CN106180940A - A kind of method preparing high temperature resistant graphite Hastelloy N alloy-junction - Google Patents
A kind of method preparing high temperature resistant graphite Hastelloy N alloy-junction Download PDFInfo
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- CN106180940A CN106180940A CN201610535149.9A CN201610535149A CN106180940A CN 106180940 A CN106180940 A CN 106180940A CN 201610535149 A CN201610535149 A CN 201610535149A CN 106180940 A CN106180940 A CN 106180940A
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- hastelloy
- alloy
- graphite
- junction
- high temperature
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Classifications
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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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/008—Soldering within a furnace
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/19—Soldering, e.g. brazing, or unsoldering taking account of the properties of the materials to be soldered
-
- 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
- B23K1/00—Soldering, e.g. brazing, or unsoldering
- B23K1/20—Preliminary treatment of work or areas to be soldered, e.g. in respect of a galvanic coating
-
- 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
- B23K2103/18—Dissimilar materials
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a kind of method preparing high temperature resistant graphite Hastelloy N alloy-junction, 502 glue are used to carry out successively graphite, titanium foil and Hastelloy N alloy bonding, then it is placed in vacuum brazing furnace heating, after cooling, obtains graphite/Hastelloy N alloy-junction.Low cost of the present invention, simple to operate, do not destroy mother metal original structure, joint have under MSR operating temperature (about 700 DEG C) excellence mechanical property and stability.The present invention is that the construction of MSR critical component provides theoretical direction and technical support, promotes development and the application of MSR.
Description
Technical field
The present invention relates to soldering tech field, relate to a kind of side preparing high temperature resistant graphite-Hastelloy N alloy-junction
Method, particularly relates to one and utilizes titanium-nickel haptoreaction to obtain the graphite/Hastelloy N conjunction being applied to hot environment (700 DEG C)
The method of gold joint.
Background technology
MSR, as one of forth generation nuclear reactor candidate's heap-type, has nuclear fuel sustainable use, high thermal transition
The advantages such as efficiency, prominent inherent safety, receive significant attention.2011, it is first batch of that MSR is approved for the Chinese Academy of Sciences
" following advanced nuclear fission " strategy guide's science and technology special project starts and implements.High-temperature molten salt reactor is also restarted in approval in 2015 in U.S. government
Project.
Hastelloy N alloy as a kind of solution strengthening type Ni based high-temperature alloy, have excellent mechanical behavior under high temperature,
Non-oxidizability, corrosion-resistant and radiation-resistant property.In MSR, Hastelloy N alloy is often used to manufacture return, heap
The structure members such as core container and heat exchanger.
Graphite is a kind of important structural material, functional material and bio-medical material, have light weight, stability high,
The advantages such as corrosion resistance is strong, all have broad application prospects in fields such as Aeronautics and Astronautics, navigation, nuclear powers.At nuclear power field, stone
Ink is slowing material important in reactor.Solve the graphite connectivity problem with Hastelloy N alloy to developing MSR extremely
Close important.
Owing to graphite and the physics of metal material, chemical property are widely different, conventional welding technology is used to be difficult to realize
Connection between the two.At present, connecting graphite with the modal method of metal material is soldering, and the method has low cost, operation
Simply, do not destroy the advantages such as mother metal original structure, it is thus achieved that joint bonding strength is high and stable performance.When use conventional silver or
When auri solder connects graphite with Hastelloy N alloy, owing to this kind of solder anti-neutron irradiation ability is more weak, at strong irradiation bar
The poor stability of part lower contact.
Summary of the invention
The technical problem existed based on background technology, it is an object of the invention to provide a kind of low cost, simple to operate, no
Destroy mother metal original structure, and gained joint bonding strength is high, the titanium-nickel haptoreaction acquisition that utilizes of stable performance is applied to height
The method of the graphite/Hastelloy N alloy-junction of temperature environment (700 DEG C), the most anti-neutron irradiation ability is strong.
A kind of described method preparing high temperature resistant graphite-Hastelloy N alloy-junction, it is characterised in that by graphite,
It is bonding that titanium foil and Hastelloy N alloy use glue to carry out successively, is then placed in heating soldering in vacuum brazing furnace, and graphite/
Solder interface forms one layer of fine and close TiC conversion zone；Titanium-nickel compound is defined in brazed seam；Near brazed seam side
Mo is defined in Hastelloy N mother metal2C reaction zone, cooling obtains graphite/Hastelloy N alloy-junction.
