CN104439678B - A kind of method of the steel Diffusion Weldings of CLF 1 - Google Patents
A kind of method of the steel Diffusion Weldings of CLF 1 Download PDFInfo
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- CN104439678B CN104439678B CN201410679694.6A CN201410679694A CN104439678B CN 104439678 B CN104439678 B CN 104439678B CN 201410679694 A CN201410679694 A CN 201410679694A CN 104439678 B CN104439678 B CN 104439678B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/02—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a press ; Diffusion bonding
- B23K20/023—Thermo-compression bonding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
- B23K20/24—Preliminary treatment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a kind of method of the steel Diffusion Weldings of CLF 1, comprise the following steps：Step 1: the surface roughness at the interface to be spread of two blocks of steel plates of CLF 1 to be welded is machined into no more than 0.4 μm；Step 2: by two pieces of cleaning steel plate oil removings of CLF 1 to be welded, being put under vacuum environment and being protected immediately after；Step 3: coating stops solder flux on the interface to be spread of two blocks of steel plates of CLF 1 to be welded, then two blocks of steel plates of CLF 1 to be welded are assembled, the interracial contact to be spread of the latter two blocks steel plates of CLF 1 to be welded is completed；Step 4: two blocks of steel plates of CLF 1 to be welded are diffused into welding in vacuum diffusion welding machine；Step 5: the weldment after Diffusion Welding is carried out into solution treatment, room temperature, then temper are down to after solution treatment, room temperature is finally down to and obtains weldment finished product.Process of the present invention is simple, is easy to implement, and feasibility and repeatability are good, can improve the impact flexibility that the steel of CLF 1 spreads interface.
Description
Technical field
The present invention relates to welding technology field, specifically a kind of method of CLF-1 steel Diffusion Welding.
Background technology
CLF-1 steel is low activation ferrite/martensite steel（RAFM）, it is exclusively used in solid-state multiplication agent experiment cladding modular
（HC-SB TBM）Development.At present, the basic conception design work of solid-state multiplication agent experiment cladding modular has been completed, and is portion
Divide the reasonability of checking full size model structural design and the feasibility of development technology, need specific aim to carry out experiment covering（TBM）
The development work of module.Need largely to use vacuum diffusion welding, electron-bombardment welding etc. to connect skill in TBM module development processes
Art, especially diffusion in vacuum interconnection technique play the most key central role in TBM module development processes, and specific aim is opened
Opening up development of the CLF-1 steel diffusion in vacuum Joining Technology research to TBM modules has important basic meaning.
Its metallographic, drawing stretch functional after current CLF-1 steel diffusion in vacuum connection, but its diffusion interface impact flexibility is inclined
It is low, only 27.8% or so of CLF-1 steel mother metal.Because CLF-1 steel diffusion in vacuum Joining Technologies are in solid-state multiplication agent experiment covering
Module plays key player in developing, if not can solve the problem of CLF-1 steel diffusion interface impact flexibility is relatively low,
CLF-1 steel diffusion interface impact flexibility can not be effectively improved, the development of solid-state multiplication agent experiment cladding modular will be directly affected.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of method of CLF-1 steel Diffusion Welding, its
Process is simple, is easy to implement, cost is low, and can improve CLF-1 steel using this method spreads the impact flexibility at interface, and then is avoided that
The development of solid-state multiplication agent experiment cladding modular is influenceed because CLF-1 steel diffusion interface impact flexibility is relatively low.
The present invention, which solves the above problems, to be achieved through the following technical solutions：A kind of method of CLF-1 steel Diffusion Welding,
Comprise the following steps：
Step 1: the surface roughness at the interface to be spread of two blocks of CLF-1 steel plates to be welded is machined into no more than 0.4 μm；
Step 2: by two pieces of CLF-1 cleaning steel plates oil removings to be welded, being put under vacuum environment and being protected immediately after；
Step 3: coating stops solder flux on the interface to be spread of two blocks of CLF-1 steel plates to be welded, then by two pieces of CLF- to be welded
1 steel plate is assembled on the workbench of vacuum diffusion welding machine, and the interface to be spread for being completed latter two blocks CLF-1 steel plates to be welded connects
Touch；
Step 4: two blocks of CLF-1 steel plates to be welded are diffused into welding in vacuum diffusion welding machine；
Step 5: the weldment after Diffusion Welding is carried out into solution treatment, room temperature is down to after solution treatment, then be tempered place
Reason, is finally down to room temperature and obtains weldment finished product.
