WO2009115198A1 - Weld pool safety device - Google Patents

Weld pool safety device Download PDF

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Publication number
WO2009115198A1
WO2009115198A1 PCT/EP2009/001593 EP2009001593W WO2009115198A1 WO 2009115198 A1 WO2009115198 A1 WO 2009115198A1 EP 2009001593 W EP2009001593 W EP 2009001593W WO 2009115198 A1 WO2009115198 A1 WO 2009115198A1
Authority
WO
WIPO (PCT)
Prior art keywords
weld pool
header
heat exchanger
weld
aluminum
Prior art date
Application number
PCT/EP2009/001593
Other languages
German (de)
French (fr)
Inventor
Manfred Schönberger
Hermann Lebacher
Jörg DIETRICH
Thomas Maier
Original Assignee
Linde Aktiengesellschaft
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 Linde Aktiengesellschaft filed Critical Linde Aktiengesellschaft
Publication of WO2009115198A1 publication Critical patent/WO2009115198A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/02—Header boxes; End plates
    • F28F9/0219—Arrangements for sealing end plates into casing or header box; Header box sub-elements
    • 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
    • B23K33/00—Specially-profiled edge portions of workpieces for making soldering or welding connections; Filling the seams formed thereby
    • B23K33/004—Filling of continuous seams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
    • F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
    • F28F21/081—Heat exchange elements made from metals or metal alloys
    • F28F21/084—Heat exchange elements made from metals or metal alloys from aluminium or aluminium 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
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/14—Heat exchangers
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall

Definitions

  • the invention relates to a method for connecting at least two metallic components by means of welded connection with weld pool.
  • the invention will be described with reference to the example of a welded connection between a header and the heat exchanger block of a plate heat exchanger made of aluminum, but is not limited to this example, but generally suitable for the welded joint of two metallic components with weld pool.
  • Aluminum Plate-Fin Heat Exchanger Manufacturers 1 Association "ALPEMA Report (2000) essentially consist of a heat exchanger block with alternating passages with structured lamellae and means for supplying or removing the heat exchanging media (headers) The heat exchange takes place indirectly between media in adjacent passages, such heat exchangers commonly used in air separation, natural gas liquefaction or in petrochemical plants all in one Temperature range between -270 0 C and +120 0 C.
  • headers Due to the wide possible temperature range and the heat exchanger block, the means for supplying and discharging the media, which are referred to as headers, are usually made of aluminum or of an alloy mainly containing aluminum.
  • the headers are essentially cylindrical
  • Half shells executed which are typically connected to the heat exchanger block via a welded joint.
  • a weld pool fuse is needed due to the low viscosity of the aluminum.
  • the conventional method according to the prior art is described using the example of the welded connection of a header and a heat exchanger block in the patent US20020015857 and shown in Figures 1 and 2.
  • a weld pool 3 is mounted before the connection with the heat exchanger block 5.
  • the weld pool fuse 3 is also made of aluminum or stainless steel in the prior art and is connected to the header 1, usually via a welded joint 4.
  • the header 1 must be connected to the heat exchanger block 5 due to its geometry and function via a one-sided weld. Without the weld pool 3, the weld 2 would run too far apart due to the low viscosity of the aluminum, so that would not form a stable weld, in particular would be a correct Training the weld root is not given.
  • the described prior art method has disadvantages.
  • the necessary assembly of the weld pool protection significantly increases the assembly costs for the entire heat exchanger, which as a rule has numerous headers.
  • the weld pool fuse inside the header, which is flowed through in the operation of gaseous and / or liquid media, be attached.
  • the weld pool is a flow obstacle and an additional point of application for transfers or corrosion.
  • the present invention is therefore based on the object, a method for connecting at least two metallic components by means of welded joint with weld pool in such a way that additional installation effort is avoided.
  • the weld pool is effected by a corresponding shaping of at least one of the components to be connected.
  • the basic idea of the invention is to form at least one of the components to be connected in such a way that the necessary weld pool protection is already a component of the component.
  • the weld pool protection therefore does not have to be additionally mounted according to the invention on the components to be connected, but is already part of the component to be connected.
  • the entire assembly effort is therefore significantly minimized.
  • the molding is formed in the form of a profile, particularly preferably by an extruded profile or a rolled section.
  • the weld pool can be formed by simple and well-established in the art. The extra effort is low.
  • the erfindüngsdorfe method is particularly suitable for connecting at least two components, which consist mainly of aluminum and / or an aluminum alloy. Due to the low viscosity of aluminum during welding, a weld pool protection in the welded joint of materials consisting mainly of aluminum is particularly important.
  • the method according to the invention is particularly preferably used for connecting at least two components of a plate heat exchanger made of aluminum and / or an aluminum alloy, in particular for welding a header to the heat exchanger block of a plate heat exchanger.
  • the header must be welded on one side to the heat exchanger block.
  • the weld pool is formed directly on the header and is thus a direct part of the header.
  • the assembly work for the weld pool protection on the header is thus completely eliminated, whereby the production of a plate heat exchanger is significantly reduced.
  • the weld pool is not an additional component in the flow channel of the header but part of the header.
  • the flow profile of the gaseous and / or liquid media, which are passed through the header in the heat exchanger block improves significantly.
  • the weld pool protection no longer poses a flow obstacle. The risk of misplacement or corrosion is thus clearly mimicked.
  • Figure 1, 2 is an illustration of a welded joint with Sch spabadsch according to the prior art and Figure 3 shows an embodiment of the invention.
  • Figures 1 and 2 show a welded connection between the header 1 and the heat exchanger block 5 of a plate heat exchanger according to the prior art.
  • the weld pool 3 to secure the weld 2 was mounted before the welding process inside the header 1 and attached to the header 1, for example via a welded joint 4. The method has already been described in more detail in the general part of the description.
  • FIG. 3 shows an embodiment of the method according to the invention using the example of the connection of a header 1 to the heat exchanger block 5 of a plate heat exchanger made of aluminum.
  • the weld pool 3a is inventively formed on the header 1 and secures the weld 2.
  • the weld pool is already part of the header, their installation is omitted.
  • the flow profile inside the header is improved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Arc Welding In General (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Details Of Heat-Exchange And Heat-Transfer (AREA)
  • Laser Beam Processing (AREA)

Abstract

The invention relates to a method for connecting at least two metal components by means of a weld joint, having a weld pool safety device, such as the connection of a header to the heat exchanger block of a plate heat exchanger. According to the invention, the weld pool safety device (3a) is integrally formed on the header (1) and secures the weld seam (2). The weld pool safety device is already part of the header, thus the installation thereof is not necessary. In addition, the flow profile in the interior of the header is improved.

