CN110385523A - A method of regulation layered bi-metal composite material laser melt-through weld middle layer - Google Patents
A method of regulation layered bi-metal composite material laser melt-through weld middle layer Download PDFInfo
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- CN110385523A CN110385523A CN201910683486.6A CN201910683486A CN110385523A CN 110385523 A CN110385523 A CN 110385523A CN 201910683486 A CN201910683486 A CN 201910683486A CN 110385523 A CN110385523 A CN 110385523A
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
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Abstract
A method of regulation layered bi-metal composite material laser melt-through weld middle layer applies stationary magnetic field to the path of welding of double metallic composite material, then treats welder's part using laser welding process under stationary magnetic field and carry out penetration welding, realizes penetration welding.The present invention under stationary magnetic field by carrying out laser welding, in laser beam welding, two parts occur to take horizontal velocity component as leading Marangoni convection current respectively above and below molten bath, liquid metal flows in magnetic field generates the induced current all vertical with magnetic direction and the direction of motion, induced current and magnetic field interaction, generate the Lorentz force contrary with liquid metal flows, reduce its flowing velocity, inhibit the Marangoni convection current to play a leading role in the flow behavior of molten bath, reduce the thickness of the convective exchange and middle layer between composite material base and cladding, it is final to improve weld seam cladding performance, improve welding quality.
Description
Technical field
The invention belongs to welding technology fields, and in particular to a kind of regulation layered bi-metal composite material laser melt-through weld
The method of middle layer.
Background technique
Layered bi-metal composite material is to pass through the biggish two kinds of metal materials of the differences such as intensity, fusing point, the coefficient of expansion
The techniques such as explosive welding, rolling combine, and it is multiple to reach one kind obtained from mechanical bond or metallurgical bonding intensity
Condensation material.Layered bi-metal composite material gives full play to the different characteristics of base Yu cladding different materials, obtains in many fields
It is widely applied.For example, using low-cost carbon steel as base, using the good stainless steel of corrosion resisting property as the bimetallic of cladding
Sheet composition and tubular composite material are widely applied in fields such as petroleum chemical enterprise, chemical company, nuclear industry.
Because the material structure support section still uses cheap pipe line steel, and corrosion resisting property only passes through one layer of very thin stainless steel and obtains
Arrive, save a large amount of stainless steel, get both low cost with good comprehensive performance, overall cost can be reduced to stainless steel 2/3~
3/4。
Welding technique is to influence one of the key factor that layered bi-metal composite material is promoted the use of.It is multiple in layered bi-metal
In the welding process of condensation material, due to forming the different materials thermophysical property, chemical component, organizational composition of the composite material all
It is not identical, and in addition to guaranteeing that joint mechanical property is met the requirements, it is comprehensive possessed by enough base materials also to guarantee that connector retains
Performance is closed, therefore compared to homogeneous material, technique is often difficult more.Currently, laminated composite plate welding generally passes through selection
Material that a kind of and base material and plied timber can all dissolve each other is selected as transition zone, be added to base's weld seam and cladding weld seam it
Between, it chooses suitable welding method and its base and cladding is welded respectively.A large amount of existing researches show to weld by these
Technique may be implemented the welding of layered bi-metal composite material, and welding point can reach the comprehensive performance of engineer application and want
It asks.But this welding method complex process, the base of weld seam must be respectively welded using different technique, different welding materials
Layer, transition zone and cladding, the complexity of technique lead to low welding efficiency, so that low industrial manufacture efficiency.
The method that existing research shows existing layered bi-metal composite material laser penetration welding, as shown in Figure 1, swashing
Marangoni convection current occurs respectively for two parts up and down in the welding of light penetration in molten bath, and less convection current occurs each other
The primary docking molding of layered bi-metal composite material may be implemented, greatly in the feature of exchange, the method welded by laser penetration
Reduce its process complexity greatly, improves welding efficiency.But it currently, is welded by the molding welding point of the welding method
A small amount of convective exchange still has occurred in base and cladding in termination process, interlocks mixed middle layer there are apparent base, cladding, with
Desired performance is not achieved as cladding welding point, limits the production application of this high-efficiency welding method.Therefore, from
The angle for improving connector cladding performance is set out, and a kind of method for developing regulation composite material laser melt-through weld middle layer is very
It is necessary.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of regulation composite material laser melt-through weld middle layer, to solve layer
Shape double metallic composite material laser penetration welds the problem of cladding joint performance caused by cladding joint welding middle layer declines.
