EP3758887A1 - VERFAHREN ZUR SCHWEIßVORBEHANDLUNG BESCHICHTETER STAHLBLECHE - Google Patents
VERFAHREN ZUR SCHWEIßVORBEHANDLUNG BESCHICHTETER STAHLBLECHEInfo
- Publication number
- EP3758887A1 EP3758887A1 EP19710615.6A EP19710615A EP3758887A1 EP 3758887 A1 EP3758887 A1 EP 3758887A1 EP 19710615 A EP19710615 A EP 19710615A EP 3758887 A1 EP3758887 A1 EP 3758887A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- aluminum
- layer
- silicon
- base material
- welding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000003466 welding Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 40
- 229910000831 Steel Inorganic materials 0.000 title claims description 36
- 239000010959 steel Substances 0.000 title claims description 36
- 238000002679 ablation Methods 0.000 claims abstract description 63
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- 239000000463 material Substances 0.000 claims abstract description 39
- 238000006243 chemical reaction Methods 0.000 claims abstract description 37
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 20
- 239000000956 alloy Substances 0.000 claims abstract description 20
- 229910052742 iron Inorganic materials 0.000 claims abstract description 15
- 229910052782 aluminium Inorganic materials 0.000 claims description 39
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 39
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 15
- 239000011572 manganese Substances 0.000 claims description 15
- 239000010703 silicon Substances 0.000 claims description 15
- 229910052710 silicon Inorganic materials 0.000 claims description 15
- 239000011651 chromium Substances 0.000 claims description 14
- 239000000203 mixture Substances 0.000 claims description 12
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 10
- 229910052748 manganese Inorganic materials 0.000 claims description 10
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 9
- 229910052804 chromium Inorganic materials 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 238000005260 corrosion Methods 0.000 claims description 8
- PALQHNLJJQMCIQ-UHFFFAOYSA-N boron;manganese Chemical compound [Mn]#B PALQHNLJJQMCIQ-UHFFFAOYSA-N 0.000 claims description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 229910052750 molybdenum Inorganic materials 0.000 claims description 6
- 239000011733 molybdenum Substances 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 5
- 210000001503 joint Anatomy 0.000 claims description 5
- 238000002360 preparation method Methods 0.000 claims description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 4
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 229910052698 phosphorus Inorganic materials 0.000 claims description 4
- 239000011574 phosphorus Substances 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 229910052717 sulfur Inorganic materials 0.000 claims description 4
- 239000011593 sulfur Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 3
- 229910000617 Mangalloy Inorganic materials 0.000 claims description 2
- 230000036647 reaction Effects 0.000 claims description 2
- 239000000356 contaminant Substances 0.000 claims 1
- 239000002245 particle Substances 0.000 claims 1
- 230000000284 resting effect Effects 0.000 claims 1
- 229910052721 tungsten Inorganic materials 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 93
- 239000011248 coating agent Substances 0.000 abstract description 23
- 238000000576 coating method Methods 0.000 abstract description 23
- 239000011229 interlayer Substances 0.000 abstract description 7
- 230000008020 evaporation Effects 0.000 abstract 1
- 238000001704 evaporation Methods 0.000 abstract 1
- 239000000543 intermediate Substances 0.000 description 21
- 230000036961 partial effect Effects 0.000 description 18
- 238000010438 heat treatment Methods 0.000 description 7
- 238000005275 alloying Methods 0.000 description 6
- 238000005261 decarburization Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 6
- 239000002184 metal Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000007704 transition Effects 0.000 description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 229910001566 austenite Inorganic materials 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 238000000635 electron micrograph Methods 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 230000002829 reductive effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 229910000712 Boron steel Inorganic materials 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- 235000013980 iron oxide Nutrition 0.000 description 2
- 238000005304 joining Methods 0.000 description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 2
- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000789 Aluminium-silicon alloy Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003618 dip coating Methods 0.000 description 1
- 238000000921 elemental analysis Methods 0.000 description 1
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000000386 microscopy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
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
- B23K26/02—Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam
- B23K26/06—Shaping the laser beam, e.g. by masks or multi-focusing
- B23K26/062—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam
- B23K26/0622—Shaping the laser beam, e.g. by masks or multi-focusing by direct control of the laser beam by shaping pulses
