CN109014943A - It is a kind of to be set for the welded makeup of the cleaning in black volume endless rolling - Google Patents
It is a kind of to be set for the welded makeup of the cleaning in black volume endless rolling Download PDFInfo
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- CN109014943A CN109014943A CN201810797090.XA CN201810797090A CN109014943A CN 109014943 A CN109014943 A CN 109014943A CN 201810797090 A CN201810797090 A CN 201810797090A CN 109014943 A CN109014943 A CN 109014943A
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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
- B23K26/0093—Working by laser beam, e.g. welding, cutting or boring combined with mechanical machining or metal-working covered by other subclasses than B23K
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B7/00—Cleaning by methods not provided for in a single other subclass or a single group in this subclass
- B08B7/0035—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like
- B08B7/0042—Cleaning by methods not provided for in a single other subclass or a single group in this subclass by radiant energy, e.g. UV, laser, light beam or the like by laser
-
- 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
- B23K26/346—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding
- B23K26/348—Working by laser beam, e.g. welding, cutting or boring in combination with welding or cutting covered by groups B23K5/00 - B23K25/00, e.g. in combination with resistance welding in combination with arc heating, e.g. TIG [tungsten inert gas], MIG [metal inert gas] or plasma welding
Abstract
The invention belongs to compound welding technology fields, and disclose it is a kind of for the cleaning in black volume endless rolling it is welded makeup set.The device include composite welding module and with laser cleaning module, composite welding module forms composite heat power supply collective effect by laser and electric arc and triggers molten bath in black winding steel surface to be welded, while laser also attracts electric arc to inhibit the arc root of electric arc to drift about with this；Laser cleaning module is used to clean the part of black coiled strip steel stitching portion welding front and back to be welded upper and lower surface；Composite welding module and laser cleaning module are arranged on same bracket, form cleaning-welding-cleaning integral structure, realize on-line cleaning and welding while progress with this.The invention also discloses the welding methods of the device.Through the invention, effectively inhibit the stomata in welding, be mingled with, the metallurgical imperfections such as incomplete fusion, guarantee that piece quality and postwelding are smooth during composite welding, improve endless rolling efficiency and stability, reduce disconnected band risk.
Description
Technical field
The invention belongs to compound welding technology fields, more particularly, to a kind of cleaning in black volume endless rolling
Welded makeup is set.
Background technique
The semi-finished product coil of strip handled without subsequent techniques such as pickling, de-scalings is known as black volume in the industry, otherwise is blank examination paper, it is without a head
Rolling is to weld two pieces of black volumes of head and the tail on delay table, and be continuously introduced into milling train, to realize continuous rolling
A kind of technology substantially increases rhythm of production since the rolling tensile force of whole process remains unchanged, and is widely used in the life of steel
In production.
Compared with blank examination paper, black volume upper and lower surface has thicker iron scale, the different iron scale pole of one side thickness
The earth affects black be welded and connects technology stability, on the other hand needs more heats, higher power of heat source or slower weldering
Speed is connect first to destroy scale on surface, base material could be melted and form molten bath, equipment cost is added somewhat to and limit
Made rhythm of production, in addition, coil of strip in storage and transportational process due to protecting improper be easily stained with to invite greasy dirt, or even become rusty
Erosion, so that dirt is formed in belt steel surface, and the dirt of strip upper and lower surface is to generate gas in traditional endless rolling welding procedure
Hole, be mingled with, the metallurgical imperfections such as incomplete fusion the main reason for one of, such as: electromagnetic induction welding, Flash Butt Welding and arc welding,
Therefore, black volume upper and lower surface iron scale, greasy dirt, iron rust etc. how are eliminated, weld seam overall flexibility is improved, prevents disconnected band,
It further increases black volume endless rolling stability and efficiency is the important guarantee for accelerating steel industry technology upgrading.It is currently, there are
About laser-arc to the composite welding mode of combination, the core of technique is to solve between welding seam toughness and belt steel rolling tension
Balance regulation problem, but for existing composite welding, without quickly and effectively, equipment is simple and mode at low cost removes
The mode of belt steel surface dirt to be processed before welding, because of the presence of black volume scale on surface, so that welding process stability
It is poor with welding efficiency, and after the iron scale on black volume surface is involved in weld seam, easily cause operation of rolling band of discontinuance, performance decline,
To bring huge economic losses.
