CN107866634A - A kind of austenitic stainless steel thin plate butt welding process - Google Patents
A kind of austenitic stainless steel thin plate butt welding process Download PDFInfo
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- CN107866634A CN107866634A CN201711014839.0A CN201711014839A CN107866634A CN 107866634 A CN107866634 A CN 107866634A CN 201711014839 A CN201711014839 A CN 201711014839A CN 107866634 A CN107866634 A CN 107866634A
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- welding
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Classifications
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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
-
- 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
- B23K26/36—Removing material
- B23K26/40—Removing material taking account of the properties of the material involved
-
- 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
Abstract
The present invention relates to a kind of austenitic stainless steel thin plate butt welding process, including five weld preparation, clamping, solid point, laser bottoming welding and formal laser welding steps, realize austenitic stainless steel butt welding, the welding procedure, using laser bottoming welding can not only solve weld seam because assembled difference gap abnormity into collapse problem, piece unfitness of butt joint can also be greatly reduced, obtain good weld seam, and great role can be played in the processing of close part after welding is kept on the basis of ensureing its Weld Performance without deformation.
Description
Technical field
Ben Famingshejishi body stainless steel butt welding process, more particularly to a kind of austenitic stainless steel thin plate butt welding
Technique.
Background technology
Austenitic stainless steel, there is that corrosion resistance is good, nonmagnetic, there is higher toughness and plasticity, be widely used in
The field such as non-pressure vessel and bioengineering, Chemical Engineering, aviation, nuclear industry；In the last few years, the application of stainless sheet steel
More extensively, it is more and more in the application of Aero-Space, electronic device, medicine equipment, nuclear industry, machinery instrument etc.；Cause
This, the encapsulation and welding of ultra-thin stainless steel product become particularly significant, and traditional welding method is difficult to ensure that being welded into for thin plate
Form quality amount.
The content of the invention
The applicant is directed to disadvantage mentioned above, has carried out Improvement, there is provided a kind of austenitic stainless steel thin plate butt welding
Technique.
The technical solution adopted in the present invention is as follows：
A kind of austenitic stainless steel thin plate butt welding process, comprises the following steps：
(1) weld preparation：
A. stainless sheet steel is taken, observes its surface to be welded, it is desirable to smooth no scuffing, the defects of indenture；Will if be unsatisfactory for
Ask need with sand paper polish solder side, and polish when it is noted that the depth of parallelism of solder side, can not be polished into cambered surface；
B. to-be-welded region need to be cleared up by having polished, with acetone by the thorough wiped clean of solder side, the oil in welded seam area 5mm
Dirt etc. is also required to clean out；
(2) clamping：Stainless sheet steel to be welded is compressed with fixture clamping, specific connecting method is two pieces of stainless sheet steels
Parallel splicing, it is desirable to surfacing staggered edge free, and commissure assembly gap cannot be greater than 0.05mm；
(3) solid point：Each one point of solid point among weld seam both ends and weld seam, solid point parameter be 300~500W of solid point power,
The solid point time is 0.1~0.3s, defocusing amount is -3~+3；
(4) laser bottoming is welded：Because 0.3-0.9mm stainless steel is than relatively thin, material is less in molten bath during welding, slightly
Gap, which may result in, to be stayed and forms defect, so needing to carry out laser bottoming welding before carrying out formal laser welding, adjusts laser
The parameter of welding machine, the welding parameter of the laser bottoming welding are that 500~600W of bonding power, defocusing amount are+4~+8, welding
Speed is 2500~3000mm/min, protective gas 99.9%Ar, shield gas flow rate are 10~15L/min, protective gas side
To being the position of entering 1~2mm behind direction before welding, bottoming welding is carried out after the completion of regulation；
(5) welding parameter of formal laser welding is that 900~1000W of bonding power, defocusing amount are+4~+8, welding speed
Spend for 2500~3000mm/min, protective gas 99.9%Ar, shield gas flow rate are 10~15L/min, protective gas direction
It is the position for entering 1~2mm behind direction before welding, carries out formal laser welding after the completion of regulation, has prevented outside during welding
Airflow influence welds.