Described prepare high temperature resistant graphite/Hastelloy N alloy-junction method, it is characterised in that titanium-nickel compound includes
TiNi、Ti2Ni、TiNi3。
Described preparing high temperature resistant graphite/Hastelloy N alloy-junction method, the hot environment of indication of the present invention is 600-
800 DEG C, it is characterised in that specifically comprise the following steps that
1) put into Hastelloy N alloy and graphite to fill in the ultrasonic washing unit of acetone and be carried out, adopt the most successively
With 400#, 600#, 1000#, 1500# sand papering its to be connected, then it is polished；
2) use 502 glue to carry out successively graphite, titanium foil and Hastelloy N alloy bonding, be then placed in vacuum brazing furnace
It is heated to 250～350 DEG C, is incubated 25～30min, is again heated to 920～940 DEG C, be incubated 8～12min, be then heated to soldering
Temperature, is incubated 5～15min, and now the nickel in titanium and Hastelloy N alloy comes in contact reaction and is changed into liquid phase；Stone simultaneously
The elements such as the carbon in ink and the chromium in Hastelloy N alloy, molybdenum, ferrum dissolve in this liquid phase；Then reduce stove to warm to room temperature
Obtaining graphite/Hastelloy N alloy-junction, now graphite/solder interface forms one layer of fine and close TiC conversion zone；Brazed seam
Inside define titanium-nickel compound；Mo is defined in the Hastelloy N mother metal of brazed seam side2C reaction zone.
Described prepare high temperature resistant graphite/Hastelloy N alloy-junction method, it is characterised in that step 2) in titanium foil
Thickness is 0.05～0.15mm, and its purity is 99.99%.
Described prepare high temperature resistant graphite/Hastelloy N alloy-junction method, it is characterised in that step 2) in the thickness of titanium foil
Degree is 0.127mm, and its purity is 99.99%.
Described prepare high temperature resistant graphite/Hastelloy N alloy-junction method, it is characterised in that step 2) in brazing temperature
It it is 980～1100 DEG C.
Described prepare high temperature resistant graphite/Hastelloy N alloy-junction method, it is characterised in that step 2) in brazing temperature
It it is 1060 DEG C.
Described prepare high temperature resistant graphite/Hastelloy N alloy-junction method, it is characterised in that step 2) in reduce furnace temperature
As follows to the concrete operations of room temperature: furnace temperature to be down to 300 DEG C with the speed of 4～8 DEG C/min, then cools to room temperature with the furnace.
Described prepare high temperature resistant graphite/Hastelloy N alloy-junction method, it is characterised in that step 2) in, reduce stove
The concrete operations warmed to room temperature are as follows: with the speed of 6 DEG C/min, furnace temperature is down to 300 DEG C, then cools to room temperature with the furnace.
Described prepare high temperature resistant graphite/Hastelloy N alloy-junction method, it is characterised in that step 2) in gained stone
The average shear strength of ink/Hastelloy N alloy-junction is 22MPa, has reached the 72% of graphite mother metal shear strength, meets
Requirement of actual working condition.
Beneficial effects of the present invention: achieve the company between graphite and Hastelloy N alloy by application soldering tech
Connect, low cost, simple to operate, do not destroy mother metal original structure, the most anti-neutron irradiation ability is strong.Joint is in MSR work temperature
Having mechanical property and the stabilization energy of excellence under degree (about 700 DEG C), it is that in MSR, the construction of critical component provides reason
Opinion instructs and technical support, promotes development and the application of MSR.
Accompanying drawing explanation
Fig. 1 is the embodiment of the present invention 4 step 2) in " by graphite, thickness is 0.15mm, purity is the titanium foil of 99.99%, and
It is bonding that Hastelloy N alloy uses 502 glue to carry out successively " schematic diagram；
Fig. 2 is the composition schematic diagram of the embodiment of the present invention 4 gained graphite/Hastelloy N alloy-junction.
In figure: 1-graphite, 2-titanium foil, 3-Hastelloy N alloy, 4-TiC conversion zone, 5-Ti2Ni, 6-TiNi, 7-
TiNi3, 8-Mo2C reaction zone.
Detailed description of the invention
Below, by specific embodiment, technical scheme is described in detail.
