CN113814355B - Supporting system with exhaust and blocking and mixing functions - Google Patents
Supporting system with exhaust and blocking and mixing functions Download PDFInfo
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- CN113814355B CN113814355B CN202111213363.XA CN202111213363A CN113814355B CN 113814355 B CN113814355 B CN 113814355B CN 202111213363 A CN202111213363 A CN 202111213363A CN 113814355 B CN113814355 B CN 113814355B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/082—Sprues, pouring cups
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- 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
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Abstract
The invention relates to the field of high-temperature alloy investment casting, in particular to a supporting system with exhaust and impurity blocking functions. The utility model is characterized in that includes sprue, 2 platelike runners, pouring cup lower part, ceramic pouring cup, 2 support columns, 2 locating pieces and 2 exhaust, keep off and mix with the passageway: one end of the lower part of the sprue cup is attached to the straight pouring gate, and the other end of the lower part of the sprue cup is attached to the ceramic sprue cup; the plate-shaped cross runners are symmetrically arranged on the upper side and the lower side of the sprue; the positioning blocks are symmetrically stuck on the ceramic pouring cup; a support column is arranged between the platy transverse pouring gate and the positioning block; the exhaust and blocking inclusion channels are symmetrically adhered to the ceramic pouring cup, and one end of each exhaust and blocking inclusion channel is connected with the positioning block. The invention can effectively eliminate the defects of convection, cold shut and inclusion of the casting, thereby improving the precision casting qualification rate and the metallurgical quality of the casting, saving the production cost, improving the production efficiency, having wide application prospect and obvious protection effect.
Description
Technical Field
The invention relates to the field of high-temperature alloy investment casting, in particular to a supporting system with exhaust and impurity blocking functions.
Background
The strengthening rib of the casting is more, the length of the casting is about 580mm, the width of the casting is about 120mm, the wall thickness of a bottom plate is (0.8-1.2) mm, and the length-thickness ratio is up to 600:1, and two complex thin-wall bearing main ribs are symmetrically distributed on the casting. The K424 and JG4246A high-temperature alloy has large liquid viscosity and poor mold filling performance, and if a casting pouring system is unreasonable in design and the flow field is disordered during alloy pouring, large complex thin-wall parts poured by the alloy are often scrapped due to convection and cold shut defects. In order to improve the mold filling performance of the alloy, a pouring worker needs to finish pouring quickly within 2-3 seconds, and the scouring force of the high-temperature alloy liquid on the surface of the high-temperature pouring cup is very large. If the high-temperature performance and the inner surface quality of the sprue cup are poor, impurities can fall off from the inner surface of a sprue cup shell due to scouring force generated during alloy pouring, and the impurities flow into the shell along with alloy liquid, so that a casting is scrapped due to impurity defects. In order to improve the high-temperature performance and the surface quality of the pouring cup, the upper part of the pouring cup is a ceramic pouring cup which is sintered in advance, the lower part of the pouring cup is a wax piece, then the wax piece is bonded on the ceramic pouring gate, and finally shell preparation and sintering are carried out, so that the existing pouring cup is replaced by the method. If the supporting system is not designed reasonably, the bonding part of the wax piece and the ceramic pouring cup is broken frequently during shell preparation, so that shell preparation fails.
Disclosure of Invention
In order to solve the above problem, reduction in production cost shortens product production cycle, this application provides a by-pass exhaust and keep off braced system who mixes with the function.
The technical scheme of the invention is as follows:
the utility model provides a subsidiary exhaust and keep off braced system that mixes with function, includes sprue, 2 platelike runners, pouring basin lower part, ceramic pouring basin, 2 support columns, 2 locating pieces and 2 exhaust, keep off and mix with the passageway: one end of the lower part of the sprue cup is attached to the straight pouring gate, and the other end of the lower part of the sprue cup is attached to the ceramic sprue cup; the plate-shaped cross runners are symmetrically arranged on the upper side and the lower side of the sprue; the positioning blocks are symmetrically stuck on the ceramic pouring cup; a support column is arranged between the plate-shaped cross gate and the positioning block; the exhaust and blocking inclusion channels are symmetrically adhered to the ceramic pouring cup, and one end of each exhaust and blocking inclusion channel is connected with the positioning block.
