CN104117749B - A kind of rewelding method of aluminium alloy sealed welding seam - Google Patents
A kind of rewelding method of aluminium alloy sealed welding seam Download PDFInfo
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- CN104117749B CN104117749B CN201410396792.9A CN201410396792A CN104117749B CN 104117749 B CN104117749 B CN 104117749B CN 201410396792 A CN201410396792 A CN 201410396792A CN 104117749 B CN104117749 B CN 104117749B
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- solder joint
- rewelding
- joint defect
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- 238000003466 welding Methods 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 27
- 229910000838 Al alloy Inorganic materials 0.000 title claims abstract description 12
- 229910000679 solder Inorganic materials 0.000 claims abstract description 101
- 230000007547 defect Effects 0.000 claims abstract description 80
- 238000002156 mixing Methods 0.000 claims abstract description 38
- 238000003756 stirring Methods 0.000 claims abstract description 16
- 238000004140 cleaning Methods 0.000 claims abstract description 8
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 238000003780 insertion Methods 0.000 claims abstract description 5
- 230000037431 insertion Effects 0.000 claims abstract description 5
- 238000001514 detection method Methods 0.000 claims abstract description 4
- 238000012958 reprocessing Methods 0.000 claims abstract description 4
- 239000000126 substance Substances 0.000 claims abstract description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 8
- 229910052786 argon Inorganic materials 0.000 claims description 4
- 238000012797 qualification Methods 0.000 abstract description 9
- 238000002844 melting Methods 0.000 description 12
- 230000008018 melting Effects 0.000 description 12
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 238000005219 brazing Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
Classifications
-
- 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
- B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
- B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The present invention relates to the rewelding method of a kind of aluminium alloy sealed welding seam, it comprises the following steps: S1, position according to solder joint defect, the starting point of mark solder joint defect and end point; S2, selection mixing needle; S3, the starting point marking rewelding, fold back point and end point; S4, cleaning: use machinery or the fifth wheel such as greasy dirt, impurity between chemical method cleaning rewelding starting point and end point and in surrounding 20mm width range; S5, the rewelding of employing friction stir welding: mixing needle is inserted workpiece from rewelding starting point, the degree of depth of shaft shoulder insertion workpiece is no more than the allowance of workpiece, then carries out friction stir welding according to the track that step S3 determines; S6, detection: detect reprocessing weld seam, if solder joint still leaks, then repeat step S1 ~ S5, until qualified.The invention has the advantages that: technical process is simple, rewelding efficiency is high and qualification rate is high.
Description
Technical field
The present invention relates to welding field, particularly a kind of rewelding method of aluminium alloy sealed welding seam.
Background technology
Soldering is the solder utilizing liquidus curve lower than mother metal solidus, at the temperature lower than mother metal solidus higher than solder liquidus curve, utilize liquid solder at mother metal moistened surface, sprawl and joint filling in mother metal gap, mutually dissolve and diffusion with mother metal, realize the welding method connected between part.Compared with other welding method soldering have be out of shape little, joint is smooth, fine and close, usual clamped one time can realize the welding of all weld seams, production efficiency high, be applicable to very much component that is accurate, complicated and that be made up of different materials, application widely.But inconsistent because of mother metal and the impurity of solder and the inhomogeneities of tissue and play movement and joint mother metal surface state in industrial production, solder joint inevitably there will be pore, be mingled with and the shortcoming such as incomplete penetration, causes strength of joint and compactness to decline.
At present, brazing defect mainly adopts melting method to carry out rewelding, as argon tungsten-arc welding, metal argon arc welding, Laser Welding and electron beam welding etc.From the foregoing, brazing temperature is between the liquidus curve and the solidus of mother metal of solder, and melting temperature is then higher than the liquidus curve of mother metal, so the melting temperature of mother metal of the same race usually can far above the liquidus curve of solder.When adopting melting method to carry out rewelding to brazing defect, the solder on the one hand in former solder joint can participate in the metallurgical reaction of liquid state molten pool as impurity; On the other hand, the temperature in melting molten bath, far above the liquidus curve of solder forming brazed seam, can cause the solder reflow in the adjacent area brazed seam of molten bath and loss during rewelding.Even if so select when adopting melting method to carry out rewelding to solder joint the operating personnel that level of skill is very high, the qualification rate of its rewelding is usual also very low.