Further, the roughness processing at the interface to be spread of CLF-1 steel plates to be welded uses mechanical ball in the step one
Mill and the mode of grinding are processed, or are processed by the way of electrochemical polish.
Further, the cleaning of CLF-1 steel plates to be welded is cleaned using alkali cleaning, pickling, ultrasonic wave successively in the step 2
And the mode of dehydration of alcohol is cleaned.In this way, removing CLF-1 steel plates to be welded by alkali cleaning and pickling first during present invention application
Oxide skin, oxide-film, greasy dirt, the dust on surface etc., then clean oxide skin, the oxygen for further washing residual by ultrasonic wave
Change film, greasy dirt, dust etc., last dehydration, oil removing, decontamination and surface cleaning is carried out finally by dehydration of alcohol.
There is the phenomenon of excessive corrosion in CLF-1 steel plates to be welded during in order to avoid pickling, further, the acid solution during pickling
Formula and the percent by volume of each component be：HF:HCl:HNO3:H2O=2:3:15:19。
Further, two blocks of CLF-1 steel plates to be welded are assembled using assembling mechanism in the step 3, the kludge
Structure holds column including seaming chuck, push-down head and many, the following step including carrying out successively during CLF-1 steel plates assembling to be welded to two pieces
Suddenly：Push-down head is placed on the workbench of vacuum diffusion welding machine, one block of CLF-1 steel plate to be welded for being coated with only solder flux is put
Put on push-down head and make its interface to be spread upward, by another piece be coated with only CLF-1 steel plates to be welded of solder flux treat welding end
Down and be placed on the CLF-1 steel plates to be welded of interface to be spread upward, holding column by many is evenly distributed on CLF-1 to be welded
The surrounding of steel plate is simultaneously placed on push-down head, is finally placed on seaming chuck and is held on column.Wherein, seaming chuck lower surface and top
CLF-1 steel plates upper surface to be welded contact, seaming chuck, push-down head primarily serve apply and succession diffusion pressure effect, hold vertical
Post, which is primarily served, is supported spacing effect to spacing between seaming chuck, push-down head, between preventing between seaming chuck and push-down head
Fail away from diffusion is caused less than setting value.On the one hand the uniform of diffusion pressure can preferably be realized using this kind of assembling mode
Vertical pressure, the opposing party prevents that excessively pressure causes diffusion to be lost by holding the spacing of column and can guarantee that the effect that diffusion is connected
Lose.
Further, two pieces of CLF-1 steel plates size shapes to be welded are identical, and two pieces of CLF-1 steel plate layers poststacks to be welded are waited to expand
Dissipate face unfitness of butt joint and be less than 0.5mm；The seaming chuck is identical with the size shape of push-down head, and seaming chuck is with after assembling mechanism assembling
The unfitness of butt joint of pressure head is less than 0.5mm.The present invention limit unfitness of butt joint direct purpose be to ensure that diffusion course of exerting pressure stabilization and
It is even, the play of upper and lower CLF-1 steel plates to be welded is prevented, and then ensure to treat that diffusingsurface realizes stable, uniform diffusion connection.When treating
Diffusingsurface unfitness of butt joint can cause to treat that diffusingsurface edge diffusion effect is substantially less than and treat that diffusingsurface center is spread when being more than 0.5mm
Effect, the main cause for causing the result is that the edge diffusion pressure that wrong variable increase is caused is uneven, and then causes side
Diffusion effect is poor at edge, therefore, and the present invention limits two pieces of CLF-1 steel plate layers poststacks to be welded and treats that diffusingsurface unfitness of butt joint is less than
0.5mm。
Further, the step 4 is additionally included in after the completion of Diffusion Welding with speed of furnace cooling to warm in vacuum diffusion welding machine
Degree is cooled, and weldment is taken out when being cooled to temperature less than 180 DEG C.