Description

Beschreibung description
Schweißbadsicherungweld pool
Die Erfindung betrifft ein Verfahren zur Verbindung von mindestens zwei metallischen Bauteilen mittels Schweißverbindung mit Schweißbadsicherung. Die Erfindung wird anhand des Beispieles einer Schweißverbindung zwischen einem Header und dem Wärmetauscherblock eines Plattenwärmetauschers aus Aluminium beschrieben, ist aber nicht auf dieses Beispiel eingeschränkt, sondern allgemein für die Schweißverbindung zweier metallischer Bauteile mit Schweißbadsicherung geeignet.The invention relates to a method for connecting at least two metallic components by means of welded connection with weld pool. The invention will be described with reference to the example of a welded connection between a header and the heat exchanger block of a plate heat exchanger made of aluminum, but is not limited to this example, but generally suitable for the welded joint of two metallic components with weld pool.
Plattenwärmetauscher aus Aluminium, wie sie in "The Standards of the BrazedPlate heat exchanger made of aluminum, as described in "The Standards of the Brazed
Aluminium Plate-Fin Heat Exchanger Manufacturers1 Association" ALPEMA Report (2000) beschrieben werden, bestehen im Wesentlichen aus einem Wärmetauscherblock mit alternierenden Passagen mit strukturierten Lamellen und Mitteln zur Zu- bzw. Abführung der am Wärmeaustausch beteiligten Medien (Header). Die am Wärmeaustausch beteiligten Medien werden entlang der alternierenden Passagen mit den strukturierten Lamellen geführt, wobei die einzelnen Passagen durch Trennbleche voneinander getrennt sind. Der Wärmeaustausch findet indirekt zwischen Medien in benachbarten Passagen statt. Derartige Wärmetauscher finden häufig Anwendung bei der Luftzerlegung, Erdgasverflüssigung oder in petrochemischen Anlagen in einem Temperaturbereich zwischen -2700C und +1200C.Aluminum Plate-Fin Heat Exchanger Manufacturers 1 Association "ALPEMA Report (2000) essentially consist of a heat exchanger block with alternating passages with structured lamellae and means for supplying or removing the heat exchanging media (headers) The heat exchange takes place indirectly between media in adjacent passages, such heat exchangers commonly used in air separation, natural gas liquefaction or in petrochemical plants all in one Temperature range between -270 0 C and +120 0 C.
Die als Header bezeichneten Mittel zur Zu- und Abführung der Medien bestehen aufgrund des breiten möglichen Temperaturbereiches ebenso wie der Wärmetauscherblock zumeist aus Aluminium oder einer hauptsächlich Aluminium enthaltenden Legierung. Die Header sind im Wesentlichen als zylindrischeDue to the wide possible temperature range and the heat exchanger block, the means for supplying and discharging the media, which are referred to as headers, are usually made of aluminum or of an alloy mainly containing aluminum. The headers are essentially cylindrical
Halbschalen ausgeführt, die mit dem Wärmetauscherblock typischerweise über eine Schweißverbindung verbunden werden.Half shells executed, which are typically connected to the heat exchanger block via a welded joint.
Um Materialien zu verschweißen, die hauptsächlich aus Aluminium bestehen, wird aufgrund der niedrigen Viskosität des Aluminiums eine Schweißbadsicherung benötigt. Das hierbei übliche Verfahren nach dem Stand der Technik wird am Beispiel der Schweißverbindung eines Headers und eines Wärmetauscherblockes in der Patentschrift US20020015857 beschrieben und in den Figuren 1 und 2 gezeigt. Am Header 1 wird vor der Verbindung mit dem Wärmetauscherblock 5 eine Schweißbadsicherung 3 montiert. Die Schweißbadsicherung 3 besteht nach dem Stand der Technik ebenfalls aus Aluminium oder aus Edelstahl und wird mit dem Header 1 verbunden, üblicherweise über eine Schweißverbindung 4. Der Header 1 muss aufgrund seiner Geometrie und Funktion über eine einseitige Schweißverbindung mit dem Wärmetauscherblock 5 verbunden werden. Die am Header 1 montierte Schweißbadsicherung 3 sorgt für die Ausbildung einer homogenen und stabilen Schweißnaht 2. Ohne die Schweißbadsicherung 3 würde die Schweißnaht 2 aufgrund der niedrigen Viskosität des Aluminiums zu stark auseinander laufen, so dass sich keine stabile Schweißverbindung bilden würde, insbesondere wäre eine korrekte Ausbildung der Schweißnahtwurzel nicht gegeben.In order to weld materials that are mainly aluminum, a weld pool fuse is needed due to the low viscosity of the aluminum. The conventional method according to the prior art is described using the example of the welded connection of a header and a heat exchanger block in the patent US20020015857 and shown in Figures 1 and 2. At the Header 1, a weld pool 3 is mounted before the connection with the heat exchanger block 5. The weld pool fuse 3 is also made of aluminum or stainless steel in the prior art and is connected to the header 1, usually via a welded joint 4. The header 1 must be connected to the heat exchanger block 5 due to its geometry and function via a one-sided weld. Without the weld pool 3, the weld 2 would run too far apart due to the low viscosity of the aluminum, so that would not form a stable weld, in particular would be a correct Training the weld root is not given.