Summary of the invention
The object of the invention is to the shortcoming overcoming prior art, provide that a kind of technical process is simple, rewelding efficiency is high and the rewelding method of the aluminium alloy sealed welding that qualification rate is high seam.
Object of the present invention is achieved through the following technical solutions: a kind of rewelding method of aluminium alloy sealed welding seam, and it comprises the following steps:
S1, position according to solder joint defect, the starting point of mark solder joint defect and end point;
S2, selection mixing needle: the exterior contour of mixing needle is greater than the gap of welding point, and the length of mixing needle is not less than the distance of solder joint vertical direction, and is not more than whole by the thickness of rewelding workpiece;
S3, the starting point marking rewelding, fold back point and end point:
A, when solder joint defect end point or when closing on the edge of work, then rewelding end point is that the intersection point of solder joint defect starting point and solder joint defect end point line or its extended line and the edge of work offsets 0.5 times ~ 1 times mixing needle largest contours distance along solder joint defect starting point and solder joint defect end point line direction, and rewelding starting point is that solder joint defect starting point offsets along solder joint defect end point and solder joint defect starting point line direction the largest contours distance being not less than mixing needle;
B, when solder joint defect starting point or when closing on the edge of work, its rewelding starting point is that the intersection point of solder joint defect end point and solder joint defect starting point line or its extended line and the edge of work offsets 0.5 times ~ 1 times mixing needle largest contours distance along solder joint defect end point and solder joint defect starting point line direction, and rewelding end point is that solder joint defect end point offsets along solder joint defect starting point and solder joint defect end point line direction the largest contours distance being not less than mixing needle;
C, when the solder joint defect end-point distances edge of work exceedes the largest contours distance of mixing needle, then rewelding starting point is that solder joint defect starting point offsets along solder joint defect end point and solder joint defect starting point line direction the largest contours distance being not less than mixing needle, rewelding switch-back point is that solder joint defect end point offsets along solder joint defect starting point and solder joint defect end point line direction the largest contours distance being not less than mixing needle, rewelding end point is between rewelding starting point and switch-back point, and distance rewelding starting point and switch-back point distance are all not less than the largest contours distance of mixing needle,
S4, cleaning: use machinery or greasy dirt, impurity between chemical method cleaning workpiece rewelding starting point and end point and in surrounding 20mm width range;
S5, the rewelding of employing friction stir welding: mixing needle is inserted workpiece from rewelding starting point, the degree of depth of shaft shoulder insertion workpiece is no more than the allowance of workpiece, then carries out friction stir welding according to the track that step S3 determines;
S6, detection: detect reprocessing weld seam, if solder joint still leaks, then repeat step S1 ~ S5, until qualified.
A step with argon tungsten-arc welding repair welding keyhole is also comprised after described step S5.
The present invention has the following advantages:
1, rewelding qualification rate is high, and does not limit by rewelding number of times, and melting not only to reprocess qualification rate low, and also have number of rewelding restriction, as standard HB5375 is defined in same position I, II level Weld Seam Repairation weldering number of times must not more than 3 times.
2, can reprocess weld seam local location after friction stir welding rewelding, as melting is carried out in the positions such as rewelding keyhole, and its qualification rate is high more than directly carrying out melting qualification rate on former solder joint.
3, equipment and process process is simple, and operating personnel's level of skill requires low.
4, rewelding efficiency is high, the cycle is short, cost is low.
Detailed description of the invention
The present invention will be further described below, but protection scope of the present invention is not limited to the following stated.
