CN107201537B - A kind of of the same race or different alloys connection methods - Google Patents
A kind of of the same race or different alloys connection methods Download PDFInfo
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- CN107201537B CN107201537B CN201710357714.1A CN201710357714A CN107201537B CN 107201537 B CN107201537 B CN 107201537B CN 201710357714 A CN201710357714 A CN 201710357714A CN 107201537 B CN107201537 B CN 107201537B
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- connection
- fused salt
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- same race
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/66—Electroplating: Baths therefor from melts
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
Abstract
Connection method between a kind of of the same race or different alloys belongs to Material Joining Technology field.Specific step is as follows: 1. pretreatment before connection: first according to specific environment and connecting portion, connected piece and W material being cut according to required shape, after polishing, polishing, oil removing, with Ni by connected piece connecting portion bundled fixed.2. implementing connection procedure: being put into Na with Pt connection cathode connected pieces and anode W using pulse plating power2WO4、WO3In the fused salt of fusing, implement plate bonding link in the environment of 800~900 DEG C, electrodeposition time is determined with specific reference to the size and connecting portion of connected piece, generally higher than 30h.3. later processing stage: taking out the sample connected from electrolyte, NaOH aqueous solution, acetone and deionized water is respectively adopted and carefully washes off the fused salt of attachment, is dried up after washing with cold wind.Present invention process flow operations are simple, compare electric welding connection, connecting portion more even compact, flawless, join domain surface oxygen content is low.
Description
Technical field
The invention belongs to field of electroplating, it is related to connecting the connection method of two kinds of metals, it is especially a kind of to be used for nuclear fusion stack
Plasma facing material, the interconnection technique between of the same race or dissimilar metal.
Background technique
Copper and its alloy are because of the description of materials of selection and the difference of structure type, mainly using molten during processing
The method of weldering, Pressure Welding and soldering connects to realize.The characteristics of due to copper and its alloy thermophysical property, it is normal melting welding and
Soldering is easy to appear following main problem: (1) welded post welding distortion is big.(2) weld seam and fusion area are also easy to produce stomata.
(3) area weld seam Huo Jinfeng is also easy to produce crackle.It is to sum up told: connecting copper with conventional connection methods and copper alloy, postwelding crystal grain become larger,
Alloy is burnt when welding, and the eutectiferous presence of brittleness and the presence of various defects result in weld metal zone plasticity and toughness in crystal boundary
It significantly reduces.The mechanical performance of its welding point cannot be fully guaranteed, and welding cost is high.
The present invention uses fused salt electro-deposition techniques, and coating is linked together copper alloy using material W, simple process, at
This is low, and practicability is stronger.Especially in aerospace and nuclear power field, the connection of copper alloy lesser for the bodily form has well
Application prospect.And material of the W as high atomic number, the candidate materials such as Be, C, B relative to low atomic number have Gao Rong
Point, low sputtering etching rate, low tritium are detained and high the advantages that sputtering threshold values certainly, is chosen as in PFC (towards plasma source components)
Heat sink material, thus on heat sink material copper alloy with W coating connection have important references meaning to the development of nuclear fusion material.
In this context, it is expanded, such connection method is not limited between a kind of material, the dissimilar materials such as steel and molybdenum
Between, if can in this molten salt system electro-deposition W coating, can be carried out the method connection, range is very wide.
Patent CN 101494322A discloses a kind of tungsten copper connection method, first by copper metal in 1150~1200 DEG C of vacuum
Cladding is on tungsten waved surface, then stacks and be assembled into weldment, 850~900 DEG C of pressure diffusion weldering connections in vacuum chamber.This method
It avoids and is welded using previous solder or middle layer, but the party must use copper as the connection material of transition between connector
Material, opposite to have limitation, the position entirely connected is confined to the contact area in face and face, can not realize and wrap up join domain
The function of getting up and upper 1000 DEG C of high temperature melting and coating process, also there is very high requirement to equipment.
Summary of the invention
The present invention to be solved it is a key issue that connect the alloy materials such as copper, steel, molybdenum by way of with pulse plating,
It makes up and connects copper and alloy material with the mode of welding, under the problem and particular surroundings of welding position performance difference, be not available
It is welded to connect the methods of copper, molybdenum part.