Above-mentioned braced system of subsidiary exhaust and fender inclusion function, its preferred scheme does, the sprue shape is cylinder or cuboid: when the shape is a cylinder, the specific size is
The leftmost end of the round bar is rounded R5-R15; when the shape is a cuboid, the specific size is (25-55) mmX (25-55) mm, four long edge fillets R (1-2) and the leftmost end fillets R5-R10; the material is middle temperature filling wax or low temperature wax for investment casting.
According to the preferable scheme of the supporting system with the functions of exhausting and blocking impurities, the plate-shaped cross pouring channel is a cuboid and is symmetrically arranged on the upper side and the lower side of the straight pouring channel, the symmetrical plane of the plate-shaped cross pouring channel is a symmetrical plane M, and the symmetrical center of the plate-shaped cross pouring channel is superposed with the symmetrical plane N; the length C1 is 50-85 mm, the width C2 is 20-35 mm, and the height C3 is 10-20 mm; the distance C4 between the plate-shaped cross pouring channel and the rightmost end of the straight pouring channel is (35-45) mm; and the peripheral fillets R3-R8 at the intersection of the platy transverse pouring gate and the straight pouring gate and the peripheral edge fillets R1-R3 of the platy transverse pouring gate are made of medium-temperature filling wax or low-temperature wax for investment casting.
According to the supporting system with the functions of exhausting and blocking impurities, the preferable scheme is that the lower part of the sprue cup is provided with a circular truncated cone + a coaxial cylinder which is coaxial with a straight pouring gate; the minor diameter C5 of the round platform at the lower part of the sprue cup is
The high C6 is (45-62) mm, and the half angle is beta 1 Is (18-22) °; the diameter C7 of the cylinder at the lower part of the pouring cup is
The height C6 is (5-7) mm; the surface of the small diameter at the lower part of the sprue cup is attached to the rightmost end of the sprue, and the sprue cup is made of medium-temperature filling wax or low-temperature wax for investment casting.
In the above supporting system with the functions of exhausting and blocking impurities, the preferable scheme is that the ceramic pouring cup is designed into a hollow round table shape and is coaxial with the lower parts of the sprue and the pouring cup; the minor diameter C9 of the circular truncated cone is
High C10 of 115-155 mm and half angle beta 2 Is (18-22) °; the size of each part of the hollow special-shaped revolving body is as follows: c11 is
C12 is (5-7) mm, C13 is (75-115) mm, half angle beta 3 Is (20-24) ° and half angle beta 3 Is (20-24) ° and half angle beta 4 Is (7-12) degree; the rest partsThe small diameter end face of the round table of the ceramic pouring cup with the radius angle R (0.5-1) is attached to the end face of the large round table at the lower part of the pouring cup and is bonded by bonding wax, and the ceramic pouring cup is made of SiO 2 Base, al 2 O 3 Based, mgO based, zrO based and YO based ceramic materials are sintered and formed in advance for standby.
In the above supporting system with functions of exhausting and blocking impurities, preferably, the supporting column is a cylinder with a diameter of
The length is (100-160) mm, the length is determined according to the actual position of a field object, and the material is medium-temperature filling wax or low-temperature wax for investment casting.
In the above supporting system with functions of exhausting and blocking impurities, the preferred scheme is that the positioning block is a cuboid body trimmed by two conical surfaces, the first conical surface is a round table surface outside the ceramic pouring cup, the second conical surface is an offset surface of the round table surface outside the ceramic pouring cup, and the distance between the offset surfaces is the thickness of the positioning block; the size of the cross section of the positioning block is as follows: the length C14 of the cuboid is (20-38) mm, the width C15 is (15-25) mm, and the thickness of the positioning block is (5-12) mm; a rounding angle R (0.8-1.5) at the rounding angle part of the positioning block; the positioning block is adhered to the ceramic pouring cup through adhesive wax, the distance C16 between the positioning block and the small-diameter end face of the ceramic pouring cup is (12-20) mm, and white paraffin is brushed on the periphery of the adhering part of the positioning block and the ceramic pouring cup; the positioning block is made of medium-temperature filling wax or low-temperature wax for investment casting.