-
- 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/142—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor for the removal of by-products
-
- 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
- B23K26/14—Working by laser beam, e.g. welding, cutting or boring using a fluid stream, e.g. a jet of gas, in conjunction with the laser beam; Nozzles therefor
- B23K26/1462—Nozzles; Features related to nozzles
-
- 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
- B23K26/16—Removal of by-products, e.g. particles or vapours produced during treatment of a workpiece
-
- 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
-
- 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
- B23K26/322—Bonding taking account of the properties of the material involved involving coated metal parts
-
- 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
- B23K26/352—Working by laser beam, e.g. welding, cutting or boring for surface treatment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/40—Removing material taking account of the properties of the material involved
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/60—Preliminary treatment
-
- 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
- B23K2101/185—Tailored blanks
-
- 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
- B23K2101/34—Coated articles, e.g. plated or painted; Surface treated articles
-
- 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
- B23K2101/34—Coated articles, e.g. plated or painted; Surface treated articles
- B23K2101/35—Surface treated articles
-
- 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
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
-
- 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
-
- 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
- B23K2103/18—Dissimilar materials
- B23K2103/20—Ferrous alloys and aluminium or alloys thereof
Definitions
- the present invention relates to a method for the welding pretreatment of coated steel sheets according to the preamble of claim 1.
- weld sheets having a anti-corrosion coating and in particular a metallic anti-corrosion coating such as a zinc or aluminum coating.
- Such customized sheet steel blanks are also referred to as tailored blanks.
- Known welding methods are the arc welding and the laser welding and the laser arc hybrid welding process.
- this document proposes that at least one alloying element of the manganese, chromium, molybdenum, silicon and / or nickel alloying element be added to the filler wire in such a way that the formation of austenite favored in the molten bath generated by the laser beam, this mind min.
- An alloying element with a by at least 0.1 percent by weight larger mass fraction in the additional wire is present as in the press-hardenable steel of the workpiece or workpieces.
- From DE 10 2014 001 979 A1 discloses a method for laser welding of one or more workpieces made of hardenable steel in the butt joint, wherein the steel is in particular a manganese-boron steel and the workpieces have a thickness between 0.5 and 1, 8mm and / or at the butt joint a thickness jump between 0.2 and 0.4 mm is formed, wherein an additional wire is introduced during laser welding in the molten bath, wherein the molten bath is generated exclusively by the one laser beam.
- the filler wire contains at least one alloying element of the group comprising manganese, chromium, molybdenum, silicon and / or nickel, so that the formation of Austenite is favored.
- a method for joining two blanks where at least one of the blanks comprises a layer of aluminum or an aluminum alloy, during the welding process a metal powder is fed into the welding zone and the metal powder is an iron-based powder is gamma-stabilizing elements and the laser beam welding is a two-point laser beam welding.
- EP 2 007 545 B1 discloses a method for producing a welded part with very good mechanical properties, wherein a steel sheet has a coating consisting of an intermetallic layer and a metal alloy layer located on the intermetallic layer.
- the metal alloy layer on the intermetallic layer should be removed, this layer being an aluminum alloy layer.
- This coating is to be removed by a laser beam, so that this formed as an aluminum-silicon layer is evaporated before welding to the harmful effects of aluminum in to avoid the weld.
- the intermetallic layer should remain in place in order to develop any corrosion-inhibiting effects.
- the object of the invention is to provide a method for welding pretreatment, with the reliable stable welds can be generated.
- the disadvantageous effect of aluminum and in particular the disadvantageous effect of a still existing intermetallic interlayer can be eliminated by carrying out the welding preparation with a laser in such a targeted manner that, instead of a full ablation, in which the intermetallic intermediate layer Layer is completely eliminated, or a Supplementablation in which the intermetallic inter mediate layer is maintained, a reaction ablation is driven, in which from the interme-metallic intermediate layer and possibly also components of the aluminum-silicon layer on the one hand and the steel base material on the other hand, a metallic reac tion layer is generated, which can be significantly thicker than the intermetallic intermediate layer and protrudes into the base material.
