CN100482381C - Aluminium alloy crystallizer for electroslag fusion casting of small guide blade - Google Patents
Aluminium alloy crystallizer for electroslag fusion casting of small guide blade Download PDFInfo
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- CN100482381C CN100482381C CN 200610134704 CN200610134704A CN100482381C CN 100482381 C CN100482381 C CN 100482381C CN 200610134704 CN200610134704 CN 200610134704 CN 200610134704 A CN200610134704 A CN 200610134704A CN 100482381 C CN100482381 C CN 100482381C
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Abstract
The aluminum alloy crystallizer for electroslag fusion casting of small guide blade includes inner cavity plate, outer cavity plate, reinforcing ribs, bracings, upper flange, lower flange, water inlet pipe and water outlet pipe. The inner cavity plate, the outer cavity plate, the reinforcing ribs, the upper flange and the lower flange are cast into one integral structure; the outer cavity plate, the bracings, the water inlet pipe and the water outlet pipe are cast or welded into one integral structure; and the inner cavity plate, the reinforcing ribs, the upper flange, the lower flange, the outer cavity plate and the bracings are welded integrally. The present invention adopts aluminum alloy material with performance between copper and steel, and has the advantages of good casting performance, good welding performance, low cost, etc.
Description
Technical field
The present invention relates to a kind of mold and pattern for casting tool, particularly relate to aluminium alloy crystallizer and preparation and using method that a kind of electroslag casting guide blade is used.
Background technology
Electroslag smelting casting is the special casting method that integrates refining of metal and casting, adopt the electroslag smelting casting method can the organization of production densification, dimensional accuracy height, premium casting that non-metallic inclusion is few.
Crystallizer is the vitals of electroslag furnace, and it plays working chamber's effect of fusing, refining on the one hand; Play a part the foundry goods mould on the other hand again and form foundry goods.
Electroslag smelting casting is adopted steel or copper-steel design usually with crystallizer (sand mold that is equivalent to conventional cast), but all has shortcoming in various degree.The thermal conductivity factor of steel is little in the steel crystalliser, causes the foundry goods Forming Quality very poor; If recirculated water cooling insufficient strength in fusion-casting process foundry goods and crystallizer fusion (being commonly called as " stick box ") will occur, causes crystallizer distortion leakage slag, situation such as leak, and then causes waste product; Steel crystalliser is shorter service life in addition, is no more than 10 heats usually.In copper-steel crystalliser, all inner chamber adopts copper coin, and steel plate is adopted at exocoel and all the other positions, can avoid the little shortcoming of thermal conductivity factor of steel crystalliser, and the foundry goods Forming Quality is better, long service life.But the disadvantage of copper-steel crystalliser is that the weldability between the copper steel is very poor, does not have good fusion area, so the manufacturing of copper-steel crystallizer and maintenance all compare difficultly, and cost is also very high.In addition, more than two kinds of traditional crystallizers all adopt is structure welding fabrication mode, change greatly for cross section, baroque foundry goods can only adopt the way of simplifying molded lines, and allowance is increased, and has reduced using rate of metal, increases cost.Therefore traditional crystallizer is suitable for foundry goods simple in structure.
Summary of the invention
Purpose of the present invention, be at the problems referred to above, the aluminium alloy crystallizer that provides a kind of employing casting-weldering mode to make, be used to produce the small guide blade foundry goods, not only solve problems such as stator production operation and maintenance difficult, service life is short preferably, and can be used for producing complex structure, stator that dimensional requirement is high.
The technical scheme that adopts is:
Aluminium alloy crystallizer for electroslag fusion casting of small guide blade comprises the determining of manufacture method, the selection of material and detailed structural design.
1, manufacture method determines
In view of guide vane structure complexity, molded lines accuracy requirement height, the present invention adopts casting-welding structure.Both: the inner chamber template (containing reinforcement, upper flange, lower flange) that crystallizer is used for moulding adopts the aluminium alloy casting mode to make, and can guarantee that the molded lines size is accurate; The exocoel template that crystallizer is used to seal (containing lacing wire, water pipe) adopts clod wash welding or casting method manufacturing all can; The inner chamber template adopts welding manner to combine with the exocoel template.
2, the selection of material
The body construction of crystallizer all adopts aluminum alloy materials to make.If inner chamber template and exocoel template all adopt forging type, need to select the aluminum alloy materials of good casting property, for example aluminium alloys such as alloy designations ZL101, ZL114A.If the exocoel template adopts the cold-bending welding square method, can select the aluminium alloy extrusions LF21 of cold-bending property and good welding performance, need to have good solderability simultaneously with inner chamber section bar material.
