CN107042285B - A kind of manufacturing method of turbine case runner loam core - Google Patents
A kind of manufacturing method of turbine case runner loam core Download PDFInfo
- Publication number
- CN107042285B CN107042285B CN201611073080.9A CN201611073080A CN107042285B CN 107042285 B CN107042285 B CN 107042285B CN 201611073080 A CN201611073080 A CN 201611073080A CN 107042285 B CN107042285 B CN 107042285B
- Authority
- CN
- China
- Prior art keywords
- runner
- sand
- mould
- mud core
- core mould
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000004576 sand Substances 0.000 claims abstract description 37
- 230000000149 penetrating effect Effects 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims abstract description 6
- 238000011084 recovery Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 8
- 238000005266 casting Methods 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
A kind of manufacturing method of the turbine case runner loam core of casting field, includes the following steps：A, sand block piece and setting positioning pin are hinged in penetrating near sand mouth for the runner mud core mould being made of dynamic model and quiet mould；B, runner mud core mould is placed in coremaking equipment, adjusts the cylinder pressure and reversal rate of coremaking equipment；C, the dynamic model of runner mud core mould and quiet mould temperature are set as 260 DEG C ± 3 DEG C, and shooting time is 4s ± 1s, and hardening time is 220s ± 5s；D, sand block piece is rotated after the completion of penetrating sand, sand block piece is set to be fastened on positioning pin, sand block piece gear is penetrating sand mouth to prevent the sand in switching process in runner mud core mould from pouring out, coremaking equipment makes runner mud core mould carry out 180 ° of ± 2 ° of overturnings in 8s, runner mud core mould carries out position recovery after 120s ± 2s, and runner loam core is taken out from runner mud core mould.The present invention can eliminate runner loam core water inlet locations and be layered, and avoid generating crust inside turbine case runner.
Description
Technical field
The invention belongs to casting field, specifically a kind of manufacturing method of loam core.
Background technology
With the development of turbocharger industry, the flow channel quality of the core part turbine case in turbocharger is also carried
Go out higher requirement, for some small spiral cases, the casting produced using traditional core-making method, runner inside symbol completely
Close quality standard.
For heavy turbine case, i.e. main body wall thickness is more than 8mm, and weight is more than the turbine shell product of 16kg, using traditional
Core manufacturing craft, runner loam core are influenced when curing by gravity factor, can correspond to water inlet by highest point inside turbine case runner
Position generates crust defect.There are when foreign matter inside turbine case runner, the power of turbocharger can be seriously affected, is existed simultaneously
Some safety problems.When using traditional handicraft coremaking, the correspondence water inlet locations of runner loam core will produce serious layering, and
And can not eliminate, under this state, molten iron can face the layered position of impact runner loam core for a long time from water inlet, eventually
Runner loam core is broken through, causes to generate crust inside the runner of turbine case.
Invention content
The purpose of the present invention is to provide a kind of turbine cases for the layering that can eliminate the appearance of runner loam core water inlet locations
The manufacturing method of runner loam core.
In order to achieve the above object, the technical scheme is that：A kind of manufacturing method of turbine case runner loam core, including
Following steps：
A, sand block piece and setting positioning pin are hinged in penetrating near sand mouth for the runner mud core mould being made of dynamic model and quiet mould；
B, runner mud core mould is placed in coremaking equipment, and adjust coremaking equipment cylinder pressure be 0.3 ~
0.5Mpa, reversal rate is 60 °/s ± 5 °/s, so that runner mud core mould can carry out at the appointed time after the completion of penetrating sand
Overturning；
C, the dynamic model of runner mud core mould and quiet mould temperature are set as 260 DEG C ± 3 DEG C, and shooting time is 4s ± 1s, when solidification
Between be 220s ± 5s；
D, after the completion of penetrating sand rotate sand block piece, so that sand block piece is fastened on positioning pin, sand block piece gear penetrate sand mouth to prevent
Only the sand in switching process in runner mud core mould is poured out, and coremaking equipment makes runner mud core mould carry out 180 ° ± 2 ° in 8s to turn over
Turn, runner mud core mould carries out position recovery after 120s ± 2s, and runner loam core is taken out from runner mud core mould.
In Step d, the sand block piece rotates clockwise 90 ° and engages with positioning pin.
After the above method, the present invention makes the layered position of runner loam core be changed by the overturning of coremaking equipment
Become.Layered position is transferred to non-water inlet locations, keeps the core tissue that runner loam core corresponds to water inlet locations dense, in addition
Solidification is good, can eliminate runner loam core water inlet locations and be layered, will not be rushed by washing away for molten iron 8s~15s
It is broken, to avoid generating crust defect inside turbine case runner.
Description of the drawings
The present invention is described in further detail for the embodiment provided below in conjunction with attached drawing.
Fig. 1 is the front view of the runner mud core mould in the present invention；
Fig. 2 is the left view of Fig. 1；
Fig. 3 is the vertical view of Fig. 1；
Fig. 4 is the front view for the runner loam core that the present invention produces；
Fig. 5 is sectional view of the runner loam core before overturning, the i.e. sectional view along the line A-A of Fig. 4；
Fig. 6 is sectional view of the runner loam core after overturning, the i.e. sectional view along the line A-A of Fig. 4.