Das beschriebene Verfahren nach dem Stand der Technik weist jedoch Nachteile auf. Zum einen erhöht die notwendige Montage der Schweißbadsicherung den Montageaufwand für den gesamten Wärmetauscher, der in der Regel zahlreiche Header aufweist, deutlich. Zum anderen muss die Schweißbadsicherung im Inneren des Headers, welches im Betrieb von gasförmigen und/oder flüssigen Medien durchströmt wird, angebracht werden. Somit stellt die Schweißbadsicherung ein Strömungshindernis und einen zusätzlichen Angriffspunkt für Verlegungen oder Korrosion dar.However, the described prior art method has disadvantages. On the one hand, the necessary assembly of the weld pool protection significantly increases the assembly costs for the entire heat exchanger, which as a rule has numerous headers. On the other hand, the weld pool fuse inside the header, which is flowed through in the operation of gaseous and / or liquid media, be attached. Thus, the weld pool is a flow obstacle and an additional point of application for transfers or corrosion.
Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zur Verbindung mindestens zweier metallischer Bauteile mittels Schweißverbindung mit Schweißbadsicherung derart auszugestalten, dass zusätzlicher Montageaufwand vermieden wird.The present invention is therefore based on the object, a method for connecting at least two metallic components by means of welded joint with weld pool in such a way that additional installation effort is avoided.
Die gestellte Aufgabe wird dadurch gelöst, dass die Schweißbadsicherung durch eine entsprechende Ausformung an mindestens einem der zu verbindenden Bauteile erfolgt. Der Grundgedanke der Erfindung besteht darin, mindestens eines der zu verbindenden Bauteile derart auszuformen, das die notwendige Schweißbadsicherung bereits ein Bestandteil des Bauteils ist. Die Schweißbadsicherung muss somit erfindungsgemäß nicht zusätzlich an den zu verbindenden Bauteilen montiert werden, sondern ist bereits ein Teil des zu verbindenden Bauteils. Der gesamte Montageaufwand wird daher deutlich minimiert. In einer bevorzugten Ausgestaltung der Erfindung wird die Ausformung in Form eines Profils, besonders bevorzugt durch ein Strangpressprofil oder ein Walzprofil gebildet. In dieser Ausgestaltung der Erfindung kann die Schweißbadsicherung durch einfache und im Stand der Technik etablierte Verfahren ausgeformt werden. Der zusätzliche Aufwand ist gering.The stated object is achieved in that the weld pool is effected by a corresponding shaping of at least one of the components to be connected. The basic idea of the invention is to form at least one of the components to be connected in such a way that the necessary weld pool protection is already a component of the component. The weld pool protection therefore does not have to be additionally mounted according to the invention on the components to be connected, but is already part of the component to be connected. The entire assembly effort is therefore significantly minimized. In a preferred embodiment of the invention, the molding is formed in the form of a profile, particularly preferably by an extruded profile or a rolled section. In this embodiment of the invention, the weld pool can be formed by simple and well-established in the art. The extra effort is low.
Das erfindüngsgemäße Verfahren eignet sich insbesondere zur Verbindung mindestens zweier Bauteile, die hauptsächlich aus Aluminium und/oder einer Aluminiumlegierung bestehen. Durch die niedrige Viskosität von Aluminium beim Schweißen ist eine Schweißbadsicherung bei der Schweißverbindung von hauptsächlich aus Aluminium bestehenden Materialien besonders wichtig.The erfindüngsgemäße method is particularly suitable for connecting at least two components, which consist mainly of aluminum and / or an aluminum alloy. Due to the low viscosity of aluminum during welding, a weld pool protection in the welded joint of materials consisting mainly of aluminum is particularly important.