To achieve the goals above, the present invention adopts the following technical scheme:
A method of regulation layered bi-metal composite material laser melt-through weld middle layer, to double metallic composite material
Path of welding applies stationary magnetic field, then treats welder's part using laser welding process under stationary magnetic field and carries out penetration welding,
Realize penetration welding.
A further improvement of the present invention lies in that magnetic direction is along plate composite wood when double metallic composite material is plate
Expect thickness direction, when double metallic composite material is tubulose, magnetic field is along tubular composite material diametrical direction.
A further improvement of the present invention lies in that realizing the application of stationary magnetic field by increasing permanent magnet or magnet exciting coil.
A further improvement of the present invention lies in that when applying magnetic field using permanent magnet, it is multiple by adjusting permanent magnet and bimetallic
Condensation material spacing reaches desired value；When using magnet exciting coil, desired value is reached by regulating power source voltage.
A further improvement of the present invention lies in that the magnetic induction intensity range in magnetic field is 50~200mT.
A further improvement of the present invention lies in that using YLS-4000 type optical fiber laser in the axial direction applied by permanent magnet
DSS2205/X65 layered bi-metal composite plate is welded under magnetic field, in composite plate two phase stainless steel DSS2205 with a thickness of
2mm, pipe line steel X65 with a thickness of 1mm, the magnetic induction intensity of the axial magnetic field applied at two phase stainless steel bottom surface is 200mT,
(1) the DSS2205/X65 layered bi-metal composite plate with a thickness of 18mm as sample base is machined to retain
Layer is with a thickness of 1mm, even if base's retaining layer and cladding collectively constitute the type I groove with a thickness of 3mm；
(2) increase N52 rubidium iron boron permanent magnet below sample, the spacing of adjusting sample lower surface makes it be applied to sample slope
Magnetic field magnetic induction intensity at mouth lower surface is 200mT；
(3) penetration welding is carried out to sample using laser welding process.
A further improvement of the present invention lies in that laser welding process are as follows: laser power 3000W, speed of welding 2.5m/
Min, defocusing amount are -1mm.
Compared with prior art, the invention has the following advantages: the present invention is by axial constant magnetic field, in constant magnetic
Carry out laser welding off field, in laser beam welding, above and below molten bath two parts occur respectively be with horizontal velocity component
Leading Marangoni convection current, liquid metal flows in magnetic field generates the induction all vertical with magnetic direction and the direction of motion
Electric current, induced current and magnetic field interaction generate the Lorentz force contrary with liquid metal flows, reduce its flowing speed
Degree inhibits the Marangoni convection current to play a leading role in the flow behavior of molten bath, keeps entire molten bath more stable, to inhibit
The liquid metal of molten bath middle layer reduces the convective exchange between composite material base and cladding in the flowing of thickness direction, reduces
The thickness of middle layer, it is final to improve weld seam cladding performance, improve welding quality.
Detailed description of the invention
Fig. 1 is that metal flow behavioural characteristic and stratiform are double golden in molten bath when layered bi-metal composite material laser penetration welds
Belong to composite structure characteristic matching schematic diagram.
Fig. 2 is to pass through permanent magnet device axial constant magnetic field schematic diagram.
Fig. 3 is to pass through magnet exciting coil device axial direction stationary magnetic field schematic diagram.
Fig. 4 is the mechanism of action schematic diagram that axial constant magnetic field influences laser weld pools.
The DSS2205/X65 layered bi-metal composite board soldering joint cross section that Fig. 5 is obtained when being application axial constant magnetic field is macro
See pattern.
Fig. 6 is the DSS2205/X65 layered bi-metal composite board soldering joint cross section macro morphology obtained when not applying magnetic field.
Specific embodiment
The present invention is described in further detail combined with specific embodiments below:
The method of a kind of regulation layered bi-metal composite material laser melt-through weld middle layer of the invention are as follows: to bimetallic
The path of welding of composite material applies stationary magnetic field, then treats welder's part using laser welding process and carries out penetration welding.Institute
The laser welding process stated refers to that the property according to composite material, thickness choose suitable power, speed of welding, defocusing amount, slope
The penetration welding to composite material may be implemented in mouth.The penetration welding, which refers to, chooses suitable welding procedure, makes to welder
Part complete penetration molding is good, and no significant defect.
