CN104070138B - A kind of mould for spiral crystal selector and manufacture method thereof - Google Patents
A kind of mould for spiral crystal selector and manufacture method thereof Download PDFInfo
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- CN104070138B CN104070138B CN201410308661.0A CN201410308661A CN104070138B CN 104070138 B CN104070138 B CN 104070138B CN 201410308661 A CN201410308661 A CN 201410308661A CN 104070138 B CN104070138 B CN 104070138B
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Abstract
The present invention relates to single crystal blade and manufactures field, refers in particular to a kind of mould for spiral crystal selector and manufacture method thereof.Described mould structure is relatively simple, and profile is cuboid, and its assembly includes mold base and lower mold base, and mold base both sides are offered U-type groove respectively, fastened upper and lower mold base by bolt and nut；Upper cores and lower die it is divided into inside mold base, its material selection soft high-elasticity material, die constitutes screw selecting crystalline substance type chamber, running channel and wax injection nozzle up and down, wherein screw selecting crystalline substance type chamber is made up of seeding section, spiral section and changeover portion, several are additionally had to position hole on die, whole mold parting surface is plane, and upper and lower die hinders has a movable opening at die sinking.The novel die of the present invention, crystal selector wax-pattern can one-shot forming, maximum advantage is that mold parting surface is plane, enormously simplify the preparation process of crystal selector, avoids the manufacturing process that metal die is complicated simultaneously, has saved production cost.
Description
Technical field
The present invention relates to single crystal blade and manufactures field, refers in particular to a kind of mould for spiral crystal selector and manufacture method thereof.
Background technology
Along with aero-engine and the development of gas turbine manufacturing technology, manufacture high-performance, long-life single crystal blade become
One of key technology of China's new and high technology manufacturing industry development；And the appearance of single crystal super alloy, before making aero-turbine
Temperature increases substantially, and thrust increases, and oil consumption reduces；Single crystal blade can be obtained by seed-grain method and screw selecting crystallization, wherein spiral shell
Rotation crystal separation method has the features such as technique is simple, workable, with short production cycle and is widely used, therefore, at short notice
Develop high-quality, low cost, high added value spiral crystal selector mould extremely the most urgent.
From profile, spiral crystal selector can be seen that its structure is complex, be made up of seeding section, spiral section and changeover portion；Special
Being not spiral section, owing to its special profile determines the complexity of its die sinking, particularly metal die, its helical structure is processed
Difficulty is big, needs the curved surface of complicated loose piece and insert or complexity just can complete die sinking, takes out wax-pattern, and this will be to making
The precision of spiral crystal selector and form make a big impact, meanwhile, these defects of spiral crystal selector will have a strong impact on monocrystalline
Molding.
The Chinese patent of Patent No. CN102205391A and CN102794402A individually discloses a kind of spiral crystal selector
Mould, their common ground is all metal die, thus the complexity of all unavoidable die sinking；Wherein Patent No.
The patent of CN102205391A, it specifically describes insert in metal outer mold and metal, and in metal, insert is fixedly installed on metal
In outer mold cavity, insert totally four pieces and rotate respectively and be arranged at internal four drift angles of metal outer mold, edge in metal after casting in metal
Block takes out together with wax-pattern, and in 45 ° of directions separate four nugget genus the most in order, insert i.e. can get screw selecting crystalline substance device wax-pattern,
Therefore, although its die joint is level, but spiral crystal selector one-shot forming needs four inserts jointly to complete, and this not only increases
Having added manufacturing cost, the scale error accumulation of four inserts, have impact on the precision of wax-pattern simultaneously, needs soon certain angle during die sinking
Degree just can obtain wax-pattern, and this is greatly increased the difficulty of die sinking；For the patent of Patent No. CN102794402A, it is specifically retouched
State the casted die mould of a kind of single crystal blade spiral crystal selector, its rectangular structure, it is made up of upper die and lower die, seeding section and mistake
The mold parting surface at the section of crossing place is plane, and the mold parting surface at spiral section place is curved surface, the parting line on its curved surface die joint
It is parallel to the parting line of plane die joint, and has two intersection points with spiral section relevant position is intersected along the cross section in mold height direction
For point of contact, and making cross section tangent line along mold height direction, curved surface parting line is vertical with this tangent line, and such design changes spiral
The feature of crystal selector regular helix, have impact on the precision of crystal selector, and the most also effect brilliant on choosing has certain impact, additionally complicated
The design of curved surface adds difficulty of processing and production cost.