Besonders bevorzugt wird das erfindungsgemäße Verfahren zur Verbindung von mindestens zwei Bauteilen eines Plattenwärmetauschers aus Aluminium und/oder einer Aluminiumlegierung, insbesondere zum Anschweißen eines Headers an den Wärmetauscherblock eines Plattenwärmetauschers, verwendet. Der Header muss einseitig an den Wärmetauscherblock geschweißt werden. Nach dem erfindungsgemäßen Verfahren wird die Schweißbadsicherung direkt am Header ausgeformt und ist somit direkter Bestandteil des Headers. Der Montageaufwand für die Schweißbadsicherung am Header entfällt somit komplett, wodurch die Fertigung eines Plattenwärmetauschers deutlich verkürzt wird. Zusätzlich ist die Schweißbadsicherung kein zusätzliches Bauteil im Strömungskanal des Headers sondern Bestandteil des Headers. Das Strömungsprofil der gasförmigen und/oder flüssigen Medien, die durch den Header in den Wärmetauscherblock geführt werden, verbessert sich deutlich. Die Schweißbadsicherung stellt kein Strömungshindernis mehr dar. Das Risiko für Verlegungen oder Korrosion wird somit deutlich mihimiert.The method according to the invention is particularly preferably used for connecting at least two components of a plate heat exchanger made of aluminum and / or an aluminum alloy, in particular for welding a header to the heat exchanger block of a plate heat exchanger. The header must be welded on one side to the heat exchanger block. According to the method of the invention, the weld pool is formed directly on the header and is thus a direct part of the header. The assembly work for the weld pool protection on the header is thus completely eliminated, whereby the production of a plate heat exchanger is significantly reduced. In addition, the weld pool is not an additional component in the flow channel of the header but part of the header. The flow profile of the gaseous and / or liquid media, which are passed through the header in the heat exchanger block, improves significantly. The weld pool protection no longer poses a flow obstacle. The risk of misplacement or corrosion is thus clearly mimicked.
Mit der vorliegenden Erfindung gelingt es insbesondere, den Montageaufwand bei der Verbindung mindestens zweier metallischer Bauteile mittels Schweißverbindung mit Schweißbadsicherung deutlich zu minimiert.With the present invention, it is possible, in particular, to significantly minimize the assembly effort when connecting at least two metallic components by means of welded connection with weld pool protection.
Im Folgenden soll die Erfindung anhand des in den Figuren dargestellten Vergleiches des Standes der Technik mit einem Ausführungsbeispiel der Erfindung näher erläutert werden. Es zeigenIn the following, the invention will be explained in more detail with reference to the comparison of the prior art shown in the figures with an embodiment of the invention. Show it
Figur 1 , 2 eine Darstellung einer Schweißverbindung mit Schweißbadsicherung nach dem Stand der Technik und Figur 3 ein Ausführungsbeispiel der Erfindung.Figure 1, 2 is an illustration of a welded joint with Schweißbadsicherung according to the prior art and Figure 3 shows an embodiment of the invention.
Die Figuren 1 und 2 zeigen eine Schweißverbindung zwischen dem Header 1 und dem Wärmetauscherblock 5 eines Plattenwärmetauschers nach dem Stand der Technik. Die Schweißbadsicherung 3 zur Sicherung der Schweißnaht 2 wurde vor dem Schweißvorgang im Inneren des Headers 1 montiert und am Header 1 beispielsweise über eine Schweißverbindung 4 befestigt. Das Verfahren wurde bereits ausführlicher im allgemeinen Teil der Beschreibung dargestellt.Figures 1 and 2 show a welded connection between the header 1 and the heat exchanger block 5 of a plate heat exchanger according to the prior art. The weld pool 3 to secure the weld 2 was mounted before the welding process inside the header 1 and attached to the header 1, for example via a welded joint 4. The method has already been described in more detail in the general part of the description.
Figur 3 zeigt eine Ausgestaltung des erfindungsgemäßen Verfahrens am Beispiel der Verbindung eines Headers 1 am Wärmetauscherblock 5 eines Plattenwärmetauschers aus Aluminium. Die Schweißbadsicherung 3a ist erfindungsgemäß am Header 1 ausgeformt und sichert die Schweißnaht 2. Die Schweißbadsicherung ist bereits Teil des Headers, ihre Montage entfällt. Zusätzlich wird das Strömungsprofil im Inneren des Headers verbessert. FIG. 3 shows an embodiment of the method according to the invention using the example of the connection of a header 1 to the heat exchanger block 5 of a plate heat exchanger made of aluminum. The weld pool 3a is inventively formed on the header 1 and secures the weld 2. The weld pool is already part of the header, their installation is omitted. In addition, the flow profile inside the header is improved.