Wherein, when double metallic composite material is plate, magnetic direction is along sheet composition thickness direction, when double gold
When category composite material is tubulose, magnetic field is along tubular composite material diametrical direction.
The application of stationary magnetic field is realized by increasing permanent magnet or magnet exciting coil.When applying magnetic field using permanent magnet, pass through
It adjusts permanent magnet and double metallic composite material spacing reaches desired value；When using magnet exciting coil, reached by regulating power source voltage
Desired value.
It includes following principle that the present invention, which applies the mode of stationary magnetic field and the design of magnetic induction intensity:
1. according to the shape of workpiece to be welded, the device mode of size design stationary magnetic field and position.
2. material, thickness and the boundary layer position according to composite plate determine magnetic induction intensity, i.e., guarantee magnetic induction intensity with
Workpiece features substantial match to be welded.
The magnetic induction intensity and workpiece features substantial match refers to that applied induction level should be able to
Influence of the Lorentz force for keeping identical magnetic field introduced to laser weld pools Marangoni convection current reaches desired regulation weld seam
The effect of middle layer size and ingredient reduces middle layer disappearance or thickness.
The method of regulation composite material laser penetration welding line middle layer provided by the invention is a kind of based on penetration welding
When, the stationary magnetic field of application has an impact a kind of method of proposition to the flow behavior of liquid metal in molten bath, by means of welding
The induced current that stationary magnetic field and liquid metal flows generate in the process interacts, and electromagnetic force is generated, to influence liquid
The speed of state metal inhibits the effect of the liquid metal flows in molten bath, realizes under conditions of guaranteeing that penetration welding is completed multiple
A kind of method of the regulation of reduction and weld seam middle layer that laminated gold element is lost.
The present invention increases axial constant magnetic on the basis of existing layered bi-metal composite material laser penetration welds
, increase mode is as shown in Figures 2 and 3, passes through permanent magnet or magnet exciting coil increases magnetic field.The magnetic induction intensity range in magnetic field is
50~200mT must suitably be adjusted according to workpiece material performance, size shape and welding condition to be welded, preferable to obtain
Regulating effect.
As shown in figure 4, in laser beam welding, above and below molten bath two parts occur respectively be with horizontal velocity component
Leading Marangoni convection current, liquid metal flows in magnetic field generates the induction all vertical with magnetic direction and the direction of motion
Electric current, induced current and magnetic field interaction generate the Lorentz force contrary with liquid metal flows, reduce its flowing speed
Degree inhibits the Marangoni convection current to play a leading role in the flow behavior of molten bath, keeps entire molten bath more stable, to inhibit
The liquid metal of molten bath middle layer reduces the convective exchange between composite material base and cladding in the flowing of thickness direction, reduces
The thickness of middle layer, it is final to improve weld seam cladding performance, improve welding quality.
Embodiment 1
The present embodiment is right under the axial magnetic field applied by permanent magnet using YLS-4000 type optical fiber laser
DSS2205/X65 layered bi-metal composite plate (i.e. sample) is welded, in composite plate two phase stainless steel DSS2205 with a thickness of
2mm, pipe line steel X65 with a thickness of 1mm, the magnetic induction intensity of the axial magnetic field applied at two phase stainless steel bottom surface is 200mT,
Specific operating procedure is as follows:
It (1) will be double with a thickness of the DSS2205/X65 stratiform of 18mm (base 16mm+ cladding 2mm) by the way of wire cutting
Composite metal plate is machined to base's retaining layer with a thickness of 1mm, even if base's retaining layer and cladding collectively constitute the I with a thickness of 3mm
Type groove.
(2) it before implementing butt welding to the type I groove in step (1), is polished step by step using waterproof abrasive paper test plate (panel), is gone
Fall its surface scale, and by clamping device, guarantees groove staggered edge free or misalignment very little, and without between butt-joint clearance or docking
Gap is less than laser spot diameter.
(3) increase N52 rubidium iron boron permanent magnet below sample, the spacing for adjusting remaining sample lower surface makes it be applied to examination
Magnetic field magnetic induction intensity at sample groove lower surface is 200mT, and wherein magnetic induction intensity is obtained by gaussmeter measurement.
