CN109909615A - The laser threading welding jig and its welding method of deformed steel strip steel band - Google Patents
The laser threading welding jig and its welding method of deformed steel strip steel band Download PDFInfo
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- CN109909615A CN109909615A CN201910243724.1A CN201910243724A CN109909615A CN 109909615 A CN109909615 A CN 109909615A CN 201910243724 A CN201910243724 A CN 201910243724A CN 109909615 A CN109909615 A CN 109909615A
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Abstract
The invention discloses a kind of laser threading welding jig of deformed steel strip steel band and its welding methods, it includes pedestal, welding tractor, shear, preheating device, laser soldering device, post weld heat treatment device and postwelding weld seam Roller compaction device, and laser soldering device includes the laser focusing head being arranged in welding tractor upper inside wall and the mechanism that fills silk；Laser focusing head two sides with laser focusing head middle line be symmetrically arranged with weldering preamble correction mechanism, weldering preamble correction mechanism include it is symmetrical above and below setting welding tractor on upper smooth wheel group and under smooth wheel assembly；This method shears strip welding edge using the shear on welding tractor；Piece is carried out after shearing；When welding, welding tractor successively carries out weld preheating to weld seam, weldering preamble correction, synchronous when laser welding to fill silk, post weld heat treatment and postwelding roll along weld movement.The method of the present invention improves welding seam toughness and forming property, ensure that the production of cold rolling high-strength steel.
Description
Technical field
The present invention relates to hot rolled strip welding fields, in particular to a kind of laser threading welding jig of deformed steel strip steel band
And its welding method.
Background technique
Threading laser welding apparatus is universal as shown in Figure 1, the welding equipment includes pedestal, vertical steel band transverse shifting at present
Welding tractor, welding tractor transverse shifting motor.Welding tractor is C-shaped, be sequentially installed with shear, preheating device,
Laser soldering device, post weld heat treatment device and postwelding weld seam Roller compaction device, wherein preheating device and post weld heat treatment device are adopted
With Medium frequency induction coil.
Because of the focusing focus very little of laser welding, in order to guarantee laser not light leakage and welding depression, generally take continuously
Gap is lower than 0.15mm gap weldig, and hot rolled strip is taken the lead with magnetic tape trailer due to rolling and cooling down, it is easy to plate shape occurs
It is bad, such as reaping hook gulf, warpage, if continuing using traditional welding manner, it may appear that overlap joint, misalignment, welding depression, solder skip etc.
Phenomenon seriously reduces Weld Performance, and especially high-strength steel deformed steel strip is more serious, and welding performance is worse, weld seam mechanics
Reduced performance is more.
Summary of the invention
The invention aims to improve the online laser weldability of the strip of deformed steel strip, a kind of deformed steel strip is provided
The laser threading welding jig and its welding method of steel band, the present invention is on the basis of traditional strip online welding equipment, to swashing
Flush weld connection device improves, and increases fill silk function and weld seam weldering preamble aligning gear, laser soldering device includes laser
Focus head, the mechanism that fills silk, weldering preamble correction mechanism.
To achieve the above object, the laser threading welding jig of a kind of deformed steel strip steel band provided by the invention, it includes
Pedestal is provided with c-type welding tractor and motor on the pedestal, and shear, preheating are sequentially installed on the welding tractor
Device, laser soldering device, post weld heat treatment device and postwelding weld seam Roller compaction device, the laser soldering device include that setting exists
Laser focusing head in c-type welding tractor upper inside wall and the mechanism that fills silk；The laser focusing head two sides are in laser focusing head
Line is symmetrically arranged with weldering preamble correction mechanism, and the weldering preamble correction mechanism includes on setting welding tractor symmetrical above and below
Upper smooth wheel group and under smooth wheel assembly；The upper smooth wheel group includes that setting compresses gas in c-type welding tractor upper inside wall
Cylinder is provided with smooth wheel in the compression cylinder, smooth wheel assembly smooth wheeling support, smooth wheel under described under including under described
Be provided with down smooth wheel on support, the upper smooth wheel and under be provided with steel band to be welded between smooth wheel.
Further, between the upper smooth wheel angle and under between smooth wheel angle be a, a=11~30 °.
Still further, the upper smooth wheel and under smooth take turns front s=1~5mm for moving in laser focusing head.
Still further, it is described it is it is smooth wheel and under it is smooth wheel on the both sides of weld seam at a distance from weld seam 5~10mm.With side
Just the exclusion of the arrangement of laser focusing head and spatter.Under smooth wheel top edge and steel band lower surface in same plane；On
Smooth wheel uses cylinder-driven, can move up and down, and when non-solder, upper smooth wheel lifted, and when welding, upper smooth wheel passed through cylinder-driven
It moves down compression steel band to be welded and the school of steel band to be welded is guaranteed according to the thickness of steel band to be welded and deformation adjustable cylinder pressure
It is flat.
The present invention also provides a kind of welding methods of the laser threading welding jig of above-mentioned deformed steel strip steel band, including with
Lower step:
1) shear on welding tractor shears strip welding edge；Piece, piece are carried out after shearing
When preset clearance be 0.15~0.5mm；
2) when welding, welding tractor successively carries out weld preheating, weldering preamble correction, laser to weld seam along weld movement
Synchronous when welding to fill silk, post weld heat treatment and postwelding roll.
