EP3500394A1 - Procédé de soudage hybride laser/mig-mag d'éléments structuraux à grains fins et à haute résistance, avec une conduction thermique par induction ciblée - Google Patents

Procédé de soudage hybride laser/mig-mag d'éléments structuraux à grains fins et à haute résistance, avec une conduction thermique par induction ciblée

Info

Publication number
EP3500394A1
EP3500394A1 EP17745670.4A EP17745670A EP3500394A1 EP 3500394 A1 EP3500394 A1 EP 3500394A1 EP 17745670 A EP17745670 A EP 17745670A EP 3500394 A1 EP3500394 A1 EP 3500394A1
Authority
EP
European Patent Office
Prior art keywords
components
laser beam
strength
hbw
mpa
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.)
Pending
Application number
EP17745670.4A
Other languages
German (de)
English (en)
Inventor
Heiko DRAWE
Roman LITSCHMANN
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stahlkontor GmbH and Co KG
Original Assignee
Stahlkontor GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Stahlkontor GmbH and Co KG filed Critical Stahlkontor GmbH and Co KG
Publication of EP3500394A1 publication Critical patent/EP3500394A1/fr
Pending legal-status Critical Current

Links

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
    • B23K26/346—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
    • 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
    • B23K26/00—Working by laser beam, e.g. welding, cutting or boring
    • B23K26/70—Auxiliary operations or equipment
    • 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
    • B23K28/00—Welding or cutting not covered by any of the preceding groups, e.g. electrolytic welding
    • B23K28/02—Combined welding or cutting procedures or apparatus
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B23K9/164—Arc welding or cutting making use of shielding gas making use of a moving fluid
    • 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
    • B23K9/00—Arc welding or cutting
    • B23K9/235—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
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/04—Steel or steel alloys