The technical solution of the present invention is as follows:
A kind of connection method between of the same race or different alloys part:
(1) pre-connection of connector
At least two pieces of of the same race or different alloys being attached will be needed to remove after being processed into required shape using lye
The grease of matrix surface polishes and obtains smooth flawless surface after polishing, and the alloy after polishing is clear through deionized water
It washes, ultrasonic wave washes of absolute alcohol, then with being dried after acetone ultrasonic cleaning；According to required connecting portion by the alloy Ni
Silk is fixed, as cathode material.
(2) anode prepares
The grease for removing matrix surface after pure W plate is processed using lye, successively uses 240#, 500#, 800#,
The polishing of 1200#, 2000# sand paper, is then mechanically polished using the agent of 2.5dum diamond polishing, and smooth flawless surface is obtained,
Sample after polishing is cleaned through deionized water, ultrasonic wave washes of absolute alcohol, then with drying after acetone ultrasonic cleaning, as sun
It is extremely spare.
(3) preparation of fused salt is electroplated
Respectively to Na2WO4And WO3Drying and dewatering processing is carried out, after preset ratio weighing, grinds and is uniformly mixed conduct
Fused salt is electroplated, it is spare.
(4) implement connection procedure
The plating fused salt is put into crucible, high temperature resistance furnace is put into, is increased to the heating rate of 5 DEG C/min specified
800~900 DEG C of temperature, constant temperature 60min makes the abundant melting of fused salt, and ingredient is uniform；The cathode and anode are connected to Pt
It on electroplating power supply, is put into the plating fused salt of melting, according to the alloy species of connector, the thickness of required articulamentum, is adjusted to
Parameter preset powers on, and starts to be electroplated.
(5) later processing stage: after electro-deposition, taking out sample from electrolyte, and 10mol%NaOH water is respectively adopted
Solution, acetone and deionized water carefully wash off the ionic liquid of attachment, are dried up after washing with cold wind.
Further, it may be dissimilar material that connected piece, which can be same material, such as: copper and copper, copper and steel, steel
With steel, steel and molybdenum, zirconium and steel etc., as long as tungsten coating can be electroplated out in this molten salt system, such method can be passed through
It is attached.
Further, the cutting profile for being connected material can be blocky or plate and strip etc., can be according to specific
Actual demand selected.
Further, it will be wrapped up by pure W coating around connector, coating will be greater than 260 μm with column crystals growth, thickness,
Two pieces becomes an entirety, naturally it is also possible to be the connection of three entirety.
The present invention compared with prior art possessed by advantage:
(1) present invention process process is simple, and strong operability is high-efficient.
(2) present invention does not allow more to become connector relative to component is welded to connect while keeping original component capabilities
Shape maintains original geomery of component.
(3) connecting portion coating of the present invention, surface even compact, flawless, the porosity are low.
(4) connector is fabricated to the shape of needs, according to the complex situations being likely to occur in actual use by the present invention
Implement plating, strong flexibility in the position of connecting component.
(5) material that the present invention connects is a variety of, can be of the same race or xenogenesis, and fused salt prepares simple reusable, cost
It is low.
(6) present invention is realized with tungsten coating and is connected, and coating coats entire connecting material, and connector is made to have good high temperature
Intensity has good corrosion resistance to molten alkali metal and steam.