(4) the type I groove thickness in foundation step (1) and the process experiences for having test, select welding procedure are as follows: laser
Power is 3000W, and speed of welding 2.5m/min, defocusing amount is -1mm.
(5) test plate (panel) is welded according to the welding procedure in step (4), realizes penetration welding.
Comparative example 1
Replace the test plate (panel) of material same as Example 1, structure and size, repeat step (1) in embodiment 1, step (2),
Step (4), step (5) are carried out without the penetration welding under magnetic field condition.
Metallographic observation and comparative analysis are carried out to obtained welding point, reasonability and feasibility are evaluated.
Morphology observation and comparative analysis are carried out to obtained welding point cross section, Fig. 5 is to apply axial magnetic in embodiment 1
The weld seam macro morphology obtained after, Fig. 6 are that comparative example 1 does not apply macroscopical seam center that magnetic field obtains, comparison diagram 5 and Fig. 6
It can be concluded that in DSS2205/X65 layered bi-metal composite board soldering joint, base, cladding are staggeredly mixed after applying axial magnetic field
Middle layer size is obviously reduced.It proving under axial magnetic field effect, the convective exchange between weld seam base and cladding further decreases,
Middle layer size reduces therewith.
The present embodiment is only to illustrate the method for the present invention, and technique involved in non-limiting method, parameter area, this field
Staff should all cover the other modifications made of the invention or same replacement, range that as long as it does not depart from the spirit of the invention
Among the scope of the claims of patent of the invention.
Claims (7)
1. a kind of method of regulation layered bi-metal composite material laser melt-through weld middle layer, which is characterized in that bimetallic
The path of welding of composite material applies stationary magnetic field, then treats the progress of welder's part using laser welding process under stationary magnetic field
Penetration welding is realized in penetration welding.
2. a kind of method of regulation layered bi-metal composite material laser melt-through weld middle layer according to claim 1,
It is characterized in that, magnetic direction is along sheet composition thickness direction, and bimetallic is compound when double metallic composite material is plate
When material is tubulose, magnetic field is along tubular composite material diametrical direction.
3. a kind of method of regulation layered bi-metal composite material laser melt-through weld middle layer according to claim 1,
It is characterized in that, realizing the application of stationary magnetic field by increasing permanent magnet or magnet exciting coil.
4. a kind of method of regulation layered bi-metal composite material laser melt-through weld middle layer according to claim 3,
It is characterized in that, reaching desired value by adjusting permanent magnet and double metallic composite material spacing when applying magnetic field using permanent magnet；
When using magnet exciting coil, desired value is reached by regulating power source voltage.
5. a kind of method of regulation layered bi-metal composite material laser melt-through weld middle layer according to claim 1,
It is characterized in that, the magnetic induction intensity range in magnetic field is 50~200mT.
6. a kind of method of regulation layered bi-metal composite material laser melt-through weld middle layer according to claim 1,
It is characterized in that, using YLS-4000 type optical fiber laser to DSS2205/X65 under the axial magnetic field applied by permanent magnet
Layered bi-metal composite plate is welded, two phase stainless steel DSS2205's with a thickness of 2mm, the thickness of pipe line steel X65 in composite plate
For 1mm, the magnetic induction intensity of the axial magnetic field applied at two phase stainless steel bottom surface is 200mT,
(1) the DSS2205/X65 layered bi-metal composite plate with a thickness of 18mm as sample is machined to base and retains thickness
Degree is 1mm, even if base's retaining layer and cladding collectively constitute the type I groove with a thickness of 3mm；
(2) increase N52 rubidium iron boron permanent magnet below sample, the spacing of adjusting sample lower surface is applied to it under sample groove
Magnetic field magnetic induction intensity at surface is 200mT；
(3) penetration welding is carried out to sample using laser welding process.
