CN107639325A - A kind of method for welding blade and cover plate - Google Patents
A kind of method for welding blade and cover plate Download PDFInfo
- Publication number
- CN107639325A CN107639325A CN201710886426.5A CN201710886426A CN107639325A CN 107639325 A CN107639325 A CN 107639325A CN 201710886426 A CN201710886426 A CN 201710886426A CN 107639325 A CN107639325 A CN 107639325A
- Authority
- CN
- China
- Prior art keywords
- cover plate
- welding
- blade
- powder
- welded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Laser Beam Processing (AREA)
- Turbine Rotor Nozzle Sealing (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention belongs to water pump manufacturing technology field, and in particular to a kind of method welded for thin pieces blade and cover plate.During in order to solve the blade and cover plate of thin pieces to be welded using conventional soldering method, there is the problem of welding deformation is big and welding cost is high, the invention discloses a kind of method for welding blade and cover plate because heat input is high.When this method is welded and fixed to the blade and cover plate of thin pieces, blade and cover plate front are fixed temporarily first, and go out welding track in cover plate rear indicia；Then at the cover plate back side, one layer of activating agent is coated along welding track；Then being welded and fixed between blade and cover plate is completed by penetrating cover plate at the cover plate back side.When being welded and fixed using the method for the present invention to the blade and cover plate of thin pieces, heat input can be not only reduced, reduces welding deformation, and the use to electricity can be reduced, reduces welding cost.
Description
Technical field
The invention belongs to water pump manufacturing technology field, and in particular to a kind of side welded for thin pieces blade and cover plate
Method.
Background technology
Water pump extensive use in actual production and life, such as the Pai Fang ﹑ farmings of the Shu send ﹑ filthy water of life industrial water
Irrigation of thing etc..Wherein, it is necessary to which the blade in water pump and cover plate are fixed into company during the manufacturing of water pump
Connect, the quality of both connection effects directly affects the service efficiency and service life of water pump.
At present, the method the most frequently used when the blade in water pump and cover plate are fixedly connected is welding.By along leaf
The position that piece is connected with cover plate is continuously welded, and connects as one blade and cover plate.So, can not only realize blade with
The connection of cover plate, and by continuously being welded in both link positions, both is formed continuous weld in link position, keep away
Exempt from gap occur in both link positions, ensure that the efficiency of water pump.
However, when the blade for thin pieces and cover plate are welded, such as it is 1mm to protecgulum plate thickness, bonnet thickness of slab
Spend for 1.5mm, when the water pump that vane thickness is 2mm carries out the welding of blade and cover plate, protected using the inert gas tungsten electrode of routine
Although shield weldering or Laser Welding can ensure the fastness being welded and fixed between cover plate and blade, due to the thickness of cover plate and blade
Degree is too small, and heat input caused by conventional soldering method is higher, so not only results in the welding deformation of cover plate and blade
Greatly, and higher heat input can cause the increase of welding cost again.
The content of the invention
During in order to solve to weld the blade and cover plate of thin pieces using conventional soldering method, due to heat input height
The problem of welding deformation is big and welding cost is high be present, the present invention proposes a kind of method for welding blade and cover plate.The party
When method is welded and fixed to the blade and cover plate of thin pieces, following steps are specifically included：
Step S1, the front of blade and cover plate is carried out interim group to fixation, and go out welding in the rear indicia of cover plate
Track；The welding track is identical with blade and the positive contact trace of cover plate；
Step S2, at the back side of cover plate, the uniform activating agent of a layer thickness is smeared along welding track；
Step S3, at the back side of cover plate, blade and cover plate are welded and fixed along welding track.
Preferably, in the step S1, fixing groove is provided with the front of the cover plate, for inserting the blade；It is described
The shape track of fixing groove is identical with the blade and the positive contact trace of the cover plate, and the depth of the fixing groove is described
The 1/3 of cover sheet thickness.
Preferably, in the step S2, the main component of the activating agent is Al2O3Powder, MnO powder, Cr2O3Powder,
Fe2O3Powder, SiO2Powder, B2O3Powder, NaF powder, TiO2Powder.
