CN207982237U - A kind of thick big position wax-pattern structure of improvement orientation casting - Google Patents
A kind of thick big position wax-pattern structure of improvement orientation casting Download PDFInfo
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- CN207982237U CN207982237U CN201721675653.5U CN201721675653U CN207982237U CN 207982237 U CN207982237 U CN 207982237U CN 201721675653 U CN201721675653 U CN 201721675653U CN 207982237 U CN207982237 U CN 207982237U
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Abstract
The utility model discloses a kind of thick big position wax-pattern structures of improvement orientation casting, in the tenon wax-pattern lower part both sides, are bonded with rod wax one, rod wax two, rod wax three successively from casting to middle injection tube wax mould；The casting made using the utility model in orienting casting preparation process, it can be substantially reduced the thick big position of orientation casting or section becomes larger the crystallite dimension at position suddenly, it is greatly reduced thick big position or section becomes larger the overproof probability of position crystallite dimension suddenly, to significantly improve orientation casting crystalline grain degree yield rate.
Description
Technical field
The utility model relates generally to high temperature alloy directional solidification field, and in particular to a kind of thick big portion of improvement orientation casting
Position wax-pattern structure.
Background technology
Since last century the fifties, in order to promote the efficiency and function of aero-engine, technical staff successfully answers
Orientation even single crystal forms are made in turbo blade with high temperature alloy directional solidification technique.Due to orientation casting all grain boundaries direction
Identical as the high direction of leaf, the blade of transverse grain boundaries, does not substantially increase the service life of turbo blade.Most recent two decades
Come, it is increasingly urgent with the energy and environmental protection problem, each industrialized country all be dedicated to improving industry gas turbine it is outstanding
It is the efficiency of power station gas turbine.Most important one measure is that the directional solidification blade technical transform of aero-engine is arrived
In the vane manufacturing of large scale industry gas turbine.Since the blade dimensions of gas turbine are much larger than aerial blade, weight increases
Tens times so that orienting the production of casting becomes extremely difficult.So orientation turbo blade production in, by thin location pull to
When thick big position, drawing velocity slows down, and causes solid liquid interface in process of setting unstable, transverse temperature gradient increases, individual crystalline grains
Fast growth simultaneously covers with entire position, the requirement beyond orientation casting crystalline grain size.In addition, if casting has subregion section
Size increases suddenly, also has identical problem and occurs.Therefore by symmetrically adding at thick big position or the section position that becomes larger suddenly
Three various sizes of rod waxs make solid liquid interface from increasing crystal grain that rod wax position is grown and the thick big position of orientation casting or cut
Face becomes larger the crystal grain competitive growth of position growth suddenly, to refine thick big position or section becomes larger the crystal grain at position suddenly.This
Method is to solve the thick big position of orientation casting or section becomes larger an effective means of position coarse grains suddenly.
Utility model content
The purpose of this utility model is to provide a kind of thick big position wax-pattern structures of improvement orientation casting, in orientation casting
The utility model is used in preparation process, can be substantially reduced the thick big position of orientation casting or section becomes larger the crystal grain at position suddenly
Size, is greatly reduced thick big position or section becomes larger the overproof probability of position crystallite dimension suddenly, to significantly improve orientation casting
Part grain size yield rate.
The utility model is achieved through the following technical solutions：
A kind of thick big position wax-pattern structure of improvement orientation casting includes bottom plate wax-pattern and is set in bottom plate wax-pattern
Centre, the middle injection tube wax mould being bonded from bottom to top, sprue cup wax-pattern, on the bottom plate wax-pattern, middle injection tube wax mould periphery is symmetrical arranged
There are six the blade wax-pattern, tenon wax-pattern and the running channel wax-pattern that are bonded successively from bottom to top, the tenon wax-pattern lower part both sides,
It is bonded with rod wax one, rod wax two, rod wax three successively from casting to middle injection tube wax mould.
The rod wax one, rod wax two, rod wax three are successively increased by outside to inside length.
Rod wax one a diameter of 2-4mm, length 12-15mm；Two width of rod wax is 3-5mm, and thickness is
2-4mm, length 14-17mm；Rod wax three a diameter of 4-7mm, length 16-22mm.
Advantageous effect caused by the utility model is：
1. operation is simple, of low cost, the other parameters in experimentation are had no need to change.
The crystallite dimension at position 2. notable refinement orientation casting thick position or section greatly become larger suddenly.
3. orientation casting crystalline grain size qualification rate can be greatly improved, to improve orientation casting qualified rate.
Description of the drawings
Fig. 1 is the sectional view of the utility model wax-pattern structure.