Embodiment 1
The present invention propose a kind of method preparing high temperature resistant graphite-Hastelloy N alloy-junction, by graphite, titanium foil and
It is bonding that Hastelloy N alloy uses 502 glue to carry out successively, is then placed in vacuum brazing furnace heating, obtain after cooling graphite/
Hastelloy N alloy-junction.
Embodiment 2
A kind of method preparing high temperature resistant graphite-Hastelloy N alloy-junction that the present invention proposes, specifically comprises the following steps that
1) put into Hastelloy N alloy and graphite to fill in the ultrasonic washing unit of acetone and be carried out, adopt the most successively
With 400#, 600#, 1000#, 1500# sand papering its to be connected, then it is polished；
2) by graphite, thickness is 0.15mm, purity is the titanium foil of 99.99%, and Hastelloy N alloy uses 502 glue to enter successively
Row is bonding, is then placed in vacuum brazing furnace and is heated to 350 DEG C, is incubated 25min, is again heated to 940 DEG C, is incubated 8min, then
It is heated to 1100 DEG C, is incubated 5min, then furnace temperature is down to 300 DEG C with the speed of 8 DEG C/min, then cools to room temperature with the furnace and obtain
To graphite/Hastelloy N alloy-junction.
Embodiment 3
A kind of method preparing high temperature resistant graphite-Hastelloy N alloy-junction that the present invention proposes, specifically comprises the following steps that
1) put into Hastelloy N alloy and graphite to fill in the ultrasonic washing unit of acetone and be carried out, adopt the most successively
With 400#, 600#, 1000#, 1500# sand papering its to be connected, then it is polished；
2) by graphite, thickness is 0.05mm, purity is the titanium foil of 99.99%, and Hastelloy N alloy uses 502 glue to enter successively
Row is bonding, is then placed in vacuum brazing furnace and is heated to 250 DEG C, is incubated 28min, is again heated to 920 DEG C, is incubated 12min, then
It is heated to 980 DEG C, is incubated 15min, then furnace temperature is down to 300 DEG C with the speed of 4 DEG C/min, then cools to room temperature with the furnace and obtain
To graphite/Hastelloy N alloy-junction.
Embodiment 4
A kind of method preparing high temperature resistant graphite-Hastelloy N alloy-junction that the present invention proposes, specifically comprises the following steps that
1) put into Hastelloy N alloy and graphite to fill in the ultrasonic washing unit of acetone and be carried out, adopt the most successively
With 400#, 600#, 1000#, 1500# sand papering its to be connected, then it is polished；
2) such as Fig. 2, by graphite 1, the titanium foil 2 that thickness is 0.127mm, purity is 99.99%, and Hastelloy N alloy 3 is successively
Use 502 glue to carry out bonding, be then placed in vacuum brazing furnace and be heated to 300 DEG C with the speed of 10 DEG C/min, be incubated 30min,
It is heated to 930 DEG C with the speed of 10 DEG C/min again, is incubated 10min, is then heated to 1060 DEG C, be incubated 10min, then by furnace temperature
It is down to 300 DEG C with the speed of 6 DEG C/min, then cools to room temperature with the furnace and obtain graphite/Hastelloy N alloy-junction, its knot
Structure as in figure 2 it is shown, now the nickel in titanium and Hastelloy N alloy come in contact reaction and be changed into liquid phase；Simultaneously in graphite
The elements such as chromium in carbon and Hastelloy N alloy, molybdenum, ferrum dissolve in this liquid phase；Then reduction stove warms to room temperature and obtains stone
Ink/Hastelloy N alloy-junction, now graphite/solder interface forms one layer of fine and close TiC conversion zone 4；Formed in brazed seam
Titanium-nickel compound Ti2Ni5, TiNi6 and TiNi37；Mo is defined in the Hastelloy N mother metal of brazed seam side2C is anti-
8 should be carried.
The above, the only present invention preferably detailed description of the invention, but protection scope of the present invention is not limited thereto,
Any those familiar with the art in the technical scope that the invention discloses, according to technical scheme and
Inventive concept equivalent or change in addition, all should contain within protection scope of the present invention.
Claims (10)
1. the method preparing high temperature resistant graphite-Hastelloy N alloy-junction, it is characterised in that by graphite, titanium foil and
It is bonding that Hastelloy N alloy uses glue to carry out successively, is then placed in heating soldering in vacuum brazing furnace, obtains stone after cooling
Ink/Hastelloy N alloy-junction.Graphite/solder interface forms one layer of fine and close TiC conversion zone；Define in brazed seam titanium-
Nickel compound；Mo is defined in the Hastelloy N mother metal of brazed seam side2C reaction zone.
