DE3324922C2 - Heat exchanger block with a large number of spaced profile tubes - Google Patents

Heat exchanger block with a large number of spaced profile tubes

Info

Publication number
DE3324922C2
DE3324922C2 DE19833324922 DE3324922A DE3324922C2 DE 3324922 C2 DE3324922 C2 DE 3324922C2 DE 19833324922 DE19833324922 DE 19833324922 DE 3324922 A DE3324922 A DE 3324922A DE 3324922 C2 DE3324922 C2 DE 3324922C2
Authority
DE
Germany
Prior art keywords
tubes
heat exchanger
spacer
collars
tube
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.)
Expired
Application number
DE19833324922
Other languages
German (de)
Other versions
DE3324922A1 (en
Inventor
Georg 8031 Gröbenzell Breitmoser
Wilhelm 8901 Aystetten Vogel
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.)
MTU Aero Engines GmbH
Original Assignee
MTU Motoren und Turbinen Union Muenchen GmbH
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 MTU Motoren und Turbinen Union Muenchen GmbH filed Critical MTU Motoren und Turbinen Union Muenchen GmbH
Priority to DE19833324922 priority Critical patent/DE3324922C2/en
Publication of DE3324922A1 publication Critical patent/DE3324922A1/en
Application granted granted Critical
Publication of DE3324922C2 publication Critical patent/DE3324922C2/en
Expired legal-status Critical Current

Links

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
    • 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
    • F28F21/089—Coatings, claddings or bonding layers made from metals or metal alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
    • B22F7/064—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts using an intermediate powder layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • 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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/16—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating with interposition of special material to facilitate connection of the parts, e.g. material for absorbing or producing gas
    • 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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/24—Preliminary treatment
    • 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
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/06—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits having a single U-bend
    • 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
    • F28F9/007—Auxiliary supports for elements
    • F28F9/013—Auxiliary supports for elements for tubes or tube-assemblies
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2255/00—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes
    • F28F2255/18—Heat exchanger elements made of materials having special features or resulting from particular manufacturing processes sintered

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

Bei einer Anordnung von zumindest zwei diskreten voneinander beabstandeten Bauteilen in Paketform sind die einzelnen Bauteile mit einem Metall- oder Keramikpulverkragen auf zumindest einem Umfang der Bauteile beschichtet. Die Pulverkragen dienen als Abstandshalter zum benachbarten Bauteil, sind bevorzugt aufgespritzt und verhindern zuverlässig Reibkorrosion zwischen den Bauteilen.In the case of an arrangement of at least two discrete components spaced apart from one another in package form, the individual components are coated with a metal or ceramic powder collar on at least one circumference of the components. The powder collars serve as spacers to the neighboring component, are preferably sprayed on and reliably prevent fretting corrosion between the components.

Description

0,4 ± 0,05 mm. Die identisch ausgebildeten einzelnen Profilröhrchen besitzen Abstandhalterkragen 2 in gleicher L·ge bzw. Höhe. In der Gesamtanordnung eines Wärmetauscherblocks stoßen benachbarte Pulverkragen 2 aneinander, so daß die Fiofuröhrchen selbst auf Abstand gehalten und positioniert sind. Ersichtlich können sich mithin die einzelnen Profilröhrchen nicht metallisch berühren, Reibkorrpsion zwischen den Profilröhrchen ist verhindert ...0.4 ± 0.05 mm. The identically trained individual Profile tubes have spacer collars 2 in the same length or height. In the overall arrangement of a Heat exchanger blocks abut adjacent powder collars 2 against one another, so that the Fiofu tubes themselves Are kept at a distance and positioned. It is therefore evident that the individual profile tubes cannot be metallic touch, friction corrosion between the profile tubes is prevented ...

Ein mit Bauteilen 1 der Fi g. 1 bestückter Wärmetauscherblock kann umfangsmäßig von einem äußeren Halterahmen 3 umschlossen sein, wie er in F i g. 2 veranschaulicht ist Der Halterahmen ist zwecks einfacher Montage zweigeteilt und an seinem Innenumfang mit einer Metall- oder Keramikschicht 4 nach Art dibr Pulverkragen 2 der Profilröhrchen 1 beschichtet Auf diese Weise ist das aus dem Profilröhrchen gebildete.-Päket umfangsmäßig in einer Weise abgestützt, daß aufgrund der Metall- oder Keramikschicht 4 ebenfalls metallene Reibung und mithin Reibkorrosion entfälltA with components 1 of Fi g. 1 assembled heat exchanger block can be circumferentially enclosed by an outer holding frame 3, as shown in FIG. 2 illustrates The holding frame is divided into two parts for the purpose of easy assembly and with its inner circumference a metal or ceramic layer 4 in the manner of a powder collar 2 of the profile tube 1 coated In this way, the package formed from the profile tube circumferentially supported in such a way that due to the metal or ceramic layer 4 also metallic There is no friction and therefore fretting corrosion

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

2525th

3C3C

3535

4040

5050

Claims (3)

- : ι ■■· ' ■ . \ ;■■■-. 2 ■■ von Brems- oder Kupplungsbelägen durch Spritzbe- Patentansprüche: schichtung mit Metallpulver aus der DE-AS 12 33 547 bekannt; ein Hinweis auf die Lösung der hier behandel--: ι ■■ · '■. \; ■■■ -. 2 ■■ of brake or clutch linings by spray coating Patent claims: coating with metal powder known from DE-AS 12 33 547; a reference to the solution of the 1. Wännetauscherblock mit einer Vielzahl von zu- ten Aufgabe, nämlich der Abstandhalterung von Profileinander parallel ausgerichteten, voneinander beab- 5 röhreben eines Wärmetauschers, ist diesen Druckschrifstandeten Profiiröhrchen, dadurch gekenn- ten jedoch nicht zu entnehmen.1. Heat exchanger block with a large number of tasks, namely keeping the profiles apart parallel aligned, spaced apart tubes of a heat exchanger, is this printed matter Professional tubes, which are identified by them but cannot be removed. zeichnet, daß die Profiiröhrchen (1) jeweils auf Der herausragende Vorteil eines erfindühgs^emäß wenigstens einem kürzen Längenabschnitt ihrer ausgebildeten Wärmetauscherblocks besteht darin, daß Oberfläche durch Beschichtung mit einer Metall- für die Abstandhalterung keine eigenen Bauteile erfor- oder Keramikpulverspritzschicht einen Abstandhai- io derlich sind, die der Profilierung der einzelnen Röhrterkragen (2) ausbilden, wobei die Abstandhalter- chcn angepaßt werden müssen. Dadurch kann in erhebkragen (2) so positioniert sind, daß sie sich jeweils lichem Maß Herstellungsaufwand eingespart werden, mit den Kragen benachbarter Röhrchen berühren. Besonders fällt dieser Vorteil dann ins Gewicht, wenndraws that the Profiiröhrchen (1) each on The outstanding advantage of a erfindühgs ^ emäß at least a short length of their formed heat exchanger block is that Coating with a metal surface means that no separate components are required for the spacer or ceramic powder spray coating are a spacer that is responsible for the profiling of the individual tubular collars (2) train, whereby the spacers must be adapted. This allows in uplifting collars (2) are positioned in such a way that they save a certain amount of manufacturing effort, touch the collars of adjacent tubes. This advantage is particularly important when 2. Wärmetauscherblock nach Anspruch U dadurch Wärmetauscherblöcke mit Röhrchen versehen sind, die gekennzeichnet, daß die Profiiröhrchen (1) und die 15 einen von der üblichen Kreisform abweichenden Quer-Abstandhalterkragen (2) aus dem gleichen Material schnitt aufweisen. Auch dann, wenn die Profiiröhrchen gebildet sind. sehr dicht gepackt sind. d.h. die gegenseitigen Abstände2. Heat exchanger block according to claim U, characterized in that heat exchanger blocks are provided with tubes which characterized in that the profile tubes (1) and the 15 have a transverse spacer collar deviating from the usual circular shape (2) cut from the same material. Even if the professional tubes are formed. are very tightly packed. i.e. the mutual distances 3. Anordnung nach Anspruch 1 oder 2, dadurch auf schmale Spalte verringert sind, wirkt sich die erfingekennzeicksit daß zueinander ausgerichtete Pro- dungsgemäße Bauweise ganz besonders vorteilhaft aus. Hlröhrchen(l)U-förmigeLanzettenröhrchensind. 20 Die aufgetragenen Abstandhalterkragen können dabei3. Arrangement according to claim 1 or 2, thereby reduced to narrow gaps, the erfingekennzeicksit affects that the construction according to the invention which is aligned with one another is particularly advantageous. Cone tubes (l) are U-shaped lancet tubes. 20 The applied spacer collars can thereby sehr dünn sein und dennoch ,sicher eine gegenseitigebe very thin and yet, surely a mutual ' Berührung der einzelnen Profilröhrchen verhindern. Bei'' Prevent contact with the individual profile tubes. at Relativbewegung der Röhrchen gegeneinander, wie sie z. B. dann auftritt, wenn der Wärmetauscher auf einemRelative movement of the tubes against one another, as it is, for. B. occurs when the heat exchanger on a Die Erfindung bezieht sich auf ehien Wärmetauscher- 25 Fahrzeug mitgeführt *yird, ist durch die Äbstandhalterblock mit einer Vielzahl von zueinander parallel ausge- kragen jegliche Reibkorrosion der Röhrchenwände ausrichteten, voneinander beabstandcten Profiiröhrchen. geschlossen.The invention relates to a heat exchanger vehicle that is carried through the spacer block with a large number of protruding parallel to each other aligned any fretting corrosion of the tube walls, spaced apart professional tubes. closed. Ein solcher Wännetauscherblock, bei dem die Profil- Eine vorteilhafte Ausbildung der Erfindung bestehtSuch a heat exchanger block, in which the profile is an advantageous embodiment of the invention röhrchen einen U-förmigen Verlauf aufweisen, ist z. B. darin, daß die Profiiröhrchen und die Abstandhalterkraaus der DE-OS 29 07 810 bekannt Wärmetauscher mit 30 gen aus dem gleichen Material gebildet sind, da hiereinem oder mehreren Wärtnetausa'jerblöcken der vor- durch auch im Betrieb unter sehr hohen Temperaturen bezeichneten Bauart (sogeoannte RShrenwärmetau- unerwünschte Spannungen durch unterschiedliche Wärscher) erfordern zur Einhaltung de; gewünschten Ab- medehnung von Abstandhalterkragen und Röhrchen stände zwischen den einzelnen Profilröhren Abstand- ausgeschlossen sindtubes have a U-shaped course, is z. B. is that the Profiiröhrchen and the spacer kraaus DE-OS 29 07 810 known heat exchangers with 30 gene are formed from the same material, as here or several Wärtnetausa'jer blocks of the advance even in operation at very high temperatures designated design (so-called RShrenwärmetau- unwanted stresses due to different heaters) require to comply with de; Desired expansion of spacer collar and tube distances between the individual profile tubes are excluded halter. Im Stand der Technik ist eine Vielzahl verschie- 35 Bei einer bevorzugten Ausführungsform der ErFmdenartigster Abstandhalter in Form von Zwischenbö- dung sind die zueinander ausgerichteten Profiiröhrchen den oder Zwischenblechen vorgeschlagen worden, die U-förmige Lanzettenröhrchen. Bei solchen besonders wegen der Notwendigkeit der Anpassung ihrer Durch- zu Schwingungen neigenden U-Röhvchen ist die erfinbrechungen an die Außenkontur der Wärmetauscher- dungsgemäße Abstandhalterung insofern von besonderöhren beträchtlichen baulichen Aufwand bedeuten. Be- 40 rem Vorteil, als Abstandhalter ohne Rücksicht auf sonsonders dann, wenn Abstandhalter für Röhrchenwärme- stige konstruktive Einschränkungen gerade so positiotauscher vorzusehen sind, deren Röhren im Vergleich zu niert werden können, daß die Eigenfrequenz der U-ihrem Querschnitt sehr lang sind, wird der Herstellungs- Röhrchen in einen Bereich verschoben werden kann, aufwand besonders groß, da lange dünne Röhrchen in der von auftretenden Betriebsfrequenzen ausreichend erhöhtem Maß zu unerwünschten Schwingungen nei- 45 Abstand hatholder. In the prior art, there are a large number of different types. In a preferred embodiment, the most inventive Spacers in the form of intermediate floors are the small profile tubes that are aligned with one another the or intermediate sheets have been proposed, the U-shaped lancet tubes. Especially with such Because of the need to adapt their U-tubes, which tend to vibrate, this is a breakthrough to the outer contour of the heat exchanger- the spacer according to the invention in this respect of special tubes mean considerable structural effort. A great advantage as a spacer without regard to any special when spacers for tube heaters have constructive restrictions that are just as positive as exchangers are to be provided whose tubes can be compared to that the natural frequency of the U-their Cross-section are very long, the manufacturing tube can be moved into an area The effort is particularly great, as long, thin tubes are sufficient for the operating frequencies that occur 45 has increased distance from undesired vibrations gen und eine gegenseitige Berührung der Röhrchen zur Die Erfindung wird nachfolgend anhand eines Aus-gene and a mutual contact of the tubes for The invention is based on an embodiment Vermeidung von Reibkorrosion durch entsprechende führungsbeispiels unier Bezugnahme auf die Zeichnung mehrfache Abstandhalterung über ihre Länge unter- näher erläutert; es zeigtAvoid fretting corrosion by means of a corresponding example with reference to the drawing multiple spacers over their length explained in more detail below; it shows bunden werden muß. Besonders schwierig wird die Ab- F i g. 1 ein Wärmetauscherröhrehen für einen Wär-must be bound. The fig. 1 a heat exchanger tube for a heat standhalterung dann, wenn es sich etwa um U-förmig 50 metauscher, wie er bei Fahrzeugmotoren Verwendung gebogene und einseitig befestigte Profiiröhrchen han- findet, in Seitenansicht, schematisch,
delt F i g. 2 einen äußeren zweigeteilten Halterahmen fürResistance if it is about a U-shaped 50 exchanger, as it is used in vehicle engines with curved professional tubes attached on one side, in side view, schematic,
delt F i g. 2 an outer two-part holding frame for Aufgabe der Erfindung ist es deshalb, einen Wärme- ein Paket von Wärmetauscherröhrchen in einer pertauscherblock der eingangs genannten Gattung zu spektivischen AnsichtThe object of the invention is therefore to provide a heat exchanger package of heat exchanger tubes in a heat exchanger block of the genus mentioned at the beginning to the perspective view schaffen, bei dem mit herstellungstechnisch einfachen 55 Ein in der Zeichnung im ganzen nicht dargestellter Mitteln eine genaue Positionierung und sichere Ab- Wärmetauscherblock umfaßt eine Vielzahl von U-förstandhalterung der einzelnen Profiiröhrchen unterein- migen Profiiröhrchen 1, deren freie Schenkelenden in ander, wie auch zu Außenwänden, erzielt wird. einer Weise an einer Halterung befestigt sind, daß diecreate, with the technically simple 55 A in the drawing not shown as a whole Means precise positioning and safe removal. The heat exchanger block comprises a large number of U-shaped stands of the individual Profi-tubes, among them, Profi-tubes 1, the free leg ends of which in other, as well as to external walls, is achieved. a way are attached to a bracket that the Erfindungsgemäß wird diese Aufgabe dadurch gelöst, einzelnen Röhrchen zueinander ausgerichtet sind und daß die Profiiröhrchen jeweils auf wenigstens einem 60 mit Abstand voneinander verlaufen,
kurzen Längenabschnitt ihrer Oberfläche durch Be- Um den Abstand zwischen den ein/einen RöhrchenAccording to the invention, this object is achieved in that individual tubes are aligned with one another and that the profile tubes each run on at least one 60 at a distance from one another,
short length of its surface by loading To the distance between the one / a tube schichtung mit einer Metall- oder Keramikpulverspritz- sicherzustellen, sind an jedem Profiiröhrchen I Metallschicht einen Abstandhalterkragen ausbilden, wobei die oder Keramikpulverkragen 2 im Bereich der Schenkel Abstandhalterkragen so positioniert sind, daß sie sich vorgesehen. Im Ausführungsbeispiel nach F i g. 1 sind an jeweils mit den Kragen benachbarter Röhrchen beruh- es jedem Schenkel zwei Abstandhalterkragen 2 mit Abren. stand voneinander angebracht. Die Kragen sind in ge-Layering with a metal or ceramic powder spray must be ensured on every professional tube I metal layer form a spacer collar, the or ceramic powder collar 2 in the area of the legs Spacer collars are positioned so that they are provided. In the embodiment according to FIG. 1 are on with the collars of adjacent tubes, each leg has two spacer collars 2 with tears. stood attached to each other. The collars are in Zwar ist die Technik des Spritzbeschichtens von Me- eigneter Weise auf den äußeren Umfang der Röhrchen tallrohren aus der DE-PS 810 223 und die Herstellung aufgespritzt, und zwar in einer Dicke vonIt is true that the technique of spray coating is suitable on the outer periphery of the tubes tallrohren from DE-PS 810 223 and the production sprayed on, in a thickness of
DE19833324922 1982-08-14 1983-07-09 Heat exchanger block with a large number of spaced profile tubes Expired DE3324922C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833324922 DE3324922C2 (en) 1982-08-14 1983-07-09 Heat exchanger block with a large number of spaced profile tubes

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3230377 1982-08-14
DE19833324922 DE3324922C2 (en) 1982-08-14 1983-07-09 Heat exchanger block with a large number of spaced profile tubes

Publications (2)

Publication Number Publication Date
DE3324922A1 DE3324922A1 (en) 1984-02-16
DE3324922C2 true DE3324922C2 (en) 1985-04-25

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4754118A (en) * 1985-05-16 1988-06-28 Mitsubishi Jukogyo Kabushiki Kaisha Method for fabricating a structural assembly having narrow gaps
DE3722329C1 (en) * 1987-07-07 1988-11-24 Mtu Muenchen Gmbh Device and method for powder metallurgical production of a header section of a heat exchanger block

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE810223C (en) * 1949-04-14 1951-08-06 Deutsche Edelstahlwerke Ag Process for the production of metallic moldings
DE1233547B (en) * 1963-07-02 1967-02-02 Jurid Werke Gmbh Method for producing a metal coating on a carrier by sintering a layer of loose metal powder mixture

Also Published As

Publication number Publication date
DE3324922A1 (en) 1984-02-16

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