It is further preferred that the mass percent of main component is in the activating agent：Al2O3Powder is 7%~9%,
MnO powder is 7%~9%, Cr2O3Powder is 12%~14%, Fe2O3Powder is 12%~15%, SiO2Powder be 21%~
37%, B2O3Powder is that 10%~12%, NaF powder is 10%~12%, TiO2Powder is 5%~8%.
It is further preferred that coated weight of the activating agent along welding track is 0.05g/cm.
Preferably, in the step S3, it is pointed to carry out symmetrical alternately weldering between the different welding tracks at the cover plate back side
Connect.
Preferably, in the step S3, two end points progress spot welding first to welding track is fixed, then butt welding again
The integrate with intermediate region of mark is continuously welded.
Preferably, in the step S3, protected and welded using inert gas tungsten electrode.
Preferably, in the step S3, using Laser Welding.
Using the method for present invention welding blade and cover plate, when being welded to thin pieces blade and cover plate, have with following
Beneficial effect：
1st, in the present invention, blade and cover plate front are fixed temporarily first, and goes out welding in cover plate rear indicia
Track；Then at the cover plate back side, one layer of activating agent is coated along welding track；Then leaf is completed by penetrating cover plate at the cover plate back side
Being welded and fixed between piece and cover plate.So, in the case where ensureing weldquality, by coating one layer of activating agent before welding
The heat input in welding process can be not only reduced, the deflection between blade and cover plate as caused by sweating heat is reduced, carries
The quality of high blade and cover plate welding fabrication, and reduce the use in welding process to electricity, welding cost is reduced, together
When also improve speed of welding, improve the welding efficiency to blade and cover plate.
2nd, in the present invention, when carrying out the welding between blade and cover plate by penetrating cover plate, to multistage welding track
Symmetrical alternately welding is carried out, and when being carried out along each section of welding track, two ends of welding track are carried out a little first
Solid welding is determined, and then the intermediate region of welding track is continuously welded again.So, blade and lid in welding process can be reduced
Buckling deformation between plate, make to form good weld seam between the two, ensure the welding quality to blade and cover plate.
Brief description of the drawings
Fig. 1 is welding sequence schematic diagram when being welded to multistage welding track；
Fig. 2 is the metallograph of weld seam between blade and back shroud in embodiment 1；
Fig. 3 is the metallograph of weld seam between blade and back shroud in embodiment 2；
Fig. 4 is the metallograph of weld seam between blade and back shroud in comparative example 1；
Fig. 5 is the metallograph of weld seam between blade and back shroud in comparative example 2.
Embodiment
Technical scheme is described in detail with reference to the accompanying drawings and examples.
Using the method for present invention welding blade and cover plate, concretely comprised the following steps to what thin pieces blade and cover plate were welded：
Step S1, the front of blade and cover plate to be welded is fixed temporarily, and gone out in the rear indicia of cover plate
The welding track welded to blade and cover plate.Wherein, welding track is identical with blade and the positive contact trace of cover plate.
Preferably, before carrying out interim group of blade and cover plate to fixation, set first in the front of cover plate and the number of blade
Measure identical fixing groove.Wherein, the trajectory shape of fixing groove on the cover board is identical with the contact trace between blade and cover plate, Gu
The depth for determining groove is equal to the 1/3 of cover sheet thickness size.So, when carrying out interim group to fixing to blade and cover plate, by blade
Inserting is in fixing groove, you can realizes interim group of blade and cover plate to fixation.Furthermore, it is possible to according between blade and cover plate
Fixed angle, the machining angle of fixing groove is adjusted, so as to ensure that group is to the accurate of position relationship between blade and cover plate
Degree.
Step S2, at the back side of cover plate, the uniform activating agent of a layer thickness is smeared along welding track.
Preferably, activating agent uses powder activity agent, and its main component is Al2O3Powder, MnO powder, Cr2O3Powder,
Fe2O3Powder, SiO2Powder, B2O3Powder, NaF powder and TiO2Powder.It is further preferred that main component in activating agent
Mass percent is：Al2O3Powder is that 7%~9%, MnO powder is 7%~9%, Cr2O3Powder is 12%~14%, Fe2O3
Powder is 12%~15%, SiO2Powder is 21%~37%, B2O3Powder be 10%~12%, NaF powder be 10%~
12%, TiO2Powder is 5%~8%.