Detailed description of the invention:
Fig. 1 is junction section SEM
Specific embodiment:
Example 1: copper billet body connection
1: using having a size of 15mm × 10mm × 3mm CuCrZr block as working electrode, quantity 2,15mm ×
The pure W block (purity 99.95%) of 10mm × 5mm carries out plate bonding as to electrode, and two kinds of materials are all provided with the small of Φ 1mm
Hole facilitates connecting wire.The sample of well cutting is first carried out to an oil removing, with acetone ultrasound 30min, then uses deionized water
It is dried up after cleaning.CuCrZr block successively uses 240#, 500#, 800#, 1200#, 2000# sand paper polishing, then using 2.5dum gold
The mechanical polishing of hard rock polishing agent, obtains smooth flawless surface, and the sample after polishing is cleaned through deionized water, uses Na2CO3=
2g, Na3PO4.12H2O=2g, Na2SiO3=0.5g pours into 500mL beaker, and configuration removes oil solution, is heated to through magnetic stirring apparatus
After 50 DEG C, CuCrZr material is put into solution, after oil removing 5min, after taking out use ultrasonic wave washes of absolute alcohol, then spend from
It is dried after sub- water ultrasound.W is after 240# polishes, with alcohol ultrasound 30min, then with drying up after deionized water ultrasound 30min.It connects
Get off and pass through Φ 1mm aperture with Pt, two blocks of CuCrZr alloys are connected, with Ni by one circle of lower part binding, plays fixed work
With.W material Φ 1mm aperture is passed through with Pt simultaneously, it is spare after pack.
2: according to Na2WO4:WO3=2.5~3.5:0.5~1.5 (molar ratio) weigh proportion, by load weighted Na2WO4=
791.48g is put into crucible, is placed into and is carried out drying and dewatering in heating equipment Muffle furnace, and temperature is 450~550 DEG C, and the time is
20~28h.Equally by load weighted WO3=277.44g is put into crucible, places into heating equipment Muffle furnace that carry out drying de-
Water, temperature are 150~250 DEG C, and the time is 10~16h.By the Na of drying2WO4And WO3It grinds and obtains electricity after mixing and sink
The required salt of product, packs and waits the use of next step.
3: selection crucible is alumina crucible 80mm × 80mm × 60mm, is heated using crucible electrical resistance furnace.It will first mix
Close uniform Na2WO4=791.48g and WO3=277.44g is put into crucible, then crucible is put into resistance furnace, with 5 DEG C/min
Speed be heated to 900 DEG C, start to carry out electro-deposition after keeping the temperature 60min.Electro-deposition uses Double-pulse Plating Power Source, current density
For 20mAcm-2(empirical parameter), electrodeposition time 50h, frequency 1000Z, duty ratio 30%.After electro-deposition, by sample
Product take out from fused salt, are cooled down in air, are then successively cleaned with 10mol%NaOH solution and deionized water,
Each 30min, to remove the fused salt and impurity that are attached to coating surface.
Example 2: copper sheet material connection
Example 2 is unlike example 1: when CuCrZr alloy material area expansion 100mm × 100mm plate, at this time
In first step processing, it is finished to electrochemical process polishing.The crucible that next step uses when being electroplated is silicon carbide crucible, size
160mm × 160mm × 200mm before being put into fused salt, needs to connect quartz holder at this time since CuCrZr alloy is larger heavier,
(the double-deck quartz holder, surrounding are quartz column, are hollow design) is by it is anticipated that the position of connection is fixed on quartz with Ni
On bracket, while W is also secured on quartz holder, is advisable above CuCrZr alloy with W.Other techniques are identical as example 1.
Example 3: bloom body connection
Example 3 is identical as 1 process of example, only by connected piece, changes Steel material into.In step 1, the oil removing of steel is molten
Liquid are as follows: NaOH=5g, Na2CO3=5g, Na3PO4.12H2O=5g, Na2SiO3=1g, OP emulsifier 0.5ml pour into 500ml burning
In cup.In step 3, electroplating temperature is transferred to 850 DEG C of implementation plating, time 60h.
(1) finally, it should also be noted that the above enumerated are only specific embodiments of the present invention son, it is clear that the present invention
It is not limited to above embodiment, acceptable there are many deform such as: copper, steel, molybdenum etc. are with the shapes such as block, plate, stick, piece, ring part
Or whole plating W coatings, as being protection scope of the present invention for the purpose of connection.Those skilled in the art can be from
All deformations that present disclosure directly exports or associates, are considered as protection scope of the present invention.
