CN207659552U - A kind of improved high-efficiency c-type crystal selector - Google Patents
A kind of improved high-efficiency c-type crystal selector Download PDFInfo
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- CN207659552U CN207659552U CN201721421497.XU CN201721421497U CN207659552U CN 207659552 U CN207659552 U CN 207659552U CN 201721421497 U CN201721421497 U CN 201721421497U CN 207659552 U CN207659552 U CN 207659552U
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Abstract
The utility model belongs to hot investment casting applied technical field, specifically disclose a kind of improved high-efficiency c-type crystal selector, by supporting block, support column, locating ring, graining end, confinement section, the brilliant section of choosing and set of transitions at, wherein, one end of several changeover portions is connect with locating ring respectively, supporting block is set as conical structure, locating ring be provided in round structure and between be more than supporting block, the length of confinement section is 46 times of changeover portion.The beneficial effects of the utility model are：The brilliant section of choosing uses the diameter of suitable dimension, not only ensures to select brilliant efficiency, but also ensure the intensity of the brilliant section of choosing, ensure the smooth molding of crystal grain, selects brilliant section to use rational raising angle, it is ensured that while crystal grain is smoothly grown up, it is also ensured that the brilliant section height of choosing will not be excessively high, to improve work efficiency；10 graining end, confinement section, the brilliant section of choosing and the changeover portions being used in combination and size difference, improve the producing efficiency of crystal selector and reduce the probability that stray crystal occurs, significantly improve the brilliant efficiency of choosing.
Description
Technical field
The utility model belongs to hot investment casting applied technical field, and in particular to a kind of improved high-efficiency c-type crystal selector.
Background technology
Nickel base superalloy is widely used in Aeronautics and Astronautics, navigation and energy because having good mechanical performance
The fields such as work, nickel-base high-temperature single crystal alloy are even more the head for becoming advanced aero engine design with its excellent mechanical behavior under high temperature
Material selection.But in industrial production, single crystal super alloy turbo blade is because being orientated depositing for the coagulation defects such as deviation, stray crystal, shrinkage porosite
And cause its rejection rate higher, thus these coagulation defects become the main problem of single crystal super alloy research, and select brilliant mistake
Cheng Ze is to cause crystal orientation to deviate and one of the main reason for the defects of stray crystal is formed, but prepare nickel to crystal separation method at present
The brilliant mechanism of choosing during based single-crystal high-temperature alloy is also not very clear, also relies on experience to the design of crystal selector, not yet establishes
The correlation that the choosing brilliant stage is formed with defect.
It is previous studies have shown that the geometric parameter of crystal selector（Seeding section and the brilliant section parameter of choosing）Directly determine that final choosing is brilliant
As a result, it is believed that increase the ratio between the height of seeding section and seeding section diameter, the qualification rate of monocrystalline can be improved, used simultaneously
Two dimensional model, analog study influence of the crystal selector inclination angle to monocrystalline qualification rate, the results showed that：When crystal selector inclination angle is 30
When -40 degree left and right of degree, the qualification rate of monocrystalline is highest, in crystal selector diameter smaller range, with the increase of diameter, monocrystalline
Qualification rate also increases, while the height of crystal selector and seeding section diameter have not significant impact the qualification rate of final monocrystalline, pass through
Numerical simulation and experimental study analyze the process of the crystal grain competitive growth and crystal grain selection of different crystal selectors, result of study table
It is bright：The geometric properties of crystal selector have prodigious influence to the brilliant effect of choosing, and with the increase for playing lift angle, single crystal organization is in the brilliant section of choosing
Interior acquisition position gradually increases, and result of study shows that the increase with the brilliant diameter of choosing, single crystal organization obtain in the brilliant section of choosing simultaneously
The position obtained continuously decreases.Therefore, to consider in the design of two-dimentional crystal selector seeding section and the brilliant section of choosing geometry and
Influence of the parameter to monocrystalline quality is taken with improving the qualification rate of single crystal blade and optimizing in conjunction with seed-grain method and control final monocrystalline
To.