Further, in the step 5 during solution treatment under the conditions of 980 DEG C solution treatment 45min, during temper
Handle and be down to when being down to room temperature in 90min, the step 5 with the speed more than or equal to 6 DEG C/min under conditions of 740 DEG C
Room temperature.Because alloying element content is higher in CLF-1 steel, the present invention is limited to be cooled with the speed more than or equal to 6 DEG C/min, energy
Guarantee forms full martensitic structure；Because CLF-1 steel will be completely converted into the austenite phase of γ phases at slightly above 920 DEG C, Gu
Progress can guarantee that CLF-1 steel is completely converted into the austenite phase of γ phases under the conditions of 980 DEG C during molten processing.The present invention limits solid solution
Processing time is 45min, can prevent temperature is too high to cause crystal grain to be grown up seriously, and being avoided that temperature is too low again can not play very well
Solution strengthening effect.The present invention limits temper temperature as 740 DEG C, and temperature is less than 780 DEG C of recrystallization temperature, can
Avoid temperature is too low from can not realizing complete recovery and recrystallization, growing up for precipitated phase may be caused by being avoided that temperature is too high again.This
Invention post weld heat treatment mode can ultimately form tempered martensite and a small amount of ferritic stabilization, uniform formation, post weld heat treatment
The tissue crystal grain that mode is obtained is tiny, can prevent growing up for precipitated phase, in this way, diffusion interface impact flexibility can be made significantly to be carried
It is high.
Further, when being diffused welding in the step 4 diffusion temperature be 1020 DEG C~1080 DEG C, unit area
Diffusion pressure is 12~16MPa, 80~120min of soaking time.
In order to ensure CLF-1 steel plates to be welded and its uniformity of diffusion interface temperature, it is ensured that treat that diffusingsurface temperature reaches
Setting value, further, the step 4 be diffused welding before using three-level heat up by the way of rise to diffusion temperature
1080 DEG C, be every time at the uniform velocity to heat up during heating, and first order heating is heated up environment temperature in vacuum diffusion welding machine using 30min
To 350 DEG C, and 60min under the conditions of 350 DEG C of holding；Second level heating is warming up to 850 DEG C using 40min, and keeps 850 DEG C of conditions
Lower 40min；Unit area diffusion pressure adds to 2.5MPa when the third level is heated up, and 1080 DEG C are warming up to using 30min.Wherein, 350
DEG C, the selection of 850 DEG C and 1080 DEG C three temperature spots be mainly based upon the significant phase change transition temperature point of CLF-1 steel three, 780
DEG C or so be CLF-1 steel recrystallization temperature, 820 DEG C be CLF-1 steel α areas enter α+γ two-phase section transformation temperatures, slightly above 920 DEG C
CLF-1 steel will be completely converted into γ phases, according to temperatures above point, the performance such as combined process, equipment, it is final determine 850 DEG C and
1080 DEG C of equitemperature points；The determination of 850 DEG C and its following soaking time is mainly according to CLF-1 steel thermal conductivity and specimen size
Carry out substantially calculating gained, main purpose is to ensure that the temperature of diffusion sample is uniform, and the main root of soaking time at 1080 DEG C
According to treating that diffusion area size obtains.
In summary, the invention has the advantages that：（1）The present invention is before Diffusion Welding by CLF-1 steel plates to be welded
Surface roughness is down to 0.4 μm and its following, and to CLF-1 cleaning steel plates oil removing to be welded, can ensure that the cleannes at diffusion interface
And bonding gap, be conducive to CLF-1 steel to be welded to spread the combination at interface, and then the impact flexibility after Diffusion Welding can be lifted.
（2）The present invention, which is immediately placed in after being disposed to CLF-1 surface of steel plate to be welded under vacuum environment, to be protected, and is kept away
The generation of interfacial oxide to be spread is exempted from, so as to effectively prevent interfacial oxide to CLF-1 steel plates to be welded diffusion interface impact
The negative effect of toughness, can further lift the impact flexibility after Diffusion Welding.
（3）Entirety process of the invention is simple, is easy to implement, cost is low, and feasibility and repeatability are good, it is increased in solid-state
Meet associated specifications in the development for growing agent experiment cladding modular, the present invention can in nuclear fusion field other with CLF-1 steel
For popularization and application in the diffusion contoured members of structural material, application prospect is fine.
