CN2710798Y - Combination type crystallizer used for electroslag smelting casting guide blade - Google Patents
Combination type crystallizer used for electroslag smelting casting guide blade Download PDFInfo
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- CN2710798Y CN2710798Y CN 200420070032 CN200420070032U CN2710798Y CN 2710798 Y CN2710798 Y CN 2710798Y CN 200420070032 CN200420070032 CN 200420070032 CN 200420070032 U CN200420070032 U CN 200420070032U CN 2710798 Y CN2710798 Y CN 2710798Y
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- crystallizer
- guide blade
- shape
- combination type
- electroslag smelting
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Abstract
The utility model discloses a combination type crystallizer used for electroslag smelting casting guide blade, which is characterized in that the combination type crystallizer used for electroslag smelting casting guide blade is composed of a lower crystallizer and an upper crystallizer. The upper crystallizer is arranged on the lower crystallizer; the shape of the inner cavity of the lower crystallizer is the same with the shape of the short shaft and the lamella body of a guide blade, and the shape of the inner cavity of the upper crystallizer is the same with the shape of the long shaft of the guide blade. The combination type crystallizer used for electroslag smelting casting guide blade has simple structure and convenient use. The utility model used for electroslag smelting casting guide blade can solve the defects of shrinkage holes, looseness, slag inclusion and cracks in sand casting, every casting performance index can reach to the level of forging with the same material, the combination type crystallizer used for electroslag smelting casting guide blade has high metal utilizing rate, simple procedure and short production period, and large-scale guide blades can be produced.
Description
(1) technical field
The utility model relates to a kind of mold and pattern for casting tool, particularly relates to the mould that a kind of electroslag casting guide blade is used.
(2) background technology
At present, in the world for power station hydrogenerator critical component---adopted several different methods in the manufacturing of stator, along with the development of water power cause, the hydraulic turbine is to maximization, high power development, the stator of large-scale water turbine is higher on quality requirement, and manufacture difficulty is bigger.
At the foundry goods (seeing shown in Figure 5) of this shape of stator, some manufacture methods and the pluses and minuses that adopt both at home and abroad are as follows at present:
1, common sand mold monoblock cast be the main method of making stator both at home and abroad, but the stator internal soundness is poor, easily produces defectives such as shrinkage cavity, loose, crackle in the casting process;
2, molded or welded steel plate moulding and axle assembly welding of lobe phantom, this method complex procedures, the production cycle is long, and the scope of application also is restricted;
3, solid forging stator, the stator quality is better, but only is applicable to small guide blade;
HIT once adopted electroslag casting to produce stator (the clear 57-00542 of Japan Patent), the mould of employing, and promptly crystallizer is whole case structure, shaft portion adopts the moulding of stripping method on it, axle is second-rate with lobe body junction, complicated operation, and cost is higher.
(3) summary of the invention
The technical problems to be solved in the utility model, provide a kind of fourplatemold that electroslag casting guide blade is used that is suitable for, in founding stator process, adopt this crystallizer, solved foundry goods moulding problem, casting quality is good, and the every performance indications of foundry goods reach with material forging level, and the using rate of metal height, with short production cycle, can produce large-scale stator.
The technical scheme that adopts is:
The electroslag casting guide blade fourplatemold adopts upper and lower minute body structure, promptly is made up of following crystallizer and last crystallizer, and last crystallizer is folded to be dropped on down on the crystallizer.Adopt forward and backward opposite opened structure for the ease of crystallizer under the demoulding.Following crystallizer internal cavity shape is consistent with the minor axis and the lobe shape of stator, and last crystallizer internal cavity shape is consistent with stator major axis shape.
Mobile crystallizer is installed with a plurality of hangers respectively on upper and lower crystallizer for convenience.
Adopt the electroslag smelting casting method to produce stator, electrode adopts the conformal consutrode; Mould adopts the utility model, i.e. fourplatemold, and the last crystallizer of fourplatemold is copper, following crystallizer is a steel or copper.The electroslag casting guide blade process comprises:
A, smelting-casting equipment adopt two station electroslag furnaces, but and chassis possess two-way regulatory function in the horizontal direction.
B, put on the chassis after will descending crystallizer assembling, the conformal consutrode is installed on the body of heater station of equipment, prepare the minor axis and the lobe body portion of founding stator foundry goods.