The height that crystal selector should be reduced as possible during single crystal preparation lacks to ensure the length of blade and reduce solidification
The tendency formed is fallen into, but when crystal selector seeding section height is relatively low, crystal grain orientations optimized effect is not obvious in seeding section, meeting
Cause final single-crystal orientation poor；When crystal selector selects the height of brilliant section too low（The brilliant section parameter of choosing is improper）It can influence to select brilliant mistake again
Journey is smoothed out, and causes the formation of stray crystal in channel, to influence the quality of final monocrystalline, results even in the brilliant process of choosing
Failure, cannot obtain single crystal organization.Therefore, during crystal separation method prepares nickel-base high-temperature single crystal alloy turbo blade, it is ensured that
The sufficient length of blade and high choosing crystalline substance success rate, just must reasonably design the size of crystal selector.However, although selecting crystal technique
It is had obtained relatively broad application in field of industrial production, but is far from reaching the weight to monocrystalline itself to the research of the brilliant process of choosing
Visual range degree is unfavorable for the development of Crystal Growth Technique.
Foreign countries are more mature for the design of crystal selector structure and parameter, can also ensure higher qualification in industrial production
Rate, but crystal selector structure snd size belong to the know-how of single crystal preparation, it is external highly confidential, it is necessary to autonomous tackling key problem.At present
Though domestic relevant unit can prepare single crystal super alloy turbo blade using crystal separation method, for crystal selector design also
Only it is that by virtue of experience, for selecting the research of brilliant mechanism also insufficient, while blade rejection rate caused by due to choosing brilliant failure is also non-
Chang Gao.Therefore the big obstacle for restricting China's single crystal blade and preparing is had become for the rational design of crystal selector, it is necessary to right
The brilliant process of choosing carries out in-depth study, especially between crystal selector geometric parameter and the choosing crystalline substance efficiency and single-crystal orientation of crystal selector
Relationship make further further investigation, have very big practical significance for the rational design of crystal selector.
Therefore, based on the above issues, the utility model provides a kind of improved high-efficiency c-type crystal selector.
Utility model content
Purpose of utility model：The purpose of this utility model is to provide a kind of improved high-efficiency c-type crystal selector, can be into
The brilliant mechanism of one step research choosing finds a break-through point, in conjunction with existing 3D printing technique, is closed to improve China's nickel-based monocrystal high temperature
Golden turbo blade yield carries out the reference value that crystal separation method prepares the research offer preciousness of nickel-base high-temperature single crystal alloy.
Technical solution：The utility model provides a kind of improved high-efficiency c-type crystal selector, is being supported by supporting block, and setting
Support column on block, and be arranged and supporting the locating ring of column end, and several graining ends being uniformly arranged in supporting block, and
Several confinement sections being used in combination with several graining ends, and several choosings being used in combination with several confinement sections are brilliant
Section, and be used in combination with several brilliant sections of choosing with several set of transitions at, wherein distinguish one end of several changeover portions
It is connect with locating ring；The supporting block, locating ring, support column, several graining ends, several confinement sections, the brilliant section of several choosings
It is connected by cavity between several changeover portions, wherein supporting block is set as conical structure, and locating ring is provided in round
Structure and between be more than supporting block；Several described graining ends are disposed as L-shaped structure；The diameter of the support column is respectively greater than
Several confinement sections, the brilliant section of several choosings；The length of the confinement section is 4-6 times of changeover portion；The brilliant section 6 of the choosing and confinement section
5, the joint face of changeover portion 7 is respectively set to pyramidal structure.
The technical program, described several graining ends being used in combination with supporting block, locating ring, several constraints
Section, the brilliant section of several choosings, several changeover portions are respectively set to 10, wherein the brilliant section of starting choosing of the brilliant section of 10 choosings is set as C
Type structure, the brilliant section of terminal choosing are set as horizontal U-shaped structure.
The technical program, the diameter of the brilliant section of starting c-type choosing to the horizontal U-shaped brilliant section of choosing of terminal is incremented by successively.
The technical program, the screw pitch of the brilliant section of described several c-types choosing set gradually for 14mm, 16mm, 18mm, 20mm,
22mm、24mm、26mm、28mm、30mm。
The technical program, a diameter of 2mm-5mm of the brilliant section of c-type choosing.
The technical program, the height of the changeover portion is set as 25mm-35mm, a diameter of 8mm-12mm of changeover portion.
Compared with prior art, a kind of advantageous effect of improved high-efficiency c-type crystal selector of the utility model is：1, brilliant
The probability that stray crystal occurs can be reduced during growing up in grain-by-grain seed selection crystalline substance section, select brilliant section to use the diameter of suitable dimension, both ensure to select
Brilliant efficiency, and ensure the intensity of the brilliant section of choosing, ensures the smooth molding of crystal grain, brilliant section is selected to use rational raising angle, can be with
While ensureing that crystal grain is smoothly grown up, it is also ensured that the brilliant section height of choosing will not be excessively high, to improve work efficiency；2,10
Graining end, confinement section, the brilliant section of choosing and the changeover portion and size being used in combination are different, improve the producing efficiency of crystal selector and subtract
The small probability that stray crystal occurs significantly improves the brilliant efficiency of choosing.
