CN103862124B - The vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure - Google Patents
The vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure Download PDFInfo
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- CN103862124B CN103862124B CN201410128745.6A CN201410128745A CN103862124B CN 103862124 B CN103862124 B CN 103862124B CN 201410128745 A CN201410128745 A CN 201410128745A CN 103862124 B CN103862124 B CN 103862124B
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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
- B23K1/20—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
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
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Abstract
A vacuum brazing method for the two-sided formation brazed seam of the one-sided preseting solder of I-shaped structure, it relates to the method for the preseting solder vacuum brazing of a kind of i-beam structure and similar steel construction.The present invention seeks to solve existing i-beam structure and the vacuum brazing of similar structures joint preseting solder, to there is assembly difficulty large, the problem that solder utilization rate is low.Method: one, according to I-shaped, vertical panel and two level boards are docked; Two, gap preseting solder between weldment side vertical panel and level board is treated at i-beam structure; Three, with i-beam structure after preseting solder until weldment preseting solder side upper by preseting solder after i-beam structure treat that weldment puts into vacuum brazing furnace, vacuum welding, obtain I-shaped structure steel fastener.The present invention is mainly used in welding I-shaped structural steel structural member.
Description
Technical field
The invention belongs to vacuum brazing field, be specifically related to preseting solder vacuum brazing method, particularly relate to the method for the preseting solder vacuum brazing of a kind of i-beam structure and similar steel construction.
Background technology
I shaped steel structure and similar structures joint are widely used in the production of every field product, and preseting solder Vacuum Soldering Technology is widely used in the middle of the production of this class formation.
The rare solder that utilizes carries out the method for welding of soldering in the wetting and spreading phenomenon of from a non-horizontal surface at present.Conventional i-beam structure preseting solder Vacuum Soldering Technology is preset in all gaps to be welded when assembling by solder, namely all preseting solder is wanted in vertical panel and upper level board gap and vertical panel and lower horizontal board gap, and then put into vacuum drying oven and carry out soldering processing, and the method for this preseting solder causes ensureing that when assembling upside and downside all preset solder sheet, assembling process is complicated.And in brazing process, the solder utilization rate of this preset mode is not high, for the I-shaped joint of some miniature workpieces, be difficult to accomplish bilateral preseting solder simultaneously.So there is assembly difficulty greatly in existing i-beam structure and the vacuum brazing of similar structures joint preseting solder, the problem that solder utilization rate is low.
Summary of the invention
The present invention seeks to solve existing i-beam structure and the vacuum brazing of similar structures joint preseting solder, to there is assembly difficulty large, the problem that solder utilization rate is low, and provide the vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure.
The vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure, specifically carry out according to the following steps: one, according to I-shaped, vertical panel and two level boards are docked, obtain i-beam structure and treat weldment, vertical panel thickness is 0.3mm ~ 2mm, vertical panel height is 3mm ~ 15mm, and level board thickness is 0.3mm ~ 2mm; Two, gap preseting solder between weldment side vertical panel and level board is treated at i-beam structure, solder thickness is 0.03mm ~ 0.15mm, if solder width is X, vertical panel thickness is Y, then X-Y=0.1mm ~ 20mm, after obtaining preseting solder, i-beam structure treats weldment; Three, i-beam structure after preseting solder is treated that weldment puts into vacuum brazing furnace, be not less than 1 × 10 in vacuum
-2under Pa with 10 DEG C/min from room temperature to 600 ~ 700 DEG C, and be not less than 1 × 10 in vacuum
-2pa and temperature are be incubated 10min ~ 30min at 600 ~ 700 DEG C, then are warming up to 1100 ~ 1110 DEG C with 10 DEG C/min, and are not less than 1 × 10 in vacuum
-2pa and temperature are be incubated 5-35min at 1100 ~ 1110 DEG C, finally with rate of temperature fall be 8 DEG C/min ~ 12 DEG C/min is cooled to normal temperature, obtains I-shaped structure steel fastener, namely completes the vacuum brazing of the two-sided formation brazed seam of the one-sided preseting solder of I-shaped structure.
