CN104858517A - Repairing method of palladium alloy tube assembly for hydrogen purification device - Google Patents
Repairing method of palladium alloy tube assembly for hydrogen purification device Download PDFInfo
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- CN104858517A CN104858517A CN201510212224.3A CN201510212224A CN104858517A CN 104858517 A CN104858517 A CN 104858517A CN 201510212224 A CN201510212224 A CN 201510212224A CN 104858517 A CN104858517 A CN 104858517A
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Abstract
The invention discloses a repairing method of a palladium alloy tube assembly for a hydrogen purification device. The method comprises the following steps: I, polishing a weld joint between a to-be-repaired palladium alloy tube in the palladium alloy tube assembly and a flange, and detaching the to-be-repaired palladium alloy tube; II, polishing the surface of the flange hole of the flange, performing ultrasonic cleaning, and drying for standby application; III, encircling silver solder spirally to form a spiral coil body, and cleaning for standby application; IV, assembling to form a part to be welded, and assembling the part to be welded on a soldering jig in a clamping manner; V, performing braze welding under heating on the part to be welded by utilizing a well-type resistance furnace in a medium-frequency induction melting furnace to obtain a repaired palladium alloy tube assembly. According to the repairing method of the palladium alloy tube assembly for the hydrogen purification device, in-situ replacement welding can be performed on the to-be-repaired palladium alloy tube in the palladium alloy tube assembly, and the repaired palladium alloy tube assembly can be reapplied to the hydrogen purification device, so that the degree of purity of the high-purity hydrogen separated by the hydrogen purification device can be improved, and the service life of the palladium alloy tube assembly is prolonged.
Description
Technical field
The invention belongs to palladium and palladium alloy pipe recovery technique field, be specifically related to a kind of restorative procedure of hydrogen purification apparatus palladium alloy pipe assembly.
Background technology
" heart " parts-palladium alloy pipe assembly of hydrogen purification apparatus is welded on one piece of metal flange thin-walled palladium alloy pipe dead for the soldering and sealing of a branch of one end.Because thin-walled palladium alloy pipe differs very large with the thermal capacity of metal flange, solder joint place is easily caused to occur micro-crack in welding process, the defects such as pore, simultaneously because hydrogen purification apparatus is at high pressure (0.2MPa ~ 0.8MPa), prolonged and repeated work under the nitrogen atmosphere of high temperature (300 DEG C ~ 500 DEG C), acutely and frequently thermal deformation is easy to cause the palladium alloy pipe of thin-walled and the junction of metal flange to damage, there is the defect such as micro-crack or pore, hydrogen purification apparatus is caused to leak, purification performance reduces greatly, once there be the root of indivedual palladium alloy pipe to occur defect in palladium alloy pipe assembly, all palladium alloy pipe in assembly can only be cut off, change ring flange soldering again, thus repair to get up comparatively to bother.
Summary of the invention
Technical problem to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of restorative procedure of hydrogen purification apparatus palladium alloy pipe assembly is provided, the method can realize carrying out original position to palladium alloy pipe to be repaired in palladium alloy pipe assembly and replace welding, the palladium alloy pipe assembly repaired can be applied in hydrogen purification apparatus again, improve the purity that hydrogen purification apparatus is separated High Purity Hydrogen, extend the service life of palladium alloy pipe assembly.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of restorative procedure of hydrogen purification apparatus palladium alloy pipe assembly, is characterized in that, comprise the following steps:
Weld seam in step one, employing small abrasive nose polishing palladium alloy pipe assembly between palladium alloy pipe to be repaired and ring flange, until separate palladium alloy pipe to be repaired from ring flange;
Described in step 2, polishing step one, the flange hole surface of ring flange, until flange hole smooth surface is smooth, is then placed in acetone by the ring flange after polishing and carries out ultrasonic cleaning, stand-by after drying;
Step 3, silver solder spiral surrounding is formed spiral circle body, then described spiral circle body is placed in acetone and cleans; The silk material of described silver solder to be cross-sectional diameter be 0.5mm ~ 0.8mm; The fusing point of described silver solder is lower than the fusing point of solder used during weld seam described in welding forming step one;
Step 4, will to dry in new palladium alloy pipe one end inserting step two in the flange hole of rear stub and stretch out 2mm ~ 5mm, the circle body of spiral described in step 3 is sleeved on new palladium alloy pipe to be stretched out on one end of flange hole, and make spiral circle body be close on ring flange, what obtain being made up of ring flange, spiral circle body and palladium alloy pipe treats weldment, then treats that weldment is clamped on brazing jig by described;
Step 5, clamping in step 4 is treated that weldment is placed in well formula resistance furnace on brazing jig, make to treat that the one end at weldment upper flange plate place is positioned at the thermal treatment zone of described well formula resistance furnace, then will treat that weldment and well formula resistance furnace are placed in medium frequency induction melting furnace, be not less than 1 × 10 in the vacuum of medium frequency induction melting furnace
-2under the condition of Pa, utilize well formula resistance furnace to treat weldment and carry out heating soldering, with the palladium alloy pipe assembly obtaining having repaired after stove cooling; The specific embodiment of described heating soldering is: heating rate be 7 DEG C/condition of min ~ 10 DEG C/min under well formula resistance furnace is heated up, after below the fusing point that in-furnace temperature rises to described silver solder 50 DEG C ~ 60 DEG C, be incubated 10min ~ 30min, rise to after more than the fusing point of described silver solder 20 DEG C ~ 50 DEG C until in-furnace temperature and be incubated 3min ~ 5min.
