DE102011113267A1 - Connecting metal components which are at least locally ultra-high strength comprises interconnecting the components by thermal joining process (spot welding), having joining point and subjecting composite of the components to heat treatment - Google Patents
Connecting metal components which are at least locally ultra-high strength comprises interconnecting the components by thermal joining process (spot welding), having joining point and subjecting composite of the components to heat treatment Download PDFInfo
- Publication number
- DE102011113267A1 DE102011113267A1 DE102011113267A DE102011113267A DE102011113267A1 DE 102011113267 A1 DE102011113267 A1 DE 102011113267A1 DE 102011113267 A DE102011113267 A DE 102011113267A DE 102011113267 A DE102011113267 A DE 102011113267A DE 102011113267 A1 DE102011113267 A1 DE 102011113267A1
- Authority
- DE
- Germany
- Prior art keywords
- components
- heat treatment
- metal components
- composite
- joint
- 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- Withdrawn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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/42—Induction heating
-
- 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
- B23K11/00—Resistance welding; Severing by resistance heating
- B23K11/10—Spot welding; Stitch welding
- B23K11/11—Spot 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
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2221/00—Treating localised areas of an article
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2251/00—Treating composite or clad material
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D2251/00—Treating composite or clad material
- C21D2251/04—Welded or brazed overlays
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
- Heat Treatment Of Articles (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Verbinden von wenigstens zwei Metallbauteilen und einen Verbund von wenigstens zwei Metallbauteilen.The invention relates to a method for joining at least two metal components and a composite of at least two metal components.
Im Fahrzeugbau ist es unter anderem aus Gewichtseinsparungsgründen weit verbreitet, ultrahochfeste Bauteile in sicherheitsrelevanten Bereichen der Fahrzeugkarosserie zu verbauen, wobei diese Bauteile üblicherweise mit einem thermischen Fügeverfahren gefügt werden. Unter ultrahochfesten Metallen werden dabei Metalle verstanden, die eine minimale Zugfestigkeit von 700 MPa aufweisen. Die zumeist ein martensitisches Gefüge aufweisenden Bauteile besitzen eine hohe spezifische Festigkeit, jedoch nimmt deren Festigkeit durch eine entsprechende Wärmeeinleitung beim thermischen Fügen, z. B. beim Punktschweißen, in Verbindung mit einem langsamen Abkühlen im Bereich der Fügestellen lokal ab, so dass sich nach dem Fügevorgang Bereiche mit einem hohen Härtgradienten rund den Bereich der Fügestellen ausbilden. Dies kann sich bei Verformungen des Verbunds im Lastfall, beispielsweise bei einem Crash, negativ auswirken.In vehicle construction, among other things, for weight saving reasons, it is widely used to install ultra-high-strength components in safety-relevant areas of the vehicle body, these components usually being joined by a thermal joining method. Ultra-high-strength metals are understood as meaning metals which have a minimum tensile strength of 700 MPa. The usually a martensitic structure having components have a high specific strength, but decreases their strength by a corresponding heat input during thermal joining, z. As in spot welding, in conjunction with a slow cooling in the joints locally, so that form after the joining process areas with a high hardness gradient around the area of the joints. This can have a negative effect on deformation of the composite in the event of a load, for example in the event of a crash.
Es ist daher die Aufgabe der vorliegenden Erfindung eine Lösung zu schaffen, mit der eine verbesserte Gefügestruktur im Bereich von Fügestellen ultrahochfester und thermisch gefügter Bauteile ermöglicht wird.It is therefore the object of the present invention to provide a solution with which an improved microstructure in the region of joints of ultra-high-strength and thermally bonded components is made possible.
Diese Aufgabe wird durch ein Verfahren zum Verbinden von wenigstens zwei Metallbauteilen mit den Merkmalen des Patentanspruchs 1 sowie durch einen Verbund von wenigstens zwei Metallbauteilen mit den Merkmalen des Patentanspruchs 6 gelöst. Vorteilhafte Ausgestaltungen mit zweckmäßigen und nicht-trivialen Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen angegeben.This object is achieved by a method for connecting at least two metal components with the features of patent claim 1 and by a composite of at least two metal components having the features of patent claim 6. Advantageous embodiments with expedient and non-trivial developments of the invention are specified in the dependent claims.
