CN104070138A - Die for helical crystal selector and manufacture method of die - Google Patents

Die for helical crystal selector and manufacture method of die Download PDF

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Publication number
CN104070138A
CN104070138A CN201410308661.0A CN201410308661A CN104070138A CN 104070138 A CN104070138 A CN 104070138A CN 201410308661 A CN201410308661 A CN 201410308661A CN 104070138 A CN104070138 A CN 104070138A
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China
Prior art keywords
die
mold base
crystal selector
wax
mould
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CN201410308661.0A
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Chinese (zh)
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CN104070138B (en
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赵玉涛
张力
贾志宏
梁向锋
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Jiangsu University
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Jiangsu University
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Abstract

The invention relates to the manufacturing field of a single crystal blade, in particular a die for a helical crystal selector and a manufacture method of the die. The die has a simple structure, is cuboid in appearance, and comprises an upper die base and a lower die base, wherein two sides of each die base are respectively provided with a U-shaped groove, and the upper die base and the lower die base are fastened through bolts and nuts; the interior of each die base is divided into an upper die core and a lower die core made of soft high-elastic materials, the upper die core and the lower die core form a helical crystal selector cavity, a pouring gate and a wax injection nozzle; the helical crystal selector cavity is composed of a crystal guiding section, a helical section and a transition section, and a plurality of positioning holes are formed in the die core; the whole die joint face is a plane, and a movable opening is formed in a die-opening position hindered by the upper die core and the lower die core. According to the novel die provided by the invention, a crystal selector wax pattern can be formed in one step, and the die has the obvious advantage that the die joint surface is the plane, the preparation process of the crystal selector is greatly simplified, the complex manufacture process of the metal die is avoided, and the production cost is lowered.