The restorative procedure of above-mentioned a kind of hydrogen purification apparatus palladium alloy pipe assembly, it is characterized in that, the specific embodiment of polishing described in step 2 is: adopt successively the waterproof abrasive paper of 600#, 800# and 1000# polish step by step ring flange flange hole surface.
The restorative procedure of above-mentioned a kind of hydrogen purification apparatus palladium alloy pipe assembly, it is characterized in that, the frequency of ultrasonic cleaning described in step 2 is 60KHz ~ 90KHz, temperature is 30 DEG C ~ 40 DEG C, and the time is 10min ~ 30min.
The restorative procedure of above-mentioned a kind of hydrogen purification apparatus palladium alloy pipe assembly, is characterized in that, the circle body of spiral described in step 3 is circular, the diameter 0.1mm ~ 0.2mm larger than the cross-sectional diameter of new palladium alloy pipe of described spiral circle body.
The restorative procedure of above-mentioned a kind of hydrogen purification apparatus palladium alloy pipe assembly, is characterized in that, the fit-up gap in palladium alloy pipe new described in step 4 and ring flange upper flange hole is 0.01mm ~ 0.02mm.
The present invention compared with prior art has the following advantages:
1, the present invention can realize carrying out original position to palladium alloy pipe to be repaired in palladium alloy pipe assembly and replace welding, the palladium alloy pipe assembly repaired can be applied in hydrogen purification apparatus again, improve the purity that hydrogen purification apparatus is separated High Purity Hydrogen, extend the service life of palladium alloy pipe assembly.
2, the present invention carries out heating soldering under vacuum, without the need to adding brazing flux, the pollution of gaseous impurity Welded Joints can be reduced, improving the degree of purity of ring flange and palladium alloy pipe soldering interface, and this heating soldering process stabilizing is controlled, the reliable in quality of welding point.
3, present invention achieves the local uniform of welding dissimilar materials joint is heated; reduce the temperature field that non-welding position is put; decrease the temperature distortion of palladium alloy pipe assembly, in realization is to palladium alloy pipe assembly, palladium alloy pipe to be repaired well protects other intact palladium alloy pipe while repairing.
4, the present invention achieves the Visible human plan in heating soldering process by the peep hole of medium frequency induction melting furnace, and simple to operate, rehabilitation cost is low, and the repair rate of soldering is more than 90%.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the device schematic diagram of heating soldering of the present invention.
Fig. 2 is the A portion enlarged drawing of Fig. 1.
Description of reference numerals:
1-ring flange; 2-spiral circle body; 3-well formula resistance furnace;
4-medium frequency induction melting furnace; 5-brazing jig.
Detailed description of the invention
The model that the well formula resistance furnace that the embodiment of the present invention 1 ~ embodiment 3 uses is the production of Luoyang permanent shaft kiln stove Co., Ltd is 1200 DEG C of HLJ series well-type electric furnaces.