3, structural design and using method
The body construction of crystalline aluminophosphate device comprises: inner chamber template, exocoel template, reinforcement, upper flange, lower flange, lacing wire etc.Wherein, the effect of reinforcing inner chamber template and exocoel template is played in reinforcement and lacing wire respectively.
Inner chamber template, reinforcement, upper flange, lower flange adopt casting method to cast an overall structure; Exocoel template, lacing wire adopt clod wash welding or casting method all can, and the bottom of exocoel template is provided with water inlet pipe, top is provided with outlet pipe;
In order to adapt to the needs that are used in combination of 2 above crystallizers, add a thick additional steel plate of 8-10mm at the end face of crystallizer upper flange, be fixed together by a plurality of bolt crystallizer upper flanges.End face at flange is provided with additional steel plate, can increase wear-resistant and impact resistance in the use.In addition, the positioner that is used to assemble crystallizer also can be welded on additional steel plate.
Through thermal conduction study and Mechanics Calculation, above-mentioned inner chamber template thickness is that 10-25mm, exocoel template thickness are 8-15mm, and the water-cooled slit between inner chamber template and the exocoel template is 15-25mm.
In order to eliminate the thermal stress that fusion-casting process produces, increase service life, need regularly aluminium alloy crystallizer to be carried out annealing in process and solution treatment.
The aluminum alloy materials that the present invention adopts, every performance indications are between copper and steel, possess advantages such as castability is better, weldability better, price is lower, easy processing, overcome the shortcoming of traditional crystallizer, solved key issues such as the crystallizer manufacturing of stator foundry goods and maintenance, production operation, service life preferably.Particularly the present invention has adopted the method for casting to make crystalline aluminophosphate device inner chamber template, to the dimensional accuracy of guaranteeing foundry goods, enhance productivity, reduce production costs and played key effect.
Description of drawings
Fig. 1 is the structural representation of aluminium alloy crystallizer for electroslag fusion casting of small guide blade of the present invention.
Fig. 2 is the electroslag casting guide blade structural representation.
Fig. 3 is the cast structure schematic diagram of crystalline aluminophosphate device.
Fig. 4-Fig. 9 is respectively A-A, F-F, C-C, B-B, D-D, the E-E view of Fig. 3.
The specific embodiment
Aluminium alloy crystallizer for electroslag fusion casting of small guide blade comprises inner chamber template 4, exocoel template 6, reinforcement 7, lacing wire 8, upper flange 1 and lower flange 10, water inlet pipe 9 and outlet pipe 5, additional steel plate 3.
Inner chamber template, reinforcement, upper flange, lower flange adopt casting method to cast an overall structure; Exocoel template, lacing wire, water inlet pipe and water outlet pipe adopt clod wash welding or casting method to make an overall structure.After inner chamber template (containing reinforcement, upper flange, lower flange) and the whole seam of exocoel template (containing lacing wire, water pipe), form the crystallizer body.Additional steel plate 3 is fixed together by bolt 2 and upper flange 1.Wherein: the thick 10～15mm of inner chamber template, the thick 10～15mm of reinforcement, upper flange, the thick 20mm of lower flange, the thick 8～12mm of exocoel template, the thick 8～12mm of lacing wire, water inlet pipe and the water outlet thickness of pipe 3～5mm, the additional thick 8～10mm of steel plate.
The preparation method of aluminium alloy crystallizer for electroslag fusion casting of small guide blade: at first according to the technology of the conditional parameter deisgn product of casting product, through thermal conduction study and Mechanics Calculation, determine the inside and outside template thickness and the water seam width of crystallizer, and then the geometry of definite crystallizer; Adopt casting method to make the inner chamber template (containing reinforcement, upper flange, lower flange) of crystallizer, adopt clod wash welding or casting method to make exocoel template (containing lacing wire, water pipe); Adopt welding method with inner chamber template and exocoel template welding one, and by bolt connecting mode additional steel plate is installed at the upper flange end face; At last the crystalline aluminophosphate device of having made is carried out pressure-resistant seal check, can carry out founding production after qualified.
Specifically comprise:
1, material is determined
Inner chamber template, exocoel template, reinforcement, lacing wire, upper flange and lower flange, water inlet pipe and outlet pipe are made by aluminum alloy materials.As aluminium alloys such as alloy designations ZL101, ZL114A.Additional steel plate 3 adopts the A3 steel plate to make.