Description

A kind of mould for spiral crystal selector and manufacture method thereof
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 the development of aero-engine and 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 increases substantially the front temperature of aero-turbine, thrust increases, fuel consumption reduction; Single crystal blade can obtain by seed crystal method and spiral crystal separation method, wherein spiral crystal separation method has the features such as technique is simple, workable, with short production cycle and is widely used, therefore, develop at short notice the spiral crystal selector mould of high-quality, low cost, high added value extremely urgent.
Spiral crystal selector can find out that from profile its structure is comparatively complicated, is made up of seeding section, spiral section and changeover portion; Particularly spiral section, because its special profile has determined the complexity of its die sinking, particularly metal die, its helical structure difficulty of processing is large, need complicated loose piece and insert or complicated curved surface just can complete die sinking, taking out wax-pattern, this will make a big impact to precision and the form of the spiral crystal selector of making, meanwhile, these defects of spiral crystal selector will have a strong impact on the moulding of monocrystalline.
The patent No. is that the Chinese patent of CN102205391A and CN102794402A discloses respectively a kind of spiral crystal selector mould, and their common ground is all metal die, thus complexity of unavoidable die sinking all, the patent that wherein patent No. is CN102205391A, it has specifically described in metal outer mold and metal and has inserted, in metal, insert and be fixedly installed in metal outer mold inner chamber, in metal, insert totally four and rotate respectively and be arranged at inner four drift angles of metal outer mold, after casting, in metal, insert and take out together with wax-pattern, 45 ° of directions separate in four blocks of metals and insert and can obtain spiral crystal selector wax-pattern in order respectively, therefore, although its die joint is level, but four of spiral crystal selector one-shot forming needs are inserted and are jointly completed, this has not only increased manufacturing cost, four scale error accumulations of inserting simultaneously, affect the precision of wax-pattern, when die sinking, need soon certain angle just can obtain wax-pattern, this increases the difficulty of die sinking greatly, the patent that is CN102794402A for the patent No., it has specifically described a kind of casted die mould of single crystal blade spiral crystal selector, its rectangular structure, formed by upper die and lower die, the mold parting surface at seeding section and changeover portion place is plane, the mold parting surface at spiral section place is curved surface, parting line on its curved surface die joint is parallel to the parting line of plane die joint, and be point of contact with spiral section relevant position along crossing two intersection points that have in the cross section of mold height direction, and make cross section tangent line along mold height direction, curved surface parting line is vertical with this tangent line, such design has changed the feature of spiral crystal selector regular helix, affect the precision of crystal selector, simultaneously also to selecting brilliant effect to have certain influence, the design of complicated curved surface has increased difficulty of processing and production cost in addition.
The present invention is directed to the deficiency of existing mold technology, overcome the problem of die sinking difficulty, adopted high elasticity soft material to make die, and leave active open in obstruction die sinking place, make like this demoulding efficient quick of spiral crystal selector wax-pattern, dimensional accuracy improves greatly.
Summary of the invention
The Novel die structure of spiral crystal selector of the present invention is comparatively simple, profile is cuboid, its assembly comprises mold base and lower mold base, it is characterized in that: described upper mold base and lower mold base inside are respectively equipped with upper cores and lower die, upper and lower die has formed the brilliant type of screw selecting chamber, running channel and wax injection nozzle, wherein the brilliant type of screw selecting chamber is made up of seeding section, spiral section and changeover portion, has in addition several locating holes on die; Whole mold parting surface is plane, and upper and lower die hinders die sinking place a movable opening.
Further, U-shaped groove is offered respectively in the both sides of described upper mold base and lower mold base, by the fastening upper and lower mold base of bolt and nut.
Described upper and lower mold base material is metal material, and dimensions length is at 80-100mm, and width is at 30-50mm, and height is at 30-50mm.
Further, described upper and lower mold base material is for being 6063 aluminium alloys.
The described size of die is up and down corresponding with upper and lower mold base size, and upper and lower die can be inserted respectively mold base and lower mold base just; Material has mobility, can occur to solidify through about 3h, will have elasticity and anti-tear drawing property after simultaneously curing, and the while high temperature of resistance to 180-220 DEG C and molecular structure does not destroy is durable in use.
Further, the material of described upper and lower die is HC-9030 silica gel.
The opening of described activity will seal in the time of closure, anti-leak-stopping wax, and while opening, resistance can not be too large simultaneously; The present invention adopts blade to hinder die sinking place at upper and lower die to scratch an opening, guarantees that the wax-pattern of spiral crystal selector can take out.
A kind of preparation method of novel die of spiral crystal selector is:
(1) making one with hard material is placed on horizontal with the framework of mold base consistent size.
(2) the die sinking mud that is 15-25mm by thickness is laid in framework, will scribble 1/2 the imbedding in die sinking mud of the spiral crystal selector wax-pattern thickness with running channel of releasing agent, and some locating holes are stayed in optional position on die sinking mud.
(3) material of the lower die of cast formation, moves under vacuum and solidifies, and after solidifying, takes die sinking mud away, on the lower die taking out, scratches a movable opening at obstruction wax-pattern, and wax-pattern can freely be taken out.
(4) wax-pattern is put into lower die by original position again, coating release agent, again pour the material that forms upper cores into stereoplasm frame, move into vacuum solidification, take out lower die, in the upper cores that hinders wax-pattern taking-up, scratch an opening, the die up and down obtaining is embedded in upper and lower mold base, can complete the making of mould.
Advantage of the present invention: the advantage of the present invention and other metal spiral crystal selector moulds is to select soft highly elastic material to make die, and first this greatly reduce production cost; Secondly what novel die adopted is horizontal parting, and die joint is plane, due to the elasticity of die material and the anti-tear characteristic such as draw, hindering die sinking place and leave the openning of free-open-close, has simplified greatly die sinking difficulty; The most important thing is, the material therefor of manufacturing this mould is comparatively simple and easy to seek.
Brief description of the drawings
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 with running channel.
Fig. 4 is the spiral crystal selector wax-pattern of making by this novel die.
Fig. 5 is the single crystal blade that utilizes the screw selecting crystalline substance of this mould production to make.
In figure: the opening of mold base, 4 U-shaped grooves, 5 locating holes, 6 changeover portions, 7 activities on 1 wax injection nozzle, 2 running channels, 3,8 seeding sections, 9 times dies, 10 upper cores, 11 spiral crystal selector spiral section die cavities, the brilliant type of 12 screw selectings chambeies, the spiral crystal selector wax-pattern of 13 times mold bases, 14 with running channel.
Detailed description of the invention
According to above-described mould making method, select metal mold base and silica gel die as mould main material, make the novel die of spiral crystal selector.
Novel die for spiral crystal selector of the present invention, as shown in Figure 1, its assembly comprises mold base 3 and lower mold base 13, and material is 6063 aluminium alloys, and U-shaped groove 4 is offered respectively in mold base both sides, clamps by bolt and nut; Mold base inside is divided into upper cores 9 and lower die 10, its material is HC-9030 silica gel, upper and lower die has formed the brilliant type of screw selecting chamber 12, running channel 2 and wax injection nozzle 1, wherein the brilliant type of screw selecting chamber is made up of seeding section 8, spiral section 11 and changeover portion 6, on upper and lower die, have 8 locating holes 5 in addition, upper cores is invaginated type, and lower die is convex shape; Whole mold parting surface is plane (as Fig. 2), and upper and lower die hinders die sinking place and scratches a movable opening 7, guarantees that the wax-pattern of spiral crystal selector can take out.
First to build the framework of 48 × 100 × 46mm and be placed on and in horizontal table top, on perisporium, evenly smear vaseline with turning over mould building blocks (hard material) for the production program of the novel die of spiral crystal selector, the die sinking mud of thickness 23mm is laid in framework, by the spiral crystal selector wax-pattern 14(with running channel welding with wax as Fig. 3) 1/2 imbed in die sinking mud, mend die sinking mud, guarantee that parting mud surface level is without depression, 8 locating holes are pressed with column in region at wax-pattern periphery, HC-9030 silica gel mixing and stirring is poured into and turned in mould building blocks, move under vacuum and solidified after 3 hours, after solidifying, take apart and turn over mould building blocks, take die sinking mud away, adopt die obstruction die sinking place under blade to scratch an opening, the wax-pattern of guaranteeing spiral crystal selector can take out, wax-pattern is put into former silica gel mould by original position, evenly smear vaseline at former silica gel mould upper surface, again HC-9030 silica gel mixing and stirring is poured into and turned in mould building blocks, move under vacuum and solidified after 3 hours, take out counterdie, adopt blade to hinder die sinking place in upper cores and scratch an opening, guarantee that the wax-pattern of spiral crystal selector can take out.The die up and down obtaining is embedded in mold base, can complete the making of silica gel mould.
Adopt the step of a kind of novel die casting moulding for spiral crystal selector of the present invention to be:
On the die cavity of upper and lower die, evenly smear vaseline respectively, set of molds is got togather, use bolt and nut to clamp at U-shaped groove place.The mould combining is put on wax injector, penetrate wax temperature and remain on 70-80 DEG C, dwell time is 9-13s, after cooling 30-60s, open binding nut, slowly divided mould, take out spiral crystal selector wax-pattern (as Fig. 4), utilize monocrystalline that spiral crystal selector that this novel die draws produces as shown in Figure 5.

