CN100482380C - Technique for casting turbine blade - Google Patents
Technique for casting turbine blade Download PDFInfo
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- CN100482380C CN100482380C CNB2007100718727A CN200710071872A CN100482380C CN 100482380 C CN100482380 C CN 100482380C CN B2007100718727 A CNB2007100718727 A CN B2007100718727A CN 200710071872 A CN200710071872 A CN 200710071872A CN 100482380 C CN100482380 C CN 100482380C
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Abstract
The invention relates to a method for casting blades of hydraulic turbine, which uses 50t crane, with controllable lifted weight. The invention can reduce the device demand of blade production, with low cost, simple operation and small sand box. With said invention, the casting industry with 50t crane can produce the blades of all hydraulic turbines.
Description
Technical field: the present invention relates to a kind of technique for casting turbine blade.
Background technology: traditional turbine blade technique known casting technique is divided into by apperance: the die model apperance is a cement mo(u)ld, the form of the foetus die model full pattern, the whole full pattern of die model.Be divided into by casting method: the flat cast of crouching of the flat moulding of crouching, the flat moulding pouring in vertically clamped moulds of crouching utilizes that the semi-mechanization platform is upright to hit upright casting, and above-mentioned formative method disadvantage is high to equipment, frock Capability Requirement.Flat characteristics of hitting upright casting need very big crane gear for operating complexity, and mould turnover and lifting are frequent, sandbox rigidity requirement height.Stand and hit the complicated operation of upright casting, do not need very big crane gear, do not need mould turnover, moulding is convenient, but needs a whole set of melt pit equipment of complexity.As adopt the flat moulding pouring in vertically clamped moulds of crouching of traditional handicraft, and required sandbox frock weight is 75 tons, 66.6 tons of sand mold weight, and 141.6 tons of gross weights, the lifting capacity of crane are 150 tons; As utilize that the semi-mechanization platform is upright to be hit upright casting and need a whole set of complicated melt pit equipment.
Summary of the invention: the purpose of this invention is to provide and a kind ofly can significantly shorten the production cycle, reduce the technique for casting turbine blade that Large-Scale Equipment is relied on.The objective of the invention is to be achieved through the following technical solutions: the present invention is for a kind of technique for casting turbine blade, and 1: the 50 tons of cranes of blade integral natural pattern use that post glass fiber reinforced plastic surface are stood up in sandbox and be fixed up; 2: blade outlet is stayed the twice down gate with the runner brick pendulum bottom filling mouth of a river at vacuum side of blade; 3: at the vacuum side of blade system 1000mm high sand mold of pounding earlier, and the whole blade sand mold back side full molding sand of pounding, at the blade crown, the collar extension place stays the front and opens the limit face down; 4: put in the face of blade relevant position on the vacuum side of blade sand mold basis that makes of pounding and to have cast in advance good arbor, the system of pounding then casting mold ground floor core, ramming successively; 5: pound behind the system casting mold second layer core with quadrat method, vanes fixed is removed, and successively equal altitudes is pounded the system sand mold to leaf model rising head upper surface; 6: the sand mold that makes successively pounding successively hangs away with 50 tons of cranes again, moves on to the outer back of case the demoulding of blade apperance is removed; 7: repair of mold and core surface, brush alcohol zircon flour coating twice; 8: the time order group mould assembling of going back successively again by moulding the sand mold that meets technological requirement; 9: after mould assembling finishes, put press case iron after, wait to be cast; 10: cast; 11: peeling; 12: the cutting dead head, remove overlap, burr; 13: heat treatment; 14: bead.