Definitions

  • the invention relates to laser beam MSG hybrid welding process for the non-detachable joining of two or more components made of a high-strength steel.
  • One of the joining methods is a laser beam welding method, in which the joint is melted by means of a laser beam directed thereon and then solidifies.
  • metal inert gas welding process which is a universally applicable welding process which can be well controlled using modern welding power sources and wire feed units.
  • This metal inert gas welding process also called MSG welding process or MIG or MAG process
  • MIG MIG
  • MAG MAG
  • a material H340 is used with a maximum sheet thickness of one millimeter in order to form two components, which are to be connected inextricably by laser beam welding together.
  • the resulting finished component (initially consisting of two individual components), has a yield strength of maximum 420 MPa with a maximum microhardness of 300 HV.
  • Such type formed components meet the requirements in terms of lightweight construction in motor vehicles, but not safety-critical safety requirements under attack or when such vehicles are exposed to explosions.
  • the invention is therefore based on the object, a laser beam MSG hybrid welding process for the permanent joining of at least two components made of security steel (steel with ballistic properties for primary protection of persons in military and / or civil applications) to the effect that they also highest demands , in particular bombardment or explosion stresses, suffice.
  • This object is achieved in that the area around the joint is heated to 150 ° C to 300 ° C inductively.
  • the inductive heating also called preheating, that is, the external heat in the pre- or post-process during or after the welding process
  • preheating that is, the external heat in the pre- or post-process during or after the welding process
  • the heating to a range of 100 ° C to 300 ° C has the advantage of the effect described, namely that the areas of the components to be joined around the joint cool down the slower the higher they are heated. It is important to ensure that the heating is not done with temperatures that a Influence on a structural change of the high-strength fine-grained structural steels.
  • the heating is not only dependent on the high-strength steel used, but also on the geometric extension (area) of zufugenden components and their material thickness (thickness).
  • a particularly important range of a heating temperature is the range of 150 ° C to 200 ° C, since in this temperature range, the inductive heating can be performed quickly and at a reasonable cost and at the same time the avoidance of crack-prone areas is avoided. This is done unconditionally and advantageously for the treatment of components made of safety steels (in particular for use in defense technology areas), since in this way the mechanical-technological properties of the joined components, which form a reinforcing component, in the joining region and around it in a surprising manner is increased.
  • the high-strength steel from which the components are made have a yield strength of at least 690 MPa and a hardness of at least 420 HBW . That is, according to the invention, high-strength steels having a yield strength of at least 690 MPa and a hardness of at least 420 HBW are used and joined together in an undetachable manner by means of the laser beam MSG hybrid welding process.
  • the inductive heating of the area around the joint to 100 degrees Celsius to 300 degrees Celsius in connection with the material properties causes an extreme strength of the manufactured device, in which the two or more components are used.
  • a bombardment of components such as the z. B. mentioned Vehicle components, or explosions, to which the components are exposed, these components withstand particularly well due to the combination of material properties and joining parameters.
  • the heating takes place selectively before and / or after the execution of the welding process. In all three cases, it is ensured that the components to be joined have such an energy that the slow cooling effect after welding is achieved.
  • the heating to the predetermined temperature range before or after the execution of the welding process, to avoid that the high-strength steel after completion of the welding process in the heat-affected zone tends to form very hard microstructural constituents
  • the welding process is carried out at a defined speed as a function of the material thickness (thickness) of the components to be joined.
  • the optimal the material thickness are matched.
  • two objectives are pursued and implemented in an advantageous manner: high welding speed and high load capacity under extreme loads compared to partially mechanized and / or fully mechanized welding processes.
  • an induction coil for inductive heating with the defined, preferably the same speed of the laser beam is moved in front of and / or behind the laser beam.
  • the device for laser beam MSG hybrid welding process with the device for warming up (generally induction coil) can be combined with one another in an advantageous manner.
  • the area of the welding device to be heated leads and / or lags, so that always takes place the required heating to avoid too fast cooling after performing the welding process.
  • the devices for welding and for heating can thus be coupled together.
  • the warming of the joint also has the advantage that, above all, longer welds can be performed. So far, it was not possible with the known welding methods to weld longer welds, which extend in particular over the total length of the Zu colgenden components in one pass. It always had to be welded in sections (eg mit step method) in order to minimize unwanted distortion of the components.
  • the advantages are summarized thus in the optimal setting of the mechanical-technological properties of the joining area, the business consideration in terms of higher welding speed and the almost distortion-free welding of oversize components.
  • groups of high-strength steels for defense use are assemblies with material properties up to grade Z according to TL 2350-0000, as well as those according to the standards: CEN ISO / TR 15608, Tab. 1, group third
  • the high-strength steel has a yield strength of at least 800 MPa and a hardness of at least 450 HBW. This means that high strength steels with these material properties are used to handle them to be unsolvable in the said method. Due to the improved, that is increased material properties, the protective effects are thereby further increased.
  • a particularly preferred choice of high strength steels to be used is that the high strength steel of each component has a yield strength in a range of at least 1000 MPa to a maximum of 1750 MPa and a hardness in a range of at least 475 HBW to at most 550 HBW. Due to the use of high-strength steels with these material properties, the inductive heating before and / or after the joining can be optimally adapted to the components that are to be joined. The use of steels with the mentioned material properties (yield strength and hardness) makes it possible to realize devices with such joined components which meet particularly high requirements.
  • an apparatus of high strength steels according to the invention may be formed when the high strength steel has a yield strength in a range of at least 1100 MPa to a maximum of 1650 MPa and a hardness in a range of at least 420 HBW to at most 530 HBW. Also, to achieve the required stabilities of devices upon bombardment or exposure to explosions, there is thus an alternative material available which can be used to form the device.
  • the at least two components to be joined have a material thickness of at least 3 millimeters (three millimeters, 3 mm).
  • This minimum material thickness ensures that devices such as vehicle components for civil or military use are adequately dimensioned when such devices, such as vehicles, are under attack or exposed to explosions.
  • the provided according to the invention material properties of the high-strength steels from which the components consist, their non-detachable assembly and the minimum material thickness lead overall to an advantageous overall protection of the device, which also meets the highest safety requirements.
  • the yield strength R e is a material characteristic value and denotes the stress up to which a material exhibits no permanent plastic deformation in the case of uniaxial and component-free tensile stress. It is a yield point.
  • the material If the value falls below the value, the material returns elastically to its original shape after unloading; if it is exceeded, however, a change in shape remains, ie, in the case of a sample, an extension.
  • the yield strength or the yield strength is used to determine the elastic limit of a material.
  • the yield strength is easily determined by established and standardized tensile tests and has the greatest technical importance. It is expressed in units of "MPa" (Megapascal) or "N / mm 2 " (Newton per square millimeter).
  • Hardness is the mechanical resistance that a material opposes to the mechanical penetration of another body. Depending on the type of action one distinguishes different types of hardness. So hardness is not only the resistance to harder bodies, but also to softer and equally hard body. It is specified in the unit “HB” (Brinell hardness) or “HBW” (Brinell hardness, W stands for the material of the test ball: tungsten carbide hard metal) and determined according to established standardized measuring methods.