Embodiment 1
In the present embodiment restorative procedure, the process of heating soldering adopts device schematic diagram as depicted in figs. 1 and 2 to carry out, in the present embodiment palladium alloy pipe assembly, the material of palladium alloy pipe is PdAg20 alloy, specification is φ 2mm × 0.08mm × 600mm, the material of ring flange 1 is N9 pure nickel alloy, when welding flange 1 and palladium alloy pipe, solder used is pure Ag solder, its fusing point is 962 DEG C, specifically comprises the following steps:
Weld seam in step one, employing small abrasive nose polishing palladium alloy pipe assembly between palladium alloy pipe to be repaired and ring flange 1, until separate palladium alloy pipe to be repaired from ring flange 1;
Described in step 2, polishing step one, the flange hole surface of ring flange 1, until flange hole smooth surface is smooth, is then placed in acetone by the ring flange 1 after polishing and carries out ultrasonic cleaning, stand-by after drying; The specific embodiment of described polishing is: adopt successively the waterproof abrasive paper of 600#, 800# and 1000# polish step by step ring flange 1 flange hole surface; The frequency of described ultrasonic cleaning is 80KHz, and temperature is 35 DEG C, and the time is 20min;
Step 3, silver solder spiral surrounding 3 enclosed form spiral circle body 2, then described spiral circle body 2 is placed in acetone and cleans; The silk material of described silver solder to be cross-sectional diameter be 0.6mm; Described silver solder is AgCu28 solder (fusing point is 779 DEG C); Described spiral circle body 2 is circular, the diameter 0.2mm larger than the cross-sectional diameter of new palladium alloy pipe of described spiral circle body 2;
Step 4, will to dry in new palladium alloy pipe one end inserting step two in the flange hole of rear stub 1 and stretch out 3mm, the circle body of spiral described in step 32 is sleeved on new palladium alloy pipe to be stretched out on one end of flange hole, and make spiral circle body 2 be close on ring flange 1, what obtain being made up of ring flange 1, spiral circle body 2 and palladium alloy pipe treats weldment, then treats that weldment is clamped on brazing jig 5 by described; The fit-up gap in described new palladium alloy pipe and ring flange 1 upper flange hole is 0.02mm; The material of described new palladium alloy pipe is identical with the palladium alloy pipe of specification all with to be repaired;
Step 5, clamping in step 4 is treated that weldment is placed in well formula resistance furnace 3 on brazing jig 5, make to treat that the one end at weldment upper flange plate 1 place is positioned at the thermal treatment zone of described well formula resistance furnace 3, then will treat that weldment and well formula resistance furnace 3 are placed in medium frequency induction melting furnace 4, be not less than 1 × 10 in the vacuum of medium frequency induction melting furnace 4
-2under the condition of Pa, utilize well formula resistance furnace 3 to treat weldment and carry out heating soldering, with the palladium alloy pipe assembly obtaining having repaired after stove cooling; The specific embodiment of described heating soldering is: be heat up to well formula resistance furnace 3 under the condition of 8 DEG C/min at heating rate, after below the fusing point that in-furnace temperature rises to described silver solder 55 DEG C, be incubated 20min, rise to after more than the fusing point of described silver solder 35 DEG C until in-furnace temperature and be incubated 4min.
Adopt helium mass spectrometer leak detector to hunt leak to the palladium alloy pipe assembly that the present embodiment reparation completes, result is that the slip of this palladium alloy pipe assembly is less than 5.0 × 10
-11pam
3/ s, illustrates that the air-tightness of weld seam in the palldium alloy assembly repaired is good, there is not micro-pore; Palladium alloy pipe assembly after reparation is after more than 200 times cold cycling use, and slip is still less than 5 × 10 after testing
-11pam
3/ s, illustrates that the palladium alloy pipe assembly air-tightness that the present embodiment reparation completes is good, can again be applied to the purification and separation carrying out high-purity hydrogen in hydrogen purification apparatus, and have longer service life.