7. a kind of method of regulation layered bi-metal composite material laser melt-through weld middle layer according to claim 6,
It is characterized in that, laser welding process are as follows: laser power 3000W, speed of welding 2.5m/min, defocusing amount are -1mm.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230306A (en) * | 2020-02-17 | 2020-06-05 | 西安交通大学 | F/A ratio synchronous regulation and control method for bimetal penetrating laser welding complex layer tissue |
| CN111618438A (en) * | 2020-05-27 | 2020-09-04 | 南京航空航天大学 | Magnetic field assisted double-laser-TIG coupling bilateral synchronous welding device and method |
| CN112207466A (en) * | 2020-10-20 | 2021-01-12 | 中国石油天然气集团有限公司 | Welding method for double-side coated stainless steel composite plate |
| CN112222653A (en) * | 2020-10-20 | 2021-01-15 | 中国石油天然气集团有限公司 | Welding method of layered bimetal composite plate |
| CN112692434A (en) * | 2021-01-08 | 2021-04-23 | 吉林大学 | Method for preparing amorphous alloy micro concave and convex structure by nanosecond laser irradiation |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101176954A (en) * | 2007-12-07 | 2008-05-14 | 北京工业大学 | Laser electrical arc complex welding method for intensifying current magnetohydrodynamics effect |
| JP2010188350A (en) * | 2009-02-16 | 2010-09-02 | Mazda Motor Corp | Laser welding method and apparatus |
| CN103878484A (en) * | 2014-03-25 | 2014-06-25 | 西安交通大学 | Efficient butt-joint laser welding method for laminated duplex-metal composite material |
| CN105537768A (en) * | 2016-02-29 | 2016-05-04 | 温州大学 | Magnetic field-assisted laser welding device and method |
| CN106956077A (en) * | 2017-03-10 | 2017-07-18 | 南京航空航天大学 | A kind of cut deal aluminium alloy magnetic control laser welding process |
| CN108247226A (en) * | 2018-01-24 | 2018-07-06 | 北京工业大学 | A kind of laser weld pools control method based on Lorentz force |
| CN108856939A (en) * | 2018-06-27 | 2018-11-23 | 武汉理工大学 | A kind of compound molten pricker welding method in aluminium alloy/steel laser-magnetic field |
-
2019
- 2019-07-26 CN CN201910683486.6A patent/CN110385523A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101176954A (en) * | 2007-12-07 | 2008-05-14 | 北京工业大学 | Laser electrical arc complex welding method for intensifying current magnetohydrodynamics effect |
| JP2010188350A (en) * | 2009-02-16 | 2010-09-02 | Mazda Motor Corp | Laser welding method and apparatus |
| CN103878484A (en) * | 2014-03-25 | 2014-06-25 | 西安交通大学 | Efficient butt-joint laser welding method for laminated duplex-metal composite material |
| CN105537768A (en) * | 2016-02-29 | 2016-05-04 | 温州大学 | Magnetic field-assisted laser welding device and method |
| CN106956077A (en) * | 2017-03-10 | 2017-07-18 | 南京航空航天大学 | A kind of cut deal aluminium alloy magnetic control laser welding process |
| CN108247226A (en) * | 2018-01-24 | 2018-07-06 | 北京工业大学 | A kind of laser weld pools control method based on Lorentz force |
| CN108856939A (en) * | 2018-06-27 | 2018-11-23 | 武汉理工大学 | A kind of compound molten pricker welding method in aluminium alloy/steel laser-magnetic field |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111230306A (en) * | 2020-02-17 | 2020-06-05 | 西安交通大学 | F/A ratio synchronous regulation and control method for bimetal penetrating laser welding complex layer tissue |
| CN111230306B (en) * | 2020-02-17 | 2021-07-13 | 西安交通大学 | F/A ratio synchronous regulation and control method for bimetal penetrating laser welding complex layer tissue |
| CN111618438A (en) * | 2020-05-27 | 2020-09-04 | 南京航空航天大学 | Magnetic field assisted double-laser-TIG coupling bilateral synchronous welding device and method |
| CN112207466A (en) * | 2020-10-20 | 2021-01-12 | 中国石油天然气集团有限公司 | Welding method for double-side coated stainless steel composite plate |
| CN112222653A (en) * | 2020-10-20 | 2021-01-15 | 中国石油天然气集团有限公司 | Welding method of layered bimetal composite plate |
| CN112692434A (en) * | 2021-01-08 | 2021-04-23 | 吉林大学 | Method for preparing amorphous alloy micro concave and convex structure by nanosecond laser irradiation |
| CN112692434B (en) * | 2021-01-08 | 2021-09-28 | 吉林大学 | Method for preparing amorphous alloy micro concave and convex structure by nanosecond laser irradiation |
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