Description of drawings:
Fig. 1 is a casting mold sectional arrangement drawing of the present invention
Fig. 2 is the blade profile dimensional sketch
The specific embodiment:
The present invention is a kind of technique for casting turbine blade: 1: use the blade integral natural pattern that posts glass fiber reinforced plastic surface 50 tons of cranes in sandbox, to stand up and be fixed up; 2: blade outlet is stayed the twice down gate with the runner brick pendulum bottom filling mouth of a river at vacuum side of blade; 3: at the vacuum side of blade system 1000mm high sand mold of pounding earlier, and the whole blade sand mold back side full molding sand of pounding, at the blade crown, the collar extension place stays the front and opens the limit face down; 4: put in the face of blade relevant position on the vacuum side of blade sand mold basis that makes of pounding and to have cast in advance good arbor, the system of pounding then casting mold ground floor core 1, ramming successively; 5: pound behind the system casting mold second layer core 2 with quadrat method, vanes fixed is removed, and successively equal altitudes is pounded the system sand mold to leaf model rising head upper surface; 6: the sand mold that makes successively pounding successively hangs away with 50 tons of cranes again, moves on to the outer back of case the demoulding of blade apperance is removed; 7: repair of mold and core surface, brush alcohol zircon flour coating twice; 8: the time order group mould assembling of going back successively again by moulding the sand mold that meets technological requirement; 9: after mould assembling finishes, put press case iron after, wait to be cast; 10: cast; 11: peeling; 12: the cutting dead head, remove overlap, burr; 13: heat treatment; 14: bead: utilize the impeller of rotation at a high speed that little shot is thrown out the high-speed impact piece surface, so the oxide layer that can remove piece surface, while shot high-speed impact piece surface, cause the lattice torsional deformation of piece surface, case hardness is increased, and is a kind of method that piece surface is cleared up.If this real embodiment wherein step 1 adopts traditional handicraft to need to prepare close-over before this operation, shorten two days production cycles.Step 4 is ramming successively, and sand mold easily hardens, and is easy and simple to handle, shortens the production cycle.The traditional handicraft of the identical blade of step 6 needs crane more than 150 tons, and the present invention adopts 50 tons of cranes, because cored-up mould of the present invention, hoisting weight can be controlled, so both can with 50 tons of cranes.
As shown in Figure 1, use the present invention and successively the vacuum side of blade sand mold is pounded extremely, and pound in the face of blade relevant position and to make sand mold to the blade end face, the back side is motionless then, moves core, and is the demoulding of blade apperance, to be cast behind the mould assembling core assembly etc. again.
In the present embodiment, casting mold is made of four casting cores, wherein casting mold ground floor core 1, casting mold second layer core 2, casting mold the 3rd stratotype core 3, casting mold the 4th stratotype core 4 all adopt cast steel arbor and ester petrifying water hyaline-quartz sand rammer to make sand mold, the following ring of blade body 8 is opened limit face 5, have runner gate 12 in the ingate 6, top is rising head 7, and rising head 7 connects rising head and increases meat 10, the crown of blade body 8 is opened limit face 11, and fuse line of demarcation 9 is located at rising head and increases 10 sections of meat.The shaping finished product that the present invention produces as shown in Figure 2.
Claims (2)
1, a kind of technique for casting turbine blade is characterized in that: 1: use the blade integral natural pattern that posts glass fiber reinforced plastic surface 50 tons of cranes to stand up in sandbox and be fixed up; 2: blade outlet is stayed the twice down gate with the runner brick pendulum bottom filling mouth of a river at vacuum side of blade; 3: at the vacuum side of blade system 1000mm high sand mold of pounding earlier, and the whole blade sand mold back side full molding sand of pounding, at the blade crown, the collar extension place stays the front and opens the limit face down; 4: put in the face of blade relevant position on the vacuum side of blade sand mold basis that makes of pounding and to have cast in advance good arbor, the system of pounding then casting mold ground floor core (1), successively ramming; 5: after the quadrat method system of pounding casting mold second layer core (2), vanes fixed is removed, and successively equal altitudes is pounded the system sand mold to leaf model rising head upper surface; 6: the sand mold that makes successively pounding successively hangs away with 50 tons of cranes again, moves on to the outer back of case the demoulding of blade apperance is removed; 7: repair of mold and core surface, brush alcohol zircon flour coating twice; 8: the time order group mould assembling of going back successively again by moulding the sand mold that meets technological requirement; 9: after mould assembling finishes, put press case iron after, wait to be cast; 10: cast; 11: peeling; 12: the cutting dead head, remove overlap, burr; 13: heat treatment; 14: bead.