Embodiment 2
In the present embodiment restorative procedure, the process of heating soldering adopts device schematic diagram as depicted in figs. 1 and 2 to carry out, in the present embodiment palladium alloy pipe assembly, the material of palladium alloy pipe is PdY8 alloy, specification is φ 2mm × 0.08mm × 600mm, the material of ring flange 1 is N6 pure nickel alloy, when welding flange 1 and palladium alloy pipe, solder used is BAg65CuPd solder, its fusing point is 880 DEG C, specifically comprises the following steps:
Weld seam in step one, employing small abrasive nose polishing hydrogen palladium alloy pipe assembly between palladium alloy pipe to be repaired and ring flange 1, until separate palladium alloy pipe to be repaired from ring flange 1;
Described in step 2, polishing step one, the flange hole surface of ring flange 1, until flange hole smooth surface is smooth, is then placed in acetone by the ring flange 1 after polishing and carries out ultrasonic cleaning, stand-by after drying; The specific embodiment of described polishing is: adopt successively the waterproof abrasive paper of 600#, 800# and 1000# polish step by step ring flange 1 flange hole surface; The frequency of described ultrasonic cleaning is 60KHz, and temperature is 40 DEG C, and the time is 30min;
Step 3, by conglobate for silver solder spiral surrounding 3 cast spiral circle body 2, then described spiral circle body 2 is placed in acetone and cleans; The silk material of described silver solder to be cross-sectional diameter be 0.8mm; Described silver solder is BAg68CuPd solder (fusing point is 807 DEG C ~ 810 DEG C); Described spiral circle body 2 is circular, the diameter 0.1mm larger than the cross-sectional diameter of new palladium alloy pipe of described spiral circle body 2;
Step 4, will to dry in new palladium alloy pipe one end inserting step two in the flange hole of rear stub 1 and stretch out 5mm, the circle body of spiral described in step 32 is sleeved on new palladium alloy pipe to be stretched out on one end of flange hole, and make spiral circle body 2 be close on ring flange 1, what obtain being made up of ring flange 1, spiral circle body 2 and palladium alloy pipe treats weldment, then treats that weldment is clamped on brazing jig 5 by described; The fit-up gap in described new palladium alloy pipe and ring flange 1 upper flange hole is 0.01mm; The material of described new palladium alloy pipe is identical with the palladium alloy pipe of specification all with to be repaired;
Step 5, clamping in step 4 is treated that weldment is placed in well formula resistance furnace 3 on brazing jig 5, make to treat that the one end at weldment upper flange plate 1 place is positioned at the thermal treatment zone of described well formula resistance furnace 3, then will treat that weldment and well formula resistance furnace 3 are placed in medium frequency induction melting furnace 4, be not less than 1 × 10 in the vacuum of medium frequency induction melting furnace 4
-2under the condition of Pa, utilize well formula resistance furnace 3 to treat weldment and carry out heating soldering, with the palladium alloy pipe assembly obtaining having repaired after stove cooling; The specific embodiment of described heating soldering is: be heat up to well formula resistance furnace 3 under the condition of 10 DEG C/min at heating rate, after below the fusing point that in-furnace temperature rises to described silver solder 50 DEG C, be incubated 10min, rise to after more than the fusing point of described silver solder 50 DEG C until in-furnace temperature and be incubated 3min.
Adopt helium mass spectrometer leak detector to hunt leak to the palladium alloy pipe assembly that the present embodiment reparation completes, result is that the slip of this palladium alloy pipe assembly is less than 5.0 × 10
-11pam
3/ s, illustrates that the air-tightness of weld seam in the palldium alloy assembly repaired is good, there is not micro-pore; Palladium alloy pipe assembly after reparation is after more than 100 times cold cycling use, and slip is still less than 5 × 10 after testing
-11pam
3/ s, illustrates that the palladium alloy pipe assembly air-tightness that the present embodiment reparation completes is good, can again be applied to the purification and separation carrying out high-purity hydrogen in hydrogen purification apparatus, and have longer service life.
