ends of the supporting parts are arranged in a radioactive mode; the connecting part is connected to each supporting part.
4. A method of producing a shell of a titanium alloy casting according to claim 3,
the central core bar is connected with the supporting part, and the central core bar, the supporting part and the connecting part are of an integrally formed structure.
5. A method of producing a shell of a titanium alloy casting according to claim 3,
the end part of the central core rod is sleeved with a mounting ring, and the end parts of the supporting parts are inserted in the mounting ring.
6. A method for producing a shell of a titanium alloy casting according to claim 3, wherein the cross section of said supporting portion is circular, U-shaped or square.
7. A method of producing a shell of a titanium alloy casting according to claim 2,
the casting system wax mold comprises a main pouring channel wax mold and branch pouring channel wax molds, and the main pouring channel wax mold is a hollow column formed on the outer surface of the central core rod; the number of the branch pouring channel wax moulds is multiple, one end of each branch pouring channel wax mould is connected with the main pouring channel wax mould, and the other end of each branch pouring channel wax mould is connected with the structural part wax mould.
8. A method of producing a shell of a titanium alloy casting according to claim 1,
the wax pattern dewaxing process performed in step S5 includes:
s51: heating both ends of the central core so that the wax material around the central core is melted first and the central core is removed first after the central core is loosened;
s52: and continuously heating to remove the residual wax material.
9. A shell of a titanium alloy casting, characterized by being obtained by processing according to the method for producing a shell of a titanium alloy casting described in any one of claims 1 to 8.
10. A titanium alloy cast product obtained by shell processing of the titanium alloy cast product according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157629.1A CN114535504B (en) | 2022-02-21 | 2022-02-21 | Titanium alloy casting, shell and shell preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210157629.1A CN114535504B (en) | 2022-02-21 | 2022-02-21 | Titanium alloy casting, shell and shell preparation method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114535504A true CN114535504A (en) | 2022-05-27 |
| CN114535504B CN114535504B (en) | 2023-10-27 |
Family
ID=81675838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210157629.1A Active CN114535504B (en) | 2022-02-21 | 2022-02-21 | Titanium alloy casting, shell and shell preparation method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114535504B (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6467531B1 (en) * | 1999-10-18 | 2002-10-22 | Clyde D. Doney | Method and apparatus for producing investment castings in a vacuum |
| CN202894216U (en) * | 2012-09-25 | 2013-04-24 | 贵州安吉航空精密铸造有限责任公司 | Casting tooling for large-size and complicated framework type titanium alloy thin wall castings |
| CN103302248A (en) * | 2013-05-20 | 2013-09-18 | 江苏久保联实业有限公司 | Investment casting mould of high-temperature alloy bending pipe |
| WO2014063336A1 (en) * | 2012-10-26 | 2014-05-01 | 西安西工大超晶科技发展有限责任公司 | Aluminum alloy investment casting small-sized inner cavity molding method |
| CN104353784A (en) * | 2014-10-31 | 2015-02-18 | 沈阳黎明航空发动机(集团)有限责任公司 | Precision casting method for complex thin-wall structural member framework of high-temperature alloy cavity |
| JP2016155159A (en) * | 2015-02-25 | 2016-09-01 | 三菱重工業株式会社 | Precision casting method and dewaxing auxiliary member |
| CN106001513A (en) * | 2016-04-19 | 2016-10-12 | 中国航空工业集团公司北京航空材料研究院 | Preparation method of precision-investment casting single-crystal high-temperature alloy thin-wall sample |
| WO2018039854A1 (en) * | 2016-08-29 | 2018-03-08 | 丁洋 | Casting mould for hydraulic valve body used in large loader and manufacturing method therefor |
| US10010930B1 (en) * | 2016-12-15 | 2018-07-03 | Signicast Llc | Wax mold for investment casting and method of assembling a wax mold |
| CN109014038A (en) * | 2018-10-16 | 2018-12-18 | 北京星航机电装备有限公司 | A method of reducing shell spalling in precision-investment casting dewaxing process |
| JP2020116605A (en) * | 2019-01-23 | 2020-08-06 | 株式会社栗本鐵工所 | Sand-mold caster for cast tube and method of positioning core therefor to metal frame |
| CN211191895U (en) * | 2019-12-19 | 2020-08-07 | 河北钢研德凯科技有限公司 | Core bar clamp and investment casting manufacturing device |
| CN112122550A (en) * | 2020-09-23 | 2020-12-25 | 贵州安吉航空精密铸造有限责任公司 | Investment casting process for thin-wall annular casing casting |
| KR102305001B1 (en) * | 2020-05-28 | 2021-09-23 | 김승중 | Method for manufaturing manhole cover |