In the present embodiment, first, the powder for forming activating agent is placed in stainless steel by mass percentage；Then,
Appropriate acetone is added in stainless steel, and carries out uniform stirring until forming the activating agent of pasty state；Then, will by hairbrush
The activating agent even application of pasty state is on the welding track at the cover plate back side.Wherein, in the cover plate progress for 1~1.5mm thickness
When penetrating welding, along the length direction of welding track, the coated weight of activating agent is controlled in 0.05g/cm.
Step S3, after the activating agent to be coated at the cover plate back side dries, at the back side of cover plate, cover plate is penetrated along welding track
Blade and cover plate are welded and fixed.
Preferably, along welding track carry out between blade and cover plate when being welded and fixed, adopted between multistage welding track
With symmetrically alternately sequentially being welded.So, by carrying out symmetrical alternately welding to multistage welding track, can be taken over butt welding
Gap change in journey between blade and cover plate is effectively controlled, and avoids between blade and cover plate occurring in welding process
Serious relative buckling deformation, so as to reduce the deformation quantity in welding process between blade and cover plate, ensures in blade and cover plate
Between form continuous-stable and the measured weld seam of matter, improve the welding quality to blade and cover plate.
For example, with reference to shown in Fig. 1, when being provided with six blades in the impeller of water pump, six can be formed at the back side of cover plate
Section welding track, and be 1,2,3,4,5,6 by six sections of welding track number consecutivelies along clockwise direction.Now, then by number
Welding between welding track is carried out successively for 1,4,5,2,3,6 order, so as to which the welding completed between cover plate and blade is consolidated
It is fixed.Similarly, it is same using symmetrically alternately sequentially being welded if being provided with five or seven blades in the impeller of water pump, directly
To the welding for completing final stage welding track.In addition, if the impeller of water pump is closed type structure, i.e., impeller have front shroud and
During back shroud, the welding of all seam tracks in front shroud (or back shroud) is completed first, is then overturn impeller, then it is right
All seam tracks in back shroud (or front shroud) are welded.
It is further preferred that when being welded to each section of welding track, two ends of welding track are entered first
Row spot welding is fixed, and then the intermediate region of welding track is continuously welded again.So, blade and lid can further be reduced
Along the buckling deformation in welding track direction between plate, so as to reduce the welding deformation amount between blade and cover plate, ensure to blade
With the fastness of cover plate welding.
In addition, in the present embodiment, when being welded to cover plate and blade, can both inert gas tungsten electrode be used to protect
Weldering, can also use Laser Welding.Meanwhile the cooling of welding process is carried out in welding process using water chiller, so as to welding
During caused heat input quickly absorbed, diffusion of the limitation heat on blade and cover plate, reduce and drawn by sweating heat
The blade and the deflection of cover plate risen.
Embodiment 1, weldering is protected to be welded and fixed the cover plate and blade of enclosed impeller using inert gas tungsten electrode.
In the present embodiment, cover plate and blade select 304 stainless steels, and the wherein thickness of front shroud is 1.0mm, back shroud
Thickness be 1.5mm, the thickness of blade is 2mm, and the quantity of blade is 6, so at the back side of front shroud and the back of the body of back shroud
Face forms six sections of welding tracks respectively.The composition of activating agent is 9% Al2O3, 9% MnO, 14% Cr2O3, 14%
Fe2O3, 23% SiO2, 12% B2O3, 12% NaF and 7% TiO2, and carry out 0.05g/cm's along welding track
The coating width of coating, wherein activating agent is controlled in 2mm or so.The source of welding current uses Panasonic YC-400TX, cooling dress
Put and use Panasonic YX-09KGC water chillers, welding robot uses Panasonic TA-1400 robots.Welding
During, it is 75 ° to keep the angle between welding gun and weld seam, and other welding parameters refer to table 1.
Table 1
Embodiment 2, the cover plate and blade of enclosed impeller are welded and fixed using Laser Welding.