Specific implementation mode
As shown in Fig. 1,2,3,4,5,6, a kind of manufacturing method of turbine case runner loam core of the invention, including walk as follows
Suddenly：
A, penetrating to be hinged near sand mouth 3 and sand block piece 4 and set in the runner mud core mould 1 being made of dynamic model 1-1 and quiet mould 1-2
Set positioning pin 5；
B, runner mud core mould 1 is placed in coremaking equipment, and adjust coremaking equipment cylinder pressure be 0.3 ~
0.5Mpa, reversal rate be 60 °/s ± 5 °/s so that runner mud core mould 1 after the completion of penetrating sand can at the appointed time into
Row overturning；
C, the dynamic model 1-1 of runner mud core mould 1 and quiet mould 1-2 temperature are set as 260 DEG C ± 3 DEG C, and shooting time is 4s ± 1s,
Hardening time is 220s ± 5s；
D, sand block piece 4 is rotated after the completion of penetrating sand, sand block piece 4 is made to be fastened on positioning pin 5, and the gear of sand block piece 4 is penetrating sand mouth 3
To prevent the sand in switching process in runner mud core mould 1 from pouring out, coremaking equipment makes runner mud core mould 1 carry out 180 ° in 8s
± 2 ° overturn, and runner mud core mould 1 carries out position recovery after 120s ± 2s, and runner loam core 6 is taken out from runner mud core mould 1.
In Step d, the sand block piece 4 rotates clockwise 90 ° and engages with positioning pin 5.
Coremaking equipment in the present invention may be used Wuxi anticipate the production of sincere instrument factory 958 models coremaking equipment.Also may be used
To use other suitable coremaking equipment with turn over function.
As shown in Figure 4,5, 6, after runner mud core mould 1 is overturn, the layered position in runner loam core 6 changes, by
7 positions in Fig. 5 move to 8 positions in Fig. 6 so that the core tissue at 7 positions in runner loam core 6 is comparatively dense, in addition solid
Change well, is not layered.Generation crust inside turbine case runner will not be made to lack even across washing away for molten iron 8s~15s
It falls into, complies fully with quality requirement.
Claims (2)
1. a kind of manufacturing method of turbine case runner loam core, it is characterised in that：Include the following steps：
A, by dynamic model（1-1）With quiet mould（1-2）The runner mud core mould of composition（1）Penetrate Sha Kou（3）Nearby it is hinged sand block piece
（4）With setting positioning pin（5）；
B, by runner mud core mould（1）Be placed in coremaking equipment, and adjust coremaking equipment cylinder pressure be 0.3 ~
0.5Mpa, reversal rate is 60 °/s ± 5 °/s, so that runner mud core mould（1）It can be at the appointed time after the completion of penetrating sand
It is overturn；
C, runner mud core mould（1）Dynamic model（1-1）With quiet mould（1-2）Temperature is set as 260 DEG C ± 3 DEG C, shooting time be 4s ±
1s, hardening time are 220s ± 5s；
D, sand block piece is rotated after the completion of penetrating sand（4）, make sand block piece（4）It is fastened on positioning pin（5）On, sand block piece（4）Gear is being penetrated
Sand mouth（3）To prevent runner mud core mould in switching process（1）In sand pour out, coremaking equipment makes runner mud core mould（1）
It carries out 180 ° ± 2 ° in 8s to overturn, runner mud core mould after 120s ± 2s（1）Position recovery is carried out, from runner mud core mould（1）
Middle taking-up runner loam core（6）.
2. the manufacturing method of turbine case runner loam core according to claim 1, it is characterised in that：It is described in Step d
Sand block piece（4）Rotate clockwise 90 ° and positioning pin（5）Engaging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611073080.9A CN107042285B (en) | 2016-11-29 | 2016-11-29 | A kind of manufacturing method of turbine case runner loam core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611073080.9A CN107042285B (en) | 2016-11-29 | 2016-11-29 | A kind of manufacturing method of turbine case runner loam core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107042285A CN107042285A (en) | 2017-08-15 |
| CN107042285B true CN107042285B (en) | 2018-10-19 |
Family
ID=59543098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611073080.9A Active CN107042285B (en) | 2016-11-29 | 2016-11-29 | A kind of manufacturing method of turbine case runner loam core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107042285B (en) |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1757382B1 (en) * | 2004-05-21 | 2016-04-20 | Kao Corporation | Resin coated sand |
| CN201295736Y (en) * | 2008-11-20 | 2009-08-26 | 天津达祥精密工业有限公司 | Pulling block structure of turbo-housing channel box core |
| CN201295737Y (en) * | 2008-11-20 | 2009-08-26 | 天津达祥精密工业有限公司 | Double-inlet turbo-housing box core structure |
| CN203109172U (en) * | 2013-04-01 | 2013-08-07 | 溧阳市新力机械铸造有限公司 | Improved forming casting die for valve body castings |
| CN203281803U (en) * | 2013-05-10 | 2013-11-13 | 天津达祥精密工业有限公司 | Core box of double-channel entire sand core |
| CN105414488B (en) * | 2015-12-23 | 2017-10-27 | 常州中车汽车零部件有限公司 | A kind of core-making method of turbine case runner core |
-
2016
- 2016-11-29 CN CN201611073080.9A patent/CN107042285B/en active Active
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| Publication number | Publication date |
|---|---|
| CN107042285A (en) | 2017-08-15 |
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Address after: 213011 No. 51 Wuyi Road, Qishuyan, Changzhou, Jiangsu, 258 Patentee after: CRRC CHANGZHOU AUTO PARTS CO.,LTD. Country or region after: China Patentee after: CRRC Qishuyan Locomotive and Rolling Stock Technology Research Institute Co.,Ltd. Address before: 213011 No. 51 Wuyi Road, Qishuyan, Changzhou, Jiangsu, 258 Patentee before: CRRC CHANGZHOU AUTO PARTS CO.,LTD. Country or region before: China Patentee before: CRRC QISHUYAN INSTITUTE Co.,Ltd. |