The above-mentioned braced system that accompanies exhaust and fender and mix function, its preferred scheme be, the shape that exhaust, fender mix with the passageway is the entity after two circular conical surfaces of uniform cross section dysmorphism integument pruned, and first circular conical surface is the outside round platform face of ceramic pouring basin, and second circular conical surface is the off-set plane of the outside round platform face of ceramic pouring basin, and the distance of off-set plane is the thickness that exhaust, fender mix with the passageway cross section promptly, and the size that exhaust, fender mix with the passageway cross section is: c17 is (13-40) mm, C18 is (50-70) mm, C19 is (15-30) mm, C20 is (12-20) mm, C21 is(20-25) mm, C22 is (30-45), C23 is (8-20) mm, C24 is (5-12) mm, C25 is (4-6) mm, C26 is half of C25, alpha 1 Is (42-48) °, alpha 2 The material is (7-12) °, a part A is rounded R (12-20), a part B is rounded R (1-3), a part C is rounded R (0.5-3), a part D is rounded R (0.6-1), the thickness of the special-shaped body is (2.5-5) mm, the rounded R (0.6-1.5) of the rounded corner part at the periphery of the exhaust and blocking inclusion channel is brushed with paraffin wax at the periphery of the joint part of the exhaust and blocking inclusion channel and the ceramic pouring cup, and the material of the exhaust and blocking inclusion channel is medium-temperature filling wax or low-temperature wax for investment casting.
In the above-described support system with the functions of exhausting and blocking inclusions, it is preferable that the sprue, the plate-shaped runner, and the lower portion of the pouring cup are integrally press-formed.
In the above supporting system with the exhaust and impurity blocking functions, the preferable scheme is that the highest scale position during the preparation of the shell is at a distance C27 of (3-5) mm from the top end of the exhaust and impurity blocking channel.
The invention has the beneficial effects that:
(1) In the shell preparation process, the plate-shaped cross gate, the support columns and the positioning blocks can play a supporting role, so that the fracture of the bonding part of the lower part of the pouring cup and the ceramic pouring cup and the fracture of the section mutation part of the lower part of the pouring cup and the sprue can be prevented;
(2) After the shell is prepared, when dewaxing is carried out, the exhaust and blocking inclusion channels can also be used as wax discharge ports;
(3) After the shell is sintered, in the process of transporting and boxing the shell, the complex circuitous structure of the exhaust and inclusion blocking channel can effectively block foreign impurities;
(4) High-temperature metal liquid enters the lower part of the pouring cup from the ceramic pouring cup and then enters the sprue; then high-temperature metal liquid flows into a riser and an inner riser of the casting from a sprue and is filled in the whole casting, and finally flows into a platy cross runner and is filled with a support column, a positioning block and an exhaust and blocking inclusion channel; in the pouring process, the supporting columns, the positioning blocks and the exhaust and blocking inclusion channels can play a role in exhausting.
(5) The invention can be applied to large-scale thin-walled parts with similar structure of the tail nozzle of an aircraft engine, which are produced by high-temperature alloy investment casting such as K424, JG4246A and the like, and can effectively eliminate the defects of convection, cold shut and inclusion of the casting, thereby improving the precision casting qualification rate and the metallurgical quality of the casting, saving the production cost, improving the production efficiency, having wide application prospect and obvious protection effect.
Drawings
FIG. 1 is a three-dimensional schematic view of a support system with venting and containment functions;
FIG. 2 is a schematic plan view of a support system with venting and inclusion blocking features;
FIG. 3 is a schematic view showing the relative position relationship between a plate-shaped runner and a sprue;
FIG. 4 is a two-dimensional schematic view of the lower portion of the pouring cup;
FIG. 5 is a two-dimensional schematic view of a ceramic tundish;
FIG. 6 is a two-dimensional schematic view of a positioning block;
FIG. 7 is a schematic view of a corner rounding portion and a white wax brushing portion of a positioning block;
FIG. 8 is a two-dimensional schematic view of the exhaust and trap channel;
FIG. 9 is a schematic view of the peripheral fillets of the exhaust and inclusion blocking passages and the white paraffin brushing part;
fig. 10 is a schematic view of the highest scale position during shell preparation.
Wherein, 1-a straight pouring channel; 2-a plate-shaped horizontal pouring channel; 3-the lower part of the sprue cup; 4-a ceramic pouring cup; 5-a support column; 6-positioning blocks; 61-rounding corner parts of the positioning blocks; 62-the joint part of the positioning block and the ceramic pouring cup; 7-exhausting and blocking inclusion channels; 71-rounding off the periphery of the exhaust and blocking inclusion channel; 72-exhausting and blocking the joint part of the inclusion channel and the ceramic pouring cup; 8-casting.