In the present embodiment, cover plate and blade select 304 stainless steels, and the wherein thickness of front shroud is 1.0mm, back shroud
Thickness be 1.5mm, the thickness of blade is 2mm, and the quantity of blade is 6, so at the back side of front shroud and the back of the body of back shroud
Face forms six sections of welding tracks respectively.The composition of activating agent is 7% Al2O3, 7% MnO, 12% Cr2O3, 12%
Fe2O3, 37% SiO2, 10% B2O3, 10% NaF and 5% TiO2, and carry out 0.05g/cm's along welding track
The coating width of coating, wherein activating agent is controlled in 2mm or so.Laser uses TRUMPF TruDisk2002, cooling device
Using TONGFEI TFLW-2000WDR water chillers, welding robot uses STAUBLI TX200 robots.In welding process
In, it is 90 ° to keep the angle between welding gun and weld seam, and other welding parameters refer to table 2.
Table 2
Comparative example 1, the cover plate and blade of enclosed impeller are welded and fixed using method same as Example 1.
Its difference is：First, without using activating agent in comparative example 1；Second, welding parameters are adjusted, the welding after adjustment
Parameter refers to table 3.
Table 3
Comparative example 2, the cover plate and blade of enclosed impeller are welded and fixed using method same as Example 2.
Its difference is：First, without using activating agent in comparative example 2；Second, welding parameters are adjusted, the welding after adjustment
Parameter refers to table 4.
Table 4
Next, to completing what is be fixedly connected with the method for comparative example 2 with embodiment 2 and comparative example 1 using embodiment 1
Blade and cover plate carry out the metallographic structure analysis of position while welding, and metallograph corresponding to acquisition.Wherein, Fig. 2 is the middle period of embodiment 1
The metallograph of weld seam between piece and back shroud；Fig. 3 is the metallograph of weld seam between blade and back shroud in embodiment 2；Fig. 4 is pair
In ratio 1 between blade and back shroud weld seam metallograph；Fig. 5 is the metallographic of weld seam between blade and back shroud in comparative example 2
Figure.
It can be drawn by comparison diagram 2- Fig. 5：When carrying out being welded and fixed connection to blade and cover plate, either using real
Apply example 1, embodiment 2 or using comparative example 1 and the method for comparative example 2, obtain the even transition between blade and cover plate
Weld seam, and the homogeneous grain size in the welded seam area.
Next, to completing what is be fixedly connected with the method for comparative example 2 with embodiment 2 and comparative example 1 using embodiment 1
Blade and cover plate carry out macroscopical analysis of experiments of position while welding, and analysis result refers to table 5.
Table 5
With reference to shown in table 5, when carrying out being welded and fixed connection to blade and cover plate, either using embodiment 1, embodiment
2 still do not find crackle, incomplete fusion, lack of penetration, stomata be present using comparative example 1 and the method for comparative example 2, the weld seam of acquisition
And the weld defect such as slag inclusion, weld seam all have preferable quality.
Next, to completing what is be fixedly connected with the method for comparative example 2 with embodiment 2 and comparative example 1 using embodiment 1
Blade and cover plate carry out the hardness test of position while welding, and result of the test refers to table 6.
Table 6
With reference to shown in table 6, when carrying out being welded and fixed connection to blade and cover plate, either using embodiment 1, embodiment
2, still using comparative example 1 and the method for comparative example 2, obtain hardness of the hardness of weld seam than mother metal and increase, and in reality
The hardness outline that weld seam is obtained in example 1 and embodiment 2 is applied higher than the hardness that weld seam is obtained in comparative example 1 and comparative example 2.Therefore,
The weld seam obtained using embodiment 1 and the method for embodiment 2 has more preferable hardness performance.
Next, to completing what is be fixedly connected with the method for comparative example 2 with embodiment 2 and comparative example 1 using embodiment 1
Blade and cover plate carry out the Huey test of position while welding, and result of the test refers to table 7.
Table 7
With reference to shown in table 7, when carrying out being welded and fixed connection to blade and cover plate, either using embodiment 1, embodiment
2 still reach Eligibility requirements using comparative example 1 and the method for comparative example 2, the weld seam of acquisition in Huey test.
Next, to completing what is be fixedly connected with the method for comparative example 2 with embodiment 2 and comparative example 1 using embodiment 1
Blade and cover plate carry out deflection detection between the two, and testing result refers to table 8.