- the alloy is carried out such that aluminum and silicon are distributed so far that, on the one hand, a protection against scaling is required, however, a negative effect on the Fes activity of the weld is not detectable. This succeeds according to the invention but only with a selected driving style of the laser.
- the inventors have recognized that a certain amount of aluminum is harmless, so that a stable ablation process can be realized which, after welding such pretreated sheets, results in a weld having the same bearing capacity as the hardened base material.
- Particularly advantageous properties showed the reaction onstik if the aluminum content was less than 1 1, 3% by mass, preferably ⁇ 10% by mass, in particular ⁇ 8% by mass, since then the damage to the weld can occur to a greatly reduced extent.
- the small amount of aluminum in the metallic reaction layer does not form intermetallic phases, but is present in dissolved form in the ferrite. Surprisingly, it has been found that these small amounts of aluminum, however, are again sufficient to protect against decarburization and strong scaling.
- the inventors have recognized that a proportion of greater than 1% by mass of aluminum preferably leads to> 2% by mass of the layer of optimum properties since, on the one hand, no intermetallic phases are present but, on the other hand, enough aluminum is present to protect the base material accordingly.
- the most optimal layer properties are therefore the result for aluminum housings in the reaction layer of from 1 to 1, 3% by weight, preferably 1, 5 to 10% by weight, especially preferred, at 2 to 8% by weight.
- the thickness of the aluminum-enriched reaction layer produced in this way is from 5 pm to 100 gm, preferably from 15 gm to 80 pm, in particular from 20 pm to 70 pm, more preferably from 20 pm to 50 pm, the ablation being performed with a pulsed laser.
- the suitable settings are for example a pulse length of 70 ns at a pulse frequency of 14 kHz and an average power of 1606 W.
- FIG. 2 a partial ablation according to the prior art
- FIG. 3 shows the alloy ablation according to the invention
- Figure 4 an aluminum-silicon coating on a steel sheet before a heat treatment in an electron micrograph
- Figure 5 a steel sheet with an aluminum-silicon coating and a sectionablati onsspur in the uncured state in electron micrograph;
- Figure 6 the sectionablationsspur according to Figure 5 in electron and light microscopic to measure
- FIG. 7 a detail from the uncured partial ablation layer according to FIG. 6;
- FIG. 8 shows a full ablation trace in a light-microscopic photograph
- FIG. 9 an enlarged view of the full ablation track according to FIG. 8;
- FIG. 10 the full ablation track according to FIG. 9 in the hardened state
- Figure 1 1 the alloy Ablage invention in the uncured state in one
- FIG. 12 shows the alloy ablation track in the uncured state in a magnified view in light microscopy
- FIG. 14 shows the alloy ablation track in the hardened state in a light microscopic view
- FIG. 15 shows a welded-on component according to the invention in a welded and unhardened state
- FIG. 16 shows the component according to FIG. 16 after curing
- Figure 17 the parameters during ablation and welding
- FIG. 18 shows a detail in the region of the weld seam edge of the component pretreated by welding according to the invention in the uncured state
- FIG. 19 shows the component according to FIG. 19 in the hardened state
- FIG. 20 shows the experimental parameters for the full ablation, partial ablation and according to the invention
- Typical hardenable steels for example, have the general alloy composition (all figures in mass%):
- a steel having the composition is particularly suitable:
- FIG 1 a full ablation of the prior art is shown.
- a base material on which an aluminum-silicon layer is applied wherein between see the aluminum-silicon layer and the base material, an intermetallic zone or intermetallic intermediate layer is formed, which inevitably by Reaktio NEN of the base material with the Aluminum-silicon coating during the elevated temperatures of hot-dip coating.
- the thickness of the intermetallic intermediate layer is about 3 to 10 gm and that of the aluminum-silicon layer 25 to 30 gm. Typical total layer thicknesses are thus 19 to 35 pm with a usual B Anlagenungsauflage of 60 g of aluminum-silicon per m 2 .
- the entire layer analysis of the water layer consists of aluminum with 8 to 1 1% silicon and 2 to 4% iron. At the full In the area of the incident laser beam ablation is sucked off both with blowing nozzles and with suction, the resulting metal vapor and melting drops.
- FIG. 2 shows a so-called partial ablation process.
- the laser beam is driven so that the intermetallic intermediate layer stops and only the aluminum-silicon layer is evaporated with the laser beam and is sucked off accordingly.
- FIG. 3 shows the reaction or alloy ablation according to the invention.
- the aluminum-silicon layer is again present on the base material with the intermediate intermetallic intermediate layer.
- the laser beam affects both the aluminum-silicon layer and the intermetallic zone but also the base material and after the laser beam, the aluminum-silicon layer and the intermetallic inter mediate layer in its original form has eliminated, has formed a metallic reaction layer, which may extend into the base material, and in which an aluminum-silicon layer or an intermetallic intermediate layer is no longer recognizable.
- the laser beam according to the invention has a completely unique metallic reaction layer he witnesses that have taken place of metallic reactions in the reaction zone under the influence of the laser beam.
- the reaction layer itself can protrude 5 to 50 gm from the surface of the original base material in the base material and in total have a layer thickness of 5gm to 100 gm preferably 20 pm to 50 pm.
- FIG. 20 shows the parameters for the partial ablation, the full ablation and the reaction or alloy ablation.
- the partial ablation was carried out at a speed of 8.5 m / min and a pulse duration of 56 nanoseconds.
- the mean ablation power is 923 watts, with the ablation frequency at 10 kHz and the blast nozzle pressure at 0.5 bar overpressure.
- Full ablation was performed at the same ablation rate of 8.5 m / min but with a pulse duration of 64 nanoseconds at a frequency of 12 kHz and an average ablation power of 1 191 watts.
- the blowing nozzle pressure is identical to the partial ablation.
- the heat treatment of this conventional, used in the automotive industry for structural components Ble surface consists of austenitizing and quenching these sheets, which means that in the heat treatment, a temperature of the sheet of 900 ° is usually exceeded, but at least one temperature above of the Ac 3 point of the corresponding steel alloy.
- a total layer thickness of 31 gm with a layer thickness of the intermetallic intermediate layer of 6 gm.
- the intermetallic intermediate layer be consists of a composition that the general formula Fe x Al y Si z and Fe x Al y ge hears. In the intermetallic zone, the EDX analysis shows an aluminum content of 55.8%, an iron content of 33.5%, a silicon content of 10.3%.
- the base material is usually a so-called boron-manganese jet, which is highly hardenable.
- the base material is a so-called 22MnB5, which is one of the common steels for the production of such components.
- the group of boron-manganese steels suitable for this purpose is significantly larger and there is expressly no restriction on the 22MnB5.
- FIG. 5 shows a coating as in FIG. 4, but having a partial ablation track according to the prior art, in the uncured state.
- an unaffected aluminum-silicon coating with the intermetallic zone can be seen, as shown in FIG.
- a partial ablation track can be seen, in which only the intermetallic interlayer with approximately 5 pm layer thickness stands.
- FIG. 6 the same state is reproduced once again for comparison, compared to a light-microscopic image of the same region, which shows well the partially ablated region, the transition region between ablation and coating and the aluminum-silicon coating region.
- FIG. 7 once again shows the partial ablation region with an enlarged detail of the remaining intermetallic intermediate layer with approximately 5 ⁇ m and the underlying base material. Due to the partial ablation, the intermetallic interlayer has also changed slightly, because now the iron content is 68.7%, the aluminum content 26.7%, the Silicon content 3.9% and the manganese content 0.7%. It can thus be seen that a further reaction has taken place under the influence of the laser beam heat, so that the aluminum content has fallen in favor of the iron content, as well as the silicon content. The increased manganese content also indicates that a reaction with boron-manganese steel has taken place.
- FIG. 8 shows a cross section of an uncured fully ablated region, wherein a heat affected zone of the ablation process is visible in the area of full ablation, while the aluminum / silicon layer and the intermetallic inter mediate layer can be seen therefrom. On this are Ablationsreste, including the base material.
- the enlargement of this area in FIG. 9 shows the transition region in which, in turn, the aluminum-silicon layer is changed due to the heat influence of the laser.
- FIG. 10 now shows the hardened state, that is to say in the case of a state which has been caused by the fact that the previously fully ablated sheet has been subjected to austenitization and quench hardening.
- the aluminum-silicon coating on the intermetallic intermediate layer has also changed, this now consists in particular of the general composition Al x Fe y , Al x Fe y Si z , a-Fe.
- FIG. 11 shows a white reaction layer which is visible on the right in FIG.
- An elemental analysis in this white metallic reaction layer shows that the iron content is 91.3%, the aluminum content is 6%, the silicon content is 1.2%, the manganese content 1.2% and the chromium content 0.2%.
- the comparatively high levels of manganese and chromium show how strongly a reaction with the base material took place here.
- the remaining contents of 6% aluminum and 1.2% silicon have been found to be absolutely uncritical with regard to the carrying capacity of a weld produced with such a sheet metal.
- FIG. 12 shows a light micrograph of the corresponding region once more.
- FIG. 13 once again shows an enlarged region of the reaction layer and the transition region to the aluminum-silicon coating.
- the curing was carried out at a furnace temperature of 930 ° C and a furnace residence time of 5 minutes and 10 seconds.
- the transfer time to cool was 8 seconds, cooling in a water-cooled plate die.
- the ablation laser used comes from the company Powerlase, the laser type is M 600E-60.
- the ablation laser optic has a focus geometry of 2.4 x 0.4 mm 2 , with the 0.4 mm arranged in the ablation advancing direction.
- the focal length of the focus lens was about 150 mm, the laser optics can be ordered from Andritz Soutec under the order number 62-
- the suitable and used in the experiments suction hood is also manufactured by the company Andritz Soutec and can be ordered under the name Ablation suction hood "Souspeed" at Andritz Soutec with the order number 64-515460. With the specified parameters and the plant mentioned, the result according to the invention can be generated reliably repeatedly.
- the invention thus has the advantage that the inventors have found a way, on the one hand, to prevent scaling and surface decarburization and, on the other hand, to exclude the formation of intermetallic or soft ferritic phases without rendering the process excessively complicated. In addition, the load-bearing cross sections are not reduced.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Laser Beam Processing (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
- Coating With Molten Metal (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102018104829.7A DE102018104829A1 (de) | 2018-03-02 | 2018-03-02 | Verfahren zur Schweißvorbehandlung beschichteter Stahlbleche |
PCT/EP2019/054877 WO2019166498A1 (de) | 2018-03-02 | 2019-02-27 | VERFAHREN ZUR SCHWEIßVORBEHANDLUNG BESCHICHTETER STAHLBLECHE |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3758887A1 true EP3758887A1 (de) | 2021-01-06 |
Family
ID=65763411
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19710615.6A Withdrawn EP3758887A1 (de) | 2018-03-02 | 2019-02-27 | VERFAHREN ZUR SCHWEIßVORBEHANDLUNG BESCHICHTETER STAHLBLECHE |
Country Status (9)
Country | Link |
---|---|
US (1) | US11919105B2 (de) |
EP (1) | EP3758887A1 (de) |
KR (1) | KR102594731B1 (de) |
CN (1) | CN111801192B (de) |
CA (1) | CA3091460A1 (de) |
DE (2) | DE102018104829A1 (de) |
MX (1) | MX2020009177A (de) |
RU (1) | RU2755485C1 (de) |
WO (1) | WO2019166498A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102018104829A1 (de) | 2018-03-02 | 2019-09-05 | Voestalpine Automotive Components Linz Gmbh | Verfahren zur Schweißvorbehandlung beschichteter Stahlbleche |
WO2021130524A1 (en) * | 2019-12-24 | 2021-07-01 | Arcelormittal | Pre-coated steel sheet comprising an additional coating for increasing the mechanical strength of the weld metal zone of a welded steel part prepared from said pre-coated sheet |
US20240011138A1 (en) * | 2020-12-18 | 2024-01-11 | Posco Co., Ltd | Method for manufacturing tailor welded blank using steel sheet for hot pressing having al-fe-based intermetallic alloy layer |
CN113118630A (zh) * | 2021-04-21 | 2021-07-16 | 攀钢集团攀枝花钢铁研究院有限公司 | 差厚度激光拼焊板的制备方法 |
DE102021130686A1 (de) | 2021-11-23 | 2023-05-25 | Salzgitter Flachstahl Gmbh | Verfahren zum Laser-Überlappschweißen von hochfesten Stahlflachprodukten und Flachstahlverbund mit verschweißten Stahlflachprodukten |
CN117583852A (zh) * | 2024-01-19 | 2024-02-23 | 凌云吉恩斯科技有限公司 | 一种Al-Si涂层热成型钢的热成型件接头的制备方法 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2883646A1 (de) * | 2013-12-12 | 2015-06-17 | Autotech Engineering, A.I.E. | Verfahren zum Verbinden von zwei Rohlingen sowie Rohlinge und erhaltenes Produkte |
Family Cites Families (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5918367A (en) * | 1996-04-19 | 1999-07-06 | Unisia Jecs Corporation | Method of producing valve lifter |
JP2001353591A (ja) * | 2000-06-12 | 2001-12-25 | Showa Denko Kk | アルミニウム合金のレーザ溶接給線用フィラーワイヤ、アルミニウム合金の溶接方法およびアルミニウム合金製溶接部材 |
US6751516B1 (en) * | 2000-08-10 | 2004-06-15 | Richardson Technologies, Inc. | Method and system for direct writing, editing and transmitting a three dimensional part and imaging systems therefor |
DE10324274A1 (de) * | 2003-05-28 | 2004-12-16 | Daimlerchrysler Ag | Verfahren zum Schweißen von Metallkörpern |
WO2007118939A1 (fr) * | 2006-04-19 | 2007-10-25 | Arcelor France | Procede de fabrication d'une piece soudee a tres hautes caracteristiques mecaniques a partir d'une tole laminee et revetue |
US20080016684A1 (en) * | 2006-07-06 | 2008-01-24 | General Electric Company | Corrosion resistant wafer processing apparatus and method for making thereof |
FR2903623B1 (fr) | 2006-07-12 | 2008-09-19 | L'air Liquide | Procede de soudage hybride laser-arc de pieces metalliques aluminiees |
DE102008006241A1 (de) * | 2008-01-25 | 2009-07-30 | Thyssenkrupp Steel Ag | Verfahren und Vorrichtung zum Abtragen einer metallischen Beschichtung |
DE102011017144A1 (de) * | 2011-04-12 | 2012-10-18 | Salzgitter Europlatinen GmbH | Verfahren zum Laserstrahlschweißen eines mit einem metallischen Überzug versehenen Vorproduktes aus Stahl |
DE102011114555A1 (de) * | 2011-09-30 | 2013-04-04 | Thyssenkrupp Tailored Blanks Gmbh | Verfahren und Vorrichtung zumVerbindungsschweißen von beschichteten Blechen |
KR101382981B1 (ko) * | 2011-11-07 | 2014-04-09 | 주식회사 포스코 | 온간프레스 성형용 강판, 온간프레스 성형 부재 및 이들의 제조방법 |
KR20130122493A (ko) * | 2012-04-30 | 2013-11-07 | 주식회사 신영 | Tbph 기술을 적용한 차체 부품 제조 방법 |
EP2855070B1 (de) * | 2012-05-25 | 2019-12-11 | Shiloh Industries, Inc. | Blechteil mit schweisskerbe und verfahren zur formung davon |
US9604311B2 (en) * | 2012-06-29 | 2017-03-28 | Shiloh Industries, Inc. | Welded blank assembly and method |
US9379258B2 (en) * | 2012-11-05 | 2016-06-28 | Solexel, Inc. | Fabrication methods for monolithically isled back contact back junction solar cells |
DE102012111118B3 (de) | 2012-11-19 | 2014-04-03 | Wisco Tailored Blanks Gmbh | Verfahren zum Laserschweißen eines oder mehrerer Werkstücke aus härtbarem Stahl im Stumpfstoß |
KR20150086485A (ko) * | 2012-11-30 | 2015-07-28 | 쉴로 인더스트리즈 인코포레이티드 | 금속 박편에 용접 노치를 형성하는 방법 |
KR101448473B1 (ko) | 2012-12-03 | 2014-10-10 | 현대하이스코 주식회사 | 테일러 웰디드 블랭크, 그 제조방법 및 이를 이용한 핫스탬핑 부품 |
DE102013101953A1 (de) * | 2013-02-27 | 2014-08-28 | Wisco Lasertechnik Gmbh | Verfahren zum Aneinanderfügen von mit einer metallischen Beschichtung versehenen Platinen oder Bändern aus Stahl durch Laserstrahlschweißen |
DE102013215346B4 (de) * | 2013-08-05 | 2017-12-07 | Trumpf Laser- Und Systemtechnik Gmbh | Verfahren zum Laserentschichten von beschichteten Blechen und zugehörige Laserentschichtungsanlage |
DE102014001979A1 (de) | 2014-02-17 | 2015-08-20 | Wisco Tailored Blanks Gmbh | Verfahren zum Laserschweißen eines oder mehrerer Werkstücke aus härtbarem Stahl im Stumpfstoß |
WO2015162445A1 (fr) * | 2014-04-25 | 2015-10-29 | Arcelormittal Investigación Y Desarrollo Sl | Procede et dispositif de preparation de toles d'acier aluminiees destinees a etre soudees puis durcies sous presse; flan soude correspondant |
ES2627220T3 (es) | 2014-05-09 | 2017-07-27 | Gestamp Hardtech Ab | Métodos para la unión de dos formatos y los formatos y los productos obtenidos |
WO2015192219A1 (en) * | 2014-06-19 | 2015-12-23 | Magna International Inc. | Process and system for laser welding pre-coated sheet metal workpieces |
DE112015004224T5 (de) * | 2014-09-17 | 2017-07-06 | Magna International Inc. | Verfahren zum Laserschweißen von beschichteten Stahlblechen unter Hinzufügung von Legierungselementen |
DE102015115915A1 (de) * | 2015-09-21 | 2017-03-23 | Wisco Tailored Blanks Gmbh | Laserschweißverfahren zur Herstellung eines Blechhalbzeugs aus härtbarem Stahl mit einer Beschichtung auf Aluminium- oder Aluminium-Silizium-Basis |
WO2017203321A1 (en) * | 2016-05-23 | 2017-11-30 | Arcelormittal | Method for preparing a precoated sheet and associated installation |
CN206105157U (zh) * | 2016-10-19 | 2017-04-19 | 昆山信杰汽车部件有限公司 | 一种高张力镀铝硅涂层钢板的焊接结构 |
CN106363301A (zh) * | 2016-10-19 | 2017-02-01 | 昆山信杰汽车部件有限公司 | 一种高张力镀铝硅涂层钢板焊接的加工方法及其拼接结构 |
CN106334875A (zh) * | 2016-10-27 | 2017-01-18 | 宝山钢铁股份有限公司 | 一种带铝或者铝合金镀层的钢制焊接部件及其制造方法 |
CN106695121B (zh) * | 2017-01-09 | 2019-12-10 | 上海交通大学 | 一种压缩空气辅助的激光熔融去除镀层的装置及方法 |
DE102018104829A1 (de) | 2018-03-02 | 2019-09-05 | Voestalpine Automotive Components Linz Gmbh | Verfahren zur Schweißvorbehandlung beschichteter Stahlbleche |
-
2018
- 2018-03-02 DE DE102018104829.7A patent/DE102018104829A1/de active Pending
-
2019
- 2019-02-27 KR KR1020207025287A patent/KR102594731B1/ko active IP Right Grant
- 2019-02-27 EP EP19710615.6A patent/EP3758887A1/de not_active Withdrawn
- 2019-02-27 RU RU2020128027A patent/RU2755485C1/ru active
- 2019-02-27 CN CN201980016649.3A patent/CN111801192B/zh active Active
- 2019-02-27 MX MX2020009177A patent/MX2020009177A/es unknown
- 2019-02-27 WO PCT/EP2019/054877 patent/WO2019166498A1/de active Application Filing
- 2019-02-27 CA CA3091460A patent/CA3091460A1/en active Pending
- 2019-02-27 DE DE202019005926.1U patent/DE202019005926U1/de active Active
-
2020
- 2020-09-02 US US17/010,304 patent/US11919105B2/en active Active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2883646A1 (de) * | 2013-12-12 | 2015-06-17 | Autotech Engineering, A.I.E. | Verfahren zum Verbinden von zwei Rohlingen sowie Rohlinge und erhaltenes Produkte |
Non-Patent Citations (2)
Title |
---|
EDWARDS JUNIUS DAVID ET AL: "Permeability of rubber to gases, by Junius David Edwards, associate chemist, S. F. Pickering, associate chemist, Bureau of Standards. July 12, 1920", 25 February 1920 (1920-02-25), Washington, pages 327 - 362, XP055837023, Retrieved from the Internet <URL:https://nvlpubs.nist.gov/nistpubs/scientificpapers/nbsscientificpaper387vol16p327_a2b.pdf> [retrieved on 20210902] * |
See also references of WO2019166498A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102018104829A1 (de) | 2019-09-05 |
RU2755485C1 (ru) | 2021-09-16 |
WO2019166498A1 (de) | 2019-09-06 |
CA3091460A1 (en) | 2019-09-06 |
MX2020009177A (es) | 2020-11-25 |
US11919105B2 (en) | 2024-03-05 |
CN111801192A (zh) | 2020-10-20 |
KR102594731B1 (ko) | 2023-10-25 |
CN111801192B (zh) | 2023-03-14 |
DE202019005926U1 (de) | 2023-06-16 |
US20200398377A1 (en) | 2020-12-24 |
KR20200120922A (ko) | 2020-10-22 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3676047B1 (de) | Verfahren zum laserstrahlschweissen eines oder mehrerer stahlbleche aus presshaertbarem mangan-borstahl | |
EP3352940B1 (de) | Laserschweissverfahren zur herstellung eines blechhalbzeugs aus härtbarem stahl mit einer beschichtung auf aluminium- oder aluminium-silizium-basis | |
WO2019166498A1 (de) | VERFAHREN ZUR SCHWEIßVORBEHANDLUNG BESCHICHTETER STAHLBLECHE | |
DE102012111118B3 (de) | Verfahren zum Laserschweißen eines oder mehrerer Werkstücke aus härtbarem Stahl im Stumpfstoß | |
EP3107681B1 (de) | Verfahren zum laserschweissen eines oder mehrerer werkstücke aus härtbarem stahl im stumpfstoss | |
EP2961560A1 (de) | Verfahren zum aneinanderfügen von mit einer metallischen beschichtung versehenen platinen oder bändern aus stahl durch laserstrahlschweissen | |
AT16699U2 (de) | Verfahren zur Bereitstellung von Aluminium-beschichteten Stahlblechen | |
DE102017120611B4 (de) | Verfahren und Vorrichtung zum Schmelzschweißen eines oder mehrerer Stahlbleche aus presshärtbarem Stahl | |
EP3774167A1 (de) | VERFAHREN ZUM SCHWEIßEN BESCHICHTETER STAHLBLECHE | |
EP3946801B1 (de) | Verfahren zum schmelzschweissen eines oder mehrerer stahlbleche aus presshärtbarem stahl | |
WO2021009078A1 (de) | Verfahren zum herstellen einer beschichteten massgeschneiderten platine (tailored welded bank) mittels laserstrahlschweissen oder laser-metallschutzgas-hybridschweissen und zusatzdraht sowie dessen verwendung hierfür | |
EP4065307B1 (de) | Verfahren zum verschweissen beschichteter stahlbleche | |
EP4065306B1 (de) | Verfahren zum verschweissen beschichteter stahlbleche | |
WO2022128614A1 (de) | Verfahren zur herstellung einer fügeverbindung und entsprechend verbundene blechwerkstücke |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: UNKNOWN |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20200909 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
TPAC | Observations filed by third parties |
Free format text: ORIGINAL CODE: EPIDOSNTIPA |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20210907 |
|
TPAC | Observations filed by third parties |
Free format text: ORIGINAL CODE: EPIDOSNTIPA |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20230602 |
|
P01 | Opt-out of the competence of the unified patent court (upc) registered |
Effective date: 20230706 |