Ein erfindungsgemäßes Verfahren zeichnet sich dadurch aus, dass wenigstens zwei zumindest lokal ultrahochfeste Metallbauteile durch ein thermisches Fügeverfahren, insbesondere durch Punktschweißen, im Bereich wenigstens einer Fügestelle miteinander verbunden werden, wonach der Verbund der wenigstens zwei Metallbauteile im Bereich der wenigstens einen Fügestelle einer Wärmebehandlung unterzogen wird. Während also bislang nach dem thermischen Fügen ultrahochfester Bauteile keine weitere Wärmebehandlung am Verbund stattfindet, so dass die entsprechenden Härtegradienten im Bereich der Fügestellen verbleiben, ist es demgegenüber erfindungsgemäß vorgesehen, dass nach dem thermischen Fügen der Metallbauteile der Bereich der Fügestelle des Verbunds einer lokalen Wärmebehandlung unterzogen wird. Dadurch wird die Werkstofffestigkeit großflächig rund um den Bereich der Fügefläche reduziert und vergleichmäßigt. Große Härtegradienten im Bereich der Fügeverbindung werden somit nachträglich beseitigt, so dass ein besseres Verhalten der Fügeverbindung bei einem Lastfall erzielt wird.A method according to the invention is characterized in that at least two at least locally ultra-high-strength metal components are joined together by a thermal joining method, in particular by spot welding in the region of at least one joint, after which the composite of the at least two metal components is subjected to a heat treatment in the region of the at least one joint , So far so far after the thermal joining of ultra-high-strength components no further heat treatment takes place on the composite, so that the corresponding hardness gradients remain in the joints, it is inventively provided that subjected to the thermal joining of the metal components, the region of the joint of the composite of a local heat treatment becomes. As a result, the material strength is reduced over a large area around the area of the joint surface and made uniform. Large hardness gradients in the region of the joint connection are thus subsequently eliminated, so that a better behavior of the joint connection is achieved in a load case.
Eine vorteilhafte Ausführungsform der Erfindung zeichnet sich zudem dadurch aus, dass die Wärmebehandlung induktiv erfolgt. Dadurch wird der Erwärmungsbereich exakt begrenzt und es wird nicht das gesamte Werkstück erwärmt. Zudem kann die induktive Wärmebehandlung schnell und flexibel durchgeführt werden, wobei keine zeitintensiven Ofenzeiten anfallen. Des Weiteren ist es mittels der Induktionstechnik möglich, beliebig viele Fügepunktbereiche einer Wärmebehandlung zu unterziehen.An advantageous embodiment of the invention is also characterized in that the heat treatment is carried out inductively. As a result, the heating area is exactly limited and not the entire workpiece is heated. In addition, the inductive heat treatment can be performed quickly and flexibly, with no time-consuming furnace times incurred. Furthermore, it is possible by means of induction technology to subject as many joining point areas to a heat treatment.
Eine weitere vorteilhafte Ausführungsform der Erfindung sieht vor, dass der Verbund der wenigsten zwei Metallbauteile im Bereich der wenigstens einen Fügestelle auf 300°C bis 700°C erwärmt und auf dieser Temperatur für mindestens 3 Sek. gehalten wird. Die genauen Parameter hängen von den gewünschten Eigenschaften im Bereich der Fügestelle ab. In dem genannten Temperaturbereich und der angegebenen Mindesthaltedauer wird üblicherweise schon eine wesentliche Änderung der Werkstoffeigenschaften im Bereich der Fügestelle erzielt.A further advantageous embodiment of the invention provides that the composite of at least two metal components in the region of the at least one joint is heated to 300 ° C to 700 ° C and held at this temperature for at least 3 sec. The exact parameters depend on the desired properties in the area of the joint. In the stated temperature range and the specified minimum holding time, a substantial change in the material properties in the region of the joint is usually already achieved.
Des Weiteren ist es bei einer erfindungsgemäßen Ausführungsform des Verfahrens besonders vorteilhaft, wenn die Größe des Bereichs der wenigstens einen Fügestelle, der einer Wärmebehandlung unterzogen wird, stufenlos einstellbar ist.Furthermore, in the case of an embodiment of the method according to the invention, it is particularly advantageous if the size of the region of the at least one joint, which is subjected to a heat treatment, is infinitely adjustable.
Je nach Einsatzbereich des gefügten Verbunds ist es somit möglich, den Bereich, der einer Wärmebehandlung unterzogen werden soll, so groß zu wählen, dass die gewünschten Härteeigenschaften des Verbunds eingestellt werden können.Depending on the area of use of the bonded composite, it is thus possible to select the area to be subjected to a heat treatment to be so large that the desired hardness properties of the composite can be set.
Eine weitere vorteilhafte Ausführungsform der Erfindung zeichnet sich dadurch aus, dass die Wärmebehandlung und das Fügeverfahren in einem gemeinsamen Verfahren integriert sind. Somit ist es beispielsweise möglich, die Wärmebehandlung des gefügten Verbundes gegebenenfalls ohne ein Umrüsten in derselben Vorrichtung durchzuführen, in der bereits das Fügeverfahren durchgeführt worden ist. Dadurch können beispielsweise Wechselzeiten in der Produktion reduziert werden, was wiederum in einer effizienteren Produktion mit geringeren Herstellkosten resultiert.A further advantageous embodiment of the invention is characterized in that the heat treatment and the joining method are integrated in a common method. Thus, it is possible, for example, to carry out the heat treatment of the bonded composite, if appropriate, without retooling in the same device in which the joining process has already been carried out. As a result, for example, changeover times in production can be reduced, which in turn results in more efficient production with lower production costs.
Schließlich ist erfindungsgemäß ein Verbund von wenigstens zwei Metallbauteilen vorgesehen, welche zumindest lokal ultrahochfest und durch ein thermisches Fügeverfahren, insbesondere durch Punktschweißen, im Bereich wenigstens einer Fügestelle miteinander verbunden sind, in deren Bereich der Verbund der wenigstens zwei Metallbauteile einer anschließende Wärmebehandlung unterzogen ist. Dadurch wird ein Verbund aus ultrahochfesten und thermisch gefügten Metallbauteilen zur Verfügung gestellt, der aufgrund der anschließenden Wärmebehandlung im Bereich um die Fügeverbindung eine annähernd homogene Werkstofffestigkeit und somit ein gutes Lastverhalten aufweist.Finally, according to the invention, a composite of at least two metal components is provided, which are interconnected at least locally with ultra-high strength and by a thermal joining process, in particular by spot welding, in the region of at least one joint, in whose region the composite of at least two Metal components is subjected to a subsequent heat treatment. As a result, a composite of ultra-high-strength and thermally joined metal components is made available, which has an approximately homogeneous material strength and thus a good load behavior due to the subsequent heat treatment in the area around the joint.
Weitere Vorteile, Merkmale und Einzelheiten der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines bevorzugten Ausführungsbeispiels sowie anhand der Zeichnung. Die vorstehend in der Beschreibung genannten Merkmale und Merkmalskombination sowie die nachfolgend in der Figurenbeschreibung genannten und/oder in den Figuren alleine gezeigten Merkmale und Merkmalskombinationen sind nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar, ohne den Rahmen der Verbindung zu verlassen.Further advantages, features and details of the invention will become apparent from the following description of a preferred embodiment and from the drawing. The features and feature combination mentioned above in the description as well as the features and feature combinations mentioned below in the description of the figures and / or in the figures alone can be used not only in the respectively indicated combination but also in other combinations or in isolation, without the scope of Leave connection.
Die Zeichnung zeigt in:The drawing shows in:
In
Bei den gezeigten ultrahochfesten Metallbauteilen
In
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011113267A DE102011113267A1 (en) | 2011-09-13 | 2011-09-13 | Connecting metal components which are at least locally ultra-high strength comprises interconnecting the components by thermal joining process (spot welding), having joining point and subjecting composite of the components to heat treatment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011113267A DE102011113267A1 (en) | 2011-09-13 | 2011-09-13 | Connecting metal components which are at least locally ultra-high strength comprises interconnecting the components by thermal joining process (spot welding), having joining point and subjecting composite of the components to heat treatment |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102011113267A1 true DE102011113267A1 (en) | 2012-04-19 |
Family
ID=45896011
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102011113267A Withdrawn DE102011113267A1 (en) | 2011-09-13 | 2011-09-13 | Connecting metal components which are at least locally ultra-high strength comprises interconnecting the components by thermal joining process (spot welding), having joining point and subjecting composite of the components to heat treatment |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102011113267A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2016055337A (en) * | 2014-09-11 | 2016-04-21 | 高周波熱錬株式会社 | Welding method and welded structure |
JPWO2014025063A1 (en) * | 2012-08-10 | 2016-07-25 | 新日鐵住金株式会社 | Overlap welding member, automotive part, overlapping portion welding method, and overlap welding member manufacturing method |
-
2011
- 2011-09-13 DE DE102011113267A patent/DE102011113267A1/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPWO2014025063A1 (en) * | 2012-08-10 | 2016-07-25 | 新日鐵住金株式会社 | Overlap welding member, automotive part, overlapping portion welding method, and overlap welding member manufacturing method |
US10543562B2 (en) | 2012-08-10 | 2020-01-28 | Nippon Steel Corporation | Overlap-welded member, automobile part, method of welding overlapped portion, and method of manufacturing overlap-welded member |
JP2016055337A (en) * | 2014-09-11 | 2016-04-21 | 高周波熱錬株式会社 | Welding method and welded structure |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102010011368B4 (en) | Process for the production of press-hardened molded components | |
EP3212348B1 (en) | Method for producing a component by subjecting a sheet bar of steel to a forming process | |
DE102005046459B4 (en) | Process for the production of cold-finished precision steel tubes | |
DE202014009332U1 (en) | Structure component and device for producing a structural component | |
DE102009050533A1 (en) | Method and hot forming plant for producing a hardened, hot formed workpiece | |
DE102016013466A1 (en) | Body component for a motor vehicle and method for producing a body component | |
WO2013124283A1 (en) | Method for producing high-strength molded parts from high-carbon and high-manganese-containing austenitic cast steel with trip/twip properties | |
EP2340897A1 (en) | Thermomechanical processing method for rough sheet metal | |
DE102008014320A1 (en) | Ultrasonic assisted friction stir welding | |
DE112016003254T5 (en) | Body and chassis components with ultra-high strength | |
DE102010005263A1 (en) | Method for manufacturing component for mounting towing eye, involves warming component region at specific temperature and mechanically deforming component region | |
WO2016074666A1 (en) | Body- or chassis component of a motor vehicle with corrosion protection and production method therefor | |
DE102015106339A1 (en) | Method for the frontal laser welding of the joints of two adjoining joint flanges | |
DE102011118285A1 (en) | Producing motor vehicle component useful e.g. for specific absorption of kinetic energy in case of crash, comprises molding aluminum alloy to obtain semi-finished product, and subjecting the product to local heat treatment | |
EP3541966B1 (en) | Method for producing chassis parts from micro-alloyed steel with improved cold workability | |
DE102008050387B4 (en) | Sample for use in tensile testing machines | |
EP2551050A1 (en) | Method for welding thin-walled pipes using peak temperature welding | |
DE102009050623A1 (en) | Steel sheet component i.e. B-column, manufacturing method for vehicle, involves differently tempering preset regions of steel sheet after heating and before deformation and/or hardening of steel sheet | |
DE102016108836B4 (en) | Motor vehicle component and method for its production | |
EP3456456A1 (en) | Method for the preparation of tailor welded blank (twbs) | |
DE102011113267A1 (en) | Connecting metal components which are at least locally ultra-high strength comprises interconnecting the components by thermal joining process (spot welding), having joining point and subjecting composite of the components to heat treatment | |
EP2173515A1 (en) | Method for joining and joined connection of two components made of a metal material with strengthening and heat treatment of at least a part of at least one component before joining | |
DE102014108111A1 (en) | Method for producing a motor vehicle component from aluminum | |
DE102008028242A1 (en) | Method for cutting sheet components, involves heating sheet component before cutting locally within area of lip by laser beam for reduction of hardness | |
DE102012010696B4 (en) | Heat treatment process for a variety of light metal components |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R230 | Request for early publication | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |
Effective date: 20140401 |