Table 8
With reference to shown in table 8, after completing being welded and fixed of blade and cover plate using the method for embodiment 1, blade and cover plate it
Between deflection be 0.85 °；After completing being welded and fixed of blade and cover plate using the method for embodiment 2, between blade and cover plate
Deflection be 0.70 °；After completing being welded and fixed of blade and cover plate using the method for comparative example 1, between blade and cover plate
Deflection is 3.70 °；After being welded and fixed of blade and cover plate being completed using the method for comparative example 2, the change between blade and cover plate
Shape amount is 3.10 °.Wherein, the deflection in embodiment 1 between blade and cover plate only has the anaplasia of blade and cover plate in comparative example 1
The 22% of shape amount, the deflection in embodiment 2 between blade and cover plate also only have in comparative example 2 deflection between blade and cover plate
22%.
It is to sum up shown, with reference to knowable to being analyzed table 1- tables 8 and Fig. 2-Fig. 5, thin pieces blade and cover plate are welded
When fixed, in the case where ensureing that acquisition weldquality is suitable and testing inspection is qualified, compared with using same welding method
Compared with by coating the activating agent of special component before welding, can not only substantially reducing the input heat of welding process, reduce leaf
Deflection between piece and cover plate, and the use to electricity is reduced, welding cost is reduced, but also welding speed can be improved
Degree, improve welding efficiency.
Wherein, when using the protection weldering of inert gas tungsten electrode, by coating activating agent before welding, to front shroud and bonnet
The welding current value of plate is reduced to 45A and 60A by 90A and 120A respectively, reduces 50% current value, while blade and cover plate
Between deflection be reduced to 0.85 ° by 3.70 °；During using Laser Welding, by coating activating agent before welding, to front shroud and
The laser power of bonnet plate weld is reduced to 900W and 1000W by 1700W and 1800W respectively, reduces 47% and 44% respectively,
The deflection between blade and cover plate is reduced to 0.70 ° by 3.10 ° simultaneously.So, by coating special component before welding
Activating agent, the heat input of welding process is not only greatly reduced, reduced due to welding between thermally-induced blade and cover plate
Deflection, welding quality is improved, and reduce the use to electricity, reduce welding cost.
In addition, when protecting weldering using inert gas tungsten electrode, by coating activating agent before welding, to front shroud and back shroud
Speed of welding 100mm/s and 90mm/s are promoted to by 40mm/s and 30mm/s respectively, 1.5 times and 1.3 times have been respectively increased；Adopt
During with Laser Welding, by coating activating agent before welding, to the speed of welding of front shroud and back shroud respectively by 20mm/s and
18mm/s is promoted to 30mm/s and 25mm/s, and 0.5 times and 0.4 times has been respectively increased, and so as to improve the speed of welding, improves
To the welding efficiency of blade and cover plate.
Claims (9)
- A kind of 1. method for welding blade and cover plate, it is characterised in that this method specifically includes following steps：Step S1, by the progress of the front of blade and cover plate, interim group goes out welding track to fixation, and in the rear indicia of cover plate； The welding track is identical with blade and the positive contact trace of cover plate；Step S2, at the back side of cover plate, the uniform activating agent of a layer thickness is smeared along welding track；Step S3, at the back side of cover plate, blade and cover plate are welded and fixed along welding track.
- 2. the method for welding blade according to claim 1 and cover plate, it is characterised in that in the step S1, described The front of cover plate is provided with fixing groove, for inserting the blade；The shape track of the fixing groove and the blade and the lid The positive contact trace of plate is identical, and the depth of the fixing groove is the 1/3 of the cover sheet thickness.
- 3. the method for welding blade according to claim 1 and cover plate, it is characterised in that in the step S2, the work The main component of property agent is Al2O3Powder, MnO powder, Cr2O3Powder, Fe2O3Powder, SiO2Powder, B2O3Powder, NaF powder, TiO2Powder.
- 4. the method for welding blade according to claim 3 and cover plate, it is characterised in that main component in the activating agent Mass percent be：Al2O3Powder is that 7%~9%, MnO powder is 7%~9%, Cr2O3Powder is 12%~14%, Fe2O3Powder is 12%~15%, SiO2Powder is 21%~37%, B2O3Powder be 10%~12%, NaF powder be 10%~ 12%, TiO2Powder is 5%~8%.
