CN207770803U - A kind of device of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming - Google Patents
A kind of device of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming Download PDFInfo
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Abstract
The utility model is related to electroslag smelting casting production turbine runner blade casting field, especially a kind of devices of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming.Electroslag smelting casting is used to complete the double refining purification of consutrode material, casting near-net-shape, and detailed process is as follows：1) spray mold structure form uses combined type or split type；2) consutrode in fusion-casting process consists of two parts, i.e., fixed electrode and float electrode；3) power-supplying forms are using exchange single electrode series circuit, bipolar electrode series loop combined power supply way, increase electroslag smelting casting region slag blanket temperature using the electric power loop that bipolar electrode series electrical interpolar is constituted, increase regional metal mobility, control area setting rate makes blade fusion cast process.The casting that the utility model technology is suitable for tubular-turbine generator runner bucket, mixed-flow wheel generator runner bucket or axial flow type hydro-turbo generator runner bucket manufactures.
Description
Technical field
The utility model is related to electroslag smelting casting production turbine runner blade casting field, especially a kind of rotary wheel of water turbine
The device of three-dimension curved surface blade electroslag smelting casting straight forming.
Background technology
Electroslag smelting casting refines as a kind of collection and takes shape in integrated casting technique, is now widely used for high casting quality
It is required that field.Consutrode is placed in crystallizer molten state slag blanket by its founding generally using consutrode as founding raw material
Reflow process is completed, this process needs to keep the process safety distance of electrode and crystallizer internal cavity, and this requires in founding
Cheng Zhong, as the carry out consutrode of founding keeps electrode and slag contacts to complete entire fusion-casting process with melting.
For profiled piece, generally refer to castings crystallization device here does not have public cavity casting, i.e. consumable to float electrode
Electrode can not freely cooperation melts speed and moves up and down in entire founding crystallizer.On the other hand, some profile shapes
Local protuberance or recess so that consutrode is larger at a distance from crystallizer cavity so that metal during consutrode melting
Liquid is not full of crystallizer cavity also and solidifies, and can not ensure the integrality of Filling Processes of Castings, this is current electroslag casting process
Where limitation, as castings crystallization device does not have public cavity casting to float electrode and only relies on float electrode that founding can not be completed
Complicated shape casting be current electroslag casting process main bottleneck.
Electroslag smelting casting in recent years is used widely in hydropower industry, especially hydrogenerator movable guide vane, and with
The attention of adjustment and environmental protection of the country to power construction structure, positive Hydropower Development has become China's power industry construction
Guilding principle.Water power belongs to reproducible clean energy resource, is conducive to environmental protection, Hydropower Development, especially sediment charge compared with
Design, manufacture and the production capacity of the poor large-sized water turbine unit of high water quality, be promote national economic development and promote machinery
The demand of industrial development.
Core of the rotating wheel of hydro-generator as energy conversion critical component and hydrogenerator in turbine-generator units
Center portion part, quality and service life directly affect safety, efficiency of operation and the cost of turbine-generator units operation.Especially
It is the runner bucket of mixed flow type generator, mixed-flow wheel generator runner bucket, axis stream generator, since it uses extensive city
Field storage is huge.
Currently, runner bucket mainly uses sand mould casting method to manufacture both at home and abroad, using the then numerical control of sand casting blank
The process of processing, and sand casting, due to the limitation of its technique, castings material density and quality are poor；And use sand
Mold casting slab coordinates compression molding, though improving casting quality to a certain extent, sand casting quality disadvantage still cannot be basic
It solves；For electroslag smelting casting produce slab, coordinate compression molding, though overcome the mass defect of sand-cast, manufacturing process at
This is higher.
Utility model content
The purpose of this utility model is to provide a kind of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight formings
Device, mainly solve electroslag casting process can not founding complicated abnormal shape part, i.e., castings crystallization device to activity supplement electrode without public affairs
The casting of syntype chamber casting.