Claims (8)

1. the mould for spiral crystal selector, profile is cuboid, its assembly comprises mold base and lower mold base, it is characterized in that: described upper mold base and lower mold base inside are respectively equipped with upper cores and lower die, upper and lower die has formed the brilliant type of screw selecting chamber, running channel and wax injection nozzle, wherein the brilliant type of screw selecting chamber is made up of seeding section, spiral section and changeover portion, has in addition several locating holes on die; Whole mold parting surface is plane, and upper and lower die hinders die sinking place a movable opening.
2. a kind of mould for spiral crystal selector as claimed in claim 1, is characterized in that: U-shaped groove is offered respectively in the both sides of described upper mold base and lower mold base, by the fastening upper and lower mold base of bolt and nut.
3. a kind of mould for spiral crystal selector as claimed in claim 1, is characterized in that: described upper and lower mold base material is metal material, and dimensions length is at 80-100mm, and width is at 30-50mm, and height is at 30-50mm.
4. a kind of mould for spiral crystal selector as claimed in claim 3, is characterized in that: described upper and lower mold base material is for being 6063 aluminium alloys.
5. a kind of mould for spiral crystal selector as claimed in claim 1, is characterized in that: the described size of die is up and down corresponding with upper and lower mold base size, and upper and lower die can be inserted respectively mold base and lower mold base just; Material has mobility, can occur to solidify through about 3h, will have elasticity and anti-tear drawing property after simultaneously curing, and the while high temperature of resistance to 180-220 DEG C and molecular structure does not destroy is durable in use.
6. a kind of mould for spiral crystal selector as claimed in claim 5, is characterized in that: the material of described upper and lower die is HC-9030 silica gel.
7. a kind of mould for spiral crystal selector as claimed in claim 1, is characterized in that: the opening of described activity will seal in the time of closure, anti-leak-stopping wax, and while opening, resistance can not be too large simultaneously; Adopt blade to hinder die sinking place at upper and lower die and scratch an opening, guarantee that the wax-pattern of spiral crystal selector can take out.
8. the preparation method of the mould of a kind of spiral crystal selector as claimed in claim 1, is characterized in that comprising the steps:
(1) making one with hard material is placed on horizontal with the framework of mold base consistent size;
(2) the die sinking mud that is 15-25mm by thickness is laid in framework, will scribble 1/2 the imbedding in die sinking mud of the spiral crystal selector wax-pattern thickness with running channel of releasing agent, and some locating holes are stayed in optional position on die sinking mud;
(3) material of the lower die of cast formation, moves under vacuum and solidifies, and after solidifying, takes die sinking mud away, on the lower die taking out, scratches a movable opening at obstruction wax-pattern, and wax-pattern can freely be taken out;
(4) wax-pattern is put into lower die by original position again, coating release agent, again pour the material that forms upper cores into stereoplasm frame, move into vacuum solidification, take out lower die, in the upper cores that hinders wax-pattern taking-up, scratch an opening, the die up and down obtaining is embedded in upper and lower mold base, can complete the making of mould.
CN201410308661.0A 2014-07-02 2014-07-02 A kind of mould for spiral crystal selector and manufacture method thereof Active CN104070138B (en)

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Application Number Priority Date Filing Date Title
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CN104070138B CN104070138B (en) 2016-08-24

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105290333A (en) * 2015-12-02 2016-02-03 株洲中航动力精密铸造有限公司 Bottom pouring type pouring system
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
CN105414482A (en) * 2015-11-11 2016-03-23 沈阳黎明航空发动机(集团)有限责任公司 High-strength ceramic initial segment and manufacturing method thereof

Citations (6)

* Cited by examiner, † Cited by third party
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
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105414482A (en) * 2015-11-11 2016-03-23 沈阳黎明航空发动机(集团)有限责任公司 High-strength ceramic initial segment and manufacturing method thereof
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
CN105290333A (en) * 2015-12-02 2016-02-03 株洲中航动力精密铸造有限公司 Bottom pouring type pouring system
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

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