- 5. the method for welding blade according to claim 4 and cover plate, it is characterised in that the activating agent is along welding track Coated weight be 0.05g/cm.
- 6. the method for welding blade according to claim 1 and cover plate, it is characterised in that in the step S3, contraposition Symmetrical alternately welding is carried out between the different welding tracks at the cover plate back side.
- 7. the method for welding blade according to claim 1 and cover plate, it is characterised in that in the step S3, first Two end points progress spot welding to welding track is fixed, and then the intermediate region of welding track is continuously welded again.
- 8. the method for the welding blade and cover plate according to any one in claim 1-7, it is characterised in that in the step In rapid S3, protected and welded using inert gas tungsten electrode.
- 9. the method for the welding blade and cover plate according to any one in claim 1-7, it is characterised in that in the step In rapid S3, using Laser Welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710886426.5A CN107639325B (en) | 2017-09-27 | 2017-09-27 | Method for welding blade and cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710886426.5A CN107639325B (en) | 2017-09-27 | 2017-09-27 | Method for welding blade and cover plate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107639325A true CN107639325A (en) | 2018-01-30 |
| CN107639325B CN107639325B (en) | 2020-07-03 |
Family
ID=61113513
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710886426.5A Active CN107639325B (en) | 2017-09-27 | 2017-09-27 | Method for welding blade and cover plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107639325B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128581A (en) * | 2018-10-26 | 2019-01-04 | 江阴市高拓精密模具有限公司 | A kind of silicon steel sheet welding activating agent and application method |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4446193A1 (en) * | 1994-12-23 | 1996-06-27 | Grundfos As | Method of mfg. centrifugal pumps |
| CN1439479A (en) * | 2002-03-29 | 2003-09-03 | 甘肃工业大学 | Active agent for stainless steel tungsten argon arc welding |
| CN1600485A (en) * | 2004-10-20 | 2005-03-30 | 南通金通灵风机有限公司 | Method for welding impellers in high strength and eliminating stress of impellers |
| CN101975187A (en) * | 2010-11-12 | 2011-02-16 | 浙江利欧股份有限公司 | Intermittently welded impeller and welding method thereof |
| CN102009274A (en) * | 2009-09-04 | 2011-04-13 | 中国科学院沈阳自动化研究所 | T-shaped joint single-beam laser and TIG (Tungsten Insert gas) compound single-sided welding and double-sided shaping method |
| CN102922137A (en) * | 2012-11-13 | 2013-02-13 | 常州太平洋电力设备(集团)有限公司 | Laser no-filling penetration weld seal welding process for T-shaped welding head of steel plate |
| CN103894758A (en) * | 2014-03-31 | 2014-07-02 | 南昌航空大学 | Activator for nickel-base superalloy laser welding and application method thereof |
| CN104607849A (en) * | 2015-02-02 | 2015-05-13 | 山东双轮股份有限公司 | Stainless steel impeller welding technology and tool for electron-beam welding machine |
| CN105945488A (en) * | 2016-06-21 | 2016-09-21 | 安徽舜禹水务股份有限公司 | Water pump impeller welding fixture |
| CN205673815U (en) * | 2016-06-21 | 2016-11-09 | 安徽舜禹水务股份有限公司 | A kind of water pump guide vane welding tooling |
| CN106216885A (en) * | 2016-08-21 | 2016-12-14 | 飞潮（无锡）过滤技术有限公司 | A kind of special welding activating agent of rustless steel weldering |
-
2017
- 2017-09-27 CN CN201710886426.5A patent/CN107639325B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4446193A1 (en) * | 1994-12-23 | 1996-06-27 | Grundfos As | Method of mfg. centrifugal pumps |
| CN1439479A (en) * | 2002-03-29 | 2003-09-03 | 甘肃工业大学 | Active agent for stainless steel tungsten argon arc welding |
| CN1600485A (en) * | 2004-10-20 | 2005-03-30 | 南通金通灵风机有限公司 | Method for welding impellers in high strength and eliminating stress of impellers |
| CN102009274A (en) * | 2009-09-04 | 2011-04-13 | 中国科学院沈阳自动化研究所 | T-shaped joint single-beam laser and TIG (Tungsten Insert gas) compound single-sided welding and double-sided shaping method |