Prepare high temperature resistant graphite/Hastelloy N alloy-junction method the most according to claim 1, it is characterised in that titanium-nickel
Compound includes TiNi, Ti2Ni、TiNi3。
Prepare high temperature resistant graphite/Hastelloy N alloy-junction method the most according to claim 1, it is characterised in that concrete
Step is as follows:
1) put into Hastelloy N alloy and graphite to fill in the ultrasonic washing unit of acetone and be carried out, adopt the most successively
With 400#, 600#, 1000#, 1500# sand papering its to be connected, then it is polished；
2) use 502 glue to carry out successively graphite, titanium foil and Hastelloy N alloy bonding, be then placed in vacuum brazing furnace
It is heated to 250～350 DEG C, is incubated 25～30min, is again heated to 920～940 DEG C, be incubated 8～12min, be then heated to soldering
Temperature, is incubated 5～15min, and then reduction stove warms to room temperature and obtains graphite/Hastelloy N alloy-junction.
Prepare high temperature resistant graphite/Hastelloy N alloy-junction method the most according to claim 3, it is characterised in that step
2) in, the thickness of titanium foil is 0.05～0.15mm, and its purity is 99.99%.
Prepare high temperature resistant graphite/Hastelloy N alloy-junction method the most according to claim 3, it is characterised in that step
2) in, the thickness of titanium foil is 0.127mm, and its purity is 99.99%.
Prepare high temperature resistant graphite/Hastelloy N alloy-junction method the most according to claim 3, it is characterised in that step
2) in, brazing temperature is 980～1100 DEG C.
Prepare high temperature resistant graphite/Hastelloy N alloy-junction method the most according to claim 3, it is characterised in that step
2) in, brazing temperature is 1060 DEG C.
Prepare high temperature resistant graphite/Hastelloy N alloy-junction method the most according to claim 3, it is characterised in that step
2) concrete operations that in, reduction stove warms to room temperature are as follows: with the speed of 4～8 DEG C/min, furnace temperature is down to 300 DEG C, then cold with stove
But to room temperature.
Prepare high temperature resistant graphite/Hastelloy N alloy-junction method the most according to claim 3, it is characterised in that step
2), in, the concrete operations that reduction stove warms to room temperature are as follows: with the speed of 6 DEG C/min, furnace temperature is down to 300 DEG C, then furnace cooling
To room temperature.
Prepare high temperature resistant graphite/Hastelloy N alloy-junction method the most according to claim 3, it is characterised in that step
2) in, the average shear strength of gained graphite/Hastelloy N alloy-junction is 22MPa.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3022162A (en) * | 1960-07-25 | 1962-02-20 | Ralph G Donnelly | Brazing alloys |
| CN101972877A (en) * | 2010-11-03 | 2011-02-16 | 哈尔滨工业大学 | Contact reaction brazing connection method for TiAl based alloy and Ni based high-temperature alloy |
| CN104308360A (en) * | 2014-09-01 | 2015-01-28 | 山东大学 | Diffusion bonding method for graphite, low carbon steel and stainless steel |
| CN105537711A (en) * | 2016-01-22 | 2016-05-04 | 浙江工业大学 | Method for brazed connection of Hastelloy N alloy through titanium foil |
-
2016
- 2016-07-08 CN CN201610535149.9A patent/CN106180940B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3022162A (en) * | 1960-07-25 | 1962-02-20 | Ralph G Donnelly | Brazing alloys |
| CN101972877A (en) * | 2010-11-03 | 2011-02-16 | 哈尔滨工业大学 | Contact reaction brazing connection method for TiAl based alloy and Ni based high-temperature alloy |
| CN104308360A (en) * | 2014-09-01 | 2015-01-28 | 山东大学 | Diffusion bonding method for graphite, low carbon steel and stainless steel |
| CN105537711A (en) * | 2016-01-22 | 2016-05-04 | 浙江工业大学 | Method for brazed connection of Hastelloy N alloy through titanium foil |
Non-Patent Citations (1)
| Title |
|---|
| 熊国刚: "《石墨与钼合金钎焊材料与钎焊工艺的研究》", 《中国优秀博硕士学位论文全文数据库 (硕士) 工程科技Ⅰ辑》 * |
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