2, the casting mold that a kind of technique for casting turbine blade according to claim 1 adopted, it is characterized in that: casting mold is made of four casting cores, casting mold ground floor core (1) wherein, casting mold second layer core (2), casting mold the 3rd stratotype core (3), casting mold the 4th stratotype core (4) all adopts cast steel arbor and ester petrifying water hyaline-quartz sand rammer to make sand mold, the following ring of blade body (8) is opened limit face (5), have runner gate (12) in the ingate (6), top is rising head (7), rising head (7) connects rising head and increases meat (10), the crown of blade body (8) is opened limit face (11), and fuse line of demarcation (9) are located at rising head and increase meat (10) section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100718727A CN100482380C (en) | 2007-03-12 | 2007-03-12 | Technique for casting turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100718727A CN100482380C (en) | 2007-03-12 | 2007-03-12 | Technique for casting turbine blade |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101015851A CN101015851A (en) | 2007-08-15 |
| CN100482380C true CN100482380C (en) | 2009-04-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100718727A Expired - Fee Related CN100482380C (en) | 2007-03-12 | 2007-03-12 | Technique for casting turbine blade |
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| CN (1) | CN100482380C (en) |
Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101745604B (en) * | 2008-12-10 | 2011-11-16 | 沈阳黎明航空发动机(集团)有限责任公司 | Technical method for removing burnt-on sand in groove of ceramic core |
| CN101708530B (en) * | 2009-11-25 | 2012-01-11 | 大连船用推进器有限公司 | Overlying and molding method |
| CN101716653B (en) * | 2009-12-09 | 2011-10-19 | 宁夏共享铸钢有限公司 | Anti-deformation method for casting vane of ultra-large mixed flow type water turbine |
| CN101817062B (en) * | 2010-05-07 | 2011-11-23 | 辽宁福鞍重工股份有限公司 | Forming method for producing hydroelectric blades without sand box and core box |
| CN102266910A (en) * | 2010-06-01 | 2011-12-07 | 鞍钢重型机械有限责任公司 | Casting technology of rolling ring |
| CN101920312B (en) * | 2010-08-21 | 2012-03-21 | 宜昌船舶柴油机有限公司 | Casting method and leveling tool for large multi-blade casting |
| CN102371343A (en) * | 2011-11-01 | 2012-03-14 | 常州轻工职业技术学院 | Impeller casting cement core and manufacture process |
| CN103008564B (en) * | 2012-12-17 | 2014-09-17 | 南京中船绿洲机器有限公司 | Casting method for static vanes of rotating vane-type steering engine |
| CN103418776B (en) * | 2013-09-03 | 2015-09-02 | 宁夏共享集团有限责任公司 | A kind of method of large-scale steel-casting pressure case, shake out |
| CN103949584B (en) * | 2014-04-28 | 2015-12-30 | 上海宏钢电站设备铸锻有限公司 | The sand mould casting method of the 22nd grade of stator blade is pressed in H level combination circulation steam turbine |
| CN106607559B (en) * | 2015-10-23 | 2018-09-18 | 共享铸钢有限公司 | The sand mold formative method of turbine blade |
| CN106001338B (en) * | 2016-06-07 | 2018-07-13 | 中国南方航空工业(集团)有限公司 | High temperature alloy no-residual length leaf milling method |
| CN109290524A (en) * | 2018-03-23 | 2019-02-01 | 上海宏钢电站设备铸锻有限公司 | A kind of subcritical stator blade casting technique of 300MW |
| CN108707733B (en) * | 2018-05-29 | 2019-11-19 | 辽宁福鞍重工股份有限公司 | A kind of process shortening the large-scale steel-casting production cycle |
| CN111545713B (en) * | 2020-05-29 | 2021-12-21 | 共享铸钢有限公司 | Casting method of axial flow water turbine blade |
| CN112846079B (en) * | 2021-01-05 | 2022-11-18 | 中国第一重型机械股份公司 | Modeling control method for large water turbine blade sand mold |
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2007
- 2007-03-12 CN CNB2007100718727A patent/CN100482380C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
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| 串铸立浇生产小型水轮机叶片. 刘宝臣.铸造，第1995卷第11期. 1995 |
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| Publication number | Publication date |
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| CN101015851A (en) | 2007-08-15 |
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Granted publication date: 20090429 Termination date: 20170312 |