Embodiment 3
In the present embodiment restorative procedure, the process of heating soldering adopts device schematic diagram as depicted in figs. 1 and 2 to carry out, in the present embodiment palladium alloy pipe assembly, the material of palladium alloy pipe is PdAgAuNi23-3-0.5 alloy, specification is φ 2mm × 0.08mm × 600mm, the material of ring flange 1 is 316L stainless steel, when welding flange 1 and palladium alloy pipe, solder used is AgCu28 solder, its fusing point is 779 DEG C, specifically comprises the following steps:
Weld seam in step one, employing small abrasive nose polishing hydrogen palladium alloy pipe assembly between palladium alloy pipe to be repaired and ring flange 1, until separate palladium alloy pipe to be repaired from ring flange 1;
Described in step 2, polishing step one, the flange hole surface of ring flange 1, until flange hole smooth surface is smooth, is then placed in acetone by the ring flange 1 after polishing and carries out ultrasonic cleaning, stand-by after drying; The specific embodiment of described polishing is: the polishing flange hole surface of the waterproof abrasive paper adopting 600#, 800# and 1000# successively ring flange 1 step by step; The frequency of described ultrasonic cleaning is 90KHz, and temperature is 30 DEG C, and the time is 10min;
Step 3, by conglobate for silver solder spiral surrounding 4 cast spiral circle body 2, then described spiral circle body 2 is placed in acetone and cleans; The silk material of described silver solder to be cross-sectional diameter be 0.5mm; Described silver solder is Ag97Li solder (fusing point is 600 DEG C); Described spiral circle body 2 is circular, the diameter 0.2mm larger than the cross-sectional diameter of palladium alloy pipe of described spiral circle body 2;
Step 4, will to dry in new palladium alloy pipe one end inserting step two in the flange hole of rear stub 1 and stretch out 2mm, the circle body of spiral described in step 32 is sleeved on new palladium alloy pipe to be stretched out on one end of flange hole, and make spiral circle body 2 be close on ring flange 1, what obtain being made up of ring flange 1, spiral circle body 2 and palladium alloy pipe treats weldment, then treats that weldment is clamped on brazing jig 5 by described; The fit-up gap in described new palladium alloy pipe and ring flange 1 upper flange hole is 0.01mm; The material of described new palladium alloy pipe is identical with the palladium alloy pipe of specification all with to be repaired;
Step 5, clamping in step 4 is treated that weldment is placed in well formula resistance furnace 3 on brazing jig 5, make to treat that the one end at weldment upper flange plate 1 place is positioned at the thermal treatment zone of described well formula resistance furnace 3, then will treat that weldment and well formula resistance furnace 3 are placed in medium frequency induction melting furnace 4, be not less than 1 × 10 in the vacuum of medium frequency induction melting furnace 4
-2under the condition of Pa, utilize well formula resistance furnace 3 to treat weldment and carry out heating soldering, with the palladium alloy pipe assembly obtaining having repaired after stove cooling; The specific embodiment of described heating soldering is: be heat up to well formula resistance furnace 3 under the condition of 10 DEG C/min at heating rate, after below the fusing point that in-furnace temperature rises to described silver solder 60 DEG C, be incubated 30min, rise to after more than the fusing point of described silver solder 20 DEG C until in-furnace temperature and be incubated 5min.
Adopt helium mass spectrometer leak detector to hunt leak to the palladium alloy pipe assembly that the present embodiment reparation completes, result is that the slip of this palladium alloy pipe assembly is less than 5.0 × 10
-11pam
3/ s, illustrates that the air-tightness of weld seam in the palldium alloy assembly repaired is good, there is not micro-pore; Palladium alloy pipe assembly after reparation is after more than 200 times cold cycling use, and slip is still less than 5 × 10 after testing
-11pam
3/ s, illustrates that the palladium alloy pipe assembly air-tightness that the present embodiment reparation completes is good, can again be applied to the purification and separation carrying out high-purity hydrogen in hydrogen purification apparatus, and have longer service life.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (5)
1. a hydrogen purification apparatus restorative procedure for palladium alloy pipe assembly, is characterized in that, comprise the following steps:
Weld seam in step one, employing small abrasive nose polishing palladium alloy pipe assembly between palladium alloy pipe to be repaired and ring flange (1), until separate palladium alloy pipe to be repaired from ring flange (1);
Described in step 2, polishing step one, the flange hole surface of ring flange (1), until flange hole smooth surface is smooth, is then placed in acetone by the ring flange (1) after polishing and carries out ultrasonic cleaning, stand-by after drying;
Step 3, by silver solder spiral surrounding formed spiral circle body (2), then described spiral circle body (2) is placed in acetone and cleans; The silk material of described silver solder to be cross-sectional diameter be 0.5mm ~ 0.8mm; The fusing point of described silver solder is lower than the fusing point of solder used during weld seam described in welding forming step one;
Step 4, will to dry in new palladium alloy pipe one end inserting step two in the flange hole of rear stub (1) and stretch out 2mm ~ 5mm, the circle body of spiral described in step 3 (2) is sleeved on new palladium alloy pipe to be stretched out on one end of flange hole, and make spiral circle body (2) be close on ring flange (1), what obtain being made up of ring flange (1), spiral circle body (2) and palladium alloy pipe treats weldment, then treats that weldment is clamped on brazing jig (5) by described;
Step 5, clamping in step 4 is treated that weldment is placed in well formula resistance furnace (3) on brazing jig (5), make to treat that the one end at weldment upper flange plate (1) place is positioned at the thermal treatment zone of described well formula resistance furnace (3), then will treat that weldment and well formula resistance furnace (3) are placed in medium frequency induction melting furnace (4), be not less than 1 × 10 in the vacuum of medium frequency induction melting furnace (4)
-2under the condition of Pa, utilize well formula resistance furnace (3) to treat weldment and carry out heating soldering, with the palladium alloy pipe assembly obtaining having repaired after stove cooling; The specific embodiment of described heating soldering is: heating rate be 7 DEG C/condition of min ~ 10 DEG C/min under well formula resistance furnace (3) is heated up, after below the fusing point that in-furnace temperature rises to described silver solder 50 DEG C ~ 60 DEG C, be incubated 10min ~ 30min, rise to after more than the fusing point of described silver solder 20 DEG C ~ 50 DEG C until in-furnace temperature and be incubated 3min ~ 5min.