The present invention is directed to the deficiency of existing mold technology, the problem overcoming die sinking difficulty, have employed high elasticity soft material system
Make die, and leave active open hindering at die sinking, so make the demoulding efficient quick of spiral crystal selector wax-pattern, dimensional accuracy
It is greatly improved.
Summary of the invention
The Novel die structure of the spiral crystal selector of the present invention is relatively simple, and profile is cuboid, and its assembly includes mold base
With lower mold base, it is characterised in that: being respectively equipped with upper cores and lower die inside described upper mold base and lower mold base, upper and lower die forms
Screw selecting crystalline substance type chamber, running channel and wax injection nozzle, wherein screw selecting crystalline substance type chamber is made up of seeding section, spiral section and changeover portion,
Several are additionally had to position hole on die；Whole mold parting surface is plane, and upper and lower die hinders has movable opening at die sinking
Mouthful.
Further, the both sides of described upper mold base and lower mold base offer U-type groove respectively, fasten upper and lower mould by bolt and nut
Embryo.
Described upper and lower mold base material is metal material, and dimensions length exists at 30-50mm, height at 80-100mm, width
30-50mm。
Further, described upper and lower mold base material is for for 6063 aluminium alloys.
The described size of die up and down is corresponding with upper and lower mold base size, upper and lower die just can be respectively filled in mold base and
Lower mold base；Material has mobility, can solidify through about 3h, to have elastic and tear-resistant property after solidification simultaneously,
The high temperature of the most resistance to 180-220 DEG C and molecular structure does not destroys, durable in use.
Further, the material of described upper and lower die is HC-9030 silica gel.
The opening of described activity to seal when Guan Bi, and anti-leak-stopping wax, when opening, resistance can not be the biggest simultaneously；The present invention is
Use blade to hinder at upper and lower die and scratch an opening at die sinking, it is ensured that the wax-pattern of spiral crystal selector can take out.
The manufacture method of the novel die of a kind of spiral crystal selector is:
(1) make one with hard material to be placed on horizontal with the framework of mold base consistent size.
(2) the die sinking mud that thickness is 15-25mm is laid in framework, by brilliant for the screw selecting scribbling the band running channel of releasing agent
In 1/2 embedment die sinking mud of device wax-pattern thickness, and hole, some location is stayed in the optional position on die sinking mud.
(3) cast forms the material of lower die, moves into and solidifies under vacuum, take die sinking mud after solidification away, takes hindering wax-pattern
Scratch a movable opening on the lower die gone out, make wax-pattern freely to take out.
(4) wax-pattern is put in lower die by original position again, coating release agent, again the material forming upper cores is poured into
Stereoplasm frame, moves into vacuum solidification, takes out lower die, scratches an opening, will obtain in the upper cores hindering wax-pattern to take out
Die up and down embed in upper and lower mold base, the making of mould can be completed.
Advantages of the present invention: the present invention is to select soft high-elasticity material with the advantage of other metal spiral crystal selector moulds
Making die, first this greatly reduce production cost；Secondly novel die uses horizontal parting, and die joint is plane,
Due to elasticity and the characteristic such as tear-resistant of die material, hindering the openning leaving free-open-close at die sinking, greatly simplify out
Mould difficulty；The most important thing is, manufacture that the material therefor of this mould is relatively simple easily to be sought.
Accompanying drawing explanation
Fig. 1 is the silica gel mould schematic diagram of spiral crystal selector wax-pattern.
Fig. 2 is the silica gel mould die joint schematic diagram of spiral crystal selector wax-pattern.
Fig. 3 is the spiral crystal selector wax-pattern schematic diagram of band running channel.
Fig. 4 is the spiral crystal selector wax-pattern made by this novel die.
Fig. 5 is the single crystal blade that the screw selecting crystalline substance utilizing this mould to produce is made.
In figure: 1 wax injection nozzle, 2 running channels, mold base on 3,4U type groove, 5 holes, location, 6 changeover portions, the opening of 7 activities
Mouth, 8 seeding sections, 9 upper cores, 10 times dies, 11 spiral crystal selector spiral section die cavities, 12 screw selecting crystalline substance type chambeies, 13
Lower mold base, the spiral crystal selector wax-pattern of 14 band running channels.