The technical solution of the utility model is：
A kind of device of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming, the device use spray knot
Brilliant device, the crystallizer cavity are one layer, two layers or three layers or more structure, are responsible for the different curve part of blade three dimensional change
Molding；Consutrode is set in crystallizer cavity, and consutrode is formed by fixing electrode and float electrode, fixed in fusion-casting process
Electrode is fixed, and fixed electrode and float electrode are inserted in slag blanket, and float electrode is constantly supplemented to crystallizer melting position
Heelpiece is arranged in the bottom of metal, crystallizer cavity.
The device of the rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming, spray mold structure
Form uses combined type or split type.
The device of the rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming, the power-supplying forms of the device are adopted
With exchange single electrode series circuit, bipolar electrode series loop combined power supply way, the electricity constituted using bipolar electrode series electrical interpolar
Resource loop increases electroslag smelting casting region slag blanket temperature, increases regional metal mobility, and control area setting rate makes blade founding
Molding；On the basis of the electric power loop constituted between single electrode series loop electrode, by increasing bipolar electrode series loop, make electroslag
Founding turbine blade process can be carried out continuously.
The device of the rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming, fixed electrode and an activity
Electrode constitutes power supply series loop, and a float electrode may be constructed power supply series loop, fixed electrode with another float electrode
Power supply series loop is constituted with heelpiece, float electrode and heelpiece constitute series loop.
The device of the rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming, in single electrode series circuit
Electrode is float electrode, and the electrode in bipolar electrode series loop is fixed electrode or float electrode, is connected in a loop
Electrode is one or more, and the electric power loop constituted between single electrode series loop electrode eliminates bipolar electrode series loop consumable
The imbalance of electrode founding, to ensure the steady progress of founding.
The device of the rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming, single electrode series circuit refers to
Single electrode and heelpiece and the series loop that casting is formed between liquid molten slag blanket is solidified, bipolar electrode series loop refers to two
The power supply series loop that electrode is formed between liquid molten slag blanket, exchange single electrode series circuit, bipolar electrode series loop mixing
Power supply mode refers to that single electrode series circuit and one or two or more sets of bipolar electrode series loops are combined to more power supplys of composition
Circuit powers up mode.
The device of the rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming, crystallizer are profile-followed crystallization
Device, consutrode is arranged in crystallizer cavity, and float electrode constantly supplements metal inside crystallizer to crystallizer melting position；
Fixed electrode is profile-followed, fixed relative to crystallizer, and float electrode moves in fusion-casting process, and float electrode section is
Round, rectangular or other arbitrary shapes, fixed electrode is whole or separate assembling, the number of fixed electrode and float electrode
Amount is one or more according to cast shape feature.
The device of the rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming, for rotating wheel of hydro-generator
The electroslag smelting casting of blade blank, using one or more fixation electrode in crystallizer cavity, before crystallizer group case, fixed electricity
Pole is fixed in crystallizer cavity, its mutual position is fixed after each electrode installation is in place, and float electrode in crystallizer by leading to
Road constantly carries out consutrode supplement to fusion-casting process.
The device of the rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming, crystallized above comprising two layers
In the fusion-casting process of type chamber, the crystallizer cavity cross section for being located at upper layer is that the part with float electrode channel is profile-followed,
The fixed electrode of middle setting float electrode and part, founding carry out successively from the bottom to top.
The device of the rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming, rotary wheel of water turbine three-dimension curved surface
Blade is tubular-turbine generator runner bucket, mixed-flow wheel generator runner bucket or axial flow type hydro-turbo generator runner
Blade.