For the cleaning problem of strip to be processed, patent CN106733947A discloses a kind of laser cleaning system and work
Method realizes effective assessment of the injury tolerance to the laser cleaning and raw material substrate on workpiece to be processed surface；For another example,
CN107962074 discloses a kind of stainless steel cold-rolled plate continuous process system and method, realize whole black coiled strip steel is carried out it is clear
It washes, blank examination paper strip is obtained with this.However, further investigations have shown that, the above-mentioned prior art still has below insufficient or scarce
It falls into: although being to be cleaned for finished parts, being not directed to weldering firstly, carried out laser cleaning for workpiece to be processed surface
It connects and postwelding cleaning process, and is entirely equipped with camera and infrared detector, so that system complex, equipment cost is high, when response
Between it is relatively slow, be not particularly suited for the more severe situations of field conditions such as steel enterprise；Secondly, be in the prior art to whole black coiled strip steel into
Row cleaning, obtains blank examination paper strip with this, can not achieve the part cleaning of black volume, due to the iron oxide skin depth on black volume surface, and with
Matrix combines by force, so that the acid solution in pickling is not easy to penetrate into, so pickling can not completely remove the iron scale on black volume surface,
It need to be used cooperatively with the broken phosphorus equipment of machinery and iron scale is removed with this, so that the device is complicated using pickling, it is at high cost, this
Outside, there is also easily cause pollution to environment to the waste liquid generated after pickling.
Summary of the invention
Aiming at the above defects or improvement requirements of the prior art, the present invention provides a kind of in black volume endless rolling
It cleans welded makeup to set, wherein it is clear to be directed to design by all kinds of defects in conjunction with caused by during black volume endless rolling
It washes welded makeup to set, and to the specific structure of its matched key component such as composite welding module and laser cleaning module etc.
And its set-up mode improves, correspondingly thoroughly remove influence black volume weldquality and efficiency upper and lower surface iron scale,
The dirts such as the splashing of greasy dirt and iron rust etc. and postwelding upper and lower surface and dust obtain the surface quality for being equally even better than blank examination paper,
Effectively inhibit by face of weld stomata, be mingled with, incomplete fusion and the defects of disconnected band, be provided simultaneously with it is compact-sized, convenient for manipulation and
The features such as later period maintenance.
To achieve the above object, it is proposed, according to the invention, provide a kind of welded for the cleaning in black volume endless rolling
Makeup is set, the device include composite welding module and with laser cleaning module, in which:
The composite welding module includes arc welding gun and first laser transmitting unit, the arc welding gun and first laser
Transmitting unit is oppositely arranged, spot center and the electricity by the dull first laser for saving the first laser transmitting member transmitting
The spacing between welding wire in arc welding torch, i.e. chevilled silk are away from so that the first laser attracts the electric arc and inhibits the electricity with this
The electric arc that the arc root drift of arc guarantees the stabilization of welding process, while the first laser and arc welding gun are generated forms multiple
Heat source is closed, collective effect triggers molten bath in black winding steel surface to be welded with this；
The front-end and back-end of the composite welding module, the laser cleaning of front end is arranged in the laser cleaning module
Module is used to remove the iron scale of black winding steel surface to be welded, avoids iron scale from being involved in weld seam and causes disconnected band, simultaneously
It avoids welding process from expending energy and improves speed of welding for destroying iron scale, and then while guaranteeing through welding, rear end
The laser cleaning module is used to remove the splashing that generates after welding, avoids splashing in black winding steel surface and forms protrusion, reduction
The surface accuracy of strip after welding；
The C-shaped support uses hollow structure, and the composite welding module and laser cleaning module are arranged at intervals on simultaneously
It is non-interference each other in the hollow space of the C-shaped support, by the bracket along black winding steel surface to be welded to
Preceding movement so that black coiled strip steel to be welded successively welded before laser cleaning, the laser cleaning after composite welding and welding,
It is achieved in cleaning progress synchronous with welding.
It is further preferred that the laser cleaning module includes two cleaning groups for being symmetricly set on strip two sides to be welded
Part, for carrying out local cleaning simultaneously to black coiled strip steel upper and lower surface, wherein by the intensity and scanning range tune that adjust laser
Save the depth of laser cleaning and the range of cleaning.
It is further preferred that the cleaning assembly includes second laser transmitting unit, light beam adjustment unit and gas nozzle, it is described
Light beam adjustment unit is adjusted the scanning range for the second laser that the second laser transmitting unit issues, the second laser
Scanning range correspond to the clean range of the cleaning assembly, realized by adjusting the scanning range clear to the cleaning assembly
The adjustment of range is washed, the side that the second laser transmitting unit is arranged in the gas nozzle is dropped for blowing out inert gas with this
Remaining flue dust after the temperature and removing cleaning of low belt steel surface to be welded.
It is further preferred that the angle between the gas nozzle and strip to be welded preferably uses 30 °~60 °, the gas nozzle
The effect of second laser that emits with the second laser transmitting unit of end between at a distance from preferably use 5mm~
20mm。
It is further preferred that the optical fiber spacing preferably uses 1mm~4mm, the defocusing amount of the first laser is preferably adopted
With -2mm~2mm.
It is further preferred that the bracket is C-shaped, it is connect with lead screw transmission mechanism, strip to be welded is placed among bracket,
It is moved by screw body driving arm, the process of cleaning, welding and cleaning is done step-by-step.
It is further preferred that the power of the optical fiber laser used in the laser cleaning module before the welding is preferred
Using 100W~500W.
It is further preferred that the thickness of the black coiled strip steel to be welded preferably uses 0.8mm~6mm, it is correspondingly, compound
The laser power preferred scope of welding module is 500W~8000W, and arc current preferred scope is 150A~320A, speed of welding
Preferred scope is 2m/min~6m/min, and gage of wire preferred scope is 1.0mm~1.2mm.
In general, through the invention it is contemplated above technical scheme is compared with the prior art, can obtain down and show
Beneficial effect:
1, the present invention treats welding strip stitching portion by using laser cleaning module and carries out local cleaning, clear before welding
The power setting for washing optical-fiber laser is 100W~500W, and realization thoroughly removes the upper and lower surface for influencing black volume weldquality and efficiency
Iron scale, greasy dirt and iron rust and postwelding upper and lower surface dirt obtain the surface quality for being equally even better than blank examination paper, effectively inhibit
The stomata as caused by surface quality is mingled with, the metallurgical imperfections such as incomplete fusion, while capacity usage ratio is high, reduces unnecessary energy
Loss realizes and efficiently, quickly cleans that the laser cleaning after welding is used to remove the splashing combustion gasification that welding generates and decomposes,
Weld seam is further cleaned, welding effect is improved；
2, laser and electric arc are combined by using composite welding module and form composite welding process, had both sharp by the present invention
Photocoagulation heat input is small and the strong advantage of arc welding metallurgy ability of regulation and control, wherein sucking action of the first laser to electric arc, suppression
The drift of arc root has been made, the high stability of electric arc is improved, to improve speed of welding, first laser and electric arc form composite heat power supply
Collective effect triggers molten bath in black winding steel surface to be welded, it is easier to realize the balance between welding seam toughness and belt steel rolling tension
Regulation reduces disconnected band risk；
3, the present invention is arranged in C-shaped support by using by laser cleaning module and composite welding module, is formed and is swashed
Light cleaning module-composite welding module-laser cleaning module integral structure realizes on-line cleaning progress synchronous with welding,
The iron scale for reducing black volume surface before welding, avoids it from being involved in weld seam, reduces and resolves the risk of band, at the same to welding after
The processing of the dirts such as splashing, further improves the quality of weld seam, thereby guarantees that the preceding piece quality of weldering, postwelding is smooth and weld seam is whole
Weight reduces the risk of breakage of weld seam；If not cleaned before composite welding, heat a part of the composite heat power supply in composite welding
It is used to destroy the iron scale on surface, for the energy of welding strip is just few, thereby has to reduce speed of welding
Guarantee to penetrate, using the laser cleaning before welding in the present invention, improve speed of welding, ensure that the stabilization of welding process,
It is simple to be also equipped with structure for the device simultaneously, operates convenient, the advantages such as at low cost.
Detailed description of the invention
Fig. 1 is constructed by preferred embodiment according to the invention for cleaning weldedization in black volume endless rolling
The structural schematic diagram of device；
Fig. 2 is that the structure of laser cleaning module and composite welding module constructed by preferred embodiment according to the invention is shown
It is intended to.
In all the appended drawings, identical appended drawing reference is used to denote the same element or structure, in which:
1- first laser transmitting unit, 2- arc welding gun, 3- laser cleaning module, 4-C type bracket, 5- scissors, 6- are smooth
Wheel, 7- air knife, 8- second laser, 9- focus lamp, 10- gas nozzle, 11- galvanometer, 12- light beam adjustment unit, 13- beam expanding lens, 14- light
Fine channel, 15- collimating mirror, 16- first laser, 17- contact roller, 18- strip to be welded, 19- second laser transmitting unit
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in the various embodiments of the present invention described below
Not constituting a conflict with each other can be combined with each other.
Fig. 1 is constructed by preferred embodiment according to the invention for cleaning weldedization in black volume endless rolling
The structural schematic diagram of device, as shown in Figure 1, a kind of set for the welded makeup of the cleaning in black volume endless rolling, including multiple
It closes welding module, laser cleaning module 3 and C-shaped support 4, composite welding module, laser cleaning module 3 and is all fixed on C-shaped support
On, realize the on-line cleaning and welding of black coiled strip steel.
Fig. 2 is the structure of laser cleaning module 3 and composite welding module constructed by preferred embodiment according to the invention
Schematic diagram, as shown in Fig. 2, the composite welding module includes arc welding gun 2, first laser transmitting unit 1 and air knife 7, it is described
The electric arc formation composite heat power supply collective effect that first laser transmitting unit 1 emits first laser 16 and the arc welding gun 2 generates
Molten bath is triggered with this on 18 surface of strip to be welded, while the first laser 16 is also used to attract the electric arc and be inhibited with this
The arc root of the electric arc drifts about, and guarantees the stability of welding process, improves speed of welding, and the setting of air knife 7 is sent out in the first laser
The side for penetrating unit avoids weld seam from aoxidizing for blowing out protective gas in the welding process.First laser transmitting unit 1
On be additionally provided with optical-fibre channel 14 and collimating mirror 15, optical-fibre channel 14 is used for laser from laser flexible transfer to first laser
In transmitting unit 1, collimating mirror 15 is used to the non-parallel laser directly exported from laser carrying out collimation processing, to be had
Excellent beam quality first laser 16；By welding wire of the selection containing different-alloy element in arc welding gun, regulate and control the hot shadow of weld seam
Area and Melted Zone Microstructure are rung, weld seam overall flexibility is adjusted, realizes the balance regulation between welding seam toughness and belt steel rolling tension,
Reduce disconnected band risk；
More specifically, first laser transmitting unit includes collimation microscope group, focuses microscope group, protection eyeglass and cavity composition, root
Microscope group is selected according to actual demand, several kilowatts of laser powers for arriving tens of kilowatt can be born；
More specifically, arc welding gun 2 is with wire drawing function and protection gas jets, it can be achieved that stablizing CMT arc mode；
More specifically, the spacing between the welding wire central axes in 16 spot center of first laser and arc welding gun 2, i.e.,
Optical fiber spacing, it is preferred to use the defocusing amount of 1mm~4mm, the first laser 16 preferably use -2mm~2mm.
More specifically, first laser keeps vertical, and the angle of welding gun and first laser is in 30-45 degree or so.
Fig. 2 is that the structure of laser cleaning module and composite welding module constructed by preferred embodiment according to the invention is shown
It is intended to, as shown in Fig. 2, the laser cleaning module 3 includes two cleaning assemblies for being symmetricly set on 18 two sides of strip to be welded,
It is respectively used to treat the part cleaning of 18 stitching portion of welding strip welding front and back upper and lower surface, which includes second laser
Transmitting unit 19, light beam adjustment unit 12 and gas nozzle 10, the light beam adjustment unit 12 is to the second laser transmitting unit 19
The scanning range of the second laser 8 of sending is adjusted, and the scanning range of the second laser 8 corresponds to the cleaning of the cleaning assembly
Range realizes the adjustment to the cleaning assembly clean range by adjusting the scanning range, and the gas nozzle 10 is arranged in institute
The side for stating second laser transmitting unit 19, for blowing out inert gas, with this reduce by 18 surface of strip to be welded temperature and
Remove remaining flue dust after cleaning；Cleaning speed reaches as high as 6000mm/s, and depth reaches 90mm up to 0.6mm, cleaning efficiency2/s
More than.
The laser power of laser cleaning module before welding is 100W-500W, for thoroughly removing strip upper and lower surface
Iron scale, greasy dirt etc. influence the dirt of welding process stability and efficiency, and acquisition is equal to the blank examination paper surface after de-scaling pickling
Quality, wherein the specific setting of laser power depends on the thickness of strip, and strip is thicker, and iron scale thickness is also thicker, cleaning
Depth is bigger, then laser power is bigger；The power setting of laser cleaning module after welding is according to the splashing generated after welding
How much set, is greater than iron scale with the bond strength of strip due to splashing, so it is more to splash, laser power is bigger,
It splashes fewer, laser power is smaller.Splashing after being formed, diffusion rapidly, the lowermost easy to pollute focus microscope group, cause to focus outward
The problems such as focal position variation, focus characteristics change, welding energy is lost, influences welding quality, in addition, splashing can be with strip knot
It closes and forms larger protrusion in belt steel surface, excessive wear is caused to the roller surface during subsequent belt steel rolling, shortening is rolled
The roller service life.
Laser cleaning module 3 further includes computer control system, and computer control system controls laser and light beam simultaneously
Adjustment unit 12 makes the second laser 8 after focusing is regular to be incident on 18 surface of strip to be welded and cleaned.
More specifically, the laser that second laser transmitting unit 19 uses is the optical fiber laser of 100~500W；Light beam tune
Whole unit 12 includes beam expanding lens 13, galvanometer 11 and focus lamp 9.The laser that laser issues is migrated by optical-fibre channel 14
Beam expanding lens 13 in light beam adjustment unit 12 is expanded, later by the galvanometer 11 in the light beam adjustment unit 12 to described
The scanning range for the unfocused second laser 8 that second laser transmitting unit 19 issues accurately is controlled, then by described poly-
Burnt mirror 9 is focused into the minimum second laser 8 of hot spot for obtaining, and acting directly on 18 surface of strip to be welded makes dirt burning point
Solution, and dropped by the side that the second laser transmitting unit 19 is arranged in the gas nozzle 10 for blowing out inert gas with this
Remaining flue dust after the temperature and removing cleaning on low 18 surface of strip to be welded, completes cleaning.The gas nozzle 10 and band to be welded
18 surface angle preferred scope of steel be 30~60 °, 10 end of gas nozzle between the effect of the second laser at a distance from it is preferred
Using 5mm~20mm.
The light beam adjustment unit 12 includes beam expanding lens 13, galvanometer 11 and focus lamp 9, and beam expanding lens 13 is used for being transmitted to light
The second laser 8 of beam adjustment unit 12 is expanded, and galvanometer 11 is used for so that the unfocused second laser 8 carries out deflection and sweeps
Movement is retouched, second laser 8 for being focused and making its energy to meet needed for cleaning by focus lamp 9.
It is additionally provided with contact roller 17 in the C-shaped support 4, which is arranged the side of the arc welding gun 2, and right
Claim the two sides up and down for being distributed in strip 18 to be welded, the piece for precompressed place to be welded；
One group of smooth wheel 6 is additionally provided in the C-shaped support 4, which is arranged in the laser cleaning module 3
Rear, and the two sides up and down of strip 19 to be welded are symmetrically distributed in, for the weld seam after smooth welding；
It is additionally provided with scissors 5 in the C-shaped support 4, which is arranged in the front end of the laser cleaning module 3, is used for
The waste material of two pieces of 18 sides of strip to be welded is wiped out, so that two pieces of strips 18 to be welded smooth can splice.
The C-shaped support 4 realizes the accurate adjustment of 0.5~8m/min of weldering speed using lead screw transmission, and strip 18 to be welded is put
It sets among bracket, is moved by screw body driving arm, the process of cleaning, welding and cleaning is done step-by-step, C-shaped support uses
Composite welding module and laser cleaning module are fixed on connecting plate by hollow structure as required, and connecting plate passes through hydraulic drive,
Realize the movement of upper and lower position.Wherein, servo motor is fixed on connecting plate, is fixed by bolts mode and composite welding module
In first laser fix, realize the adjustment of defocusing amount, arc welding gun is bolted on the Support Position on connecting plate, and
The position with first laser is adjusted by bolt or sliding block.
A kind of cleaning weldedization method using device described above, including the following steps:
Cleaning process parameter, including defocus is arranged using each 10mm of upper and lower surface at docking or so as cleaning area in step 1
Amount, cleaning speed, laser power and gas flow etc..Preferably, defocusing amount range be 0~10mm, cleaning speed be 30~
150mm/s, laser power are 100~500W, and gas flow is 20~60L/min；
Both step 2 sets the parameters value in composite welding module, adjusts the spatial position of laser and electric arc, make
In effective recombination region.Wherein, it is chosen according to the difference of arc procedure and sets specific optical fiber spacing, i.e. spot center
It is optical fiber spacing D to welding wire central axes distanceLA, setting value value range is 1~4mm；It is selected according to the material of strip 18 to be welded
The value for taking and setting laser beam defocusing amount, the value range of the value set is -2~2mm, for example, when using CMT technique, chevilled silk
Spacing selects 1~2mm, using 3~4mm of selection when pulsation process；When black volume thickness to be welded is in 4mm or more, first laser 16
Defocusing amount select -2~0mm, when black volume thickness to be welded is in 4mm or less, the defocusing amount of first laser 16 selects 0~2mm.
In general, black volume thickness range to be welded is 0.8~6mm, the laser power preferred scope of composite welding module is
500~8000W；Arc current preferred scope is 150~320A；Speed of welding preferred scope is 2~6m/min；Gage of wire is excellent
Selecting range is 1.0~1.2mm.
Step 3, laser cleaning module 3 is respectively placed at the composite welding module each 80cm in front and back, by 3 He of laser cleaning module
Composite welding module collective effect first cleans black volume upper and lower surface with online mode, so at black 18 docking of coiled strip steel
Composite heat power supply collective effect afterwards, triggering form molten bath, come into effect hybrid Laser-Arc Welding, after the completion of welding again to weld seam into
Row cleaning, completes welding.
The present invention is further illustrated below with reference to specific embodiment.
Embodiment 1
Workpiece material is the black volume of 304 austenitic stainless steels of 4mm thickness, and welding manner is plate welding.
In the present embodiment, laser light source is 8000W optical fiber laser, and electric arc heat source is the control fusing of 320A pulse digit
Pole inert gas welding machine, laser cleaner are 500W optical-fiber laser cleaning machine.
The technological parameter of the laser cleaning of the present embodiment welding front and back are as follows: laser power 300W, cleaning speed 60mm/s, from
Coke amount 2mm, gas flow 50L/min；The technological parameter of laser-arc hybrid welding in industry are as follows: select the ER316L of 1.0mm diameter not
Become rusty steel welding wire, and protection gas uses Ar+2.5%CO2Mixed gas, gas flow 25L/min, the folder of vertical beam of light and arc welding gun
Angle is 30 °, optical fiber spacing 3mm, and laser beam defocusing amount is -2mm, laser power 4500W, arc current 150A, welding
Speed is 3.6m/min.
Stablized using the welding process of above-mentioned technological parameter, the 2.5m/min that speed of welding never carries out surface clean is improved
3.6m/min is arrived, the raising of the speed of welding is brought considerable so that actual production line unit output is greatly promoted to enterprise
Economic benefit, and quality weld the defects of obtain flawless, pore-free can obtains inside weld seam containing a small amount of iron element
The stable austenite tissue of body makes it that fracture (being broken along base material) occur perpendicular to weld seam in Erichsen test, and passes through pressure
The rolling that amount is 50%.
Embodiment 2
Workpiece material is the black volume of 2Cr13 martensitic stain less steel of 6mm thickness, and welding manner is plate welding.
Laser cleaning and compound welding equipment and embodiment 1 are consistent.
The technological parameter of the laser cleaning of the present embodiment welding front and back are as follows: laser power 450W, cleaning speed 35mm/s, from
Coke amount 0mm, gas flow 60L/min；The technological parameter of laser-arc hybrid welding in industry are as follows: select the ER310L of 1.0mm diameter not
Become rusty steel welding wire, and protection gas uses Ar+2.5%CO2Mixed gas, gas flow 20L/min, the folder of vertical beam of light and arc welding gun
Angle is 40 °, optical fiber spacing 2mm, and laser beam defocusing amount is -2mm, laser power 7000W, arc current 215A, welding
Speed is 2.1m/min.
Stablized using the welding process of above-mentioned technological parameter, the 1.6m/min that speed of welding never carries out surface clean is improved
2.1m/min is arrived, the raising of the speed of welding is brought considerable so that actual production line unit output is greatly promoted to enterprise
Economic benefit, in addition, obtain flawless, pore-free the defects of quality weld, enough weld seams can be formed inside weld seam
The austenite structure of toughness makes it that fracture (being broken along base material) occur perpendicular to weld seam in Erichsen test, and passes through drafts
For 60% rolling.
The material and main welding parameters to be welded of other embodiments are illustrated with list mode below:
Parameter setting table in 1 laser cleaning module 3 of table and composite welding module
Stablized using the welding process of above-mentioned technological parameter, compared with the case where not carrying out surface clean, speed of welding is mentioned
High 0.5~1.5m/min, the raising of the speed of welding are brought so that actual production line unit output is greatly promoted to enterprise
Considerable economic benefit, and obtain the quality weld of the metallurgical imperfections such as flawless and stomata, and in Erichsen test perpendicular to
Fracture (being broken along base material) occurs for weld seam, and 45% rolling is at least by drafts.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should all include
Within protection scope of the present invention.
Claims (8)
1. a kind of set for the welded makeup of the cleaning in black volume endless rolling, which is characterized in that the device includes Combined Welding
Connection module, laser cleaning module (3) and C-shaped support (4), in which:
The composite welding module includes arc welding gun (2) and first laser transmitting unit (1), and the arc welding gun and first swash
Light emitting unit is oppositely arranged, by it is dull save the first laser emit first (1) transmitting first laser spot center with
The spacing between welding wire in the arc welding gun (2), i.e. chevilled silk are away from so that the first laser (1) attracts the electric arc simultaneously
Inhibit the arc root of the electric arc to drift about with this and guarantee the stabilization of welding process, while the first laser and arc welding gun are generated
Electric arc form composite heat power supply, collective effect triggers molten bath in black winding steel surface to be welded with this；
The front-end and back-end of the composite welding module, the laser cleaning of front end is arranged in the laser cleaning module (3)
Module is used to remove the iron scale of black winding steel surface to be welded, avoids iron scale from being involved in weld seam and causes disconnected band, simultaneously
It avoids welding process from expending energy and improves speed of welding for destroying iron scale, and then while guaranteeing through welding, rear end
The laser cleaning module is used to remove the splashing that generates after welding, avoids splashing in black winding steel surface and forms protrusion, reduction
The surface accuracy of black coiled strip steel after welding；
The C-shaped support (4) uses hollow structure, and the composite welding module and laser cleaning module are arranged at intervals on institute simultaneously
It is non-interference each other in the hollow space for stating C-shaped support (4), by the bracket along black winding steel surface to be welded
Move forward so that black coiled strip steel to be welded successively welded before laser cleaning, the laser after composite welding and welding it is clear
It washes, is achieved in cleaning progress synchronous with welding.
2. a kind of as described in claim 1 set for the welded makeup of the cleaning in black volume endless rolling, which is characterized in that
The laser cleaning module (3) includes two cleaning assemblies for being symmetricly set on strip two sides to be welded, for black coiled strip steel
Upper and lower surface carries out local cleaning simultaneously, wherein the depth of laser cleaning is adjusted by the intensity and scanning range that adjust laser
With the range of cleaning.
3. a kind of as claimed in claim 2 set for the welded makeup of the cleaning in black volume endless rolling, which is characterized in that
The cleaning assembly includes second laser transmitting unit (19), light beam adjustment unit (12) and gas nozzle (10), the light beam adjustment
Unit (12) is adjusted the scanning range for the second laser that the second laser transmitting unit issues, which sweeps
The clean range that range corresponds to the cleaning assembly is retouched, is realized by adjusting the scanning range and model is cleaned to the cleaning assembly
The adjustment enclosed, the gas nozzle (10) is arranged in the side of the second laser transmitting unit (12), for blowing out inert gas, with
This reduces the temperature of belt steel surface to be welded and removes remaining flue dust after cleaning.
4. a kind of as claimed in claim 3 set for the welded makeup of the cleaning in black volume endless rolling, which is characterized in that
Angle between the gas nozzle (10) and strip to be welded preferably uses 30 °~60 °, the end of the gas nozzle (10) and described the
Distance between the effect of the second laser (8) of dual-laser transmitting unit transmitting preferably uses 5mm~20mm.
5. it is according to any one of claims 1-4 it is a kind of for the cleaning in black volume endless rolling it is welded makeup set,
Be characterized in that, the optical fiber spacing preferably uses 1mm~4mm, the defocusing amount of the first laser (16) preferably use -2mm~
2mm。
6. it is as described in any one in claim 1-5 it is a kind of for the cleaning in black volume endless rolling it is welded makeup set,
It is characterized in that, the C-shaped support (4) connect with lead screw transmission mechanism, and strip to be welded is placed among C-shaped support, passes through screw rod
Mechanism drives C-shaped support movement, and the process of cleaning, welding and cleaning is done step-by-step.
7. it is as claimed in any one of claims 1 to 6 it is a kind of for the cleaning in black volume endless rolling it is welded makeup set,
Be characterized in that, the power of the optical fiber laser used in the laser cleaning module before the welding preferably use 100W~
500W。
8. as claim 1-7 it is described in any item it is a kind of for the cleaning in black volume endless rolling it is welded makeup set,
It is characterized in that, the thickness of the black coiled strip steel to be welded preferably uses 0.8mm~6mm, and correspondingly, composite welding module swashs
Optical power preferred scope is 500W~8000W, and arc current preferred scope is 150A~320A, and speed of welding preferred scope is
2m/min~6m/min, gage of wire preferred scope are 1.0mm~1.2mm.
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| CN109834389A (en) * | 2019-03-18 | 2019-06-04 | 华中科技大学 | A kind of multi-functional welding equipment and welding method for continuous rolling |
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| CN112427409B (en) * | 2020-10-28 | 2022-05-13 | 上海飞博激光科技有限公司 | Welding method capable of reducing inclusion defects inside weld joints of medium-thickness plates |
| CN113523558A (en) * | 2021-06-22 | 2021-10-22 | 唐山钢铁集团有限责任公司 | Laser welding method for strip steel of acid continuous rolling production line |
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