2, calculate according to thermal conduction study, water seam width is 15～25mm, has good uniformity with the water-cooled of guaranteeing crystallizer.
3, in order to increase wear-resistant and impact resistance in the use, add a thick additional steel plate of 8～10mm at the end face of crystallizer upper flange, be fixed together by a plurality of bolts and crystallizer upper flange.Simultaneously, the positioner used of assembling crystallizer also can be welded on the additional steel plate.
4, the design of each geometry of crystalline aluminophosphate device, for example the position that is prone to stress damage all is designed to round-corner transition, cast out the non-deformability that several reinforcements increase the crystalline aluminophosphate device at the inner chamber template back side, the height of reinforcement and width calculate high 10mm by the sand casting general formula, wide 6mm is along uniform the getting final product in the yielding position of crystallizer lobe body.
5, the manufacturing of crystallizer
Inner chamber template, reinforcement, upper flange, lower flange are by casting method, are cast as an overall structure.The crystallizer of this making is because the structure molded lines is simple relatively, so exocoel template, lacing wire, water inlet pipe and water outlet pipe employing cold-bending welding square legal system structure in aggregates (for the stator of structure molded lines complexity, also can consider casting method).After above-mentioned two overall structure seam, form the crystallizer body.Additional steel plate is fixed together by bolt and upper flange.
6, because the intensity and the thermal fatigue strength of Birmasil are all lower, in the electroslag casting guide blade environment, easily cause stress damage.In crystalline aluminophosphate device fusion-casting process, should carry out necessary heat treatment to eliminate the thermal stress that fusion-casting process produces to it according to the big or small trade mark of crystalline aluminophosphate device for this reason.The aluminium alloy crystallizer of this making behind founding 2 stoves, carry out one time 300 ℃, 5 hours annealing in process to the crystallizer conventional solution treatment of reforming once, surpasses 40 heats the service life of crystallizer behind founding 10 stoves.
Claims (2)
1, aluminium alloy crystallizer for electroslag fusion casting of small guide blade, comprise inner chamber template (4), exocoel template (6), a plurality of reinforcement (7), a plurality of lacing wire (8), upper flange (1), lower flange (10), water inlet pipe (9) and outlet pipe (5), it is characterized in that: inner chamber template (4), a plurality of reinforcement (7), upper flange (1) and lower flange (10) adopt casting method to cast an overall structure, a plurality of reinforcements (7) are positioned at inner cavity plate (4) back side, and are uniform along the yielding position of crystallizer lobe body; Exocoel template (6), a plurality of lacing wire (8), water inlet pipe (9), outlet pipe (5) adopt clod wash welding or casting method to connect into an overall structure; Inner chamber template (4), reinforcement (7), upper flange (1) and lower flange (10) are connected with exocoel template (6), the whole seam of lacing wire (8), and water seam width is 15～25mm between inner chamber template (4) and the exocoel template (6).
2, aluminium alloy crystallizer for electroslag fusion casting of small guide blade according to claim 1 is characterized in that being provided with additional steel plate (3) on the upper surface of upper flange (1), additional steel plate (3) is fixedlyed connected with upper flange (1) by bolt (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610134704 CN100482381C (en) | 2006-12-12 | 2006-12-12 | Aluminium alloy crystallizer for electroslag fusion casting of small guide blade |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200610134704 CN100482381C (en) | 2006-12-12 | 2006-12-12 | Aluminium alloy crystallizer for electroslag fusion casting of small guide blade |
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| CN1974073A CN1974073A (en) | 2007-06-06 |
| CN100482381C true CN100482381C (en) | 2009-04-29 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014766A (en) * | 2014-06-26 | 2014-09-03 | 黑龙江鑫源特钢有限公司 | Specially-shaped electro-slag casting cross shaft crystallizer |
| 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 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102615272B (en) * | 2011-01-26 | 2014-08-20 | 沈阳铸造研究所 | Crystallizer for MW (megawatt)-scale wind power torsion shaft electroslag casting |
| CN102728821B (en) * | 2011-04-14 | 2015-03-04 | 沈阳铸造研究所 | Process method for electroslag smelting casting ship lift rack |
-
2006
- 2006-12-12 CN CN 200610134704 patent/CN100482381C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104014766A (en) * | 2014-06-26 | 2014-09-03 | 黑龙江鑫源特钢有限公司 | Specially-shaped electro-slag casting cross shaft crystallizer |
| 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 |
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| Publication number | Publication date |
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| CN1974073A (en) | 2007-06-06 |
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