Brief description of the drawings
Fig. 1 is process chart of the invention；
Fig. 2 is structural representation when assembling mechanism is assembled with CLF-1 steel plates to be welded.
It is entitled corresponding to reference in accompanying drawing：1st, seaming chuck, 2, push-down head, 3, hold column, 4, upper CLF-1 to be welded
Steel plate, 5, under CLF-1 steel plates to be welded.
Embodiment
With reference to embodiment and accompanying drawing, detailed description further, but embodiments of the present invention are done to the present invention
Not limited to this.
Embodiment 1：
As shown in figure 1, a kind of method of CLF-1 steel Diffusion Welding, including the following steps carried out successively：Two pieces of processing is treated
Weld the surface roughness at CLF-1 steel plates interface to be spread, CLF-1 cleaning steel plates oil removing to be welded, by two pieces of CLF-1 steel plate coatings to be welded
Cover only solder flux and assemble, two blocks of CLF-1 steel plates to be welded be diffused welding and weldment solution treatment and temper are obtained
Finished product.The concrete operation step of the surface roughness at two blocks of CLF-1 steel plates to be welded of processing interface to be spread is：Using mechanical ball mill
By the rough surface at the interface to be spread of two blocks of CLF-1 steel plates to be welded with the mode of grinding or by the way of electrochemical polish
Degree is machined to no more than 0.4 μm.The concrete operation step of CLF-1 cleaning steel plates oil removing to be welded is：Successively using alkali cleaning, pickling,
Ultrasonic wave cleaning and the mode CLF-1 cleaning steel plate oil removing to be welded to two pieces of dehydration of alcohol, are put under vacuum environment immediately after
Protected.Wherein, NaOH solution is used during alkali cleaning, the formula of acid solution and the percent by volume of each component are during pickling：HF:
HCl:HNO3:H2O=2:3:15:19.It is by the concrete operation step that two pieces of CLF-1 steel plates coatings to be welded stop solder flux and assembled：
Coating stops solder flux on the interface to be spread of two blocks of CLF-1 steel plates to be welded, and two blocks of CLF-1 steel plates to be welded then are assembled in into vacuum expands
On the workbench for dissipating welding machine, the interracial contact to be spread of latter two blocks CLF-1 steel plates to be welded is completed.By two pieces of CLF- to be welded
The concrete operation step that 1 steel plate is diffused welding is：Two blocks of CLF-1 steel plates to be welded are diffused in vacuum diffusion welding machine
Welding, is cooled after the completion of Diffusion Welding with speed of furnace cooling to temperature in vacuum diffusion welding machine, is cooled to temperature less than 180
DEG C when take out weldment.Wherein, it is being diffused before welding by the way of three-level heating, is being every time at the uniform velocity to rise during heating
Environment temperature in vacuum diffusion welding machine is warming up to 350 DEG C by temperature, first order heating using 30min, and is kept under the conditions of 350 DEG C
60min；Second level heating uses 40min to be warming up to 40min under the conditions of 850 DEG C, and 850 DEG C of holding；The unit when third level is heated up
Area diffusion pressure adds to 2.5MPa, and 1080 DEG C are warming up to using 30min.When being warming up to 1080 DEG C, 15MPa is forced into, and
Insulation 90min is diffused welding.The concrete operation step that weldment solution treatment and temper obtain finished product is：Will diffusion
Weldment after welding carries out solution treatment, and room temperature, then temper are down to after solution treatment, room temperature is finally down to and is welded
Part finished product.Wherein, during solution treatment under the conditions of 980 DEG C solution treatment 45min, during temper under conditions of 740 DEG C locate
90min is managed, room temperature is down to the speed more than or equal to 6 DEG C/min when being down to room temperature.