Preferably, in the step 2), laser welding 10500~12000W of function, 2.0~6.0m/ of speed of welding
min；Fill silk material: the gas shield welding wire that 50kg grades of tensile strength, diameter 1mm；3~the 12m/min of silk filling speed for the mechanism 10 that fills silk
(speed that fills silk guarantees that weld gap fills up and is more than 0~0.5mm of steel strip surface)；6~15 kilowatts of weld preheating power, postwelding heat
9~18 kilowatts of processing power；Gap joint size exists according to hot rolled coil plate thickness, deformation and weld seam edge shearing quality
It is selected within the scope of 0.15~0.5mm.
The beneficial effects of the present invention are:
Silk filling speed of the invention should ensure that weld gap fills up and is more than 0~0.5mm of steel strip surface.Compared to conventional method
Filler wire when increasing weldering preamble correction and Laser Welding, postwelding smooth welded seam, full, functional, stabilization.The method is
Implement in cold rolling mill, ensure that the production of sour rolling line.
The method of the present invention improves welding seam toughness and forming property, ensure that the production of cold rolling high-strength steel.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of laser threading welding jig；
Fig. 2 is the structural schematic diagram of laser soldering device；
Fig. 3 is the detail view of laser soldering device；
In figure, pedestal 1, welding tractor 2, shear 3, preheating device 4, laser soldering device 5, post weld heat treatment device
6, postwelding weld seam Roller compaction device 7, weldering preamble correction mechanism 8, laser focusing head 9, the mechanism 10 that fills silk, upper smooth wheel group 11, pressure
Tight cylinder 11.1, upper smooth wheel 11.2, under smooth wheel assembly 12, under smooth wheeling support 12.1, under smooth wheel 12.2, steel to be welded
Band 13, motor 14.
Specific embodiment
In order to better explain the present invention, below in conjunction with the specific embodiment main contents that the present invention is furture elucidated, but
The contents of the present invention are not limited solely to following embodiment.
Embodiment 1
The laser threading welding jig of deformed steel strip steel band as shown in Figures 1 to 3, it includes pedestal 1, is set on the pedestal
Be equipped with c-type welding tractor 2, be sequentially installed on the welding tractor 2 shear 3, preheating device 4, laser soldering device 5,
Post weld heat treatment device 6 and postwelding weld seam Roller compaction device 7, laser soldering device 5 includes weldering preamble correction mechanism 8, same before welding
Step correction mechanism 8 includes the laser focusing head 9 being arranged in 2 upper inside wall of c-type welding tractor and the mechanism 10 that fills silk, and laser focuses
First 9 two sides are symmetrically arranged with upper smooth wheel group 11 with 9 middle line of laser focusing head, and upper smooth wheel group 11 includes that setting is welded in c-type
Compression cylinder 11.1 in 2 upper inside wall of trolley is provided with smooth wheel 11.2,2 lower part of c-type welding tractor in compression cylinder 11.1
Be provided on inner wall with upper smooth wheel group 11 it is symmetrical above and below under smooth wheel assembly 12, under smooth wheel assembly 12 include under smooth wheel
Support 12.1, under be provided with down smooth wheel 12.2 on smooth wheeling support 2, upper smooth wheel 11.2 and under be arranged between smooth wheel 12.2
There is steel band 13 to be welded.
The upper smooth wheel 11.2 front s=1~5mm of smooth wheel 12.2 in laser focusing head movement under；Upper smooth wheel
11.2 and under it is smooth wheel 12.2 on the both sides of weld seam at a distance from weld seam 5~10mm；Upper smooth 11.2 angles of wheel are smooth under
Taking turns 12.2 angles is a, a=11~30 °.
The laser threading welding jig of above-mentioned deformed steel strip steel band is welded, comprising the following steps:
1) shear 3 on welding tractor 2 shears strip welding edge；Piece is carried out after shearing, is spelled
Preset clearance is 0.15~0.5mm when seam；
2) when welding, welding tractor 2 successively carries out weld preheating, weldering preamble correction, laser to weld seam along weld movement
Synchronous when welding to fill silk, post weld heat treatment and postwelding roll；Wherein, laser welding function is 10500~12000W, and speed of welding is
2.0~6m/min；Fill silk material: the gas shield welding wire that 50kg grades of tensile strength, diameter 1mm；Silk filling speed is 3~12m/min；Weldering
Preceding warm-up power is 6~15 kilowatts, and post weld heat treatment power is 9~18 kilowatts；Gap joint is 0.15~0.5mm.
Different steel bands are welded based on above-mentioned equipment and method, embodiment is as follows:
Embodiment 2
3.0mm dual phase steel 600DP: laser welding function is 10500W, speed of welding 5m/min；Gap joint is
0.20mm；Fill silk material: the gas shield welding wire that 50kg grades of tensile strength, diameter 1mm, and silk filling speed is 6m/min；Weld preheating
Power is 12 kilowatts, and post weld heat treatment power is 13.5 kilowatts.
Embodiment 3
4.5mm1500MPa hot forming steel: laser welding function is 10500W, speed of welding 3m/min；Gap joint is
0.40mm；Fill silk material: the gas shield welding wire that 50kg grades of tensile strength, diameter 1mm, and silk filling speed is 8m/min；Weld preheating
Power is 8 kilowatts, and post weld heat treatment power is 9 kilowatts.
Embodiment 4
6.0mm dual phase steel 780DP: laser welding function is 10500W, speed of welding 2.5m/min；Gap joint is
0.50mm；Fill silk material: the gas shield welding wire that 50kg grades of tensile strength, diameter 1mm, and silk filling speed is 10m/min；Weld preheating
Power is 10 kilowatts, and post weld heat treatment power is 12 kilowatts.
Other unspecified parts are the prior art.Although above-described embodiment is made that the present invention and retouches in detail
State, but it is only a part of the embodiment of the present invention, rather than whole embodiments, people can also according to the present embodiment without
Other embodiments are obtained under the premise of creativeness, these embodiments belong to the scope of the present invention.
Claims (6)
1. a kind of laser threading welding jig of deformed steel strip steel band, it includes pedestal (1), and c-type weldering is provided on the pedestal
Trolley (2) and motor (14) are connect, shear (3), preheating device (4), Laser Welding are sequentially installed on the welding tractor (2)
Connection device (5), post weld heat treatment device (6) and postwelding weld seam Roller compaction device (7), it is characterised in that: the laser soldering device
It (5) include the laser focusing head (9) being arranged in welding tractor (2) upper inside wall and silk filling mechanism (10)；The laser focuses
Head (9) two sides are symmetrically arranged with weldering preamble correction mechanism (8), the weldering preamble straightening machine with laser focusing head (9) middle line
Structure (8) include it is symmetrical above and below setting welding tractor (2) on upper smooth wheel group (11) and under smooth wheel assembly (12)；It is described flat
Whole wheel group (11) includes that compression cylinder (11.1) is arranged in welding tractor (2) upper inside wall, on the compression cylinder (11.1)
It is provided with smooth wheel (11.2), smooth wheel assembly (12) smooth wheeling support (12.1), smooth wheel under described under including under described
Be provided with down smooth wheel (12.2) on support (2), the upper smooth wheel (11.2) and under be provided between smooth wheel (12.2) to
It welds steel band (13).
2. the laser threading welding jig of deformed steel strip steel band according to claim 1, it is characterised in that: the upper smooth wheel
(11.2) between angle and under between smooth wheel (12.2) angle be a, a=11~30 °.
3. the laser threading welding jig of deformed steel strip steel band according to claim 1, it is characterised in that: the upper smooth wheel
(11.2) and under smooth front s=1~5mm for being moved in laser focusing head of wheel (12.2).
4. the laser threading welding jig of deformed steel strip steel band according to claim 1, it is characterised in that: the upper smooth wheel
(11.2) and under smooth wheel (12.2) on the both sides of weld seam 5~10mm at a distance from weld seam.
5. a kind of welding method of the laser threading welding jig of deformed steel strip steel band described in claim 1, it is characterised in that: packet
Include following steps:
1) shear on welding tractor shears strip welding edge；Carry out piece after shearing, when piece is pre-
Staying gap is 0.15~0.5mm；
2) when welding, welding tractor successively carries out weld preheating, weldering preamble correction, laser welding to weld seam along weld movement
When it is synchronous fill silk, post weld heat treatment and postwelding roll.
6. the welding method of the laser threading welding jig of deformed steel strip steel band according to claim 5, it is characterised in that: institute
It states in step 2), laser welding function is 10500~12000W, and speed of welding is 2.0~6.0m/min；Fill silk material: tension is strong
The gas shield welding wire of 50kg grades of degree, diameter 1mm；Silk filling speed is 3~12m/min；Weld preheating power is 6~15 kilowatts, postwelding
Being heat-treated power is 9~18 kilowatts；Gap joint is 0.15~0.5mm.
Priority Applications (1)
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|---|---|---|---|
| CN201910243724.1A CN109909615A (en) | 2019-03-28 | 2019-03-28 | The laser threading welding jig and its welding method of deformed steel strip steel band |
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|---|---|---|---|
| CN201910243724.1A CN109909615A (en) | 2019-03-28 | 2019-03-28 | The laser threading welding jig and its welding method of deformed steel strip steel band |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112846514A (en) * | 2020-12-28 | 2021-05-28 | 山东钢铁集团日照有限公司 | Method for judging welding quality through parameter setting of welding seam quality detection system |
| CN114055061A (en) * | 2021-12-29 | 2022-02-18 | 江苏大力神科技股份有限公司 | Welding machine heating device |
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| CN112846514A (en) * | 2020-12-28 | 2021-05-28 | 山东钢铁集团日照有限公司 | Method for judging welding quality through parameter setting of welding seam quality detection system |
| CN114055061A (en) * | 2021-12-29 | 2022-02-18 | 江苏大力神科技股份有限公司 | Welding machine heating device |
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Application publication date: 20190621 |