Advantage of the present invention: the present invention adopts the vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of I-shaped structure compared with the conventional method comparatively, except can while i-beam structure upper and lower both sides gap location forms full brazed seam, decrease the step of assembling, the service efficiency of the solder that the use amount decreasing solder improves, greatly reduce production cost, change conventional I-shaped and similar steel construction is dissimilar steel material plug simultaneously, utilize principle of minimum free energy, achieve the wetting and spreading of solder in not horizontally planar, solving existing i-beam structure and the vacuum brazing of similar structures joint preseting solder, to there is assembly difficulty large, the problem that solder utilization rate is low.
Accompanying drawing explanation
Fig. 1 is existing i-beam structure preseting solder method schematic diagram;
Fig. 2 is detailed description of the invention one i-beam structure preseting solder (solder is upper) method schematic diagram;
Fig. 3 is detailed description of the invention one i-beam structure preseting solder (solder under) method schematic diagram;
Fig. 4 is the i-beam structure pictorial diagram of a test soldering, and wherein level board material is 304 stainless steels, and vertical panel material is SPCC carbon steel;
Fig. 5 is test two brazing sheet fin structure joint top metallograph, and wherein vertical panel material is 430 stainless steels, and level board material is 304 stainless steels;
Fig. 6 is test two brazing sheet fin structure joint bottom metallograph, and wherein vertical panel material is 430 stainless steels, and level board material is 304 stainless steels;
Fig. 7 is test three brazing sheet fin structure joint top metallograph, and wherein vertical panel material is 430 stainless steels, and level board material is 304 stainless steels;
Fig. 8 is test three brazing sheet fin structure joint bottom metallograph, and wherein vertical panel material is 430 stainless steels, and level board material is 304 stainless steels;
Fig. 9 is test four brazing sheet fin structure joint top metallograph, and wherein vertical panel material is SPCC carbon steel, and level board material is 304 stainless steels;
Figure 10 is test four brazing sheet fin structure joint bottom metallograph, and wherein vertical panel material is SPCC carbon steel, and level board material is 304 stainless steels.
Detailed description of the invention
Technical solution of the present invention is not limited to following cited detailed description of the invention, also comprises any combination between each detailed description of the invention.
Detailed description of the invention one: composition graphs 2 and Fig. 3, present embodiment is the vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure, specifically carry out according to the following steps: one, according to I-shaped, vertical panel and two level boards are docked, obtain i-beam structure and treat weldment, vertical panel thickness is 0.3mm ~ 2mm, vertical panel height is 3mm ~ 15mm, and level board thickness is 0.3mm ~ 2mm; Two, gap preseting solder between weldment side vertical panel and level board is treated at i-beam structure, solder thickness is 0.03mm ~ 0.15mm, if solder width is X, vertical panel thickness is Y, then X-Y=0.1mm ~ 20mm, after obtaining preseting solder, i-beam structure treats weldment; Three, i-beam structure after preseting solder is treated that weldment puts into vacuum brazing furnace, be not less than 1 × 10 in vacuum
-2under Pa with 10 DEG C/min from room temperature to 600 ~ 700 DEG C, and be not less than 1 × 10 in vacuum
-2pa and temperature are be incubated 10min ~ 30min at 600 ~ 700 DEG C, then are warming up to 1100 ~ 1110 DEG C with 10 DEG C/min, and are not less than 1 × 10 in vacuum
-2pa and temperature are be incubated 5-35min at 1100 ~ 1110 DEG C, finally with rate of temperature fall be 8 DEG C/min ~ 12 DEG C/min is cooled to normal temperature, obtains I-shaped structure steel fastener, namely completes the vacuum brazing of the two-sided formation brazed seam of the one-sided preseting solder of I-shaped structure.