| CN101975187A (en) * | 2010-11-12 | 2011-02-16 | 浙江利欧股份有限公司 | Intermittently welded impeller and welding method thereof |
| CN102922137A (en) * | 2012-11-13 | 2013-02-13 | 常州太平洋电力设备(集团)有限公司 | Laser no-filling penetration weld seal welding process for T-shaped welding head of steel plate |
| CN103894758A (en) * | 2014-03-31 | 2014-07-02 | 南昌航空大学 | Activator for nickel-base superalloy laser welding and application method thereof |
| CN104607849A (en) * | 2015-02-02 | 2015-05-13 | 山东双轮股份有限公司 | Stainless steel impeller welding technology and tool for electron-beam welding machine |
| CN105945488A (en) * | 2016-06-21 | 2016-09-21 | 安徽舜禹水务股份有限公司 | Water pump impeller welding fixture |
| CN205673815U (en) * | 2016-06-21 | 2016-11-09 | 安徽舜禹水务股份有限公司 | A kind of water pump guide vane welding tooling |
| CN106216885A (en) * | 2016-08-21 | 2016-12-14 | 飞潮（无锡）过滤技术有限公司 | A kind of special welding activating agent of rustless steel weldering |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109128581A (en) * | 2018-10-26 | 2019-01-04 | 江阴市高拓精密模具有限公司 | A kind of silicon steel sheet welding activating agent and application method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107639325B (en) | 2020-07-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Huang | Effects of shielding gas composition and activating flux on GTAW weldments | |
| Chandrasekar et al. | Investigation on un-peened and laser shock peened dissimilar weldments of Inconel 600 and AISI 316L fabricated using activated-TIG welding technique | |
| Korra et al. | Multi-objective optimization of activated tungsten inert gas welding of duplex stainless steel using response surface methodology | |
| EP2508290B1 (en) | Butt welded joint and method for manufacturing same | |
| CN107717224A (en) | The processing method of the hollow lightweight aerofoil of titanium alloy | |
| CN105345233B (en) | Middle manganese wear-resistant steel and Q345B low-alloy steel gas metal-arc welding techniques | |
| CN101987396A (en) | Zirconium-based bulk amorphous alloy laser welding method and welding structure | |
| CN106425100A (en) | Double-sided laser titanium-steel clad plate full penetration welding method based on transition layer control | |
| Zhang et al. | Microstructure and performance of hybrid laser-arc welded 40 mm thick 316 L steel plates | |
| Liu et al. | Activated flux tungsten inert gas welding of 8 mm-thick AISI 304 austenitic stainless steel | |
| CN107498203A (en) | A kind of electron beam welding and laser gain material manufacture composite connecting method | |
| CN103521897A (en) | Method for butt joint of stainless steel plate with thickness of 12mm | |
| CN104759739A (en) | Compound welding process of railway vehicle box beam | |
| CN107639325A (en) | A kind of method for welding blade and cover plate | |
| CN112255180A (en) | Method for rapidly and nondestructively measuring dilution rate of surfacing | |
| JP4155074B2 (en) | Stainless steel material containing B and method for producing the same | |
| CN101554690B (en) | Fusing agent used for stainless A-TIG welding and using method thereof | |
| CN103231160B (en) | Fusion welding process for iron and aluminum-base alloy and stainless steel by taking Fe-Cr-Ni alloy as filling material | |
| CN100391680C (en) | Laser strengthening process for metal leaf | |
| Iordachescu et al. | Recent achievements and trends in laser welding of thin plates | |
| CN110666275A (en) | Tailor-welding manufacturing method of aluminum or aluminum alloy coating hot-formed steel | |
| Kanaujia et al. | Optimization of tensile strength of AISI304 stainless steel and copper using Nd: YAG laser welding | |
| Sicong et al. | Effect of N2 shielding gas flow rate on microstructure and weld surface corrosion resistance of high nitrogen steel by laser-arc hybrid welding | |
| CN109483088A (en) | Weld back-protective agent and preparation method thereof and the application in deeply molten TIG weld | |
| CN110900038B (en) | Welding flux and process for laser welding of hot formed steel |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |