CN103447686A - Method for controlling welding depth - Google Patents
Method for controlling welding depth Download PDFInfo
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- CN103447686A CN103447686A CN2013103535865A CN201310353586A CN103447686A CN 103447686 A CN103447686 A CN 103447686A CN 2013103535865 A CN2013103535865 A CN 2013103535865A CN 201310353586 A CN201310353586 A CN 201310353586A CN 103447686 A CN103447686 A CN 103447686A
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- 238000000034 method Methods 0.000 title claims abstract description 61
- 238000003466 welding Methods 0.000 title claims abstract description 48
- 239000003550 marker Substances 0.000 claims abstract description 101
- 238000001228 spectrum Methods 0.000 claims abstract description 35
- 230000008569 process Effects 0.000 claims abstract description 20
- 230000003595 spectral effect Effects 0.000 claims abstract description 20
- 238000001514 detection method Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 122
- 238000000576 coating method Methods 0.000 claims description 17
- 239000011248 coating agent Substances 0.000 claims description 12
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 6
- 230000007246 mechanism Effects 0.000 claims description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 239000011575 calcium Substances 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 239000011777 magnesium Substances 0.000 claims description 4
- 239000010703 silicon Substances 0.000 claims description 4
- 229910052710 silicon Inorganic materials 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 3
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- 239000011591 potassium Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 abstract 1
- 238000004458 analytical method Methods 0.000 description 7
- 230000008016 vaporization Effects 0.000 description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 6
- 238000005476 soldering Methods 0.000 description 6
- 238000009834 vaporization Methods 0.000 description 6
- 239000011701 zinc Substances 0.000 description 6
- 229910052725 zinc Inorganic materials 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000000523 sample Substances 0.000 description 4
- 229910000676 Si alloy Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000004927 fusion Effects 0.000 description 3
- 238000003754 machining Methods 0.000 description 3
- 238000003032 molecular docking Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 241000538562 Banjos Species 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229910052729 chemical element Inorganic materials 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000012876 carrier material Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/26—Seam welding of rectilinear seams
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/03—Observing, e.g. monitoring, the workpiece
- B23K26/032—Observing, e.g. monitoring, the workpiece using optical means
-
- 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
- B23K26/244—Overlap seam 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
- B23K26/20—Bonding
- B23K26/32—Bonding 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
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
- B23K26/705—Beam measuring device
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/08—Non-ferrous metals or alloys
- B23K2103/10—Aluminium or alloys thereof
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
Abstract
The method involves positioning a marker substance (24) locally between two workpieces (20a,20b), selectively, and carrying out spectroscopic detection of a spectrum of electromagnetic wave (36) emitted during the welding process from a welding zone (28). The electromagnetic wave at a characteristic spectral line (lambda M) of the marker substance and the rules of the weld in response to the intensity (I) of the spectral line are evaluated. The marker substance is arranged only in the region of the butt joint (22) of the two workpieces.
Description
Technical field
The present invention relates to a kind of for adjust the method for the depth of weld when welding two workpiece.
Background technology
File DE10155384A1 discloses a kind of method of rapid analysis metal melt or foundry goods, in the method, the metallic vapour process emission spectrographic analysis that metal to be analyzed or sample are vaporized by laser beam and produced, for quantitative or qualitative proof alloy composition composition.
File DE102004004666B3 discloses a kind of welding method, and in this welding method, the spectrum analysis of the electromagnetic spectrum of launching by the pdp body produced again detects a kind of material coating on basic material that is applied to basic material.
In a kind of method of welding full zinc plated sheet metal shown in file US2008/0210674A1, in the method, survey the spectrum line of institute's iron content in zinc and workpiece.Adjust welding process according to surveyed spectrum line, to avoid the too fast pore that evaporates and prevent that formation is not expected on weld seam to be generated of zinc layer.Make can not adjust the depth of weld in this way.
By file, DE1912344A is known, and in welding process, the acquisition of the humorous property of light is from the electromagnetic spectrum of weld zone emission.The wave spectrum of emission is adjusted the depth of weld for marker material characteristic spectrum line analysis and according to the intensity of institute's detecting light spectrum line.The material that serves as a mark can adopt material element or the zinc contained in workpiece, and it is painted on the two sides of workpiece etch resistant layer.In the situation that the suggestion of through welding workpiece is configured in beam direction workpiece to be welded rear portion as expendable material using marker material intentionally.If workpiece is non-fusion, by described method, can only adjust a little the depth of weld.In addition, these methods generally are not applicable to adjust the method for the depth of weld.With the zinc that is disposed at the workpiece two sides, serving as a mark, to adjust the depth of weld be unreliable and susceptible to material.
Summary of the invention
The task of described invention is to provide a kind of method of adjusting the depth of weld when two workpiece of welding, and the method can overcome the not enough of background technology and particularly can generally use.
This task solves by the method with the described feature of claim 1.
Other advantages and the preferred embodiment of object of the present invention are provided by specification, claim and accompanying drawing.
In the method for invention, marker material only, namely selectively is arranged in partly two each other between workpiece to be welded before welding process.Will be understood that, do not contain in the material of workpiece in the ideal case or only with unessential concentration, contain marker material.Thus can be in welding process more various and adjust the depth of weld in more anti-interference ground mode generally.As long as marker material inputs to small part evaporation (vaporization) and/or ionization by the energy in welding process, just can be the electromagnetic spectrum of launching from weld zone one or more characteristic light spectral line of snoop tag material.The depth of weld of the intensity measured measured of marker material characteristic light spectral line during to welding work pieces is relevant.Thus, can adjust the depth of weld with plain mode according to the spectrum line of marker material (intensity).If the intensity of spectrum line is less than the specified intensity of predetermined (specified) depth of weld corresponding to expectation, so because the not enough depth of weld causes the marker material vaporization/ionization of measuring very little.The depth of weld can be supplemented adjustment by changing welding parameter, for example improve the power of the soldering appliance (welding tip, laser beam) used in welding, perhaps by reducing speed of welding, until the intensity measured of marker material characteristic light spectral line is corresponding to predetermined rated intensity.If the intensity measured of the characteristic light spectral line of marker material is higher than the specified intensity of the specified depth of weld corresponding to expectation, the depth of weld is excessive so.In this case, reduce the depth of weld by changing welding parameter, until the intensity measured is corresponding to predetermined rated intensity position.By marker material selectively being arranged between two workpiece, in the workpiece process that can form in the welding any materials in low-cost mode, use the method.Described workpiece can have the same material composition or also can have different material compositions at this.In addition, for the invention method unessential: workpiece be the light or surface treated, particularly in both sides, be provided with corrosion layer.Be suitable for welding work pieces in the zone of lap joint or banjo fixing butt jointing according to the method for invention with same degree.
According to invention, marker material preferably only is arranged in the zone of junction joint of two workpiece.This provides time and cost advantage.In addition, workpiece can directly be reprocessed, and needn't remove in advance unnecessary marker material.
The preferred improvement project according to the present invention, marker material is applied on a workpiece or two workpiece (one-sided).This provides the production technology advantage on the one hand, because can save especially like this marker material and can be fixed on the precalculated position of workpiece basically anti-lostly.Can avoid like this marker material to change undesirably position in welding process.
For the coating mark material, can use respectively suitable coating process, particularly chemical liquids coating process or for example also can use the plasma coating method.
According to invention, marker material can be particularly be applied on one of two workpiece or two workpiece as the part of alloy coat.At this, described alloy coat preferably has the protective effect for the fire check occurred on workpiece.As long as the workpiece that welding is made by aluminium or aluminium alloy, marker material can be especially the part of silicon alloy coating, the silicon itself particularly contained in described silicon alloy coating.
According to the present invention, marker material can loose or be arranged between the interface of workpiece with clamping.Make thus bothersome coating process become unnecessary.Can also again enlarge the scope of application of the method thus.
At marker material between workpiece especially simply use and location aspect, described marker material can be applied to carrier material according to invention, particularly on (plastics) film.Described film is provided preferably with adhesive or this as sticking and can be fixed on workpiece simplifiedly thus.In addition, marker material remaining after welding process can be removed simply, and its mode is, from this/these workpiece peel off film.
The material that serves as a mark particularly can be used chemical element can enter as potassium, calcium, lithium, magnesium, aluminium, silicon, copper or other chemical element that (unstable) enlivens energy state and carry out thus the spectrum proof when two workpiece of welding.
Can also use multiple different marker material according to the present invention.Obtain thus the range of application again enlarged according to the method for invention.Not to be only one of marker material of negligible quantity if contain every volume unit in one or two workpiece, just can adjust the depth of weld according to another marker material intensity of spectral lines.In addition, in the situation that be arranged between workpiece on different positions, can adjust more accurately the depth of weld at marker material.
As long as workpiece is welded to one another in the zone of lap joint, just can for example directly the first marker material be applied on closing line, workpiece prolongs described closing line and is welded to one another.The second marker material can---in the plane of junction joint---for example be arranged on the both sides of the first marker material.Thus can be additionally according to the intensity (critically) of the spectrum line of the second marker material feature, adjust the depth of weld.
The method of invention is particularly suitable for adjusting the depth of weld when laser weld.
The embodiment below provided in reference to the accompanying drawings further illustrates the present invention.
Illustrated and illustrated embodiment should not be construed as exhaustive, but has many example feature for description of the invention.
The accompanying drawing explanation
Accompanying drawing illustrates:
Fig. 1 illustrates the sectional view of two workpiece that are welded to one another by laser beam, for the characteristic spectrum line analysis that only is arranged in two marker materials between workpiece, from the electromagnetic spectrum of weld zone emission and according to the marker material spectrum line, by the intensity of measuring technique decision, adjusts the depth of weld;
Fig. 2 illustrates the sectional view that connects the best depth of weld of two workpiece in Fig. 1, the intensity I of marker material characteristic light spectral line
istcorresponding to predetermined specified intensity I
soll1;
Fig. 3 illustrates the sectional view that connects the best depth of weld of two workpiece in Fig. 1, the intensity I of marker material characteristic light spectral line
istcorresponding to predetermined specified intensity I
soll2;
Fig. 4 illustrate with marker material two that than the front elevation of the workpiece of welding, described marker material only is arranged between workpiece and only with preset width, is placed in two workpiece junction joint zones;
Fig. 5 illustrates in Fig. 4 the front elevation of two workpiece with marker material adjacent one another are, and described marker material has the different characteristic spectrum line;
Fig. 6 illustrates the sectional view of two workpiece, and workpiece is welded to one another in its docking zone, and marker material only is arranged between two workpiece in the docking zone;
Fig. 7 illustrates the sectional view that Fig. 6 has the workpiece of two kinds of marker materials, and described marker material only is placed between two workpiece and only overlaps each other in the docking zone;
Fig. 8 a-8c illustrate bearing (Fig. 8 a), clamp mechanism (Fig. 8 b) and machine bottom (Fig. 8 c), it has respectively marker material; And
Fig. 9 illustrates the block diagram according to the independent operating procedure of the method for adjusting the depth of weld in two workpiece welding processes of invention.
The specific embodiment
But Fig. 1 illustrates the laser soldering device 10 of the laser Machining head 12 with the motion of multiaxis ground, described laser Machining head has laser beam 16, the focus optics 14 that adjust changeably for producing from laser soldering device 10.Control device 18 is for controlling all functions of (adjustment) laser soldering device 10.
Form so-called steam capillary 32 (English: keyhole) to laser beam 16 directions fused mass 30 is interior when selected laser power.At depth of weld E shown in the present
istsituation under, steam capillary 32 only extends in the first workpiece 20a and less than note material 24 up to standard.
One towards weld zone the probe unit 38 of 28 orientations for surveying the electromagnetic spectrum 36 of ionization part by metallic vapour 34 28 the zone emission from weld zone.
Analysis and processing unit 40 is coupled with the control device l8 of laser soldering device 10, by means of described control device can be at the power of laser beam, control described laser beam 16 and can control the adjustment movement (speed and direction) of described laser Machining head 12 with respect to workpiece 20a, 20b to be welded to each other aspect the corresponding focal position of workpiece 20a, 20b.
Because fused mass 30 and steam capillary 32 do not extend in Fig. 1 the workpiece 20b that is arranged in below, therefore at this, can not realize interconnecting of these two workpiece 20a, 20b.Because said marker material is vaporization/ionization not, so the characteristic light spectral line λ of marker material 24
mthe intensity I measured
istbe zero.
Fig. 2 illustrates the laser power that two workpiece 20a, 20b increase in welding process when with respect to the described state of Fig. 1.Fused mass 30 and steam capillary 32 extend through the coating 26 of the marker material 24 contained and enter in second workpiece 20b.Marker material is inputted at the first volume cross section V by the energy of laser beam 16
1in along junction joint, vaporize.Therefore, the own material 24 of mark that the metallic vapour 34 upwards overflowed through steam capillary 32 has vaporization and ionizes at least in part.Shown depth of weld E
istallow Best link and both incomplete fusions of two workpiece 20a, 20b.The spectrum line λ of marker material 24
mthe intensity I measured
istcorresponding in order to make two workpiece 20a, 20b Best link and predetermined specified intensity I
soll1.
Fig. 3 illustrates in welding process at the second specified depth of weld E
soll2the time Fig. 2 two workpiece 20a, 20b, the described second specified depth of weld is corresponding to the through welding of two workpiece 20a, 20b.Steam capillary 32 extends fully through this two workpiece 20a, 20b.Marker material 24 is at the second large volume cross section V that compares with Fig. 2
2in along junction joint to be welded 22 vaporization and ionization.The characteristic light spectral line λ of marker material 24
mintensity I corresponding in order to make two workpiece 20a, 20b on purpose through welding and predetermined specified intensity I
soll2.
Fig. 4 illustrates two workpiece 20a to be welded, the top view of 20b.Marker material 24 is arranged along the closing line to be welded 44 between two workpiece 20a, 20b in the zone of junction joint 22.At this, the coating 26 with marker material 24 has width B, the width B of the weld seam 46 that described width produces while approximately welding corresponding to two workpiece 20a, 20b '.Weld seam 46 to be generated is partly provided by dotted line in Fig. 4.Coating 26 is usually obviously narrow than weld seam 46.
As Fig. 5 is shown specifically, in order again to adjust the depth of weld to differentiation, also two kinds or more of (not shown) marker materials 24,24 ' can be set between workpiece 20a, 20b to be welded each other.Described two kinds of marker materials 24,24 ' are at this spectrum line λ that takes on a different character
m(Fig. 1 to 3).
The first marker material 24 is arranged on closing line to be welded 44 in the zone of the junction joint of two workpiece 20a, 20b at this.Both sides at the first marker material 24 arrange respectively a kind of other marker material 24 ' along closing line 44.Spectrum line λ according to described other marker material 24 '
mintensity I in the wave spectrum 36 (Fig. 1 to 3) detected, can be by depth of weld E in welding process
istbe fine-tuning to specified depth of weld E
soll1, E
soll2.
Fig. 7 illustrates two workpiece 20a, 20b, and it is to be welded to each other with the corresponding mode of workpiece shown in Fig. 6.Be provided with two kinds of marker materials 24,24 ' at this between workpiece 20a, 20b, described marker material is at characteristic light spectral line λ separately
mthe aspect difference.The first marker material 24 extends approximately the median surface 50 to workpiece from the upside 48 of workpiece 20a, 20b.The own material 24 ' of the second mark in the zone of junction joint 22 with the first marker material 24 in abutting connection with and extend to the downside 52 of workpiece 20a, 20b.
As shown in Fig. 8 a-8c, machine bottom (mechanical slot) 58 that the clamp mechanism 56 of the bearing 54 of supporting workpiece 20a, a 20b in welding process or clamping work pieces 20a, a 20b in welding or are arranged on below workpiece 20a, 20b can have described marker material or have identical marker material or have a kind of other marker material 24.At this, described bearing 54, described clamp mechanism 56 or described machine bottom 58 can consist of or by described marker material 24 coatings described marker material 24.
Below by Fig. 9, describe in detail according to the process at welding two workpiece 20a, 20b of invention and adjust depth of weld E
istmethod 100.
In first step 102, marker material 24,24 ' only is arranged between two workpiece 20a, 20b partly.At this, marker material 24 preferably only is arranged in the zone of junction joint 22 of two workpiece 20a, 20b to be welded to each other.Two each other in the material of workpiece 20a, 20b to be welded containing or only with negligible quantity, contain marker material.
While in the zone of described junction joint 22, welding 104 described two workpiece 20a, 20b, from weld zone, 28 electromagnetic spectrums of launching 36 are detected by light splitting another step 106.
In another step 108, described electromagnetic spectrum is at institute's usage flag material 24,24 ' characteristic light spectral line λ
mthe analyzed processing in aspect and in another step 110 according to marker material 24,24 ' spectrum line λ
mintensity I by depth of weld E
istadjust to the specified depth of weld E of expectation
soll1, E
soll2.
According to Fig. 1, depth of weld E
isttoo little for the interconnecting of workpiece 20a, 20b.Only be arranged in that two marker materials 24 between workpiece 20a, 20b have as above illustrated like that by welding the laser beam 16 used in the 104 also unionization of neither vaporizing.So spectrum line λ of marker material 24
mintensity I
istbe zero.In this case, depth of weld E increases step by step or continuously, until reach spectrum line λ
mintensity I
istreach pre-sizing, the specified intensity I for example provided in Fig. 2
soll1the specified intensity I for the through welding workpiece perhaps provided in Fig. 3
soll2.This for example can be by changing laser soldering device 10 focus optics 14 focal position and/or by the power that improves laser beam 16, realize.For in welding process 102, supplementing and adjust depth of weld E
istcan also reduce speed of welding in the mode determined according to experiment.In contrary situation, namely as characteristic light spectral line λ
mthe intensity I detected by measuring technique
istsurpass the corresponding specified intensity I provided
soll1, I
soll2the time, depth of weld E
istfor example by the corresponding laser power that reduces, be reduced, until the characteristic light spectral line λ of this marker material or these marker materials
mreach specified intensity I
soll1, I
soll2.
In said process 100, use this or these mark own material 24,24 ' can be in particular for the part of the alloy coat of one or two workpiece 20a, 20b, described alloy coat is for preventing fire check.In the situation that welding the workpiece 20a, the 20b that are made by aluminum or aluminum alloy, preferably use the material 24 that serves as a mark of the silicon alloy with silicon.Replacedly, the available lithium alloy that the contains lithium material 24 of marking for example.Will be understood that, for example also can use in the method for the invention lithium (Li), potassium (K), calcium (Ca), copper (Cu) or magnesium (Mg) material 24 that serves as a mark.Described marker material 24 under any circumstance all preferably has characteristic light spectral line λ
m, described characteristic light spectral line is different from the characteristic light spectral line λ of zinc
m.Therefore the method also can be used reliably in workpiece 20a, the 20b of partly or completely zinc-plated (anticorrosive).
Claims (11)
1. one kind for adjusting the depth of weld (E when (20a, 20b) at two workpiece of welding
ist) method (100), there are following steps:
-marker material (24,24 ') is optionally arranged to (102) are between two workpiece (20a, 20b) partly;
-electromagnetic spectrum (36) that launch (28) from weld zone in welding process (104) is carried out to spectral detection (106);
-at the characteristic light spectral line (λ of the own material of described mark (24,24 ')
m) aspect analyzes described electromagnetic spectrum (36); And
-according to described spectrum line (λ
m) intensity (I) adjust (110) depth of weld (E
ist).
2. method according to claim 1, is characterized in that, described marker material (24,24 ') only is arranged in the zone of junction joint (22) of described two workpiece (20a, 20b).
3. method according to claim 1 and 2, is characterized in that, described marker material (24,24 ') is coated in one of described two workpiece above or is coated on described two workpiece (20a, 20b).
4. method according to claim 3, is characterized in that, described marker material (24,24 ') is coated as the part of a coating (26).
5. method according to claim 4, is characterized in that, use alloy coat as coating (26) to prevent fire check.
6. method according to claim 1, is characterized in that, described marker material (24,24 ') is set to loosely or remains between described two workpiece (20a, 20b) with clamping.
7. according to the arbitrary described method of the claims, it is characterized in that, described marker material (24,24 ') is potassium, calcium, lithium, magnesium, aluminium, silicon or copper.
8. according to the arbitrary described method of the claims, it is characterized in that, use a plurality of different marker materials (24,24 ').
9. according to the arbitrary described method of the claims, it is characterized in that, described two workpiece (20a, 20b) are welded to each other by means of laser instrument (16).
10. according to the arbitrary described method of the claims, it is characterized in that, clamp mechanism (56) or a machine bottom (58) that is arranged on described workpiece (20a, 20b) below that bearing (54), that supports described workpiece (20a, 20b) at weld period clamps described workpiece (20a, 20b) at weld period have described marker material or have identical marker material or have at least one other marker material (24,24 ').
11. method according to claim 10, it is characterized in that, described bearing (54), described clamp mechanism (56) or described machine bottom (58) consist of described marker material (24,24 ') or by described marker material (24,24 ') coating.
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| DE102012007304.6 | 2012-04-13 | ||
| DE102012007304.6A DE102012007304B4 (en) | 2012-04-13 | 2012-04-13 | Method for controlling a welding depth |
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| CN106907994A (en) * | 2017-03-13 | 2017-06-30 | 湖南大学 | It is a kind of to measure the method that weld seam melts volume |
| CN107405725A (en) * | 2015-02-09 | 2017-11-28 | 司浦爱激光技术英国有限公司 | Using the method for laser welding of microbonding part pattern |
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| CN114126798A (en) * | 2019-07-25 | 2022-03-01 | 罗伯特·博世有限公司 | Machining method for welding copper conductor and workpiece, workpiece and vehicle |
| CN114505585A (en) * | 2022-03-08 | 2022-05-17 | 北京工业大学 | Method for identifying penetration state in laser-arc hybrid welding based on characteristic line spectrum |
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| DE102016122350A1 (en) * | 2016-11-21 | 2018-05-24 | Erlas Erlanger Lasertechnik Gmbh | Monitoring arrangement for a laser system and laser system with the monitoring arrangement |
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Also Published As
| Publication number | Publication date |
|---|---|
| DE102012007304B4 (en) | 2014-12-18 |
| CN103447686B (en) | 2016-09-07 |
| DE102012007304A1 (en) | 2013-10-17 |
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