Further improvement as above-mentioned technical proposal：
Clear up to-be-welded region and alcohol wipe can be used by the thorough wiped clean of solder side, the greasy dirt in welded seam area 5mm
Etc. being also required to clean out, it is necessary to carry out further work again after alcohol thoroughly volatilization after the completion of alcohol wipe.
Beneficial effects of the present invention are as follows：1) welded by preceding road laser bottoming, can not only solve weld seam because between assembly
What gap difference was formed collapses problem, and piece unfitness of butt joint can also be greatly reduced, obtain good weld seam；2) it is thin in soldering stainless steel
Very your writing can be played in the processing of close part after welding is kept on the basis of ensureing its Weld Performance without deformation during plate
With.
Embodiment
Embodiment one
The present embodiment is to be based on 0.6mm austenitic stainless steel butt welding process, is comprised the following steps：
(1) weld preparation：
A. 0.6mm stainless sheet steels are taken, observe its surface to be welded, it is desirable to smooth no scuffing, the defects of indenture；It is if discontented
Foot require need with sand paper polish solder side, and polish when it is noted that the depth of parallelism of solder side, can not be polished into cambered surface；
B. to-be-welded region need to be cleared up by having polished, with acetone by the thorough wiped clean of solder side, the oil in welded seam area 5mm
Dirt etc. is also required to clean out；
(2) clamping：0.6mm stainless sheet steels to be welded are compressed with fixture clamping, specific connecting method is two pieces stainless
The parallel splicing of steel sheet, it is desirable to surfacing staggered edge free, and commissure assembly gap cannot be greater than 0.05mm；
(3) solid point：Each one point of solid point among weld seam both ends and weld seam, solid point parameter are solid point power 400W, solid point
Time is 0.2s, defocusing amount is+1；
(4) laser bottoming is welded：The parameter of laser welder is adjusted, the welding parameter of the laser bottoming welding is to weld
Power 550W, defocusing amount are+6, speed of welding 2800mm/min, protective gas 99.9%Ar, shield gas flow rate 13L/
Min, protective gas direction are the positions for entering 1mm behind direction before welding, and bottoming welding is carried out after the completion of regulation；
(5) welding parameter of formal laser welding is that bonding power 950W, defocusing amount are+6, speed of welding 2800mm/
Min, protective gas 99.9%Ar, shield gas flow rate 13L/min, protective gas direction are to enter before welding behind direction
1mm position, carries out formal laser welding after the completion of regulation, prevented outer gas stream from influenceing welding during welding.
Embodiment two
The present embodiment is to be based on 0.3mm austenitic stainless steel butt welding process, is comprised the following steps：
(1) weld preparation：
A. 0.3mm stainless sheet steels are taken, observe its surface to be welded, it is desirable to smooth no scuffing, the defects of indenture；It is if discontented
Foot require need with sand paper polish solder side, and polish when it is noted that the depth of parallelism of solder side, can not be polished into cambered surface；
B. to-be-welded region need to be cleared up by having polished, with acetone by the thorough wiped clean of solder side, the oil in welded seam area 5mm
Dirt etc. is also required to clean out；
(2) clamping：0.3mm stainless sheet steels to be welded are compressed with fixture clamping, specific connecting method is two pieces stainless
The parallel splicing of steel sheet, it is desirable to surfacing staggered edge free, and commissure assembly gap cannot be greater than 0.05mm；
(3) solid point：Each one point of solid point among weld seam both ends and weld seam, solid point parameter are solid point power 300W, solid point
Time is 0.1s, defocusing amount is -3；
(4) laser bottoming is welded：The parameter of laser welder is adjusted, the welding parameter of the laser bottoming welding is to weld
Power 500W, defocusing amount are+4, speed of welding 2500mm/min, protective gas 99.9%Ar, shield gas flow rate 10L/
Min, protective gas direction are the positions for entering 1mm behind direction before welding, and bottoming welding is carried out after the completion of regulation；
(5) welding parameter of formal laser welding is that bonding power 800W, defocusing amount are+4, speed of welding 2500mm/
Min, protective gas 99.9%Ar, shield gas flow rate 10L/min, protective gas direction are to enter before welding behind direction
1mm position, carries out formal laser welding after the completion of regulation, prevented outer gas stream from influenceing welding during welding.
Embodiment three
The present embodiment is to be based on 0.9mm austenitic stainless steel butt welding process, is comprised the following steps：
(1) weld preparation：
A. 0.9mm stainless sheet steels are taken, observe its surface to be welded, it is desirable to smooth no scuffing, the defects of indenture；It is if discontented
Foot require need with sand paper polish solder side, and polish when it is noted that the depth of parallelism of solder side, can not be polished into cambered surface；
B. to-be-welded region need to be cleared up by having polished, with alcohol by the thorough wiped clean of solder side, the oil in welded seam area 5mm
Dirt etc. is also required to clean out, it is necessary to carry out further work again after alcohol thoroughly volatilization after the completion of alcohol wipe；
(2) clamping：0.9mm stainless sheet steels to be welded are compressed with fixture clamping, specific connecting method is two pieces stainless
The parallel splicing of steel sheet, it is desirable to surfacing staggered edge free, and commissure assembly gap cannot be greater than 0.05mm；
(3) solid point：Each one point of solid point among weld seam both ends and weld seam, solid point parameter are solid point power 500W, solid point
Time is 0.3s, defocusing amount is+3；
(4) laser bottoming is welded：The parameter of laser welder is adjusted, the welding parameter of the laser bottoming welding is to weld
Power 600W, defocusing amount are+8, speed of welding 300mm/min, protective gas 99.9%Ar, shield gas flow rate 15L/
Min, protective gas direction are the positions for entering 2mm behind direction before welding, and bottoming welding is carried out after the completion of regulation；
(4) welding parameter of formal laser welding is that bonding power 1000W, defocusing amount are that+8, speed of welding is
3000mm/min, protective gas 99.9%Ar, shield gas flow rate 15L/min, protective gas direction are the sides of entering before welding
Rearwards 2mm position, carries out formal laser welding after the completion of regulation, prevented outer gas stream from influenceing welding during welding.
Above description is explanation of the invention, is not the restriction to invention, limited range of the present invention is referring to right
It is required that in the case of the basic structure without prejudice to the present invention, the present invention can make any type of modification.
Claims (2)
1. a kind of austenitic stainless steel thin plate butt welding process, it is characterised in that comprise the following steps：
(1) weld preparation：
A. stainless sheet steel is taken, observes its surface to be welded, it is desirable to smooth no scuffing, the defects of indenture；If it is unsatisfactory for requiring to need
With sand paper polish solder side, and polish when it is noted that the depth of parallelism of solder side, can not be polished into cambered surface；
B. to-be-welded region need to be cleared up by having polished, with acetone by the thorough wiped clean of solder side, greasy dirt in welded seam area 5mm etc.
It is also required to clean out；
(2) clamping：Stainless sheet steel to be welded is compressed with fixture clamping, specific connecting method is that two pieces of stainless sheet steels are parallel
Splicing, it is desirable to surfacing staggered edge free, and commissure assembly gap cannot be greater than 0.05mm；
(3) solid point：Each one point of solid point among weld seam both ends and weld seam, solid point parameter are 300~500W of solid point power, solid point
Time is 0.1~0.3s, defocusing amount is -3~+3；
(4) laser bottoming is welded：Because 0.3-0.9mm stainless steel is than relatively thin, material is less in molten bath during welding, slightly gap
It may result in and stay and form defect, so needing to carry out laser bottoming welding before carrying out formal laser welding, adjust laser welder
Parameter, the welding parameter of laser bottoming welding is that 500~600W of bonding power, defocusing amount are+4~+8, speed of welding
For 2500~3000mm/min, protective gas 99.9%Ar, shield gas flow rate be 10~15L/min, protective gas direction be
Enter the position of 1~2mm behind direction before welding, bottoming welding is carried out after the completion of regulation；
(5) the formal laser welding of welding parameter is adjusted：Adjust the welding parameter of laser welder, the welding parameter of formal laser welding
For, 900~1000W of bonding power, defocusing amount be+4~+8, speed of welding be 2500~3000mm/min, protective gas
99.9%Ar, shield gas flow rate are 10~15L/min, protective gas direction is the position for entering 1~2mm behind direction before welding
Put, carry out formal laser welding after the completion of regulation, prevented outer gas stream from influenceing welding during welding.