Claims (3)
1. the connection method between a kind of of the same race or different alloys, it is characterised in that by the way of fused salt electro-deposition by two pieces it
Between connect, coating will wrap up and connection alloy；Steps are as follows for method and process:
(1) pre-connection of connector
At least two pieces of of the same race or different alloys that needs are attached after being processed into required shape, remove matrix using lye
The grease on surface polishes and obtains smooth flawless surface after polishing, and the alloy after polishing is cleaned through deionized water, surpasses
Sound wave washes of absolute alcohol, then with being dried after acetone ultrasonic cleaning；According to required connecting portion by the alloy with Ni into
Row is fixed, as cathode material；
(2) anode prepares
The grease for removing matrix surface after pure W plate is processed using lye, successively uses 240#, 500#, 800#, 1200#,
The polishing of 2000# sand paper obtains smooth flawless surface, polishing then using 2.5 μm of diamond polishing agent mechanical polishinges of partial size
Sample afterwards is cleaned through deionized water, ultrasonic wave washes of absolute alcohol, then with drying after acetone ultrasonic cleaning, standby as anode
With；
(3) preparation of fused salt is electroplated
Respectively to Na2WO4And WO3Drying and dewatering processing is carried out, after preset ratio weighing, grinds and is uniformly mixed as plating
Fused salt, it is spare；
(4) implement connection procedure
The plating fused salt is put into crucible, high temperature resistance furnace is put into, assigned temperature is increased to the heating rate of 5 DEG C/min
800~900 DEG C, constant temperature 60min makes the abundant melting of fused salt, and ingredient is uniform；The cathode and anode are connected to plating with Pt
It on power supply, is put into the plating fused salt of melting, according to the alloy species of connector, the thickness of required articulamentum, is adjusted to default
Parameter powers on, and starts to be electroplated；It will be wrapped up by pure W coating around connector, coating will be greater than with column crystals growth, thickness
260 μm, two connectors or three connectors become an integrated connection
(5) later processing stage: after electro-deposition, sample is taken out from electrolyte, it is water-soluble that 10mol%NaOH is respectively adopted
Liquid, acetone and deionized water carefully wash off the fused salt of attachment, are dried up after washing with cold wind.
2. the connection method between described in accordance with the claim 1 of the same race or different alloys, it is characterised in that described in step (1)
Connected piece is same material or is dissimilar material, as long as in Na2WO4And WO3In molten salt system, tungsten coating can be electroplated out,
It can be transferred through claim 1 the method to be attached.
3. the connection method between described in accordance with the claim 1 of the same race or different alloys, it is characterised in that step (1) described quilt
The cutting profile of connecting material is blocky or plate and strip, is selected according to specific actual demand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710357714.1A CN107201537B (en) | 2017-05-19 | 2017-05-19 | A kind of of the same race or different alloys connection methods |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710357714.1A CN107201537B (en) | 2017-05-19 | 2017-05-19 | A kind of of the same race or different alloys connection methods |
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| CN107201537A CN107201537A (en) | 2017-09-26 |
| CN107201537B true CN107201537B (en) | 2019-11-12 |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002743A (en) * | 2010-12-01 | 2011-04-06 | 北京科技大学 | Preparation method for electroplating thick tungsten coating on pure copper or copper alloy substrate with molten salt |
| CN106048667A (en) * | 2016-07-19 | 2016-10-26 | 哈尔滨工业大学深圳研究生院 | Connecting method based on electroplating and applied to same metal or dissimilar metal |
-
2017
- 2017-05-19 CN CN201710357714.1A patent/CN107201537B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102002743A (en) * | 2010-12-01 | 2011-04-06 | 北京科技大学 | Preparation method for electroplating thick tungsten coating on pure copper or copper alloy substrate with molten salt |
| CN106048667A (en) * | 2016-07-19 | 2016-10-26 | 哈尔滨工业大学深圳研究生院 | Connecting method based on electroplating and applied to same metal or dissimilar metal |
Non-Patent Citations (2)
| Title |
|---|
| 45号钢、不锈钢、铝合金的电镀连接;张友寿等;《材料导报》;19990228;第13卷(第1期);第60-62页 * |
| 特种材料的电化学连接技术;张友寿等;《材料导报》;20000731;第14卷(第7期);第22-24页 * |
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| CN107201537A (en) | 2017-09-26 |
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