The design philosophy of the utility model is：
The utility model electroslag smelting casting is used to complete the double refining purification of consutrode material, casting near-net-shape, tool
Body process is as follows：1) spray mold structure form uses combined type or split type；2) consutrode in fusion-casting process
Consist of two parts, i.e., fixed electrode and float electrode, fixed electrode is profile-followed, fixed relative to crystallizer；3) it powers
Form utilizes bipolar electrode series electrical interpolar using exchange single electrode series circuit, bipolar electrode series connection multiloop combined power supply way
The electric power loop of composition increases electroslag smelting casting region slag blanket temperature, increases regional metal mobility, and control area setting rate makes
Blade fusion cast process.Bipolar electrode series loop consutrode is eliminated using the electric power loop constituted between single electrode series loop electrode
The imbalance of founding enables electroslag smelting casting turbine blade process to be carried out continuously.Electrode working forms are in fusion-casting process：It is living
Moving electrode is constantly supplemented to melting slag bath, and fixed electrode is coordinated to complete fusion-casting process, to make turbine blade founding at
Type is primarily adapted for use in the casting of rotating wheel of hydro-generator three-dimension curved surface blade electroslag smelting casting straight forming casting.
The advantages of the utility model and advantageous effect are：
1, the utility model solves the one-time formed electroslag casting process bottleneck of hydro-generator runner blade three-dimension curved surface,
Casting solidifies in water mold, and cooling velocity is fast, solid-liquid forward position crystallization temperature gradient is big, since casting quickly solidifies, casting
Part dense structure.
2, small using the utility model metal crystallizer dimensional accuracy height, deformation, thus cast(ing) surface is bright and clean, more than processing
It measures small.Simultaneously as using consecutive solidification technique, casting does not have casting system and riser, therefore rate of metal is high, realizes casting
Part near-net-shape (allowance ranging from 3~20mm).Meanwhile be not likely to produce the common slag inclusion of sand-cast, stomata, shrinkage porosite and
The casting flaws such as shrinkage cavity, and flaw detection requirement more higher than sand casting can be met.
3, the utility model replaces sand mold using metal crystallizer, nonmetallic makes it is not necessary that binder and coating etc. are a large amount of
Proximate matter material, no solid waste discharge reduce the pollution to environment.
4, the utility model refining casting can reach the mechanical performance of same material forging and flaw detection requires, and chemical composition is equal
Even, dense structure, dendrite refinement, microscopic segregation it is small, without it is loose, without slag inclusion shrinkage cavity the defects of, field trash be in Dispersed precipitate, fatigue
Service life is better than Clean Steel, and has the advantages of isotropism not available for forge piece, while having higher fatigue resistance energy
And higher anti-crack generation and scalability.
5, the utility model can be repeated several times use due to metal crystallizer, can effectively improve production efficiency, reduce life
Produce cost.
Description of the drawings：
Fig. 1 is one schematic cross-section of electroslag smelting casting blade crystallizer.In figure, 1 float electrode；2 fix electrode；3 slag blankets；
4 casting coagulation forming part；5 crystallizer cavities；6 heelpieces.
Fig. 2 is the power supply series loop schematic cross-section of electrode.In figure, 1 float electrode；2 fix electrode；3 slag blankets；5 knots
Brilliant type chamber；6 heelpieces；7 power supplys I；8 power supplys II.
Fig. 3 is power supply series loop schematic diagram.
Specific implementation mode
As shown in Figure 1, the utility model electroslag smelting casting manufacturing device designs and manufactures hydro-generator runner blade crystallization
Consutrode is arranged in crystallizer cavity 5, consutrode is by fixing electricity by one section or two sections of composition described above in device, crystallizer cavity 5
Pole 2 and float electrode 1 form, and fix that electrode 2 is fixed, and fixed electrode 2 and float electrode 1 are inserted in slag blanket in fusion-casting process
In 3, float electrode 1 constantly supplements metal to crystallizer melting position, reaches raising material by the design of near net-shaped crystallizer
Heelpiece 6 is arranged in the bottom of the purpose of utilization rate, crystallizer cavity 5.
As shown in Fig. 2, fixed electrode 2 can constitute power supply series loop, a float electrode 1 with a float electrode 1
Power supply series loop is may be constructed with another float electrode 1, fixed electrode 2 can constitute power supply series loop, activity with heelpiece 6
Electrode 1 can constitute series loop with heelpiece 6.
In specific implementation process, the double refining that the utility model electroslag smelting casting is used to complete consutrode material carries
The tasks such as pure, casting near-net-shape, wherein castings material, crystallizer and consutrode have following characteristics：
1) crystallizer selects
Spray mold structure form uses combined type or split type.
2) electrode form
As shown in Figure 1, the consutrode in fusion-casting process consists of two parts, i.e. float electrode 1 and fixed electrode 2, Gu
Fixed electrode 2 is profile-followed, fixed relative to crystallizer, and 1 section of float electrode can be round, rectangular or any other shape
Shape, fixed electrode 2 can be whole or separate assembling.Consutrode working forms are in fusion-casting process：Float electrode 1
It is constantly supplemented to 3 position of melting slag blanket, touches the fusing filling crystallizer of fixation electrode 2 cavity 5 of melting slag blanket 3, it is complete
At fusion-casting process.Wherein, float electrode can be one or more, and fixed electrode can be one or more.Cause
The difference of casting structure form, the power-up circuit of power supply constitute can there are one or it is more than two (Fig. 2).
Electroslag smelting casting for hydro-generator runner blade blank, it is solid using one or more in crystallizer cavity
Fixed electrode, before crystallizer group case, fixed electrode is fixed in crystallizer cavity, its mutual position is solid after each electrode installation is in place
Fixed, float electrode constantly carries out consutrode supplement by crystallizer internal channel to fusion-casting process；According to cast shape feature, adopt
With a founding or segmentation founding, fixed electrode is mounted and fixed to crystallizer designated position, continues founding later.It is wrapping
In fusion-casting process containing two layers of type chamber crystallized above, the crystallizer cavity cross section for being located at upper layer is with float electrode channel
Part it is profile-followed, be provided with the fixed electrode of float electrode and part, founding carries out successively from the bottom to top；Using segmentation founding
When, mobile founding station is needed after lower layer section founding, assembles upper layer crystallizer cavity and counter electrode, to complete the molten of entire casting
Casting process.
It is electric in liquid molten slag blanket by bipolar electrode series loop according to space three-dimensional deformation surface cast shape feature
Interpolar forms local heat source melting zone, increases the mobility of molten metal, keeps casting molding full；In single electrode series circuit for the first time
Power-up makes slag blanket become molten condition, creates conditions for bipolar electrode series loop work.Melt slag blanket with casting founding liquid level and
It is promoted, the series loop be respectively connected can switch over, and realize that single loop founding carries out mutual with multiloop founding in fusion-casting process
Mutually switch, the one-pass molding to ensure intricate casting is full.
As shown in figure 3, in power supply series loop, the electrode in single electrode series circuit is float electrode, bipolar electrode string
The electrode joined in circuit is fixed electrode or float electrode, and the electrode connected in a loop is one or more, single
The electric power loop constituted between electrode series connection loop electrode is that bipolar electrode series loop work creates conditions and eliminates bipolar electrode series connection
The imbalance of circuit consutrode founding, to ensure the steady progress of founding.
Wherein, single electrode series circuit refers to single electrode and heelpiece and has solidified casting and formed between liquid molten slag blanket
Series loop, bipolar electrode series loop refers to the power supply series loop that two electrodes are formed between liquid molten slag blanket, and exchange is single
Electrode series loop, bipolar electrode series loop combined power supply way refer to by single electrode series circuit and one or two or more sets of pairs
Electrode series loop is combined more electric power loops power-up mode of composition；By being powered up in single electrode series electric power loop, make string
Solid-state slag blanket in connection circuit generates resistance heat and generates high-temperature liquid state melting slag blanket, and consumable electrode, single electrode series circuit is
The work of bipolar electrode series loop creates conditions, and improves the mobility of surrounding metal liquid, can by increasing bipolar electrode series loop
Control the region casting solidification speed.
Power-supplying forms utilize bipolar electrode using exchange single electrode series circuit, bipolar electrode series loop combined power supply way
The electric power loop that series electrical interpolar is constituted increases electroslag smelting casting region slag blanket temperature, increases regional metal mobility, control area
Setting rate makes blade fusion cast process；It is double by increasing on the basis of the electric power loop constituted between single electrode series loop electrode
Electrode series loop enables electroslag smelting casting turbine blade process to be carried out continuously.
3) castings material
Casting can be carbon steel, low-alloy steel or stainless steel, including and being not limited to material (ASTM described in following standard
743、ASTM 483、ASTM 148、EN 10283、GB/T 6967、GB/T 11352、JB/T5000.6、JB/T 10384、JB/
T 7349, JB/T 6405), specific material citing is such as：
Carbon steel：ZG230-450, ZG270-500, ZG310-570 etc.；
Low-alloy steel：ZG20SiMn, ZG25Mn18Cr4 etc.；
Stainless steel：ZG10Cr13、ZG06Cr13Ni4Mo、ZG06Cr13Ni5Mo、ZG06Cr16Ni5Mo、
ZG00Cr13Ni4Mo, ZG00Cr13Ni5Mo, ZG00Cr16Ni5Mo, GRADE CA6NM etc..
In the following, the utility model is further described by embodiment.
Embodiment 1
As Figure 1-Figure 2, in the present embodiment, the electroslag smelting casting of mixed-flow wheel generator runner bucket blank will consolidate
Fixed electrode 2 with and crystallizer assembled by technological requirement, consutrode includes there are two float electrode 1.Fixed 2, one, electrode
Float electrode 1 constitutes an electric power loop A with power supply I 7, another float electrode 1, heelpiece 6 and power supply II 8 constitute a power supply
Circuit B.In fusion-casting process, electric power loop B heats slag blanket 3, obtains liquid molten slag blanket, and item is created in the work for being electric power loop A
Part, electric power loop A make the regional metal mobility enhance, and complete the fusion cast process in complex-shaped surface mould region, with fusion-casting process into
Row consutrode constantly consumes, and float electrode 1 is continuously replenished, until it is casting coagulation forming part to complete casting fusion cast process
4。
Embodiment 2
As Figure 1-Figure 2, in the present embodiment, the electroslag of axial-flow type (tubular) hydro-generator runner blade blank is molten
It casts, using float electrode 1 and fixed electrode 2 in crystallizer cavity 5.Before crystallizer group case, fixed electrode 2 is fixed on crystallization
The designated position of type chamber 5, after float electrode 1 is installed in place, mutual position keeps safe distance, float electrode 1 continuous
Consutrode supplement is carried out to fusion-casting process, in special area, fixed electrode 2 contacts liquid liquid slag layer 3 and begins to turn on power supply
Circuit, electrode start to melt.
Embodiment the result shows that, the utility model be near-net-shape block cast blank manufacturing technology, especially to water wheels send out
Motor runner bucket is one-time formed electroslag molten casting device, and the spray produced has higher fatigue resistance energy, higher
Anti-crack generation and scalability, quality and performance are not less than same material rough forging.Using electroslag smelting casting technology, production casting
The Internal Quality of Cast of part blank, production is not less than same material rough forging quality standard.
Claims (10)
1. a kind of device of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming, which is characterized in that the device uses
Spray crystallizer, the crystallizer cavity are one layer, two layers or three layers or more structure, are responsible for the difference of blade three dimensional change
The molding of curvature portion；Consutrode is set in crystallizer cavity, and consutrode is formed by fixing electrode and float electrode, founding
It is fixed that electrode is fixed in the process, and fixed electrode and float electrode are inserted in slag blanket, and float electrode is constantly molten to crystallizer
Melt position supplement metal, heelpiece is arranged in the bottom of crystallizer cavity.
2. the device of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming described in accordance with the claim 1, feature
It is, spray mold structure form uses combined type or split type.
3. the device of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming described in accordance with the claim 1, feature
It is, the power-supplying forms of the device are using exchange single electrode series circuit, bipolar electrode series loop combined power supply way, using double
The electric power loop constituted between electrode series connection electrode increases electroslag smelting casting region slag blanket temperature, increases regional metal mobility, control
Zone freezing speed makes blade fusion cast process；On the basis of the electric power loop constituted between single electrode series loop electrode, pass through increasing
Add bipolar electrode series loop, electroslag smelting casting turbine blade process is enable to be carried out continuously.
4. special according to the device of the rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming described in claim 1 or 3
Sign is, fixed electrode and a float electrode constitute power supply series loop, and a float electrode and another float electrode can be with
Power supply series loop is constituted, fixed electrode constitutes power supply series loop with heelpiece, and float electrode and heelpiece constitute series loop.
5. the device of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming described in accordance with the claim 3, feature
It is, the electrode in single electrode series circuit is float electrode, and the electrode in bipolar electrode series loop is fixed electrode or activity
Electrode, the electrode connected in a loop is one or more, and the power supply constituted between single electrode series loop electrode returns
The imbalance of bipolar electrode series loop consutrode founding is eliminated on road, to ensure the steady progress of founding.
6. the device of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming described in accordance with the claim 3, feature
It is, single electrode series circuit refers to single electrode and heelpiece and solidified that casting formed between liquid molten slag blanket connect back
Road, bipolar electrode series loop refer to the power supply series loop that two electrodes are formed between liquid molten slag blanket, exchange single electrode series
Circuit, bipolar electrode series loop combined power supply way refer to that single electrode series circuit and one or two or more sets of bipolar electrodes are connected
Circuit is combined more electric power loops power-up mode of composition.
7. the device of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming described in accordance with the claim 1, feature
It is, crystallizer is profile-followed crystallizer, consutrode is arranged in crystallizer cavity, float electrode is inside crystallizer constantly to knot
Brilliant device melting position supplements metal；Fixed electrode is profile-followed, fixed relative to crystallizer, and float electrode is in fusion-casting process
Removable, float electrode section is round, rectangular or other arbitrary shapes, and fixed electrode is whole or separate assembling,
The quantity of fixed electrode and float electrode is one or more according to cast shape feature.
8. the device of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming described in accordance with the claim 1, feature
It is, the electroslag smelting casting for hydro-generator runner blade blank, is fixed using one or more in crystallizer cavity
Electrode, before crystallizer group case, fixed electrode is fixed in crystallizer cavity, its mutual position is solid after each electrode installation is in place
Fixed, float electrode constantly carries out consutrode supplement by crystallizer internal channel to fusion-casting process.
9. the device of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming described in accordance with the claim 1, feature
It is, in the fusion-casting process comprising two layers of type chamber crystallized above, the crystallizer cavity cross section for being located at upper layer is with work
The part in moving electrode channel is profile-followed, is provided with the fixed electrode of float electrode and part, and founding carries out successively from the bottom to top.
10. the device of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming described in accordance with the claim 1, feature
It is, rotary wheel of water turbine three-dimension curved surface blade is tubular-turbine generator runner bucket, mixed-flow wheel generator runner blade
Piece or axial flow type hydro-turbo generator runner bucket.
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| CN201721733499.2U CN207770803U (en) | 2017-12-13 | 2017-12-13 | A kind of device of rotary wheel of water turbine three-dimension curved surface blade electroslag smelting casting straight forming |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604566A (en) * | 2019-01-18 | 2019-04-12 | 潍坊亚东冶金设备有限公司 | The sectionally assembled seperated special-shaped crystallizer of electroslag smelting casting blade multilayer |
| 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 |
-
2017
- 2017-12-13 CN CN201721733499.2U patent/CN207770803U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109604566A (en) * | 2019-01-18 | 2019-04-12 | 潍坊亚东冶金设备有限公司 | The sectionally assembled seperated special-shaped crystallizer of electroslag smelting casting blade multilayer |
| 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 |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |