CN107824971A - A kind of method of galvanized steel plain sheet laser assembly solder welding - Google Patents
A kind of method of galvanized steel plain sheet laser assembly solder welding Download PDFInfo
- Publication number
- CN107824971A CN107824971A CN201710838330.1A CN201710838330A CN107824971A CN 107824971 A CN107824971 A CN 107824971A CN 201710838330 A CN201710838330 A CN 201710838330A CN 107824971 A CN107824971 A CN 107824971A
- Authority
- CN
- China
- Prior art keywords
- welding
- galvanized steel
- steel plain
- plain sheet
- laser
- 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.)
- Pending
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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
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/26—Seam welding of rectilinear seams
-
- 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
- B23K26/123—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure in an atmosphere of particular gases
-
- 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
-
- 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
- B23K26/60—Preliminary treatment
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
- B23K2101/185—Tailored blanks
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention belongs to laser welding field, more particularly to a kind of method of galvanized steel plain sheet laser assembly solder welding, comprise the following steps：A, prepare two galvanized steel plain sheets of welding, remove the oil stain of galvanized steel sheet surface and dirty；B, galvanized steel plain sheet is spliced；C, pre-welding is carried out to galvanized steel plain sheet using laser beam；D, laser welding is carried out to galvanized steel plain sheet using laser beam；E, it is heat-treated rapidly after welding, is then cooled to room temperature in atmosphere.This method for laser welding can effectively prevent zinc fume from draining the molten metal of surrounding or form bubble in commissure, solve the problems, such as weld defect caused by zinc fume.
Description
Technical field
The invention belongs to laser welding field, more particularly to a kind of method of galvanized steel plain sheet laser assembly solder welding.
Background technology
In the industrial circles such as auto industry, the excellent performance such as galvanized steel plain sheet intensity height, the low, good corrosion resistance of cost obtains
Extensive use is arrived.Laser welding process has high accuracy, high quality and speed of welding fast compared with conventional soldering techniques
Feature.Thus in auto industry field, have begun to attempt the welding for carrying out galvanized steel plain sheet using laser welding process.
In order to carry out good engagement, the iron layer of galvanized steel plain sheet needs to interpenetrate.The fusing point and boiling point of zinc are respectively 420
DEG C and 907 DEG C, they are all well below 1535 DEG C of the fusing point of iron.Therefore, mould when galvanized sheet is welded to splice
When formula receives laser irradiation, the zinc evaporated in zinc coat can drain the molten metal of surrounding or be retained in melting as bubble
In metal.This can cause the problem of various weld defects such as pit, pin hole and bubble eye.
The content of the invention
In view of this, the present invention in order to prevent zinc fume drain surrounding molten metal or commissure formation bubble,
Weld defect caused by solving the problems, such as zinc fume, it is proposed that a kind of method of galvanized steel plain sheet laser assembly solder welding, this method use
Method for laser welding quickly carries out the welding welding of galvanized steel plain sheet, and will not produce weld defect.
In order to achieve the above object, the present invention proposes following technical scheme：
A, prepare two galvanized steel plain sheets of welding, wiped using absolute alcohol and acetone, remove the oil of galvanized steel sheet surface
Stain and dirty；
B, galvanized steel plain sheet is spliced, and be fixed with frock tool；
C, pre-welding is carried out to galvanized steel plain sheet using laser beam, laser beam power is 300~700W, defocusing amount 0, prewelding
It is 2.4~4.8m/min to connect speed；
D, laser welding being carried out to galvanized steel plain sheet using laser beam, laser beam power be 1000~1500W, defocusing amount is-
0.5~+1mm, speed of welding are 1.8~3.6m/min, need inert gas as protective gas in welding process；
E, it is necessary to which the galvanized steel plain sheet after welding is placed in 150~300 DEG C of heat-treatment furnace in 1min after welding
It is heat-treated, soaking time is cooled to room temperature in atmosphere after 2~3 hours.
Further, the galvanized steel plain sheet thickness of the progress welding in the step A is 0.5~2mm, and too thin galvanized steel plain sheet exists
Step C will scaling loss, too thick galvanized steel plain sheet is difficult to penetrate.
Further, the weld seam welded in the step C in pre-welding using the side-blown needs of side-blown gas, by pre-welding laser
The zinc fume of irradiation evaporation is quickly blown away, and prevents zinc fume from being dropped in welded joints after sublimating.
Further, the side-blown gas in the step C is one kind in nitrogen or argon gas, can prevent pre-welding when
Wait and welding seam part is distributed into raw oxidation.
Further, the inert gas in the step D is one kind in nitrogen, argon gas or helium, lazy using this several class
Property gas can not only prevent that weld seam is oxidized, be also possible to prevent in laser beam welding influence laser beam plasma production
It is raw.
Further, in the step D, laser beam power 1500W, defocusing amount 0, speed of welding 3.6m, in the work
Under the conditions of skill, the speed of laser welding is fast, and caused heat affected area is small in welding process, good welding performance.
The present invention technical characterstic be：
1st, the present invention is handled using laser pre-welding, and the zinc of galvanized steel sheet surface is first heated to the boiling point of zinc with laser beam
More than, the zinc of steel surface is removed, can prevent steel surface produces zinc fume in laser beam welding to cause to be harmful to weld seam
Influence.
2nd, pre-welding processing is preheated using laser beam to galvanized steel plain sheet, can improve the grain structure of steel plate, is welded
The tissue topography for connecing rear weld seam is good.
3rd, pre-welding processing first carries out preheating with laser beam to galvanized steel plain sheet to preheat surface of steel plate, welding
During can reduce the generation of welded stress, reduce the tendency that weld seam cracks.
4th, compared to traditional the pre-heat treatment, laser welded before pretreatment speed it is fast, power consumption it is low.
Brief description of the drawings
Fig. 1 is welding point microscopic structure tissue overall picture scanning electron microscope image in embodiment 2；
Fig. 2 is welding point microscopic structure Weld pipe mill tissue scanning electron microscope image in embodiment 2.
Embodiment
Below by embodiment, the present invention is further detailed explanation：
Embodiment 1：
A, two thickness for preparing welding are 1.2mm galvanized steel plain sheets, are wiped using absolute alcohol and acetone, remove galvanized steel
The oil stain of plate surface and dirty；
B, galvanized steel plain sheet is spliced, and be fixed with frock tool；
C, pre-welding, laser beam power 300W, defocusing amount 0, speed of welding are carried out to galvanized steel plain sheet using laser beam
For 2.4m/min, pre-welding is employed nitrogen as side-blown gas；
D, laser welding being carried out to galvanized steel plain sheet using laser beam, laser beam power 1000W, defocusing amount is -0.5mm,
Speed of welding is 1.8m/min, is employed nitrogen as in welding process as protective gas；
E, after welding, the galvanized steel plain sheet after welding is placed in 150 DEG C of heat-treatment furnace be heat-treated at once, protected
Room temperature is cooled in atmosphere after the warm 3 hours time.
The operating procedure of embodiment 2~5 is same as Example 1, distinguishes in the listed parameter in table：
The welding point microstructure image for embodiment 2 after galvanized steel plain sheet welding welding as shown in Figure 1 and Figure 2,
From Fig. 1 it is observed that weld appearance is regular, heat affected area is narrow, and weld seam thing phase constitution is austenite, and crystal grain is very tiny, be compared with
Uniform isometric nucleus column crystal, as shown in Fig. 2 the microscopic structure of Weld pipe mill tissue is observed that Weld pipe mill tissue causes
It is close, the weld defects such as pit, pin hole and bubble eye are not observed completely.
Above-described is only embodiments of the invention, and the general knowledge such as known concrete structure and characteristic is not made herein in scheme
Excessive description., without departing from the structure of the invention, can be with it should be pointed out that for those skilled in the art
Several modifications and improvements are made, these should also be considered as protection scope of the present invention, and these are implemented all without the influence present invention
Effect and practical applicability.The scope of protection required by this application should be based on the content of the claims, in specification
The records such as embodiment can be used for the content for explaining claim.
Claims (6)
1. the method for kind of galvanized steel plain sheet laser assembly solder welding, it is characterised in that comprise the following steps：
A, prepare two galvanized steel plain sheets one of welding, wiped using absolute alcohol and acetone, remove the oil stain of galvanized steel sheet surface
With it is dirty；
B, galvanized steel plain sheet is spliced, and be fixed with frock tool；
C, pre-welding is carried out to galvanized steel plain sheet using laser beam, laser beam power is 300~700W, defocusing amount 0, speed of welding
For 2.4~4.8m/min；
D, laser welding is carried out to galvanized steel plain sheet using laser beam, laser beam power be 1000~1500W, defocusing amount for -0.5~
+ 1mm, speed of welding are 1.8~3.6m/min, need inert gas as protective gas in welding process；
E, carried out after welding, it is necessary to which the galvanized steel plain sheet after welding is placed in 150~300 DEG C of heat-treatment furnace in 1min
Heat treatment, soaking time are cooled to room temperature in atmosphere after 2~3 hours.
2. the method for a kind of galvanized steel plain sheet laser assembly solder welding as claimed in claim 1, it is characterised in that in the step A
The galvanized steel plain sheet thickness for carrying out welding is 0.5~2mm.
3. the method for a kind of galvanized steel plain sheet laser assembly solder welding as claimed in claim 1, it is characterised in that in the step C
Using the side-blown weld seam for needing to weld of side-blown gas in pre-welding.
4. the method for a kind of galvanized steel plain sheet laser assembly solder welding as claimed in claim 3, it is characterised in that in the step C
Side-blown gas be one kind in nitrogen or argon gas.
5. the method for a kind of galvanized steel plain sheet laser assembly solder welding as claimed in claim 1, it is characterised in that in the step D
Inert gas be one kind in nitrogen, argon gas or helium.
A kind of 6. method of galvanized steel plain sheet laser assembly solder welding as claimed in claim 5, it is characterised in that in the step D,
Laser beam power is 1500W, defocusing amount 0, speed of welding 3.6m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710838330.1A CN107824971A (en) | 2017-09-18 | 2017-09-18 | A kind of method of galvanized steel plain sheet laser assembly solder welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710838330.1A CN107824971A (en) | 2017-09-18 | 2017-09-18 | A kind of method of galvanized steel plain sheet laser assembly solder welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107824971A true CN107824971A (en) | 2018-03-23 |
Family
ID=61643330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710838330.1A Pending CN107824971A (en) | 2017-09-18 | 2017-09-18 | A kind of method of galvanized steel plain sheet laser assembly solder welding |
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| CN (1) | CN107824971A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109454327A (en) * | 2018-11-30 | 2019-03-12 | 上海航天精密机械研究所 | The laser spot welding method of titanium alloy cabin and internal boss |
| CN110682015A (en) * | 2019-08-05 | 2020-01-14 | 中国科学院金属研究所 | Method for improving appearance quality and performance of laser lap welding weld of galvanized plate |
| CN111112834A (en) * | 2018-10-30 | 2020-05-08 | 上海中科神光光电产业有限公司 | By using CO2Method for laser welding of coated metal workpiece |
| CN113458635A (en) * | 2020-03-31 | 2021-10-01 | 比亚迪股份有限公司 | Method for welding tab and cover plate and battery assembly |
| CN113769239A (en) * | 2021-10-12 | 2021-12-10 | 湖南省顺美医疗科技有限公司 | Method for manufacturing medical guide wire |
| CN113798853A (en) * | 2021-09-13 | 2021-12-17 | 江苏力腾机械有限公司 | Hardware base tailor-welding and galvanizing integrated machine for mechanical equipment |
| CN114226974A (en) * | 2021-12-29 | 2022-03-25 | 苏州迅镭激光科技有限公司 | Laser penetration welding galvanized sheet equipment and welding method |
| CN115070269A (en) * | 2022-06-02 | 2022-09-20 | 河南天元装备工程股份有限公司 | Zinc removal process for weld joint area of net rack galvanized steel pipe |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105149789A (en) * | 2015-10-28 | 2015-12-16 | 无锡汉神电气有限公司 | Angle joint laser welding technology for 0.5 mm galvanized plate |
| CN105904092A (en) * | 2016-05-03 | 2016-08-31 | 武汉钢铁股份有限公司 | Meidum- and high-carbon steel plate laser welding method and device |
| CN206277035U (en) * | 2016-12-07 | 2017-06-27 | 上海临仕激光科技有限公司 | A kind of laser soldering device of Progress in Automobile Galvanized Steel Sheets |
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- 2017-09-18 CN CN201710838330.1A patent/CN107824971A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105149789A (en) * | 2015-10-28 | 2015-12-16 | 无锡汉神电气有限公司 | Angle joint laser welding technology for 0.5 mm galvanized plate |
| CN105904092A (en) * | 2016-05-03 | 2016-08-31 | 武汉钢铁股份有限公司 | Meidum- and high-carbon steel plate laser welding method and device |
| CN206277035U (en) * | 2016-12-07 | 2017-06-27 | 上海临仕激光科技有限公司 | A kind of laser soldering device of Progress in Automobile Galvanized Steel Sheets |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111112834A (en) * | 2018-10-30 | 2020-05-08 | 上海中科神光光电产业有限公司 | By using CO2Method for laser welding of coated metal workpiece |
| CN109454327A (en) * | 2018-11-30 | 2019-03-12 | 上海航天精密机械研究所 | The laser spot welding method of titanium alloy cabin and internal boss |
| CN110682015A (en) * | 2019-08-05 | 2020-01-14 | 中国科学院金属研究所 | Method for improving appearance quality and performance of laser lap welding weld of galvanized plate |
| CN113458635A (en) * | 2020-03-31 | 2021-10-01 | 比亚迪股份有限公司 | Method for welding tab and cover plate and battery assembly |
| CN113798853A (en) * | 2021-09-13 | 2021-12-17 | 江苏力腾机械有限公司 | Hardware base tailor-welding and galvanizing integrated machine for mechanical equipment |
| CN113769239A (en) * | 2021-10-12 | 2021-12-10 | 湖南省顺美医疗科技有限公司 | Method for manufacturing medical guide wire |
| CN114226974A (en) * | 2021-12-29 | 2022-03-25 | 苏州迅镭激光科技有限公司 | Laser penetration welding galvanized sheet equipment and welding method |
| CN115070269A (en) * | 2022-06-02 | 2022-09-20 | 河南天元装备工程股份有限公司 | Zinc removal process for weld joint area of net rack galvanized steel pipe |
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Application publication date: 20180323 |
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