C, adopt solid slag starting the arc method igniting, add the solid slag of about 75-85% (total slag charge) immediately, limit slag charge fusing of margin is cast, and Current Control is at≤3000A.After solid slag all melts, improve fusion current and make it to reach 3500A to 18000A (limit is taken off in the foundry goods cross section for a short time, the big capping in foundry goods cross section), carry out normal founding.After entering normal founding, in the crystallizer die cavity, the slag bath central temperature should remain at 1600 ℃ to 1900 ℃.Voltage is got 50V to 100V (limit is taken off in the foundry goods cross section for a short time, the big capping in foundry goods cross section) in the whole fusion-casting process.
If consutrode of D is not enough, can on another body of heater station of equipment, a consutrode be installed again.After first comsumable melt to the greatest extent, chassis is moved to continuation founding under second station, but repeated multiple times is changed consutrode like this, till crystallizer is full of down (this moment, the minor axis and the founding of lobe body portion of stator foundry goods finished).In order to guarantee the foundry goods Forming Quality, change the station time and want≤5 minutes.In order to replenish the consumption of slag, the assurance depth of slag bath is stable, highly locates at approaching crystallizer top 30-35% down, and remaining 25-15% slag charge is added in beginning successively, and feed in raw material and want even, after crystallizer is full of instantly, the reinforced end.
After E, following crystallizer were full of, mobile trolley used immediately changing to another station folding crystallizer above the crystallizer down, was replaced by electrode circular consutrode simultaneously, the major axis part of beginning founding stator foundry goods.In order to guarantee the Forming Quality of foundry goods binding site, that folds last crystallizer, the circular consutrode of replacing wants≤10 minutes total time.The optional 3000A to 15000A of fusion current (limit is taken off in the foundry goods cross section for a short time, the big capping in foundry goods cross section) of stator foundry goods major axis part.In the fusion process of stator foundry goods major axis part, also replaceable consutrode, method is identical with following crystallization replacing consutrode.
F, before finishing, stator foundry goods major axis partial melting in about 40 minutes, carries out the feeding operation.The feeding operation adopts " intermittently subtracting current method " or " subtracting current method continuously " commonly used in the electroslag remelting process all can.
In G, the fusion-casting process, the cooling water of crystallizer will remain in 0.15MPa to the 0.4Mpa pressure limit, and must not occur cutting off the water supply or the crystallizer drainage.
After H, founding finish, will go up crystallizer and upwards extract out; The horizontal disassemble of following crystallizer.The then foundry goods demoulding smoothly.
The utility model is simple in structure, and is easy to use.Defectives such as the shrinkage cavity of adopt using the utility model can solve sand casting well during electroslag casting guide blade to be difficult to eliminate, loose, slag inclusion, crackle, every performance indications of foundry goods reach with material forging level, and using rate of metal height, operation is simple, production is short with the cycle, can produce large-scale stator.
(4) description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the present utility model.
Fig. 2 is a vertical view of going up crystallizer.
Fig. 3 is the vertical view of following crystallizer.
Fig. 4 is a kind of guide vane structure schematic diagram.
Fig. 5 is that the P of Fig. 4 is to view.
(5) specific embodiment
The electroslag casting guide blade fourplatemold is upper and lower minute body structure, promptly by crystallizer 1 and last crystallizer 2 are formed last crystallizer 2 folded dropping on down on the crystallizer 1 down.Last crystallizer 2 is a monolithic construction.Following crystallizer 1 is forward and backward opposite opened structure, promptly is made of preceding die body 4 and back die body 5 levels butt joint.Following crystallizer 1 cavity shape is consistent with the minor axis and the lobe shape of the stator of intending casting, and last crystallizer 2 cavity shapes are consistent with stator major axis shape.On last crystallizer 2 and following crystallizer 1, be installed with hanger 3 respectively.
Claims (2)
1, electroslag casting guide blade fourplatemold is characterized in that being made up of following crystallizer (1) and last crystallizer (2), and last crystallizer (2) is folded to be dropped on down on the crystallizer (1); Following crystallizer (1) is forward and backward opposite opened structure, constitute by preceding die body (4) and back die body (5) level butt joint, the cavity shape of following crystallizer (1) is consistent with the shape of the minor axis of stator and lobe body, and last crystallizer (2) cavity shape is consistent with stator major axis shape.