Claims

Patentansprüche claims
1. Verfahren zur Verbindung von mindestens zwei metallischen Bauteilen (1 , 5) mittels Schweißverbindung (2) mit Schweißbadsicherung (3a), dadurch gekennzeichnet, dass die Schweißbadsicherung (3a) durch eine entsprechende Ausformung an mindestens einem der zu verbindenden Bauteile (1 , 5) erfolgt.1. A method for connecting at least two metallic components (1, 5) by means of welded joint (2) with weld pool (3a), characterized in that the weld pool (3a) by a corresponding formation on at least one of the components to be connected (1, 5 ) he follows.
2. Verfahren nach Anspruch 1 , dadurch gekennzeichnet, dass die Ausformung in . Form eines Profils gebildet wird.2. The method according to claim 1, characterized in that the formation in. Form of a profile is formed.
3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Ausformung durch Strangpressprofile oder Walzprofile gebildet wird.3. The method according to claim 1 or 2, characterized in that the formation is formed by extruded profiles or rolled sections.
4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass Bauteile (1 , 5) verbunden werden, die hauptsächlich aus Aluminium und/oder einer Aluminiumlegierung bestehen.4. The method according to any one of claims 1 to 3, characterized in that components (1, 5) are connected, which consist mainly of aluminum and / or an aluminum alloy.
5. Verwendung eines Verfahrens nach einem der Ansprüche 1 bis 4 zur Verbindung von mindestens zwei Bauteilen eines Plattenwärmetauschers aus Aluminium und/oder einer Aluminiumlegierung.5. Use of a method according to one of claims 1 to 4 for connecting at least two components of a plate heat exchanger made of aluminum and / or an aluminum alloy.
6. Verwendung eines Verfahrens nach einem der Ansprüche 1 bis 4 zum Anschweißen eines Headers (1) an den Wärmetauscherblock (5) eines Plattenwärmetauschers. 6. Use of a method according to one of claims 1 to 4 for welding a header (1) to the heat exchanger block (5) of a plate heat exchanger.
PCT/EP2009/001593 2008-03-19 2009-03-06 Weld pool safety device WO2009115198A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008014978.0 2008-03-19
DE102008014978A DE102008014978A1 (en) 2008-03-19 2008-03-19 weld pool

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US9290188B2 (en) 2010-09-20 2016-03-22 Bombardier Transportation Gmbh Carriage body for a railroad vehicle with a coupling fixing device and method for producing said carriage body
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US9290188B2 (en) 2010-09-20 2016-03-22 Bombardier Transportation Gmbh Carriage body for a railroad vehicle with a coupling fixing device and method for producing said carriage body
CN104884888A (en) * 2012-12-26 2015-09-02 住友精密工业株式会社 Heat exchanger
CN104884888B (en) * 2012-12-26 2017-02-22 住友精密工业株式会社 Heat exchanger
WO2016138987A1 (en) * 2015-03-02 2016-09-09 Linde Aktiengesellschaft Method for producing a plate heat exchanger

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