| CN215090510U (en) * | 2021-01-12 | 2021-12-10 | 北京航空材料研究院有限公司 | Large-scale titanium alloy component shell preparation frock |
| CN215587779U (en) * | 2021-08-10 | 2022-01-21 | 贵州安吉航空精密铸造有限责任公司 | Investment casting wax pattern core |
-
2022
- 2022-02-21 CN CN202210157629.1A patent/CN114535504B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6467531B1 (en) * | 1999-10-18 | 2002-10-22 | Clyde D. Doney | Method and apparatus for producing investment castings in a vacuum |
| CN202894216U (en) * | 2012-09-25 | 2013-04-24 | 贵州安吉航空精密铸造有限责任公司 | Casting tooling for large-size and complicated framework type titanium alloy thin wall castings |
| WO2014063336A1 (en) * | 2012-10-26 | 2014-05-01 | 西安西工大超晶科技发展有限责任公司 | Aluminum alloy investment casting small-sized inner cavity molding method |
| CN103302248A (en) * | 2013-05-20 | 2013-09-18 | 江苏久保联实业有限公司 | Investment casting mould of high-temperature alloy bending pipe |
| CN104353784A (en) * | 2014-10-31 | 2015-02-18 | 沈阳黎明航空发动机(集团)有限责任公司 | Precision casting method for complex thin-wall structural member framework of high-temperature alloy cavity |
| JP2016155159A (en) * | 2015-02-25 | 2016-09-01 | 三菱重工業株式会社 | Precision casting method and dewaxing auxiliary member |
| CN106001513A (en) * | 2016-04-19 | 2016-10-12 | 中国航空工业集团公司北京航空材料研究院 | Preparation method of precision-investment casting single-crystal high-temperature alloy thin-wall sample |
| WO2018039854A1 (en) * | 2016-08-29 | 2018-03-08 | 丁洋 | Casting mould for hydraulic valve body used in large loader and manufacturing method therefor |
| US10010930B1 (en) * | 2016-12-15 | 2018-07-03 | Signicast Llc | Wax mold for investment casting and method of assembling a wax mold |
| CN109014038A (en) * | 2018-10-16 | 2018-12-18 | 北京星航机电装备有限公司 | A method of reducing shell spalling in precision-investment casting dewaxing process |
| JP2020116605A (en) * | 2019-01-23 | 2020-08-06 | 株式会社栗本鐵工所 | Sand-mold caster for cast tube and method of positioning core therefor to metal frame |
| CN211191895U (en) * | 2019-12-19 | 2020-08-07 | 河北钢研德凯科技有限公司 | Core bar clamp and investment casting manufacturing device |
| KR102305001B1 (en) * | 2020-05-28 | 2021-09-23 | 김승중 | Method for manufaturing manhole cover |
| CN112122550A (en) * | 2020-09-23 | 2020-12-25 | 贵州安吉航空精密铸造有限责任公司 | Investment casting process for thin-wall annular casing casting |
| CN215090510U (en) * | 2021-01-12 | 2021-12-10 | 北京航空材料研究院有限公司 | Large-scale titanium alloy component shell preparation frock |
| CN215587779U (en) * | 2021-08-10 | 2022-01-21 | 贵州安吉航空精密铸造有限责任公司 | Investment casting wax pattern core |
Non-Patent Citations (1)
| Title |
|---|
| 张春波;王峰;张冰;张俊;: "泵体的熔模铸造工艺", 特种铸造及有色合金, no. 04, pages 351 - 352 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114535504B (en) | 2023-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107931525B (en) | Method for controlling solidification of investment casting | |
| CN102921902B (en) | Composite shaping technique method of iron pattern coated sand and iron type core assembly | |
| CN111097875B (en) | Casting process of inner chill for accelerated solidification and cooling of thick and large investment castings | |
| CN114799127B (en) | Low-pressure metal mold casting method for integral hollow auxiliary frame | |
| CN109396345A (en) | A method of for investment casting formwork part Quench | |
| CN105382241A (en) | Casting process of oil separator box body | |
| CN111451472A (en) | Manufacturing method of magnesium alloy vehicle horn housing | |
| CN114535504B (en) | Titanium alloy casting, shell and shell preparation method | |
| CN107008866B (en) | A kind of manufacturing process of cylindrical work pieces | |
| CN107282909A (en) | A kind of running gate system and centre spinning method for tube shape component | |
| CN112207230B (en) | Lost wax and die-casting process for metal jewelry | |
| CN210996310U (en) | Fired mold structure of valve body | |
| JP2968671B2 (en) | Casting method and equipment | |
| CN214920259U (en) | Aluminum alloy tilting casting die | |
| CN211762921U (en) | Automobile gear die convenient to replace | |
| CN221018555U (en) | Fine casting mould structure of large-diameter narrow-runner impeller | |
| CN213530676U (en) | Three-opening die for aluminum-clad iron casting | |
| CN212761830U (en) | Foundry goods and die head welding stent | |
| CN114260422B (en) | Preparation process of sand core shell for casting of middle-large-sized precision castings | |
| CN208600684U (en) | A kind of mold producing automobile tyrerim | |
| CN219357840U (en) | Three-dimensional printing shell pressing sand mould | |
| CN215966157U (en) | Wet sand casting mould | |
| CN215544816U (en) | Special mould for producing precision castings | |
| CN113441688B (en) | Chaplet and using method | |
| CN210498185U (en) | Forging die |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |