CN106181015A - The U-shaped manufacturing process containing runner the first wall components of the attached tungsten of a kind of fusion reactor blanket - Google Patents
The U-shaped manufacturing process containing runner the first wall components of the attached tungsten of a kind of fusion reactor blanket Download PDFInfo
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- CN106181015A CN106181015A CN201610695503.4A CN201610695503A CN106181015A CN 106181015 A CN106181015 A CN 106181015A CN 201610695503 A CN201610695503 A CN 201610695503A CN 106181015 A CN106181015 A CN 106181015A
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Abstract
The present invention discloses a kind of U-shaped method of manufacturing technology containing runner the first wall components of attached tungsten being applicable to fusion reactor blanket, uses heat iso-hydrostatic diffusion welding technology to be combined with each other with the U-shaped steel containing runner by tungsten, and then realizes functionalization.Main technological steps main points are as follows: 1) prepare U-shaped steel tubing according to Design and Machining；2) band coating leaf is prepared in processing；3) outer jacket frock is prepared in processing；4) hot isostatic press welding；5) remove jacket, be processed into the first wall components of required size.The present invention is prepared and an overall thermal isostatic pressing process by U-shaped steel tubing and band coating leaf, achieve that foreign material, structure be complicated, the composite welding at multiple interface, and the parts that this processes is out do not have the performance weakening region of molten solder weld seam, overall structure is fine and close reliable, is particularly suitable for the preparation of fusion reactor blanket module attached tungsten the first wall components.
Description
Technical field
The present invention is a kind of U-shaped manufacturing process containing runner the first wall components of attached tungsten being applicable to fusion reactor blanket, belongs to
Metal Diffusion Welding field.
Background technology
Fusion reactor blanket is one of core component in fusion reactor, and it should realize, to fusion energy conversion output, also realizing
The propagation of tritium fuel, cladding feature local environment is extremely severe simultaneously, this just design and development to covering be proposed huge
Challenge.Wherein covering the first wall is directly facing plasma, and service condition is the harshest: bear high energy (14MeV) high flux
Fusion neutron irradiation, the corrosion etc. of particle bombardment, multiplication agent and the cooling mediums such as high energy high density α, D, this material to the first wall
Material and structural behaviour are proposed very high request.And mainly have two parts group according to existing design (such as accompanying drawing 1) the first wall components
Become: the U-shaped steel workpiece containing many group coolant flow channels and thin tungsten protection armor, ask in the face of two in the development process of these parts
Topic: 1) connection of tungsten and steel；2) in U-shaped steel workpiece prepared by the processing of many group coolant flow channels.
The mode that the connection of tungsten and steel currently mainly uses has vacuum plasma spray coating, soldering, chemical vapor deposition (CVD)
Deng.The tungsten coating that vacuum plasma spray coating obtains, bond strength is more weak and consistency is relatively low；The one that soldering is the most conventional is different
Planting material welding method, during welding, solder requires heat to more than fusing point, is easily caused matrix roughening, therefore needs matrix
Material carries out heat treatment, but during heat treatment, tungsten material easily occurs crackle under the effect of thermal stress；CVD tungsten coating there is also crystalline substance
The thick problem of grain.And tungsten/steel Hot Isostatic Pressing Diffusion belongs to Solid-phase welding, there is not metal molten, reasonably select welding
Parameter can obtain the fine and close workpiece reliably in interface, can alleviate tungsten/steel because of thermal coefficient of expansion not additionally by adding intermediate layer
With the excessive phenomenon of workpiece residual stress caused, therefore it is particularly suitable for fusion reactor the first wall tungsten/steel and connects.
On the other hand, to have large scale (long: 2-3m) and small size (inside 8 × 8mm) for the first wall components inner flow passage
Feature, and whole runner is U-shaped, and Conventional processing methods cannot manufacture at all, although and using casting method to make
Producing the workpiece of this shape, but be difficult to overcome segregation, shrinkage cavity in casting process, additionally cast member internal crystallization tissue cannot be expired
Foot military service performance requirement under such harsh conditions；If using normal melting welding method to prepare this workpiece to have very
Long, the weld seam of enormous amount, it is difficult to control quality, and the performance of commissure and substrate performance have larger difference, is difficult to meet
First wall operation demand.
Therefore, here it is proposed that a kind of overall thermal isostatic pressed welding method, thin by preparing U-shaped steel tubing and band coating
Leaf, it is achieved fusion reactor blanket the first wall components foreign material, structure are complicated, the composite welding at multiple interface.
Summary of the invention
Connect and a difficult problem for U-shaped runner processing to solve tungsten in fusion reactor blanket the first wall components preparation process/steel, this
Invention proposes the U-shaped process containing runner the first wall components entirety heat iso-hydrostatic diffusion welding of the attached tungsten of a kind of fusion reactor blanket.
To achieve these goals, the process program of the present invention is as follows:
The U-shaped manufacturing process containing runner the first wall components of the attached tungsten of a kind of fusion reactor blanket, it is characterised in that comprise the following steps:
A), processing each element according to design requirement, described element includes multiple U-tube material steel workpiece and liner plate, multiple U
Type tubing steel workpiece can stack the U-shaped workpiece group of composition, and liner plate is for the inside and outside up and down certain thickness lining of this workpiece group
Plate, the shape of each liner plate is consistent with the shape of this U-shaped workpiece group, is U-shaped, wherein, needs outside U-shaped outer side plate arc section
The straight vertical bar shape with one fixed width of continuous distribution to be processed into, it is ensured that outside leaf and the outer side plate of U-shaped workpiece group
The close contact of arc section, the surface of each element also needs to carry out polish, and the surface roughness Ra after machining is less than 1.6 μm,
It is beneficial to follow-up hot isostatic press welding；
B), multiple band coating leaf is prepared: the continuous print being processed into outside leaf width and U-shaped outer side plate arc section has one
The width correspondence of the straight vertical bar shape of fixed width degree is identical, and meanwhile, the one side in leaf is electroplated or physical vapour deposition (PVD)
(PVD) method coating medium transition zone is as junction to be welded, improves the interface connectivity of coating leaf and U-shaped outer liner steel workpiece
Energy；
C), outer jacket frock is prepared in processing: multiple U-tube material steel workpieces stacking is loaded in jacket and forms U-shaped workpiece group, by upper
Lower inside and outside U-shaped liner plate opsition dependent is placed into around U-shaped workpiece group, and by flat segments outside outer for multiple band coating leaf correspondences liner plate
And the vertical riglet shape of arc section continuous print one fixed width is sequentially placed in jacket, wherein, the outer liner plate in coating face is put
Put, complete the placement in jacket of each element and form an entirety, then this entirety is carried out soldering and sealing heating degasification and obtains sealing
Jacket tool part, it is desirable in jacket, vacuum is less than 1Pa, prevent gas enter oxidation workpiece；
D), hot isostatic press welding: step (c) jacket tool part entirety being put in hot isostatic press and weld, high temperature insostatic pressing (HIP) is joined
Number is as follows: temperature 750-980 DEG C, pressure 100-300Mpa, temperature retention time 1.5-6h；
E), remove jacket, process according to design size.
The medium that described medium transition zone is selected is the one in Ni, Cr, V or Ti.
High temperature insostatic pressing (HIP) parameter is: temperature 750-800 DEG C, pressure 100-130Mpa, temperature retention time 3-4.5h.
After whole high temperature insostatic pressing (HIP) is wrapped in soldering and sealing, the inner flow passage of each U-shaped steel tubing workpiece and air communicate, it is ensured that
During hot isostatic press welding, these runners have the bulbs of pressure to surrounding, and ensure the contact of each element after high temperature insostatic pressing (HIP)
Interface all realizes good welds.
Beneficial effects of the present invention is as follows:
The present invention by the outer jacket tool part heat iso-hydrostatic diffusion welding being opposite in vacuum canning, can disposably realize tungsten/
Steel welding and the preparation containing U-shaped complicated runner the first wall components, it is achieved that foreign material, structure are complicated, multiple interface compound
Welding, had both solved a processing difficult problem for U-shaped small size runner, and this runner is also the high pressure air flue of high temperature insostatic pressing (HIP) simultaneously, Qi Zhongxiang
Than the tungsten/steel connected mode that presently, there are, such as vacuum plasma spray coating, soldering advantage are to there is not metal molten, belong to solid
Being connected, the workpiece bonding strength obtained is high, dependable performance, and little to weld interface performance impact, close to matrix material
Can, conservative control welding temperature parameter can be without subsequent heat treatment；Additionally compare other runner preparation methoies, such as melting
Connecing, cast and prepare band runner flat board+be bent into U-shaped plate method, this process does not haves fusing segregation, shrinkage cavity and property
The problems such as energy reduction, the parts processed do not have the performance weakening region of molten solder weld seam, and overall structure is fine and close reliable, simultaneously
Also there is the advantages such as change of shape is little in runner, be extremely suitable for that there is complex multilayer and the preparation of complicated flow path features,
The especially preparation of the attached tungsten of fusion reactor blanket module the first wall components.
Accompanying drawing explanation
The water-cooled ceramic cladding structural representation of Fig. 1 China fusion engineering experiment heap, wherein, is attached tungsten region in 1
Fig. 2 one-piece machine member faces structural representation；Wherein: 1 is U-shaped upper liner plate, 2 is single U-tube material steel workpiece, and 3 is U-shaped
Outer liner plate, 4 is U-shaped liner version, and 5 is U-shaped lower liner plate.
Detailed description of the invention
The U-shaped manufacturing process containing runner the first wall components of the attached tungsten of a kind of fusion reactor blanket, it is characterised in that include following step
Rapid:
The U-shaped manufacturing process containing runner the first wall components of the attached tungsten of a kind of fusion reactor blanket, it is characterised in that comprise the following steps:
A), processing each element according to design requirement, described element includes multiple U-tube material steel workpiece and liner plate, multiple U
Type tubing steel workpiece can stack the U-shaped workpiece group of composition, and liner plate is for the inside and outside up and down certain thickness lining of this workpiece group
Plate, the shape of each liner plate is consistent with the shape of this U-shaped workpiece group, is U-shaped, wherein, needs outside U-shaped outer side plate arc section
The straight vertical bar shape with one fixed width of continuous distribution to be processed into, it is ensured that outside leaf and the outer side plate of U-shaped workpiece group
The close contact of arc section, the surface of each element also needs to carry out polish, and the surface roughness Ra after machining is less than 1.6 μm,
It is beneficial to follow-up hot isostatic press welding；
B), multiple band coating leaf is prepared: the continuous print being processed into outside leaf width and U-shaped outer side plate arc section has one
The width correspondence of the straight vertical bar shape of fixed width degree is identical, and meanwhile, the one side in leaf is electroplated or physical vapour deposition (PVD)
(PVD) method coating medium transition zone is as junction to be welded, improves the interface connectivity of coating leaf and U-shaped outer liner steel workpiece
Energy；
C), outer jacket frock is prepared in processing: multiple U-tube material steel workpieces stacking is loaded in jacket and forms U-shaped workpiece group, by upper
Lower inside and outside U-shaped liner plate opsition dependent is placed into around U-shaped workpiece group, and by flat segments outside outer for multiple band coating leaf correspondences liner plate
And the vertical riglet shape of arc section continuous print one fixed width is sequentially placed in jacket, wherein, the outer liner plate in coating face is put
Put, complete the placement in jacket of each element and form an entirety, then this entirety is carried out soldering and sealing heating degasification and obtains sealing
Jacket tool part, it is desirable in jacket, vacuum is less than 1Pa, prevent gas enter oxidation workpiece；
D), hot isostatic press welding: step (c) jacket tool part entirety being put in hot isostatic press and weld, high temperature insostatic pressing (HIP) is joined
Number is as follows: temperature 750-980 DEG C, pressure 100-300Mpa, temperature retention time 1.5-6h；
E), remove jacket, process according to design size.
The medium that described medium transition zone is selected is the one in Ni, Cr, V or Ti.
High temperature insostatic pressing (HIP) parameter is: temperature 750-800 DEG C, pressure 100-130Mpa, temperature retention time 3-4.5h.
After whole high temperature insostatic pressing (HIP) is wrapped in soldering and sealing, the inner flow passage of each U-shaped steel tubing workpiece and air communicate, it is ensured that
During hot isostatic press welding, these runners have the bulbs of pressure to surrounding, and ensure the contact of each element after high temperature insostatic pressing (HIP)
Interface all realizes good welds.
Now it is prepared as with China's fusion engineering test reactor (CFETR) water-cooled ceramic cladding (such as Fig. 1) the first wall components
Example carries out further description.
A), multiple low activation U-tube material steel workpiece is processed according to design requirement, described U-tube material steel workpiece is 8 ×
8mm, the U-tube material of wall thickness 1.5mm, multiple U-tube material steel workpieces can stack the U-shaped workpiece group of composition, and U-shaped workpiece group is upper and lower
Inside and outside be equipped with certain thickness shape liner plate, geomery and U-shaped workpiece group keep consistent, the most U-shaped, and overall structure body is as schemed
Shown in 2, wherein 1 is U-shaped upper liner plate, and 2 is single U-tube material steel workpiece, and 3 is U-shaped outer liner plate, and 4 is U-shaped liner version, and 5 is U-shaped
Lower liner plate, is processed into the straight vertical bar of the wide 12mm of continuous distribution outside the arc section of described U-shaped outer liner plate 3, each workpiece
Surface needs to carry out polish, and the surface roughness Ra after machining is less than 1.6 μm, is beneficial to follow-up hot isostatic press welding；
B), processing prepare band coating leaf, selected leaf width 12mm, long 20-60mm, at the plating of leaf one side or thing
The transition zones such as physical vapor deposition (PVD) method coating Ni, Cr, V or Ti are as junction to be welded, it is therefore an objective to improve the boundary of tungsten and steel
Face switching performance；
C), multiple U-tube material steel workpieces stacking load and jacket is formed U-shaped workpiece group, will the most inside and outside U-shaped liner plate opsition dependent
It is placed into around U-shaped workpiece group, and it is continuous that multiple band coating leaf are correspondingly placed into flat segments and arc section outside U-shaped liner plate
Being sequentially placed in jacket at the straight vertical bar of distribution, wherein, the outer liner plate in coating face is placed, and completes each element in jacket
Placement formed an entirety, then this entirety is carried out soldering and sealing heating degasification obtain seal jacket tool part, it is desirable to vacuum
Degree is less than 1Pa, prevents gas from entering oxidation workpiece；
D), by the entirety that step (c) is obtained putting in hot isostatic press and weld, high temperature insostatic pressing (HIP) parameter is: temperature 750-980
DEG C, pressure 100-300Mpa, temperature retention time 1.5-6h, wherein each U-shaped steel tubing after whole high temperature insostatic pressing (HIP) is wrapped in soldering and sealing
Inner flow passage and the air of workpiece communicate, it is ensured that during hot isostatic press welding, these runners have the bulbs of pressure to surrounding,
And ensure that the contact interface of each element all realizes good welds after high temperature insostatic pressing (HIP).
Further as the preferred version of the present embodiment, high temperature insostatic pressing (HIP) parameter is: temperature 750-800 DEG C, pressure 100-
130Mpa, temperature retention time 3-4.5h.
Tungsten/steel is solved in prior art because of the bigger heat of the bigger generation of thermal expansion coefficient difference by this kind of process
Stress thus cause the poor problem of tungsten/steel switching performance；In solving covering the first wall components, complicated runner is once simultaneously
A property machine-shaping difficult problem；And this heat and other static pressuring processes also ensure that the performance of low activation steel, be a kind of comparison excellent first
Wall components prepares processing technique.
The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included within the scope of the present invention.
Claims (4)
1. the U-shaped manufacturing process containing runner the first wall components of the attached tungsten of fusion reactor blanket, it is characterised in that include following step
Rapid:
A), processing each element according to design requirement, described element includes multiple U-tube material steel workpiece and liner plate, multiple U
Type tubing steel workpiece can stack the U-shaped workpiece group of composition, and liner plate is for the inside and outside up and down certain thickness lining of this workpiece group
Plate, the shape of each liner plate is consistent with the shape of this U-shaped workpiece group, is U-shaped, wherein, needs outside U-shaped outer side plate arc section
The straight vertical bar with one fixed width of continuous distribution to be processed into, it is ensured that leaf and the outer side plate outer arc of U-shaped workpiece group
The close contact of section, the surface of each element also needs to carry out polish, and the surface roughness Ra after machining is less than 1.6 μm, in order to
In follow-up hot isostatic press welding；
B), multiple band coating leaf is prepared: the continuous print being processed into outside leaf width and U-shaped outer side plate arc section has one
The width correspondence of the straight vertical bar of fixed width degree is identical, and meanwhile, the one side in leaf is electroplated or physical vapor deposition (PVD) side
Method coating medium transition zone, as junction to be welded, improves the interface switching performance of coating leaf and U-shaped outer liner steel workpiece；
C), outer jacket frock is prepared in processing: multiple U-tube material steel workpieces stacking is loaded in jacket and forms U-shaped workpiece group, by upper
Lower inside and outside U-shaped liner plate opsition dependent is placed into around U-shaped workpiece group, and by flat segments outside outer for multiple band coating leaf correspondences liner plate
And the vertical riglet shape of arc section continuous print one fixed width is sequentially placed in jacket, wherein, the outer liner plate in coating face is put
Put, complete the placement in jacket of each element and form an entirety, then this entirety is carried out soldering and sealing heating degasification and obtains sealing
Jacket tool part, it is desirable in jacket, vacuum is less than 1Pa, prevent gas enter oxidation workpiece；
D), hot isostatic press welding: step (c) jacket tool part entirety being put in hot isostatic press and weld, high temperature insostatic pressing (HIP) is joined
Number is as follows: temperature 750-980 DEG C, pressure 100-300Mpa, temperature retention time 1.5-6h；
E), remove jacket, process according to design size.
The U-shaped manufacturing process containing runner the first wall components of the attached tungsten of fusion reactor blanket the most according to claim 1, its feature exists
In: the medium that described medium transition zone is selected is the one in Ni, Cr, V or Ti.
The U-shaped manufacturing process containing runner the first wall components of the attached tungsten of fusion reactor blanket the most according to claim 1, its feature exists
In: high temperature insostatic pressing (HIP) parameter is: temperature 750-800 DEG C, pressure 100-130Mpa, temperature retention time 3-4.5h.
The U-shaped manufacturing process containing runner the first wall components of the attached tungsten of fusion reactor blanket the most according to claim 1, its feature exists
After: whole high temperature insostatic pressing (HIP) is wrapped in soldering and sealing, inner flow passage and the air of each U-shaped steel tubing workpiece communicates, it is ensured that in heat etc.
In static pressure welding process, these runners have the bulbs of pressure to surrounding, and ensure that the contact interface of each element is equal after high temperature insostatic pressing (HIP)
Realize good welds.
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Cited By (5)
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| CN107945886A (en) * | 2017-12-20 | 2018-04-20 | 扬州大学 | A kind of fusion reactor novel clad structure |
| CN108788436A (en) * | 2018-06-05 | 2018-11-13 | 中国科学院合肥物质科学研究院 | A kind of technique connecting fusion reactor material tungsten and steel using the diffusion of hydrogen metal is set |
| CN110773955A (en) * | 2019-10-18 | 2020-02-11 | 合肥聚能电物理高技术开发有限公司 | Connecting process suitable for fusion reactor cladding containing complex water-cooling runner parts |
| CN111347147A (en) * | 2018-12-24 | 2020-06-30 | 核工业西南物理研究院 | Hot isostatic pressing connection method of tungsten and heat sink material |
| CN112448118A (en) * | 2020-11-16 | 2021-03-05 | 中国科学院合肥物质科学研究院 | Back plate water cooling device suitable for ultrahigh vacuum and strong radiation conditions and processing method |
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| CN112448118A (en) * | 2020-11-16 | 2021-03-05 | 中国科学院合肥物质科学研究院 | Back plate water cooling device suitable for ultrahigh vacuum and strong radiation conditions and processing method |
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