Detailed description of the invention
Mould making method in accordance with the above, selects metal mold base and silica gel die as mould main material, makes
The novel die of spiral crystal selector.
The novel die for spiral crystal selector of the present invention, as it is shown in figure 1, its assembly includes mold base 3 and lower mold base
13, material is 6063 aluminium alloys, and mold base both sides are offered U-type groove 4 respectively, clamped by bolt and nut；It is divided into inside mold base
Upper cores 9 and lower die 10, its material is HC-9030 silica gel, and upper and lower die constitutes screw selecting crystalline substance type chamber 12, running channel
2 and wax injection nozzle 1, wherein screw selecting crystalline substance type chamber is made up of seeding section 8, spiral section 11 and changeover portion 6, additionally die up and down
On have 8 location hole 5, upper cores is invaginated type, and lower die is convex shape；Whole mold parting surface is plane (such as Fig. 2),
Die hinders and scratches a movable opening 7 at die sinking up and down, it is ensured that the wax-pattern of spiral crystal selector can take out.
Production program for the novel die of spiral crystal selector is first to build one 48 with overmolded building blocks (hard material)
The framework of × 100 × 46mm is placed in horizontal table top uniform application vaseline on perisporium, by the die sinking mud of thickness 23mm
It is laid in framework, imbeds in die sinking mud by the 1/2 of the spiral crystal selector wax-pattern 14 (such as Fig. 3) of the band running channel welded with wax,
Mend die sinking mud, it is ensured that point mould mud surface level, without depression, presses hole, 8 location in the region of wax-pattern periphery with column, will
HC-9030 silica gel mixing and stirring is poured in overmolded building blocks, moves into and solidified after 3 hours under vacuum, takes overmolded after solidification apart
Building blocks, take die sinking mud away, use die under blade to hinder at die sinking and scratch an opening, it is ensured that the wax-pattern of spiral crystal selector can
Take out；Wax-pattern is put in former Silicon moulds by original position, at former Silicon moulds upper surface uniform application vaseline, again by HC-
9030 silica gel mixing and stirring are poured in overmolded building blocks, move into and solidify after 3 hours under vacuum, take out lower mold, use cutter
Sheet hinders in upper cores scratches an opening at die sinking, it is ensured that the wax-pattern of spiral crystal selector can take out.The die up and down that will obtain
Embed in mold base, the making of silica gel mould can be completed.
A kind of step for the novel die casting molding of spiral crystal selector of the employing present invention is:
Uniform application vaseline on the die cavity of upper and lower die, gets togather set of molds respectively, clamps at U-type groove with bolt and nut.
Being put on wax injector by the mould combined, penetrate wax temperature and be maintained at 70-80 DEG C, the dwell time is 9-13s, cools down 30-60s
After open binding nut, slow divided mould, take out spiral crystal selector wax-pattern (such as Fig. 4), utilize this novel die to draw
The monocrystalline that spiral crystal selector is produced is as shown in Figure 5.
Claims (8)
1. the mould for spiral crystal selector, profile is cuboid, its assembly includes mold base and lower mold base, it is characterized in that: inside described upper mold base and lower mold base, be respectively equipped with upper cores and lower die, die constitutes screw selecting crystalline substance type chamber, running channel and wax injection nozzle up and down, wherein screw selecting crystalline substance type chamber is made up of seeding section, spiral section and changeover portion, additionally has several to position hole on die；Whole mold parting surface is plane, and upper and lower die hinders has a movable opening at die sinking；Up and down the material of die has mobility, can solidify through 3h, to have elastic and tear-resistant property after solidifying simultaneously, the high temperature of the most resistance to 180-220 DEG C and molecular structure does not destroys, durable in use.
A kind of mould for spiral crystal selector, it is characterised in that: the both sides of described upper mold base and lower mold base offer U-type groove respectively, fasten upper and lower mold base by bolt and nut.
A kind of mould for spiral crystal selector, it is characterised in that: described upper and lower mold base dimensions length is at 80-100mm, and width is at 30-50mm, and height is at 30-50mm.
A kind of mould for spiral crystal selector, it is characterised in that: described upper and lower mold base material is 6063 aluminium alloys.