As shown in Fig. 2 two blocks of CLF-1 steel plates to be welded of the present embodiment are assembled using assembling mechanism, assembling mechanism bag
Include seaming chuck 1, push-down head 2 and many and hold column 3, wherein, the material of seaming chuck 1 and push-down head 2 is graphite.It is to be welded to two pieces
Following steps including carrying out successively when CLF-1 steel plates are assembled：Push-down head 2 is placed on to the workbench of vacuum diffusion welding machine
On, one block of CLF-1 steel plate to be welded for being coated with only solder flux is placed on push-down head 2 and makes its interface to be spread upward, this is treated
Weldering CLF-1 steel plates be under CLF-1 steel plates 5 to be welded, the end face court to be welded for being coated with the only CLF-1 steel plates to be welded of solder flux by another piece
Descend and be placed on the CLF-1 steel plates to be welded of interface to be spread upward, the CLF-1 steel plates to be welded are upper CLF-1 steel plates 4 to be welded,
Column 3 is held by many to be evenly distributed on the surrounding of CLF-1 steel plates to be welded and be placed on push-down head 2, finally places seaming chuck 1
Holding on column 3.Upper CLF-1 steel plates 4 to be welded CLF-1 steel plates size shape to be welded with is identical in the present embodiment, and two pieces are treated
Weldering CLF-1 steel plate layer poststacks treat that diffusingsurface unfitness of butt joint is less than 0.5mm；The seaming chuck is identical with the size shape of push-down head, group
The unfitness of butt joint of seaming chuck and push-down head is less than 0.5mm after mounting mechanism assembling.
The present embodiment Diffusion Welding faying face is detected by the way of ultrasound detection, after testing, diffusingsurface is combined
Well, the echo of any defect is found no.Multiple welding experiment is carried out by the way of the present embodiment, the mother chosen every time
Material CLF-1 steel mechanical properties are shown in Table 1, to weldment finished product diffusion interface tensile strength test, the results are shown in Table 2, to weldment into
Product impact flexibility is tested, and the results are shown in Table 3.
From table 1, table 2 and table 3, the weldment finished product diffusion interface tensile strength welded using the present embodiment is more than mother
Material, breaks in mother metal, diffusion interface impact flexibility is also superior to mother metal during stretching weldment finished product.
Embodiment 2：
The present embodiment and the difference of embodiment 1 are：The present embodiment diffusion temperature when being diffused welding is 1020 DEG C,
Unit area diffusion pressure is 16MPa, soaking time 120min.To the present embodiment diffusion welding (DW) binding by the way of ultrasound detection
Conjunction face is detected that after testing, diffusingsurface is well combined, and finds no the echo of any defect.The weldering of the present embodiment welding
Fitting finished product diffusion interface tensile strength is more than mother metal, breaks during stretching weldment finished product in mother metal, spreads interface impact flexibility
Better than mother metal.
Embodiment 3：
The present embodiment and the difference of embodiment 1 are：The present embodiment diffusion temperature when being diffused welding is 1080 DEG C,
Unit area diffusion pressure is 12MPa, soaking time 80min.To the present embodiment diffusion welding (DW) binding by the way of ultrasound detection
Conjunction face is detected that after testing, diffusingsurface is well combined, and finds no the echo of any defect.The weldering of the present embodiment welding
Fitting finished product diffusion interface tensile strength is more than mother metal, breaks during stretching weldment finished product in mother metal, spreads interface impact flexibility
Better than mother metal.
As described above, the present invention can be realized preferably.