Detailed Description
As shown in fig. 1, a supporting system with exhausting and impurity blocking functions comprises a sprue 1, 2 plate-shaped runners 2, a pouring cup lower part 3, a ceramic pouring cup 4, 2 supporting columns 5, 2 positioning blocks 6 and 2 exhausting and impurity blocking channels 7: one end of the lower part 3 of the pouring cup is attached to the straight pouring gate 1, and the other end of the lower part is attached to the ceramic pouring cup 4; the plate-shaped cross runners 2 are symmetrically arranged on the upper side and the lower side of the sprue 1; the positioning blocks 6 are symmetrically stuck on the ceramic pouring cup 4; a support column 5 is arranged between the plate-shaped cross gate 2 and the positioning block 6; the exhaust and blocking inclusion channels 7 are symmetrically adhered to the ceramic pouring cup 4, and one end of each exhaust and blocking inclusion channel is connected with the positioning block 6.
The following embodiments will be described with reference to FIGS. 1 to 10.
Example 1:
step 1, analyzing the size of a typical casting 8: the contour dimension of the complex thin-wall high-temperature alloy casting is 485mm multiplied by 105mm, the casting has more reinforcing ribs, the wall thickness of the bottom plate is (0.8-1) mm, and the length-thickness ratio is as high as 520:1, the included angle of the tail part of the casting is 180 degrees, and the middle part of the casting is symmetrical with two complex thin-wall force-bearing main ribs.
Step 4, preparing a sprue cup lower part 3: as shown in fig. 4, the lower part 3 of the pouring cup is shaped as a "truncated cone" + a coaxial "cylinder" and is coaxial with the sprue 1, i.e. the axis P; the minor diameter C5 of the circular truncated cone at the lower part 3 of the pouring cup is
A high C6 of 56mm and a half angle beta 1 19.5 °; the diameter C7 of the cylinder of the lower part 3 of the pouring cup is
The height C6 is 6mm; as shown in figure 1, the face of the lower part 3 of the pouring cup with the smaller diameter is attached to the rightmost end of the sprue 1, and the material is medium temperature filling wax for investment casting, and the mark is F28-44B.
And 9, when the wax mould is manufactured, the sprue 1, the platy runner 2 and the lower part 3 of the sprue cup are integrally pressed and formed, so that the strength and the supporting effect of the whole wax piece are improved.
Step 10, designing a metal mold for the ceramic pouring cup 4, and pressing Al 2 O 3 Sintering and strengthening the base ceramic biscuit for later use; integrally designing metal molds for the straight pouring channel 1, the plate-shaped cross pouring channel 2 and the pouring cup lower part 3, and pressing wax molds for later use; and respectively designing metal molds for the supporting column 5, the positioning block 6, the exhaust and impurity blocking channel 7, and pressing the wax mold for later use.
And 11, pressing the specific casting wax mold and riser wax mold for later use.
Step 12, firstly, sticking the ceramic pouring cup 4 to the lower part 3 of the pouring cup by using bonding wax, sticking the positioning block 6 to the ceramic pouring cup 4 by using the bonding wax according to a specific position relation, then sticking the support pillar 5 to the platy cross gate 2 and the positioning block 6 by using the bonding wax, finally sticking the exhaust and inclusion blocking channel 7 to the ceramic pouring cup 4 and the positioning block 6 by using the bonding wax according to a specific position relation, and finally brushing white paraffin on a local welding line.
Step 13, the riser wax molds are glued to the specific casting waxes, and they are glued to the sprue 1 in step 12 according to the specific dimensions and relative positions.
And 14, deoiling the module.
Step 15, when the shell is prepared, the distance C27 of the highest scale position of the coating is 3mm as shown in FIG. 10.
And step 16, after the shell coating is finished, drying, dewaxing and roasting to obtain the high-quality shell.
Example 2:
the difference from the embodiment 1 is that in the step 2, the sprue 1 is in a cuboid shape, the specific size of the sprue is 30mm × 30mm, four long-edge rounded corners R1 are formed, and the leftmost end of the sprue is rounded corner R7; the material is wax filling with medium temperature for investment casting, and the mark is F28-44B.