2. austenitic stainless steel thin plate butt welding process according to claim 1, it is characterised in that：Clear up area to be welded
Alcohol wipe can be used in domain, and greasy dirt in welded seam area 5mm etc. is also required to clean out, alcohol by solder side thorough wiped clean
, it is necessary to carry out further work again after alcohol thoroughly volatilization after the completion of wiping.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711014839.0A CN107866634A (en) | 2017-10-26 | 2017-10-26 | A kind of austenitic stainless steel thin plate butt welding process |
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| CN201711014839.0A CN107866634A (en) | 2017-10-26 | 2017-10-26 | A kind of austenitic stainless steel thin plate butt welding process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672929A (en) * | 2018-07-16 | 2018-10-19 | 内蒙古第机械集团股份有限公司 | A kind of method for laser welding of super high strength armour steel |
| CN110744195A (en) * | 2019-09-12 | 2020-02-04 | 武汉宝悍焊接设备有限公司 | Welding process of high-power laser welding equipment for thin plates |
| CN111843205A (en) * | 2020-07-08 | 2020-10-30 | 程业品 | Welding process of high-power laser welding equipment for thin plates |
| CN112108770A (en) * | 2020-08-26 | 2020-12-22 | 沈阳富创精密设备有限公司 | Combined process method for reducing welding deformation of stainless steel part |
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| CN105149785A (en) * | 2015-10-28 | 2015-12-16 | 无锡汉神电气有限公司 | Lap joint laser welding technology for 0.5 mm aluminum alloy plate |
| CN105149786A (en) * | 2015-10-19 | 2015-12-16 | 哈尔滨工业大学 | Narrow-gap laser-scanning multi-layer self-melting welding method based on prefabricated welding materials |
| CN106312317A (en) * | 2016-10-27 | 2017-01-11 | 北京航星机器制造有限公司 | Welding method of aluminum-magnesium alloy with medium thickness |
| CN107252972A (en) * | 2017-06-02 | 2017-10-17 | 中国科学院合肥物质科学研究院 | It is a kind of to reduce the laser filling wire welding technique of austenitic stainless steel weld joint solidification cracking |
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2017
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105149786A (en) * | 2015-10-19 | 2015-12-16 | 哈尔滨工业大学 | Narrow-gap laser-scanning multi-layer self-melting welding method based on prefabricated welding materials |
| CN105149785A (en) * | 2015-10-28 | 2015-12-16 | 无锡汉神电气有限公司 | Lap joint laser welding technology for 0.5 mm aluminum alloy plate |
| CN106312317A (en) * | 2016-10-27 | 2017-01-11 | 北京航星机器制造有限公司 | Welding method of aluminum-magnesium alloy with medium thickness |
| CN107252972A (en) * | 2017-06-02 | 2017-10-17 | 中国科学院合肥物质科学研究院 | It is a kind of to reduce the laser filling wire welding technique of austenitic stainless steel weld joint solidification cracking |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108672929A (en) * | 2018-07-16 | 2018-10-19 | 内蒙古第机械集团股份有限公司 | A kind of method for laser welding of super high strength armour steel |
| CN110744195A (en) * | 2019-09-12 | 2020-02-04 | 武汉宝悍焊接设备有限公司 | Welding process of high-power laser welding equipment for thin plates |
| CN111843205A (en) * | 2020-07-08 | 2020-10-30 | 程业品 | Welding process of high-power laser welding equipment for thin plates |
| CN112108770A (en) * | 2020-08-26 | 2020-12-22 | 沈阳富创精密设备有限公司 | Combined process method for reducing welding deformation of stainless steel part |
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