Vertical panel described in present embodiment step one, through sand papering, implements surface roughening process.
Fig. 1 is existing i-beam structure preseting solder method schematic diagram, and in figure, A is preset solder.
Fig. 2 is detailed description of the invention one i-beam structure preseting solder (solder is upper) method schematic diagram; In figure, B is preset solder;
Fig. 3 is detailed description of the invention one i-beam structure preseting solder (solder under) method schematic diagram; In figure, B is preset solder.
Present embodiment is in the design of I-shaped and similar steel construction soldered fitting, and the vertical panel of I-shaped structure and similar steel construction and level board are designed to dissimilar steel material, and the activity between vertical panel and solder is greater than the activity between level board and solder.When preseting solder is carried out in then butt joint, only at the side preseting solder of vertical panel and level board, take full advantage of the solid-liquid system principle of minimum free energy in brazing process, the selection of liquid solder between foreign material is utilized to sprawl, realize the vertical wetting and spreading of solder on vertical panel, thus complete the soldering to non-preseting solder one side clearance.
Present embodiment can make solder on vertical panel, have stronger wettability, can soldering I-shaped structure height be the steel construction piece of 20 ~ 50mm.
Detailed description of the invention two: the difference of present embodiment and detailed description of the invention one is: the vertical panel described in step one is mild steel steel plate.Other are identical with detailed description of the invention one.
Detailed description of the invention three: one of present embodiment and detailed description of the invention one or two difference is: the vertical panel described in step one is 430 corrosion resistant plates or SPCC carbon steel.Other are identical with detailed description of the invention one or two.
Detailed description of the invention four: one of present embodiment and detailed description of the invention one to three difference is: the level board described in step one is 304 corrosion resistant plates.Other are identical with detailed description of the invention one to three.
Detailed description of the invention five: one of present embodiment and detailed description of the invention one to four difference is: the solder described in step 2 is the Ni-based soldering paste of stainless steel, stainless steel iron-based soldering paste or containing Cu amount be more than 50% stainless steel braze welding copper base solder sheet; Wherein said is containing the copper base Cu-Ni-Mn series stainless steel solder of Cu amount more than 50% or containing the copper base Cu-Sn-P series stainless steel solder of Cu amount more than 50% containing the Cu amount stainless steel braze welding copper base solder sheet that is more than 50%.Other are identical with detailed description of the invention one to four.
Detailed description of the invention six: one of present embodiment and detailed description of the invention one to five difference is: treat gap preseting solder between weldment side vertical panel and level board at i-beam structure in step 2, solder thickness is 0.08mm, if solder width is X, vertical panel thickness is Y, then X-Y=2mm ~ 12mm, after obtaining preseting solder, i-beam structure treats weldment.Other are identical with detailed description of the invention one to five.
Adopt following verification experimental verification effect of the present invention
Test one: the vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure, specifically carry out according to the following steps:
One, vertical panel and two level boards are docked according to I-shaped, obtain i-beam structure and treat weldment, vertical panel thickness is 0.4mm, and vertical panel height is 10mm, and level board thickness is 0.4mm; Two, treat gap preseting solder between weldment side vertical panel and level board at i-beam structure, solder thickness is 0.08mm, if solder width is 1mm, after obtaining preseting solder, i-beam structure treats weldment; Three, with i-beam structure after preseting solder until weldment preseting solder side upper by preseting solder after i-beam structure treat that weldment puts into vacuum brazing furnace, be 1 × 10 in vacuum
-1under Pa with 10 DEG C/min from room temperature to 1060 DEG C, and be not less than 1 × 10 in vacuum
-1pa and temperature are be incubated 10min at 1060 DEG C, then are warming up to 1110 DEG C with 10 DEG C/min, and are not less than 1 × 10 in vacuum
-2pa and temperature are be incubated 25min at 1110 DEG C, then are that 10 DEG C/min is cooled to normal temperature with rate of temperature fall, obtain I-shaped structure steel fastener, namely complete the vacuum brazing of the two-sided formation brazed seam of the one-sided preseting solder of I-shaped structure.