Claims (7)
1. The utility model provides a by-pass exhaust and keep off braced system who mingles function, its characterized in that, include sprue, 2 platelike cross runners, pouring basin lower part, ceramic pouring basin, 2 support columns, 2 locating pieces and 2 exhaust, keep off and mix with the passageway: one end of the lower part of the sprue cup is attached to the straight pouring gate, and the other end of the lower part of the sprue cup is attached to the ceramic sprue cup; the plate-shaped cross runners are symmetrically arranged on the upper side and the lower side of the sprue; the positioning blocks are symmetrically stuck on the ceramic pouring cup; a support column is arranged between the platy transverse pouring gate and the positioning block; the exhaust and blocking inclusion channels are symmetrically adhered to the ceramic pouring cup, and one end of each exhaust and blocking inclusion channel is connected with the positioning block;
the shape of the ceramic pouring cup is designed into a hollow round table", and is coaxial with the lower part of the sprue and the pouring cup, as shown in figure 5, the small diameter C9 of the circular truncated cone is phi 65mm to 90mm, the height C10 is 115mm to 155mm, and the half angle beta is 2 18 to 22 degrees; the size of each part of the hollow special-shaped revolving body is as follows: c11 is phi 48mm to 60mm, C12 is 5mm to 7mm, C13 is 75 mm to 115mm, and the half angle is beta 3 20 to 24 degrees and a half angle beta 4 Is 7 to 12 degrees; the other parts are rounded R0.5-R1, the end face of the small diameter of the circular truncated cone of the ceramic pouring cup is attached to the end face of the large circular truncated cone at the lower part of the pouring cup and is bonded by bonding wax, and the ceramic pouring cup is made of SiO 2 Base, al 2 O 3 Pre-sintering and molding the ceramic materials of the base, the MgO base, the ZrO base and the YO base for later use;
the positioning block is a cuboid solid trimmed by two conical surfaces, the first conical surface is a round table surface outside the ceramic pouring cup, the second conical surface is an offset surface of the round table surface outside the ceramic pouring cup, and the distance between the offset surfaces is the thickness of the positioning block; the size of the cross section of the positioning block is as follows: the length C14 of the cuboid is 20 mm-38 mm, the width C15 of the cuboid is 15 mm-25 mm, and the thickness of the positioning block is 5 mm-12 mm; a fillet R0.8-R1.5 at the fillet part of the positioning block; the positioning block is adhered to the ceramic pouring cup through adhesive wax, the distance C16 between the positioning block and the small-diameter end face of the ceramic pouring cup ranges from 12mm to 20mm, and white paraffin is brushed on the periphery of the adhering part of the positioning block and the ceramic pouring cup; the positioning block is made of medium-temperature filling wax or low-temperature wax for investment casting;
the shape of the exhaust and blocking inclusion channel is an entity formed by trimming two conical surfaces of an irregular body with an equal section, the first conical surface is a round table surface outside the ceramic pouring cup, the second conical surface is an offset surface of the round table surface outside the ceramic pouring cup, the distance of the offset surface is the thickness of the section of the exhaust and blocking inclusion channel, and the size of the section of the exhaust and blocking inclusion channel is as shown in the attached figure 8: c17 is 13 mm to 40mm, C18 is 50mm to 70mm, C19 is 15mm to 30mm, C20 is 12mm to 20mm, C21 is 20mm to 25mm, C22 is 30mm to 45mm, C23 is 8mm to 20mm, C24 is 5mm to 12mm, C25 is 4mm to 6mm, C26 is half of C25, alpha is 1 Is 42 to 48 degrees and alpha 2 Is 7 to 12 degrees, fillets R12 to R20 at A, fillets R1 to R3 at B, fillets R0.5 to R3 at C and fillets DFillet R0.6~ R1, the dysmorphism thickness is 2.5mm ~5mm, exhaust, keep off the fillet R0.6~ R1.5 that mix with the peripheral radius angle position of passageway, exhaust, keep off and mix with passageway and ceramic pouring basin laminating position peripheral brush white paraffin, exhaust, keep off the material that mixes with the passageway and be wax or low temperature wax with middle temperature filling for the investment casting.
2. The supporting system with the function of exhausting and blocking impurities as claimed in claim 1, wherein the sprue is in the shape of a cylinder or a cuboid: when the shape is a cylinder, the specific size is phi 25 mm-55 mm multiplied by 450 mm-600 mm, and the leftmost end of the cylinder is rounded R5-R15; when the shape is a cuboid, the specific size is 25 mm-55 mm multiplied by 25 mm-55 mm, four long edge fillets R1-R2 are provided, and the leftmost end fillet R5-R10 is provided; the material is medium-temperature filling wax or low-temperature wax for investment casting.