A rewelding method for aluminium alloy sealed welding seam, it comprises the following steps:
S1, position according to solder joint defect, the starting point of mark solder joint defect and end point;
S2, selection mixing needle: the exterior contour of mixing needle is greater than the gap of welding point, and the length of mixing needle is not less than the distance of solder joint vertical direction, and is not more than whole by the thickness of rewelding workpiece;
S3, the starting point marking rewelding, fold back point and end point:
A, when solder joint defect end point or when closing on the edge of work, then rewelding end point is that the intersection point of solder joint defect starting point and solder joint defect end point line or its extended line and the edge of work offsets 0.5 times ~ 1 times mixing needle largest contours distance along solder joint defect starting point and solder joint defect end point line direction, and rewelding starting point is that solder joint defect starting point offsets along solder joint defect end point and solder joint defect starting point line direction the largest contours distance being not less than mixing needle;
B, when solder joint defect starting point or when closing on the edge of work, its rewelding starting point is that the intersection point of solder joint defect end point and solder joint defect starting point line or its extended line and the edge of work offsets 0.5 times ~ 1 times mixing needle largest contours distance along solder joint defect end point and solder joint defect starting point line direction, and rewelding end point is that solder joint defect end point offsets along solder joint defect starting point and solder joint defect end point line direction the largest contours distance being not less than mixing needle;
C, when the solder joint defect end-point distances edge of work exceedes the largest contours distance of mixing needle, then rewelding starting point is that solder joint defect starting point offsets along solder joint defect end point and solder joint defect starting point line direction the largest contours distance being not less than mixing needle, rewelding switch-back point is that solder joint defect end point offsets along solder joint defect starting point and solder joint defect end point line direction the largest contours distance being not less than mixing needle, rewelding end point is between rewelding starting point and switch-back point, and distance rewelding starting point and switch-back point distance are all not less than the largest contours distance of mixing needle,
S4, cleaning: use machinery or greasy dirt, impurity between chemical method cleaning workpiece rewelding starting point and end point and in surrounding 20mm width range;
S5, the rewelding of employing friction stir welding: mixing needle is inserted workpiece from rewelding starting point, the degree of depth of shaft shoulder insertion workpiece is no more than the allowance of workpiece, then carries out friction stir welding according to the track that step S3 determines;
S6, detection: detect reprocessing weld seam, if solder joint still leaks, then repeat step S1 ~ S5, until qualified.
Friction stir welding is a kind of solid-state bonding process proposed in 1991 by Britain's institute of welding, compared with traditional melt welding method, it is low that friction stir welding has welding temperature, and crystal grain is tiny, residual stress and the distortion advantage such as little after good mechanical properties and welding.When agitating friction is welded in welding aluminum alloy, its welding temperature is not only lower than the solidus of mother metal, also lower than the liquidus curve of solder, so have following technical characterstic when carrying out rewelding with friction stir welding to aluminium alloy brazing seam:
1) can not molten bath be formed when stitching with friction stir welding rewelding aluminium alloy brazing, the weld defect relevant with melting can not be produced.
2) welding temperature is lower than the liquidus curve of solder, can not cause remelting and the loss of solder around weld seam.
3) melting can be carried out on the weld seam of rewelding after friction stir welding rewelding, and its qualification rate is high more than directly carrying out melting qualification rate on former solder joint.
4) friction stir welding has the effect of refined grain structure, and therefore its seam organization is finer and close, and mechanical property is more excellent.
5) process and welding process simple.
In friction stir welding process, if rewelding starting point is not on workpiece, then need places one in initial point position and be similar to and be in the extraction test plate (panel) of same level with thickness of workpiece, so that determine shaft shoulder insertion depth.