Vertical panel described in this test procedure one is SPCC carbon steel.
Level board described in this test procedure one is 304 corrosion resistant plates.
Solder described in this test procedure two is T2 red copper solder sheet.
Vertical panel described in this test procedure one, through sand papering, implements surface roughening process.
Fig. 4 is the i-beam structure pictorial diagram of a test soldering, and in figure, A is weld seam, and to weld the weld seam obtained full in this test as shown in Figure 4.
Test two: the vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure, specifically carry out according to the following steps:
One, vertical panel and two level boards are docked according to I-shaped, obtain i-beam structure and treat weldment, vertical panel thickness is 0.4mm, and vertical panel height is 3mm, and level board thickness is 0.4mm; Two, treat gap preseting solder between weldment side vertical panel and level board at i-beam structure, solder thickness is 0.08mm, if solder width is 3mm, after obtaining preseting solder, i-beam structure treats weldment; Three, with i-beam structure after preseting solder until weldment preseting solder side upper by preseting solder after i-beam structure treat that weldment puts into vacuum brazing furnace, be 1 × 10 in vacuum
-1under Pa with 10 DEG C/min from room temperature to 1060 DEG C, and be not less than 1 × 10 in vacuum
-1pa and temperature are be incubated 10min at 1060 DEG C, then are warming up to 1110 DEG C with 10 DEG C/min, and are not less than 1 × 10 in vacuum
-2pa and temperature are be incubated 25min at 1110 DEG C, then are that 10 DEG C/min is cooled to normal temperature with rate of temperature fall, obtain I-shaped structure steel fastener, namely complete the vacuum brazing of the two-sided formation brazed seam of the one-sided preseting solder of I-shaped structure.
Vertical panel described in this test procedure one is U-shaped wave-shape board, and described U-shaped wave-shape board is 430 stainless steels.
Vertical panel height described in this test procedure one equals the vertical range of two level boards.
Level board described in this test procedure one is 304 corrosion resistant plates.
Solder described in this test procedure two is BNi71CrSiP nickel-based solder sheet.
Vertical panel described in this test procedure one, through sand papering, implements surface roughening process.
Fig. 5 is test two brazing sheet fin structure joint top metallograph, Fig. 6 is test two brazing sheet fin structure joint bottom metallograph, method for welding of the present invention is used to carry out plate fin structure soldering by the known nickel-based solder of selecting of Fig. 5 and Fig. 6, can obtain full plate wing joint in upper and lower both sides, its joint quality is not less than the soldered fitting that conventional plate fin structure preseting solder method for welding obtains simultaneously.
Test three: the vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure, specifically carry out according to the following steps:
One, vertical panel and two level boards are docked according to I-shaped, obtain i-beam structure and treat weldment, vertical panel thickness is 0.4mm, and vertical panel height is 3mm, and level board thickness is 0.4mm; Two, treat gap preseting solder between weldment side vertical panel and level board at i-beam structure, solder thickness is 0.08mm, if solder width is 3mm, after obtaining preseting solder, i-beam structure treats weldment; Three, with i-beam structure after preseting solder until weldment preseting solder side upper by preseting solder after i-beam structure treat that weldment puts into vacuum brazing furnace, be 1 × 10 in vacuum
-1under Pa with 10 DEG C/min from room temperature to 1060 DEG C, and be not less than 1 × 10 in vacuum
-1pa and temperature are be incubated 10min at 1060 DEG C, then are warming up to 1110 DEG C with 10 DEG C/min, and are not less than 1 × 10 in vacuum
-2pa and temperature are be incubated 25min at 1110 DEG C, then are that 10 DEG C/min is cooled to normal temperature with rate of temperature fall, obtain I-shaped structure steel fastener, namely complete the vacuum brazing of the two-sided formation brazed seam of the one-sided preseting solder of I-shaped structure.