Description of the drawings
Fig. 1 is a kind of structural schematic diagram of improved high-efficiency c-type crystal selector of the utility model；
Wherein, serial number mark is as follows in figure：1- supporting blocks, 2- locating rings, 3- support columns, 4- grainings end, 5- confinement sections, 6-
The brilliant section of choosing, 7- changeover portions.
Specific implementation mode
In the following with reference to the drawings and specific embodiments, the utility model is furtherd elucidate.
A kind of improved high-efficiency c-type crystal selector as shown in Figure 1, by supporting block 1, and the support that is arranged in supporting block 1
Column 3, and the locating ring 2 in 3 end of support column is set, and several graining ends 4 for being uniformly arranged in supporting block 1, and if with
Several confinement sections 5 that a graining end 4 is used in combination are done, and several choosing crystalline substances being used in combination with several confinement sections 5
Section 6, and formed with several changeover portions 7 with what several choosing crystalline substance sections 6 were used in combination, wherein one end of several changeover portions 7
It is connect respectively with locating ring 2；If the supporting block 1, locating ring 2, support column 3, several graining ends 4, several confinement sections 5,
It is connected by cavity between the dry brilliant section 6 of choosing and several changeover portions 7, wherein supporting block 1 is set as conical structure, fixed
Position circle 2 be provided in round structure and between be more than supporting block 1；Several described graining ends 4 are disposed as L-shaped structure；The branch
The diameter of dagger 3 is respectively greater than several confinement sections 5, several choosing crystalline substance sections 6；The length of the confinement section 5 is the 4- of changeover portion 7
6 times；The brilliant section 6 of choosing and the joint face of confinement section 5, changeover portion 7 are respectively set to pyramidal structure.
It is further preferred that described several graining ends 4 being used in combination with supporting block 1, locating ring 2, several about
Beam section 5, the brilliant section 6 of several choosings, several changeover portions 7 are respectively set to 10, wherein brilliant section 6 is selected in the starting of 10 choosing crystalline substance sections 6
It is set as c-type structure, terminal choosing crystalline substance section 6 is set as horizontal U-shaped structure；And the starting c-type choosing crystalline substance section 6 is brilliant to the horizontal U-shaped choosing of terminal
The diameter of section 6 is incremented by successively；And the screw pitch of the brilliant section of described several c-types choosing 6 set gradually for 10mm, 14mm, 16mm, 18mm,
20mm, 22mm, 24mm, 26mm, 28mm, 30mm or 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm,
32mm；And the c-type selects a diameter of 2mm-5mm of brilliant section 6；And the height of the changeover portion 7 is set as 25mm-35mm, transition
A diameter of 8mm-12mm of section 7, said structure design, one side crystal grain selects in brilliant section can reduce generation stray crystal during growth
Probability, select brilliant section to use the diameter of suitable dimension, not only ensure to select brilliant efficiency, but also ensure the intensity of the brilliant section of choosing, ensure crystal grain
Smoothly molding selects brilliant section to use rational raising angle, it is ensured that while crystal grain is smoothly grown up, it is also ensured that choosing is brilliant
Duan Gaodu will not be excessively high, and to improve work efficiency, on the other hand 10 graining ends for being used in combination, confinement section, choosing are brilliant
Section is different with changeover portion and size, improves the producing efficiency of crystal selector and reduces the probability that stray crystal occurs, it is brilliant to significantly improve choosing
Efficiency.
