CN108067843A - A kind of strip laser flat welding process - Google Patents
A kind of strip laser flat welding process Download PDFInfo
- Publication number
- CN108067843A CN108067843A CN201711419286.7A CN201711419286A CN108067843A CN 108067843 A CN108067843 A CN 108067843A CN 201711419286 A CN201711419286 A CN 201711419286A CN 108067843 A CN108067843 A CN 108067843A
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- strip
- welded
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- laser
- welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Plasma & Fusion (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a kind of strip laser flat welding process, including step：Two strip ends to be welded are positioned at share zone, and the end of two strips are sheared using cross cutting scissors by step 1, to ensure smooth end to be welded；Step 2, controls the gap of two strip ends to be welded, and is straightened positioning；Step 3 using laser head by two strips butt welding of end parts to be welded, and is heat-treated weld seam and roll off, and the bonding power scope of laser head is 4.5kW 5.5kW.It is learnt through multiple production inspection, the bonding power of laser head is selected between 4.5kW 5.5kW, can effectively improve the docking intensity of weld seam, reduces the ratio of welding seam breaking.Therefore, strip laser flat welding process proposed by the present invention can improve the weld strength of strip steel weld joint, ensure the normal operation of equipment, solve the problems, such as the field at this stage.
Description
Technical field
The present invention relates to hot-rolling high-strength steel welding field, more specifically to a kind of strip laser flat welding process.
Background technology
Strip welding is to weld together the head and the tail of two strips, is to realize iron and steel enterprise's continuous production, ensures production
Efficiency reduces the important process means of production cost, is widely used in acid and rolls combined production line, continuous annealing production line and continuous
Zinc-plated anneling production line.
For CR550/DP980 grades of hot-rolling high-strength steels, generally use laser butt welding, but its alloy content and carbon equivalent compared with
It is high so that the hardenability after welding is strong, and the hardness of weld heat-affected zone is higher, therefore the fastness of weld seam is poor, it is easy to
Hightension production line occurs broken belt or weld seam accident occurs in rolling, reduces the quality of product, and easily equipment is caused
Damage.
Therefore, the weld strength of strip steel weld joint how is improved, ensures the normal operation of equipment, is that the field is urgently at this stage
The problem of solution.
The content of the invention
In view of this, it is an object of the invention to provide a kind of strip laser flat welding process, which can improve strip
The weld strength of weld seam ensures the normal operation of equipment, solves the problems, such as the field at this stage.
A kind of strip laser flat welding process, including step：
Two strip ends to be welded are positioned at share zone by step 1, and using cross cutting scissors to two bands
The end of steel is sheared, to ensure smooth end to be welded；
Step 2, controls the gap of two strip ends to be welded, and is straightened positioning；
Step 3, using laser head by two strips butt welding of end parts to be welded, and to weld seam carry out heat treatment and
Roll off, and the bonding power scope of the laser head is 4.5kW-5.5kW.
Preferably, the strip laser flat welding process, the speed of welding scope of the laser head is 1m/min-10m/
min。
Preferably, the strip laser flat welding process, the filling speed scope for welding the welding wire of two strips are
1m/min-5m/min。
Preferably, the strip laser flat welding process, the interstice coverages of two strip ends to be welded for-
(0.2-0.4)mm。
Preferably, the strip laser flat welding process, the current range for being heat-treated the weld seam are 110A-150A.
Preferably, the strip laser flat welding process, the thickness range of the strip is 2.0mm-6.0mm.
Preferably, the strip laser flat welding process, the tensile strength of the strip is 600MPa.
Strip laser flat welding process proposed by the present invention, including step：Step 1 determines two strip ends to be welded
The end of two strips is sheared positioned at share zone, and using cross cutting scissors, to ensure smooth end to be welded；Step
Two, the gap of two strip ends to be welded is controlled, and is straightened positioning；Step 3, it is using laser head that two strips are to be welded
Butt welding of end parts, and weld seam is heat-treated and roll off, and the bonding power scope of laser head is 4.5kW-5.5kW.Through more
Secondary production inspection learns that the bonding power of laser head is selected between 4.5kW-5.5kW, can effectively improve pair of weld seam
Intensity is connect, reduces the ratio of welding seam breaking.Therefore, strip laser flat welding process proposed by the present invention, can improve strip steel weld joint
Weld strength, ensure the normal operation of equipment, solve the problems, such as the field at this stage.
Description of the drawings
It in order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is the flow chart of strip laser flat welding process in the specific embodiment of the invention.
Specific embodiment
The core of present embodiment is to provide a kind of strip laser flat welding process, which can improve strip weldering
The weld strength of seam ensures the normal operation of equipment, solves the problems, such as the field at this stage.
Hereinafter, embodiment is illustrated referring to the drawings.In addition, embodiments illustrated below is not to recorded in claim
The content of the invention rise any restriction effect.In addition, the full content of the composition represented by example below is not limited to as right
It is required that necessary to the solution of recorded invention.
The strip laser flat welding process that present embodiment provides, mainly including step：
Two strips to be welded are positioned, and end to be welded are placed in share zone by step 1；Utilize cross cutting scissors
Strip end to be welded is sheared, ensures that end face to be welded is neatly smooth, to improve the quality of welding；
Step 2, because the distance between two strips is easily made to change after shearing, it is therefore desirable to control two strips
The gap of end to be welded, and two strips are carried out with alignment again and is positioned, to ensure being smoothed out for welding process；
Step 3 carries out butt welding to the end to be welded of two strips using laser head, and weld seam is heat-treated
And roll off, ensure the welding quality of weld seam, the phenomenon that improve the deformation or out-of-flatness of weld seam appearance, and by the reality of laser head
Bonding power is selected between 4.5kW-5.5kW, but in actual selection, can select laser head of the rated power for 12kW.
Above-mentioned strip laser flat welding process learns, the bonding power of laser head is selected in through multiple production inspection
Between 4.5kW-5.5kW, the docking intensity of weld seam can be effectively improved, reduces the ratio of welding seam breaking.Therefore, the present invention proposes
Strip laser flat welding process, the weld strength of strip steel weld joint can be improved, ensure the normal operation of equipment, solve at this stage
The problem in the field.
The strip laser flat welding process that present embodiment provides, it is preferred that the speed of welding of laser head can be selected
Between 1m/min-10m/min；The filling speed of the welding wire of welding strip may be selected between 1m/min-5m/min；Two bands
The interstice coverage of steel end to be welded can be-(0.2-0.4) mm；The current range of heat treatment of welds can be 110A-150A.
It should be noted that the welded gaps for the two strip ends mentioned in present embodiment refer to for -0.2
Actual gap is 0.2mm, and negative sign herein refers to that the end of two strips is leaned on close, it is impossible to will become apparent from gap and deposit
Therefore, represented with negative sign.
Above-mentioned strip laser flat welding process, can be applied to the welding of CR550/DP980 hot-rolled high-strength strip steels, using the work
Skill can weld tensile strength up to 600MPa using laser welder on sour rolling mill, and the hot rolling that thickness is 2.0mm-6.0mm is high
Qiang Gang to widen enterprise's production range, reduces production cost, increases economic efficiency.
It is the welding embodiment for the hot-strip that this technique is applied to CR550/DP980 ranks below：
Embodiment 1：
Product category：CR550/DP980；
Specification (thickness * width)：2.3mm*1250mm；
Equipment：It is welded using the laser welder of sour rolling mill；
Welding procedure：Preceding coiled strip steel magnetic tape trailer and the shearing of rear winding steel taping head entrance, then carry out laser butt welding welding；
Welding parameter：The rated power of laser head is 12kW；Speed of welding is 4.0m/min；Welding wire filling speed is
2.2m/min；Welding primary clearance is -0.2mm；Weld seam heat treatment electric current is 110A；
Interpretation of result：Smooth welded seam after said welding method is welded is smooth, no dross, no crator, no burn-through, and cup is convex
Experiment does not occur situations such as along weld cracking, and strip does not occur weld seam broken belt accident through pickling to mill milling is offline.
Embodiment 2
Product category：CR550/DP980；
Specification (thickness * width)：3.5mm*1224mm；
Welding procedure：Preceding coiled strip steel magnetic tape trailer and the shearing of rear winding steel taping head entrance, then carry out laser butt welding welding；
Welding parameter：The rated power of laser head is 12kW；Speed of welding is 3.6m/min；Welding wire filling speed is
2.6m/min；Welding primary clearance is -0.3mm；Weld seam heat treatment electric current is 130A；
Interpretation of result：Smooth welded seam after said welding method is welded is smooth, no dross, no crator, no burn-through, and cup is convex
Experiment does not occur situations such as along weld cracking, and strip does not occur weld seam broken belt accident through pickling to mill milling is offline.
Embodiment 3
Product category：CR550/DP980；
Specification (thickness * width)：5.0mm*1224mm；
Equipment：Strip is welded using the laser welder of sour rolling mill；
Welding procedure：Preceding coiled strip steel magnetic tape trailer and the shearing of rear winding steel taping head entrance, then carry out laser butt welding welding；
Welding parameter：The rated power of laser head is 12kW；Speed of welding is 3.0m/min；Welding wire filling speed is
2.8m/min；Welding primary clearance is -0.4mm；Weld seam heat treatment electric current is 150A；
Interpretation of result：Smooth welded seam after said welding method is welded is smooth, no dross, no crator, no burn-through, and cup is convex
Experiment does not occur situations such as along weld cracking, and strip does not occur weld seam broken belt accident through pickling to mill milling is offline.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or use the present invention.
A variety of modifications of these embodiments will be apparent for those skilled in the art, it is as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, it is of the invention
The embodiments shown herein is not intended to be limited to, and is to fit to and the principles and novel features disclosed herein phase one
The most wide scope caused.
Claims (7)
1. a kind of strip laser flat welding process, which is characterized in that including step：
Two strip ends to be welded are positioned at share zone by step 1, and using cross cutting scissors to two strips
End is sheared, to ensure smooth end to be welded；
Step 2, controls the gap of two strip ends to be welded, and is straightened positioning；
Step 3 using laser head by two strips butt welding of end parts to be welded, and is heat-treated weld seam and roll off,
And the bonding power scope of the laser head is 4.5kW-5.5kW.
2. strip laser flat welding process according to claim 1, which is characterized in that the speed of welding scope of the laser head
For 1m/min-10m/min.
3. strip laser flat welding process according to claim 1, which is characterized in that the welding wire of two strips of welding
Filling speed scope is 1m/min-5m/min.
4. strip laser flat welding process according to claim 1, which is characterized in that two strip ends to be welded
Interstice coverage is-(0.2-0.4) mm.
5. strip laser flat welding process according to claim 1, which is characterized in that be heat-treated the current range of the weld seam
For 110A-150A.
6. strip laser flat welding process according to claim 1, which is characterized in that the thickness range of the strip is
2.0mm-6.0mm。
7. strip laser flat welding process according to claim 1, which is characterized in that the tensile strength of the strip is
600MPa。
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| CN201711419286.7A CN108067843A (en) | 2017-12-25 | 2017-12-25 | A kind of strip laser flat welding process |
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|---|---|---|---|
| CN201711419286.7A CN108067843A (en) | 2017-12-25 | 2017-12-25 | A kind of strip laser flat welding process |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570752A (en) * | 2018-11-28 | 2019-04-05 | 北京首钢冷轧薄板有限公司 | A kind of laser trace of laser welder and the method for adjustment of strip sheared edge |
| CN109909615A (en) * | 2019-03-28 | 2019-06-21 | 武汉钢铁有限公司 | The laser threading welding jig and its welding method of deformed steel strip steel band |
| CN110926961A (en) * | 2019-12-03 | 2020-03-27 | 攀钢集团西昌钢钒有限公司 | Strip steel weld joint quality detection device and method |
| CN111069300A (en) * | 2019-12-30 | 2020-04-28 | 新疆八一钢铁股份有限公司 | Production method of cold-rolled super-thick high-precision motor casing steel |
| CN113118630A (en) * | 2021-04-21 | 2021-07-16 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation method of laser tailor-welded blank with different thicknesses |
| CN113118629A (en) * | 2021-04-21 | 2021-07-16 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation method of poor-intensity laser tailor-welded blank |
| CN114247983A (en) * | 2020-09-23 | 2022-03-29 | 宝山钢铁股份有限公司 | Laser weld quality evaluation method for high-silicon steel hot rolled plate |
| CN114833436A (en) * | 2022-04-27 | 2022-08-02 | 首钢智新迁安电磁材料有限公司 | Method and device for welding high-silicon non-oriented electrical steel hot rolled plate |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60108188A (en) * | 1983-11-16 | 1985-06-13 | Nippon Steel Corp | Laser welding method of steel strip |
| CN102825388A (en) * | 2012-07-17 | 2012-12-19 | 马钢(集团)控股有限公司 | Butt-welding method and welding device for phosphorus-containing high-strength steel strips with tensile strength of at least 450MPa |
| CN103537880A (en) * | 2012-07-17 | 2014-01-29 | 宝山钢铁股份有限公司 | Method for welding high-strength steel through laser welding machine |
| CN103920996A (en) * | 2014-04-16 | 2014-07-16 | 首钢总公司 | Laser welding method for strapping steel |
| CN104227239A (en) * | 2013-06-20 | 2014-12-24 | 宝山钢铁股份有限公司 | Laser welding method for tailored band steel |
| CN104308365A (en) * | 2014-10-16 | 2015-01-28 | 武汉钢铁(集团)公司 | Process and device for edge joint of laser welding machine for strip steel production line |
| CN106392326A (en) * | 2016-11-11 | 2017-02-15 | 北京首钢冷轧薄板有限公司 | Laser welding method and laser welding device |
| CN106735900A (en) * | 2016-11-11 | 2017-05-31 | 北京首钢冷轧薄板有限公司 | A kind of method of laser welding |
| CN107175405A (en) * | 2017-05-12 | 2017-09-19 | 唐山钢铁集团有限责任公司 | A kind of welding procedure of quenching partition steel band |
-
2017
- 2017-12-25 CN CN201711419286.7A patent/CN108067843A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60108188A (en) * | 1983-11-16 | 1985-06-13 | Nippon Steel Corp | Laser welding method of steel strip |
| CN102825388A (en) * | 2012-07-17 | 2012-12-19 | 马钢(集团)控股有限公司 | Butt-welding method and welding device for phosphorus-containing high-strength steel strips with tensile strength of at least 450MPa |
| CN103537880A (en) * | 2012-07-17 | 2014-01-29 | 宝山钢铁股份有限公司 | Method for welding high-strength steel through laser welding machine |
| CN104227239A (en) * | 2013-06-20 | 2014-12-24 | 宝山钢铁股份有限公司 | Laser welding method for tailored band steel |
| CN103920996A (en) * | 2014-04-16 | 2014-07-16 | 首钢总公司 | Laser welding method for strapping steel |
| CN104308365A (en) * | 2014-10-16 | 2015-01-28 | 武汉钢铁(集团)公司 | Process and device for edge joint of laser welding machine for strip steel production line |
| CN106392326A (en) * | 2016-11-11 | 2017-02-15 | 北京首钢冷轧薄板有限公司 | Laser welding method and laser welding device |
| CN106735900A (en) * | 2016-11-11 | 2017-05-31 | 北京首钢冷轧薄板有限公司 | A kind of method of laser welding |
| CN107175405A (en) * | 2017-05-12 | 2017-09-19 | 唐山钢铁集团有限责任公司 | A kind of welding procedure of quenching partition steel band |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570752A (en) * | 2018-11-28 | 2019-04-05 | 北京首钢冷轧薄板有限公司 | A kind of laser trace of laser welder and the method for adjustment of strip sheared edge |
| CN109909615A (en) * | 2019-03-28 | 2019-06-21 | 武汉钢铁有限公司 | The laser threading welding jig and its welding method of deformed steel strip steel band |
| CN110926961A (en) * | 2019-12-03 | 2020-03-27 | 攀钢集团西昌钢钒有限公司 | Strip steel weld joint quality detection device and method |
| CN111069300A (en) * | 2019-12-30 | 2020-04-28 | 新疆八一钢铁股份有限公司 | Production method of cold-rolled super-thick high-precision motor casing steel |
| CN114247983A (en) * | 2020-09-23 | 2022-03-29 | 宝山钢铁股份有限公司 | Laser weld quality evaluation method for high-silicon steel hot rolled plate |
| CN113118630A (en) * | 2021-04-21 | 2021-07-16 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation method of laser tailor-welded blank with different thicknesses |
| CN113118629A (en) * | 2021-04-21 | 2021-07-16 | 攀钢集团攀枝花钢铁研究院有限公司 | Preparation method of poor-intensity laser tailor-welded blank |
| CN114833436A (en) * | 2022-04-27 | 2022-08-02 | 首钢智新迁安电磁材料有限公司 | Method and device for welding high-silicon non-oriented electrical steel hot rolled plate |
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Application publication date: 20180525 |