Vertical panel described in this test procedure one is U-shaped wave-shape board, and described U-shaped wave-shape board is 430 stainless steels.
Vertical panel height described in this test procedure one equals the vertical range of two level boards.
Level board described in this test procedure one is 304 corrosion resistant plates.
Solder described in this test procedure two is BFe65NiCrPSi iron-based solder sheet.
Vertical panel described in this test procedure one, through sand papering, implements surface roughening process.
Fig. 7 is test three brazing sheet fin structure joint top metallograph, Fig. 8 is test three brazing sheet fin structure joint bottom metallograph, method for welding of the present invention is used to carry out plate fin structure soldering by the known iron-based solder of selecting of Fig. 7 and Fig. 8, can obtain full plate wing joint in upper and lower both sides, its joint quality is not less than the soldered fitting that conventional plate fin structure preseting solder method for welding obtains simultaneously.
Test four: the vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure, specifically carry out according to the following steps:
One, vertical panel and two level boards are docked according to I-shaped, obtain i-beam structure and treat weldment, vertical panel thickness is 0.4mm, and vertical panel height is 3mm, and level board thickness is 0.4mm; Two, treat gap preseting solder between weldment side vertical panel and level board at i-beam structure, solder thickness is 0.08mm, if solder width is 3mm, after obtaining preseting solder, i-beam structure treats weldment; Three, with i-beam structure after preseting solder until weldment preseting solder side upper by preseting solder after i-beam structure treat that weldment puts into vacuum brazing furnace, be 1 × 10 in vacuum
-1under Pa with 10 DEG C/min from room temperature to 1060 DEG C, and be not less than 1 × 10 in vacuum
-1pa and temperature are be incubated 10min at 1060 DEG C, then are warming up to 1110 DEG C with 10 DEG C/min, and are not less than 1 × 10 in vacuum
-2pa and temperature are be incubated 25min at 1110 DEG C, then are that 10 DEG C/min is cooled to normal temperature with rate of temperature fall, obtain I-shaped structure steel fastener, namely complete the vacuum brazing of the two-sided formation brazed seam of the one-sided preseting solder of I-shaped structure.
Vertical panel described in this test procedure one is U-shaped wave-shape board, and described U-shaped wave-shape board is SPCC carbon steel.
Vertical panel height described in this test procedure one equals the vertical range of two level boards.
Level board described in this test procedure one is 304 corrosion resistant plates.
Solder described in this test procedure two is CuSn12P copper base solder sheet.
Vertical panel described in this test procedure one, through sand papering, implements surface roughening process.
Fig. 9 is test four brazing sheet fin structure joint top metallograph, Figure 10 is test four brazing sheet fin structure joint bottom metallograph, method for welding of the present invention is used to carry out plate fin structure soldering by the known copper base solder of selecting of Fig. 9 and Figure 10, can obtain full plate wing joint in upper and lower both sides, its joint quality is not less than the soldered fitting that conventional plate fin structure preseting solder method for welding obtains simultaneously.