2, electroslag casting guide blade fourplatemold according to claim 1 is characterized in that being installed with hanger (3) respectively on crystallizer (1) and the last crystallizer (2) down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070032 CN2710798Y (en) | 2004-07-28 | 2004-07-28 | Combination type crystallizer used for electroslag smelting casting guide blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420070032 CN2710798Y (en) | 2004-07-28 | 2004-07-28 | Combination type crystallizer used for electroslag smelting casting guide blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2710798Y true CN2710798Y (en) | 2005-07-20 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420070032 Expired - Lifetime CN2710798Y (en) | 2004-07-28 | 2004-07-28 | Combination type crystallizer used for electroslag smelting casting guide blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2710798Y (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728821A (en) * | 2011-04-14 | 2012-10-17 | 沈阳铸造研究所 | Process method for electroslag smelting casting ship lift rack |
| CN104028732A (en) * | 2014-07-04 | 2014-09-10 | 黑龙江鑫源特钢有限公司 | Electroslag smelting and casting sector-plate special-shaped crystallizer |
| CN107876739A (en) * | 2017-12-13 | 2018-04-06 | 沈阳市盛华特种铸造有限公司 | A kind of method of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming |
| CN109604567A (en) * | 2019-01-18 | 2019-04-12 | 潍坊亚东冶金设备有限公司 | The preparation method of the sectionally assembled seperated special-shaped crystallizer of electroslag smelting casting blade multilayer |
| CN109604568A (en) * | 2019-01-18 | 2019-04-12 | 潍坊亚东冶金设备有限公司 | Electroslag smelting casting blade is servo-actuated with type, is segmented molding machine and forming method step by step |
| CN110014136A (en) * | 2019-04-23 | 2019-07-16 | 沈阳铸造研究所有限公司 | A kind of method that the independent water mold of nesting realizes electroslag smelting casting removal subsidy |
| CN114350970A (en) * | 2021-12-28 | 2022-04-15 | 沈阳铸造研究所有限公司 | Method for controlling quality of guide vane casting of water turbine through electroslag remelting of double-loop conductive crystallizer |
-
2004
- 2004-07-28 CN CN 200420070032 patent/CN2710798Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102728821A (en) * | 2011-04-14 | 2012-10-17 | 沈阳铸造研究所 | Process method for electroslag smelting casting ship lift rack |
| CN102728821B (en) * | 2011-04-14 | 2015-03-04 | 沈阳铸造研究所 | Process method for electroslag smelting casting ship lift rack |
| CN104028732A (en) * | 2014-07-04 | 2014-09-10 | 黑龙江鑫源特钢有限公司 | Electroslag smelting and casting sector-plate special-shaped crystallizer |
| CN107876739A (en) * | 2017-12-13 | 2018-04-06 | 沈阳市盛华特种铸造有限公司 | A kind of method of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming |
| CN109604567A (en) * | 2019-01-18 | 2019-04-12 | 潍坊亚东冶金设备有限公司 | The preparation method of the sectionally assembled seperated special-shaped crystallizer of electroslag smelting casting blade multilayer |
| CN109604568A (en) * | 2019-01-18 | 2019-04-12 | 潍坊亚东冶金设备有限公司 | Electroslag smelting casting blade is servo-actuated with type, is segmented molding machine and forming method step by step |
| CN109604567B (en) * | 2019-01-18 | 2020-10-30 | 潍坊亚东冶金设备有限公司 | Method for preparing multilayer sectional combined split special-shaped crystallizer of electroslag casting blade |
| CN109604568B (en) * | 2019-01-18 | 2023-08-08 | 潍坊亚东冶金设备有限公司 | Follow-up, sectional and step-by-step forming device and forming method for electroslag casting blade |
| CN110014136A (en) * | 2019-04-23 | 2019-07-16 | 沈阳铸造研究所有限公司 | A kind of method that the independent water mold of nesting realizes electroslag smelting casting removal subsidy |
| CN110014136B (en) * | 2019-04-23 | 2021-05-04 | 沈阳铸造研究所有限公司 | Method for removing subsidies in electroslag casting by nesting independent water-cooled crystallizers |
| CN114350970A (en) * | 2021-12-28 | 2022-04-15 | 沈阳铸造研究所有限公司 | Method for controlling quality of guide vane casting of water turbine through electroslag remelting of double-loop conductive crystallizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20140728 Granted publication date: 20050720 |