Claims (2)
1. a rewelding method for aluminium alloy sealed welding seam, is characterized in that: it comprises the following steps:
S1, position according to solder joint defect, the starting point of mark solder joint defect and end point;
S2, selection mixing needle: the exterior contour of mixing needle is greater than the gap of welding point, and the length of mixing needle is not less than the distance of solder joint vertical direction, and is not more than whole by the thickness of rewelding workpiece;
S3, the starting point marking rewelding, fold back point and end point:
A, when solder joint defect end point or when closing on the edge of work, then rewelding end point is that the intersection point of solder joint defect starting point and solder joint defect end point line or its extended line and the edge of work offsets 0.5 times ~ 1 times mixing needle largest contours distance along solder joint defect starting point and solder joint defect end point line direction, and rewelding starting point is that solder joint defect starting point offsets along solder joint defect end point and solder joint defect starting point line direction the largest contours distance being not less than mixing needle;
B, when solder joint defect starting point or when closing on the edge of work, its rewelding starting point is that the intersection point of solder joint defect end point and solder joint defect starting point line or its extended line and the edge of work offsets 0.5 times ~ 1 times mixing needle largest contours distance along solder joint defect end point and solder joint defect starting point line direction, and rewelding end point is that solder joint defect end point offsets along solder joint defect starting point and solder joint defect end point line direction the largest contours distance being not less than mixing needle;
C, when the solder joint defect end-point distances edge of work exceedes the largest contours distance of mixing needle, then rewelding starting point is that solder joint defect starting point offsets along solder joint defect end point and solder joint defect starting point line direction the largest contours distance being not less than mixing needle, rewelding switch-back point is that solder joint defect end point offsets along solder joint defect starting point and solder joint defect end point line direction the largest contours distance being not less than mixing needle, rewelding end point is between rewelding starting point and switch-back point, and distance rewelding starting point and switch-back point distance are all not less than the largest contours distance of mixing needle,
S4, cleaning: use machinery or greasy dirt, impurity between chemical method cleaning workpiece rewelding starting point and end point and in surrounding 20mm width range;
S5, the rewelding of employing friction stir welding: mixing needle is inserted workpiece from rewelding starting point, the degree of depth of shaft shoulder insertion workpiece is no more than the allowance of workpiece, then carries out friction stir welding according to the track that step S3 determines;
S6, detection: detect reprocessing weld seam, if solder joint still leaks, then repeat step S1 ~ S5, until qualified.
2. the rewelding method of a kind of aluminium alloy sealed welding seam according to claim 1, is characterized in that: also comprise a step with argon tungsten-arc welding repair welding keyhole after described step S5.
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| CN201410396792.9A CN104117749B (en) | 2014-08-13 | 2014-08-13 | A kind of rewelding method of aluminium alloy sealed welding seam |
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| CN104117749B true CN104117749B (en) | 2016-03-02 |
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| CN105033581A (en) * | 2015-07-10 | 2015-11-11 | 西北矿冶研究院 | Method for compounding copper and aluminum dissimilar metal of zinc electrolysis cathode conductive head |
| JP7422337B2 (en) * | 2019-06-14 | 2024-01-26 | パナソニックＩｐマネジメント株式会社 | Repair welding control device and repair welding control method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1177667C (en) * | 1999-05-26 | 2004-12-01 | 株式会社日立制作所 | Repair methods of friction stir joints |
| JP2008221294A (en) * | 2007-03-14 | 2008-09-25 | Hitachi Ltd | Repair method and repair device for welded part |
| JP2009106978A (en) * | 2007-10-30 | 2009-05-21 | Hitachi Ltd | Repair method by friction stir welding |
| CN101966621A (en) * | 2010-11-04 | 2011-02-09 | 哈尔滨工业大学 | Electric arc preheating repair welding method for stir friction plug |
| JP2013107129A (en) * | 2011-11-24 | 2013-06-06 | Hitachi Ltd | Method for repairing welded part |
| CN103659184A (en) * | 2013-12-05 | 2014-03-26 | 湖北三江航天红阳机电有限公司 | Method for welding heat dissipation base plates |
| CN103785942A (en) * | 2014-01-28 | 2014-05-14 | 长春轨道客车股份有限公司 | Aluminum alloy stirring friction welding defect repairing method |
-
2014
- 2014-08-13 CN CN201410396792.9A patent/CN104117749B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1177667C (en) * | 1999-05-26 | 2004-12-01 | 株式会社日立制作所 | Repair methods of friction stir joints |
| JP2008221294A (en) * | 2007-03-14 | 2008-09-25 | Hitachi Ltd | Repair method and repair device for welded part |
| JP2009106978A (en) * | 2007-10-30 | 2009-05-21 | Hitachi Ltd | Repair method by friction stir welding |
| CN101966621A (en) * | 2010-11-04 | 2011-02-09 | 哈尔滨工业大学 | Electric arc preheating repair welding method for stir friction plug |
| JP2013107129A (en) * | 2011-11-24 | 2013-06-06 | Hitachi Ltd | Method for repairing welded part |
| CN103659184A (en) * | 2013-12-05 | 2014-03-26 | 湖北三江航天红阳机电有限公司 | Method for welding heat dissipation base plates |
| CN103785942A (en) * | 2014-01-28 | 2014-05-14 | 长春轨道客车股份有限公司 | Aluminum alloy stirring friction welding defect repairing method |
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