3. The supporting system with the functions of exhausting and blocking the inclusion according to claim 1, wherein the plate-shaped cross runner is a cuboid and is symmetrically arranged at the upper side and the lower side of the straight runner, as shown in the attached fig. 2 and 3: the symmetry plane is a symmetry plane M, and the symmetry center of the symmetry plane M coincides with the symmetry plane N; the length C1 is 50 mm-85 mm, the width C2 is 20 mm-35 mm, and the height C3 is 10 mm-20 mm; the distance C4 between the plate-shaped cross pouring gate and the rightmost end of the straight pouring gate is 35 mm-45 mm; the periphery of the intersection of the platy transverse pouring channel and the straight pouring channel is rounded R3-R8, the periphery of the platy transverse pouring channel is rounded R1-R3, and the platy transverse pouring channel is made of medium-temperature filling wax or low-temperature wax for investment casting.
4. The support system with the functions of exhausting and blocking impurities as claimed in claim 1, wherein the lower part of the pouring cup is shaped as a "truncated cone" + a coaxial "cylinder" and is coaxial with the sprue; as shown in figure 4 of the accompanying drawings: the small diameter C5 of the circular truncated cone at the lower part of the sprue cup is phi 25 mm-55 mm, the height C6 is 45 mm-62 mm, and the half angle beta is 1 18 to 22 °; the diameter C7 of a cylinder at the lower part of the sprue cup is phi 48 mm-60 mm, and the height C6 is 5 mm-7 mm; the small-diameter surface of the lower part of the sprue cup is attached to the rightmost end of the sprue and made of materialFilling wax or low-temperature wax at medium temperature for investment casting.
5. The supporting system with the functions of exhausting and blocking the inclusions as claimed in claim 1, wherein the supporting column is a cylinder with a diameter of 12mm to 21mm and a length of 100mm to 160mm, the length of the supporting column is determined according to the actual position of the on-site object, and the supporting column is made of medium-temperature filling wax or low-temperature wax for investment casting.
6. The support system with the functions of exhausting and blocking impurities as claimed in claim 1, wherein the sprue, the plate-shaped runner and the lower portion of the pouring cup are integrally formed by pressing.
7. The supporting system with the function of exhausting and blocking the inclusion according to claim 1, wherein the distance C27 between the highest scale position and the top end of the exhausting and blocking inclusion channel is 3mm to 5mm when the shell is prepared.
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| CN114749601A (en) * | 2022-05-07 | 2022-07-15 | 东风(十堰)有色铸件有限公司 | Multifunctional sprue cup and processing method thereof |
| CN117161319B (en) * | 2023-10-30 | 2024-01-23 | 中国航发沈阳黎明航空发动机有限责任公司 | Module for solving cracking of investment casting manipulator shell and casting method |
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| JPH08224655A (en) * | 1995-02-22 | 1996-09-03 | Mitsubishi Heavy Ind Ltd | Precision casting method |
| FR2990370B1 (en) * | 2012-05-14 | 2014-05-23 | Snecma | DEVICE FOR HANDLING WAX CLUSTERS |
| CN105170909B (en) * | 2015-10-10 | 2017-11-14 | 贵阳中航动力精密铸造有限公司 | A kind of running gate system for hollow single crystal blade |
| CN208628378U (en) * | 2018-06-25 | 2019-03-22 | 株洲中航动力精密铸造有限公司 | Bottom gating and guider the molding wax tree structure of blade vertical-type guider |
| CN208712779U (en) * | 2018-07-27 | 2019-04-09 | 深圳市科立达机械有限公司 | Model casting group tree construction |
| CN109332594B (en) * | 2018-11-20 | 2021-01-22 | 中国航发沈阳黎明航空发动机有限责任公司 | Connecting method of impurity clamping preventing pouring cup for large casting |
| CN212857645U (en) * | 2020-08-04 | 2021-04-02 | 盐城宝风机械科技有限公司 | Lost foam casting runner |
| CN212945288U (en) * | 2020-08-10 | 2021-04-13 | 深圳市科立达机械有限公司 | Investment casting structure for ice making barrel |
| CN111940679B (en) * | 2020-09-17 | 2021-10-22 | 中国航发沈阳黎明航空发动机有限责任公司 | Design method of double-linkage directional hollow blade gating system |
| CN112548039B (en) * | 2020-11-20 | 2022-03-29 | 中国航发沈阳黎明航空发动机有限责任公司 | Tenon-and-mortise combined casting system and manufacturing method for high-temperature alloy thin-wall part |
| CN113070452A (en) * | 2021-03-04 | 2021-07-06 | 贵阳航发精密铸造有限公司 | Dewaxing structure of seed crystal method seeding module |
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