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Optics & Photonics (AREA)
  • Laser Beam Processing (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

L'invention concerne un procédé de soudage hybride laser/MIG-MAG destiné à l'assemblage fixe d'au moins deux éléments structuraux en acier haute résistance, la zone autour du point de soudure étant chauffée par induction à une température comprise entre 100°C et 300°C, de préférence un procédé destiné à une application en génie militaire, le chauffage autour du point d'assemblage s'élevant à une température de 150°C à maximum 200°C.
EP17745670.4A 2016-08-17 2017-07-14 Procédé de soudage hybride laser/mig-mag d'éléments structuraux à grains fins et à haute résistance, avec une conduction thermique par induction ciblée Pending EP3500394A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102016115239 2016-08-17
PCT/EP2017/067863 WO2018033310A1 (fr) 2016-08-17 2017-07-14 Procédé de soudage hybride laser/mig-mag d'éléments structuraux à grains fins et à haute résistance, avec une conduction thermique par induction ciblée

Publications (1)

Publication Number Publication Date
EP3500394A1 true EP3500394A1 (fr) 2019-06-26

Family

ID=59485325

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17745670.4A Pending EP3500394A1 (fr) 2016-08-17 2017-07-14 Procédé de soudage hybride laser/mig-mag d'éléments structuraux à grains fins et à haute résistance, avec une conduction thermique par induction ciblée

Country Status (5)

Country Link
US (1) US20190184497A1 (fr)
EP (1) EP3500394A1 (fr)
CN (1) CN109641309A (fr)
DE (1) DE102017115866A1 (fr)
WO (1) WO2018033310A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019113697A1 (de) 2019-05-22 2020-11-26 Stahlkontor Gmbh & Co Kg Doppel-Laser-Hybrid-Prozess
DE102020212859A1 (de) 2020-10-12 2022-04-14 Fronius International Gmbh Laser-Hybrid-Schweißverfahren

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001045882A2 (fr) * 1999-11-16 2001-06-28 Triton Systems, Inc. Production par laser de composites a matrice metal renforcee de maniere discontinue
DE102005035432A1 (de) * 2005-07-28 2007-02-01 Linde Ag Bereitstellen blasenfreien Kohlendioxids
CN100548559C (zh) * 2006-09-21 2009-10-14 中国石油天然气集团公司 一种13Cr油井管试验实物制备方法
CN101337298A (zh) * 2007-07-05 2009-01-07 四川神坤装备股份有限公司 一种低合金高强钢焊接工艺方法
CN103252589A (zh) * 2012-02-21 2013-08-21 沈阳新松机器人自动化股份有限公司 用于厚板高强或超高强钢拼焊的激光-mag复合焊接方法
CN104014914B (zh) * 2014-06-04 2016-03-30 浙江省海洋开发研究院 船体结构中高强度钢的焊接方法
CN105798462A (zh) * 2014-12-31 2016-07-27 哈尔滨润德伟业科技发展有限公司 一种利用激光-mag复合热源的焊接方法

Also Published As

Publication number Publication date
CN109641309A (zh) 2019-04-16
US20190184497A1 (en) 2019-06-20
DE102017115866A1 (de) 2018-02-22
WO2018033310A1 (fr) 2018-02-22

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