2. according to the restorative procedure of a kind of hydrogen purification apparatus palladium alloy pipe assembly according to claim 1, it is characterized in that, the specific embodiment of polishing described in step 2 is: adopt successively the waterproof abrasive paper of 600#, 800# and 1000# polish step by step ring flange (1) flange hole surface.
3. according to the restorative procedure of a kind of hydrogen purification apparatus palladium alloy pipe assembly according to claim 1, it is characterized in that, the frequency of ultrasonic cleaning described in step 2 is 60KHz ~ 90KHz, and temperature is 30 DEG C ~ 40 DEG C, and the time is 10min ~ 30min.
4. according to the restorative procedure of a kind of hydrogen purification apparatus palladium alloy pipe assembly according to claim 1, it is characterized in that, the circle body of spiral described in step 3 (2) is circular, the diameter 0.1mm ~ 0.2mm larger than the cross-sectional diameter of new palladium alloy pipe of described spiral circle body (2).
5. according to the restorative procedure of a kind of hydrogen purification apparatus palladium alloy pipe assembly according to claim 1, it is characterized in that, the fit-up gap in palladium alloy pipe new described in step 4 and ring flange (1) upper flange hole is 0.01mm ~ 0.02mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510212224.3A CN104858517A (en) | 2015-04-29 | 2015-04-29 | Repairing method of palladium alloy tube assembly for hydrogen purification device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510212224.3A CN104858517A (en) | 2015-04-29 | 2015-04-29 | Repairing method of palladium alloy tube assembly for hydrogen purification device |
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| CN104858517A true CN104858517A (en) | 2015-08-26 |
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| CN201510212224.3A Pending CN104858517A (en) | 2015-04-29 | 2015-04-29 | Repairing method of palladium alloy tube assembly for hydrogen purification device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112916990A (en) * | 2021-01-26 | 2021-06-08 | 中广核核电运营有限公司 | Replacement method of nuclear grade branch pipe seat |
| CN114101836A (en) * | 2021-12-01 | 2022-03-01 | 中核四0四有限公司 | Brazing device and brazing method for palladium-silver-gold-nickel tube bundle and base |
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| EP1652612A1 (en) * | 2004-10-29 | 2006-05-03 | United Technologies Corporation | Method of repairing a brazed joint between two components of an aerospace article; Article repaired using such method |
| CN102380678A (en) * | 2011-09-16 | 2012-03-21 | 洛阳双瑞精铸钛业有限公司 | Resistance brazing welding method for titanium aluminum alloy turbine and steel shaft |
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| EP1652612A1 (en) * | 2004-10-29 | 2006-05-03 | United Technologies Corporation | Method of repairing a brazed joint between two components of an aerospace article; Article repaired using such method |
| CN102380678A (en) * | 2011-09-16 | 2012-03-21 | 洛阳双瑞精铸钛业有限公司 | Resistance brazing welding method for titanium aluminum alloy turbine and steel shaft |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112916990A (en) * | 2021-01-26 | 2021-06-08 | 中广核核电运营有限公司 | Replacement method of nuclear grade branch pipe seat |
| CN114101836A (en) * | 2021-12-01 | 2022-03-01 | 中核四0四有限公司 | Brazing device and brazing method for palladium-silver-gold-nickel tube bundle and base |
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Application publication date: 20150826 |