Claims (1)
1. a kind of method of CLF-1 steel Diffusion Welding, it is characterised in that comprise the following steps：
Step 1: the surface roughness at the interface to be spread of two blocks of CLF-1 steel plates to be welded is machined into no more than 0.4 μm；
Step 2: by two pieces of CLF-1 cleaning steel plates oil removings to be welded, being put under vacuum environment and being protected immediately after；
Step 3: coating stops solder flux on the interface to be spread of two blocks of CLF-1 steel plates to be welded, then by two blocks of CLF-1 steel to be welded
Plate is assembled on the workbench of vacuum diffusion welding machine, is completed the interracial contact to be spread of latter two blocks CLF-1 steel plates to be welded；
Wherein, two blocks of CLF-1 steel plates to be welded are assembled using assembling mechanism, and the assembling mechanism includes seaming chuck, push-down head and many
Root holds column, the following steps including carrying out successively during CLF-1 steel plates assembling to be welded to two pieces：Push-down head is placed on into vacuum to expand
On the workbench for dissipating welding machine, one block of CLF-1 steel plate to be welded for being coated with only solder flux is placed on push-down head and makes it wait to expand
Scattered interface upward, is coated with the end face to be welded of the only CLF-1 steel plates to be welded of solder flux down by another piece and is placed on boundary to be spread
On face-up CLF-1 steel plates to be welded, hold column by many and be evenly distributed on the surrounding of CLF-1 steel plates to be welded and be placed on and push
On head, finally seaming chuck is placed on and held on column；
Step 4: two blocks of CLF-1 steel plates to be welded are diffused into welding in vacuum diffusion welding machine；
Step 5: the weldment after Diffusion Welding is carried out into solution treatment, room temperature, then temper are down to after solution treatment, most
After be down to room temperature and obtain weldment finished product；
In the step 5 during solution treatment under the conditions of 980 DEG C solution treatment 45min, in 740 DEG C of condition during temper
Room temperature is down to the speed more than or equal to 6 DEG C/min when being down to room temperature in lower processing 90min, the step 5；
When welding is diffused in the step 4 diffusion temperature be 1080 DEG C, unit area diffusion pressure be 12MPa or
15MPa, wherein, soaking time 80min when unit area diffusion pressure is 12MPa, unit area diffusion pressure is protected when being 15MPa
Warm time 90min；
The step 4 be diffused welding before using three-level heating by the way of diffusion temperature is risen to 1080 DEG C, every time heat up
Shi Junwei is at the uniform velocity heated up, and environment temperature in vacuum diffusion welding machine is warming up to 350 DEG C by first order heating using 30min, and is kept
60min under the conditions of 350 DEG C；Second level heating uses 40min to be warming up to 40min under the conditions of 850 DEG C, and 850 DEG C of holding；The third level
Unit area diffusion pressure adds to 2.5MPa during heating, and 1080 DEG C are warming up to using 30min；
The roughness processing at the interface to be spread of CLF-1 steel plates to be welded is by the way of mechanical ball mill and grinding in the step one
Processing, or processed by the way of electrochemical polish；
The cleaning of CLF-1 steel plates to be welded is successively using the side of alkali cleaning, pickling, ultrasonic wave cleaning and dehydration of alcohol in the step 2
Formula is cleaned；
The formula of acid solution and the percent by volume of each component are during the pickling：HF:HCl:HNO3:H2O=2:3:15:19；
Two pieces of CLF-1 steel plates size shapes to be welded are identical, and two pieces of CLF-1 steel plate layers poststacks to be welded treat that diffusingsurface unfitness of butt joint is less than
0.5mm；The seaming chuck is identical with the size shape of push-down head, and the unfitness of butt joint of seaming chuck and push-down head is small after assembling mechanism assembling
In 0.5mm；
The step 4 is additionally included in after the completion of Diffusion Welding to be cooled with speed of furnace cooling to temperature in vacuum diffusion welding machine, drop
Temperature takes out weldment when being less than 180 DEG C to temperature.
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| CN106735831B (en) * | 2016-12-16 | 2019-03-01 | 中航力源液压股份有限公司 | A kind of diffusion welding method of ball bottle structure |
| CN110823768B (en) * | 2019-11-21 | 2023-02-28 | 中国核动力研究设计院 | Device and method for researching interface compatibility of solid material |
| CN113369800A (en) * | 2020-03-09 | 2021-09-10 | 天津大学 | Method for obtaining solid phase diffusion connection of low-activation ferrite/martensite steel and TP347H austenite steel reliable joint |
| CN116984726A (en) * | 2023-09-27 | 2023-11-03 | 中国航发沈阳黎明航空发动机有限责任公司 | Titanium alloy rectifying blade and limit control diffusion welding method for adjustable blade |
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| JP3748427B2 (en) * | 2002-10-31 | 2006-02-22 | 川崎重工業株式会社 | Rectangular channel built-in cooling panel and method of manufacturing the same |
| CN100398685C (en) * | 2006-05-27 | 2008-07-02 | 中国科学院等离子体物理研究所 | Structure steel material suitable for fusion reactor |
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