Specific implementation mode
As shown in Figure 1, a kind of thick big position wax-pattern structure of improvement orientation casting, includes bottom plate wax-pattern 1 and setting
In on the center of bottom plate wax-pattern 1, the middle injection tube wax mould 2 being bonded from bottom to top, sprue cup wax-pattern 3, the bottom plate wax-pattern 1, feed trumpet
2 periphery of wax-pattern is arranged symmetrically, and there are six the blade wax-pattern 4, tenon wax-pattern 5 and the running channel wax-pattern 6 that are bonded successively from bottom to top, institutes
The 5 lower part both sides of tenon wax-pattern stated, 2 are bonded with rod wax 1, rod wax 28, rod wax 39 successively from casting to middle injection tube wax mould；
The rod wax 1, rod wax 28, rod wax 39 are successively increased by outside to inside length；
Rod wax one 7 a diameter of 2-4mm, length 12-15mm；28 width of rod wax is 3-5mm, thickness
For 2-4mm, length 14-17mm；Rod wax 39 a diameter of 4-7mm, length 16-22mm.
The utility model is applied to a kind of orientation castings production, casting height is 180mm, and casting material is high temperature alloy
GTD111DS.Prepare three kinds of rod waxs in the wax stage processed, size is a diameter of 2-4mm respectively, and length is the rod wax 1 of 12-15mm；
Width is 3-5mm, and thickness 2-4mm, length is the rod wax 28 of 14-17mm；A diameter of 4-7mm, length are the wax of 16-22mm
Stick 39.In the tenon position both sides of wax-pattern, successively be bonded rod wax 1, rod wax 28, rod wax 39, bonding direction be from casting to
Feed trumpet.Then wax, shell processed, cast and detection processed are carried out according to conventional full form casting process.When embodiment adds rod wax, casting exists
The macrograin degree of tenon (thick big position or section become larger suddenly position), can be clearly visible from three rod waxs by figure and be grown
New crystal grain, the crystal grain grown on new crystal grain and blade is in the competitive growth of tenon position, to refine tenon portion significantly
The crystal grain of position.12 casting are produced in total, are examined through conventional grain size, are had 1 casting to exceed in tenon position die width and are wanted
Ask range, ratio of defects 8.3%.
Comparative example produces 12, identical casting according to identical material, technological parameter and working condition in above-described embodiment,
But three kinds of rod waxs of the present invention are not used, when embodiment is not added with rod wax, (thick big position or section are prominent at tenon position for casting
So become larger position) macrograin degree, crystal grain is significantly wider.It is examined through conventional grain size, has 7 casting in tenon position crystalline substance
Grain width exceeds claimed range, ratio of defects 58.3%.
As it can be seen that the technology of the application present invention, it can effectively change the thick big position of orientation casting or section becomes larger position suddenly
Crystallite dimension makes the grain size qualification rate of orientation casting be substantially improved.
Claims (3)
1. a kind of thick big position wax-pattern structure of improvement orientation casting includes bottom plate wax-pattern and is set in bottom plate wax-pattern
Centre, the middle injection tube wax mould being bonded from bottom to top, sprue cup wax-pattern, on the bottom plate wax-pattern, middle injection tube wax mould periphery is symmetrical arranged
There are six the blade wax-pattern, tenon wax-pattern and the running channel wax-patterns that are bonded successively from bottom to top, it is characterised in that：The tenon wax
Mould lower part
Both sides are bonded with rod wax one, rod wax two, rod wax three successively from casting to middle injection tube wax mould.
2. a kind of thick big position wax-pattern structure of improvement orientation casting according to claim 1, it is characterised in that：The wax
Stick one, rod wax two, rod wax three are successively increased by outside to inside length.
3. a kind of thick big position wax-pattern structure of improvement orientation casting according to claim 1, it is characterised in that：Described
Rod wax one a diameter of 2-4mm, length 12-15mm；Two width of rod wax is 3-5mm, thickness 2-4mm, length 14-
17mm；Rod wax three a diameter of 4-7mm, length 16-22mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721675653.5U CN207982237U (en) | 2017-12-06 | 2017-12-06 | A kind of thick big position wax-pattern structure of improvement orientation casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721675653.5U CN207982237U (en) | 2017-12-06 | 2017-12-06 | A kind of thick big position wax-pattern structure of improvement orientation casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207982237U true CN207982237U (en) | 2018-10-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721675653.5U Active CN207982237U (en) | 2017-12-06 | 2017-12-06 | A kind of thick big position wax-pattern structure of improvement orientation casting |
Country Status (1)
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| CN (1) | CN207982237U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107983911A (en) * | 2017-12-06 | 2018-05-04 | 安徽应流航源动力科技有限公司 | A kind of method for the position crystallite dimension that become larger suddenly using the thick big position of wax-pattern structure preparation improvement orientation casting or section |
-
2017
- 2017-12-06 CN CN201721675653.5U patent/CN207982237U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107983911A (en) * | 2017-12-06 | 2018-05-04 | 安徽应流航源动力科技有限公司 | A kind of method for the position crystallite dimension that become larger suddenly using the thick big position of wax-pattern structure preparation improvement orientation casting or section |
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