A kind of mould for spiral crystal selector, it is characterised in that: the described size of die up and down is corresponding with upper and lower mold base size, and upper and lower die can be respectively filled in mold base and lower mold base just.
A kind of mould for spiral crystal selector, it is characterised in that: the material of described upper and lower die is HC-9030 silica gel.
A kind of mould for spiral crystal selector, it is characterised in that: the opening of described activity to seal when Guan Bi, and anti-leak-stopping wax, when opening, resistance can not be the biggest simultaneously；Use blade to hinder at upper and lower die and scratch an opening at die sinking, it is ensured that the wax-pattern of spiral crystal selector can take out.
The manufacture method of a kind of mould for spiral crystal selector, it is characterised in that comprise the steps:
(1) make one with hard material to be placed on horizontal with the framework of mold base consistent size；
(2) the die sinking mud that thickness is 15-25mm is laid in framework, imbeds scribble the spiral crystal selector wax-pattern thickness of the band running channel of releasing agent 1/2 in die sinking mud, and hole, some location is stayed in the optional position on die sinking mud；
(3) cast forms the material of lower die, moves into and solidifies under vacuum, take die sinking mud after solidification away, scratches a movable opening, make wax-pattern freely to take out on the lower die hindering wax-pattern to take out；
(4) wax-pattern is put in lower die by original position again, coating release agent, again pour the material forming upper cores into stereoplasm frame, move into vacuum solidification, take out lower die, the upper cores hindering wax-pattern to take out scratches an opening, the die up and down obtained is embedded in upper and lower mold base, the making of mould can be completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410308661.0A CN104070138B (en) | 2014-07-02 | 2014-07-02 | A kind of mould for spiral crystal selector and manufacture method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410308661.0A CN104070138B (en) | 2014-07-02 | 2014-07-02 | A kind of mould for spiral crystal selector and manufacture method thereof |
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| Publication Number | Publication Date |
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| CN104070138A CN104070138A (en) | 2014-10-01 |
| CN104070138B true CN104070138B (en) | 2016-08-24 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105414482B (en) * | 2015-11-11 | 2017-11-07 | 沈阳黎明航空发动机(集团)有限责任公司 | A kind of high-strength ceramic the initial segment and preparation method thereof |
| CN105328117A (en) * | 2015-12-02 | 2016-02-17 | 株洲中航动力精密铸造有限公司 | Single-crystal blade wax pattern combination assembly clamp and single-crystal blade wax pattern combination assembly method |
| CN105290333B (en) * | 2015-12-02 | 2017-10-27 | 株洲中航动力精密铸造有限公司 | Bottom gating |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562523A (en) * | 2004-04-12 | 2005-01-12 | 齐志威 | Mould castings method |
| CN102205391A (en) * | 2011-04-28 | 2011-10-05 | 上海交通大学 | Device and method for manufacturing spiral grain selection device for high-temperature alloy single crystal growth |
| CN102794402A (en) * | 2012-08-21 | 2012-11-28 | 沈阳黎明航空发动机(集团)有限责任公司 | Profiling die of single crystal blade spiral crystal selector |
| CN102806310A (en) * | 2011-05-30 | 2012-12-05 | 上海浦宇铜艺装饰制品有限公司 | Metal component casting process |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1034280A (en) * | 1996-05-24 | 1998-02-10 | Mitsubishi Heavy Ind Ltd | Mold for precision molding of single crystal |
| JP2001232445A (en) * | 2000-02-23 | 2001-08-28 | Mitsubishi Heavy Ind Ltd | Manufacturing method for mold for single crystal precision casting |
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- 2014-07-02 CN CN201410308661.0A patent/CN104070138B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1562523A (en) * | 2004-04-12 | 2005-01-12 | 齐志威 | Mould castings method |
| CN102205391A (en) * | 2011-04-28 | 2011-10-05 | 上海交通大学 | Device and method for manufacturing spiral grain selection device for high-temperature alloy single crystal growth |
| CN102806310A (en) * | 2011-05-30 | 2012-12-05 | 上海浦宇铜艺装饰制品有限公司 | Metal component casting process |
| CN102794402A (en) * | 2012-08-21 | 2012-11-28 | 沈阳黎明航空发动机(集团)有限责任公司 | Profiling die of single crystal blade spiral crystal selector |
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