The improved high-efficiency c-type crystal selector of this structure, 1, using the research method that is combined with numerical simulation of experiment, it observes
Crystal grain competitive growth and the superseded process collection of illustrative plates of selection during brilliant from seeding to choosing, and by dendrite in the brilliant channel of choosing
The observation of competitive growth mode, finding can be gradual during the crystal grain during choosing is brilliant on the inside of channel is in competitive growth
Advantage is occupied, is eliminated far from the crystal grain on the inside of channel, and propose dendrite competition and growing model of stand in two-dimensional channel；2, it has investigated not
With the choosing crystalline substance effect of geometric parameter two dimension crystal selector, the relationship between crystal selector geometric parameter and crystal orientation is established, comprehensively
The affecting laws inquired into and tentatively illustrate directional solidification and founding parameter to the brilliant effect of choosing are design and the industry life of crystal selector
The good nickel-base high-temperature single crystal alloy of orientation is prepared in production provides technical foundation；3, the choosing of set of system Journal of Sex Research two dimension is devised
The design scheme of brilliant device, and the monocrystalline sample of even tissue is prepared for using the type crystal selector by method for numerical simulation, analysis
Improved high-efficiency c-type crystal selector module（Totally 10 kinds of different parameters）Grain structure develops, selects brilliant efficiency in the brilliant channel of choosing, is new
The design of generation crystal selector provides reference；4, the method that whole 3D printing can be used is closed to the design of two-dimentional crystal selector and is able to reality
It tests, greatly accelerates research progress, simultaneously because the precision of 3D printing is consistent with the model accuracy of simulation, substantially increase simulation
Accuracy；5, two-dimentional crystal selector with this configuration can be applied in the industrial production of crystal separation method combination seed-grain method simultaneously, knot
The oriented control of single crystal preparation and the secondary orientation of monocrystalline can be applied to simultaneously by closing seed-grain method, be provided for single crystal blade control of new generation
Theoretical direction and experiment basis.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
It for art personnel, without departing from the principle of this utility model, can also make several improvements, these improvement also should be regarded as
The scope of protection of the utility model.
Claims (6)
1. a kind of improved high-efficiency c-type crystal selector, it is characterised in that：By supporting block（1）, and be arranged in supporting block（1）On branch
Dagger（3）, and be arranged in support column（3）The locating ring of end（2）, and it is uniformly arranged on supporting block（1）On several grainings
End（4）, and with several graining ends（4）Several confinement sections being used in combination（5）, and with several confinement sections（5）Match
Close the brilliant section of several choosings used（6）, and with several brilliant sections of choosing（6）Be used in combination with several changeover portions（7）Composition,
Wherein, several changeover portions（7）One end respectively with locating ring（2）Connection；The supporting block（1）, locating ring（2）, support column
（3）, several graining ends（4）, several confinement sections（5）, several brilliant sections of choosing（6）With several changeover portions（7）Between it is logical
Cross cavity connection, wherein supporting block（1）It is set as conical structure, locating ring（2）Be provided in round structure and between be more than branch
Bracer（1）；Several described graining ends（4）It is disposed as L-shaped structure；The support column（3）Diameter be respectively greater than several
Confinement section（5）, several brilliant sections of choosing（6）；The confinement section（5）Length be changeover portion（7）4-6 times；The brilliant section of the choosing（6）
With confinement section（5）, changeover portion（7）Joint face be respectively set to pyramidal structure.
2. a kind of improved high-efficiency c-type crystal selector according to claim 1, it is characterised in that：Described and supporting block（1）、
Locating ring（2）Several graining ends being used in combination（4）, several confinement sections（5）, several brilliant sections of choosing（6）, several mistakes
Cross section（7）It is respectively set to 10, wherein the brilliant section of 10 choosings（6）The brilliant section of starting choosing（6）It is set as c-type structure, terminal choosing is brilliant
Section（6）It is set as horizontal U-shaped structure.
3. a kind of improved high-efficiency c-type crystal selector according to claim 1, it is characterised in that：The brilliant section of starting c-type choosing
（6）To the brilliant section of the horizontal U-shaped choosing of terminal（6）Diameter it is incremented by successively.
4. a kind of improved high-efficiency c-type crystal selector according to claim 1, it is characterised in that：Several c-types choosing is brilliant
Section（6）Screw pitch set gradually as 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm.
5. a kind of improved high-efficiency c-type crystal selector according to claim 1 or 4, it is characterised in that：The brilliant section of c-type choosing
（6）A diameter of 2mm-5mm.
6. a kind of improved high-efficiency c-type crystal selector according to claim 1 or 2, it is characterised in that：The changeover portion（7）
Height be set as 25mm-35mm, changeover portion（7）A diameter of 8mm-12mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721421497.XU CN207659552U (en) | 2017-10-31 | 2017-10-31 | A kind of improved high-efficiency c-type crystal selector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721421497.XU CN207659552U (en) | 2017-10-31 | 2017-10-31 | A kind of improved high-efficiency c-type crystal selector |
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| CN207659552U true CN207659552U (en) | 2018-07-27 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630248A (en) * | 2017-10-31 | 2018-01-26 | 泰州市金鹰精密铸造有限公司 | A kind of improved high-efficiency c-type crystal selector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107630248A (en) * | 2017-10-31 | 2018-01-26 | 泰州市金鹰精密铸造有限公司 | A kind of improved high-efficiency c-type crystal selector |
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