Claims (6)
1. the vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of I-shaped structure, the vacuum brazing method that it is characterized in that the one-sided preseting solder of I-shaped structure two-sided formation brazed seam carries out according to the following steps: one, according to I-shaped by vertical panel and two level boards docking, obtain i-beam structure and treat weldment, vertical panel thickness is 0.3mm ~ 2mm, vertical panel height is 3mm ~ 15mm, and level board thickness is 0.3mm ~ 2mm; Two, gap preseting solder between weldment side vertical panel and level board is treated at i-beam structure, solder thickness is 0.03mm ~ 0.15mm, if solder width is X, vertical panel thickness is Y, then X-Y=0.1mm ~ 20mm, after obtaining preseting solder, i-beam structure treats weldment; Three, i-beam structure after preseting solder is treated that weldment puts into vacuum brazing furnace, be not less than 1 × 10 in vacuum
-2under Pa with 10 DEG C/min from room temperature to 600 ~ 700 DEG C, and be not less than 1 × 10 in vacuum
-2pa and temperature are be incubated 10min ~ 30min at 600 ~ 700 DEG C, then are warming up to 1100 ~ 1110 DEG C with 10 DEG C/min, and are not less than 1 × 10 in vacuum
-2pa and temperature are be incubated 5-35min at 1100 ~ 1110 DEG C, finally with rate of temperature fall be 8 DEG C/min ~ 12 DEG C/min is cooled to normal temperature, obtains I-shaped structure steel fastener, namely completes the vacuum brazing of the two-sided formation brazed seam of the one-sided preseting solder of I-shaped structure.
2. the vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure according to claim 1, is characterized in that the vertical panel described in step one is mild steel steel plate.
3. the vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure according to claim 1 and 2, is characterized in that the vertical panel described in step one is 430 corrosion resistant plates or SPCC carbon steel.
4. the vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure according to claim 1, is characterized in that the level board described in step one is 304 corrosion resistant plates.
5. the vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure according to claim 1, it is characterized in that the solder described in step 2 is the Ni-based soldering paste of stainless steel, stainless steel iron-based soldering paste or containing Cu amount be more than 50% stainless steel braze welding copper base solder sheet; Wherein said is containing the copper base Cu-Ni-Mn series stainless steel solder of Cu amount more than 50% or containing the copper base Cu-Sn-P series stainless steel solder of Cu amount more than 50% containing the Cu amount stainless steel braze welding copper base solder sheet that is more than 50%.
6. the vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure according to claim 1, it is characterized in that treating gap preseting solder between weldment side vertical panel and level board at i-beam structure in step 2, solder thickness is 0.08mm, if solder width is X, vertical panel thickness is Y, then X-Y=2mm ~ 12mm, after obtaining preseting solder, i-beam structure treats weldment.
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| CN201410128745.6A CN103862124B (en) | 2014-04-01 | 2014-04-01 | The vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure |
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| CN201410128745.6A CN103862124B (en) | 2014-04-01 | 2014-04-01 | The vacuum brazing method of the two-sided formation brazed seam of the one-sided preseting solder of a kind of I-shaped structure |
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| CN101839621A (en) * | 2010-03-16 | 2010-09-22 | 上海东富龙制药设备制造有限公司 | Brazing sheet layer structure of freeze dryer |
| CN102107307A (en) * | 2009-12-23 | 2011-06-29 | 沈阳黎明航空发动机(集团)有限责任公司 | Vacuum brazing process for honeycomb structure of heavy-duty combustion engine |
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2014
- 2014-04-01 CN CN201410128745.6A patent/CN103862124B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0612579A1 (en) * | 1993-02-22 | 1994-08-31 | Kanto Yakin Kogyo Kabushiki Kaisha | Brazing of oxidisable alloys |
| JP2000107857A (en) * | 1998-10-02 | 2000-04-18 | Mitsubishi Heavy Ind Ltd | Manufacture of heat exchanger and manufacturing device therefor |
| CN101391329A (en) * | 2008-11-05 | 2009-03-25 | 南京工业大学 | Vacuum brazing technique of stainless steel plate fin structure |
| CN102107307A (en) * | 2009-12-23 | 2011-06-29 | 沈阳黎明航空发动机(集团)有限责任公司 | Vacuum brazing process for honeycomb structure of heavy-duty combustion engine |
| CN101780574A (en) * | 2010-03-16 | 2010-07-21 | 上海东富龙制药设备制造有限公司 | Welding method of ribs of plate layer of freeze dryer |
| CN101839621A (en) * | 2010-03-16 | 2010-09-22 | 上海东富龙制药设备制造有限公司 | Brazing sheet layer structure of freeze dryer |
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