DE437199C - Process for the production of wrought iron finned tubes - Google Patents

Process for the production of wrought iron finned tubes

Info

Publication number
DE437199C
DE437199C DED49409D DED0049409D DE437199C DE 437199 C DE437199 C DE 437199C DE D49409 D DED49409 D DE D49409D DE D0049409 D DED0049409 D DE D0049409D DE 437199 C DE437199 C DE 437199C
Authority
DE
Germany
Prior art keywords
wrought iron
production
finned tubes
ribs
core 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
DED49409D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DED49409D priority Critical patent/DE437199C/en
Application granted granted Critical
Publication of DE437199C publication Critical patent/DE437199C/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21CMANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/06Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of tubes or metal hoses; Combined procedures for making tubes, e.g. for making multi-wall tubes
    • B21C37/15Making tubes of special shape; Making tube fittings
    • B21C37/22Making finned or ribbed tubes by fixing strip or like material to tubes
    • B21C37/24Making finned or ribbed tubes by fixing strip or like material to tubes annularly-ribbed tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Description

Verfahren zur Herstellung schmiedeeiserner Rippenrohre. Die Rippen schmiedeeiserner Rippenrohre werden, soweit nicht das Kernrohr mit den Rippen im geschmolzenen Metallbade verlötet wird, zum Zwecke inniger Berührung und guten Wärmeüberganges von Rohr auf Rippe durch die verschiedenartigsten Verfahren mechanisch auf das Kernrohr aufgepreßt. Da hierbei zwei harte Metalle miteinander zur Auflage kommen, erstreckt sich die gewünschte innige Berührung nur auf sehr kleine Flächen, die dem Wärmeübergang einen merklichen Widerstand entgegensetzen. Ferner sind die Berührungsstellen zwischen Rippen und Kernrohr erfahrungsgemäß dem Rosten ausgesetzt, wodurch der Wärmeübergang mit der Zeit weiter verschlechtert wird.Process for the manufacture of wrought iron finned tubes. Ribs wrought iron finned tubes, unless the core tube with the ribs in the molten metal bath is soldered for the purpose of intimate contact and good heat transfer from tube to rib mechanically onto the core tube using a wide variety of processes pressed on. Since here two hard metals come to rest with each other, extends the desired intimate contact is only achieved on very small areas that allow heat transfer to oppose a noticeable resistance. Furthermore, the points of contact are between Experience has shown that ribs and core tube are exposed to rusting, which means that the heat transfer occurs worsens over time.

Die vorliegende Erfindung behebt diese Übelstände dädurch, daß das Kernrohr vor dem Aufbringen der Berippung einen weichen Metallüberzug erhält, in den sich die Rippen beim Vorgange des Rufpressens (beispielsweise Umpressen der Rippen auf das Kernrohr, Aufdornen des Kernrohres, Aufwickeln bandförmiger Berippung) hineindrücken. Hierbei schmiegt sich der weiche Metallüberzug der Berippung vollständig an, und es entsteht eine wesentlich größere Berührungsfläche mit entsprechend verbessertem Wärmeübergang. Durch die Gleichmäßigkeit der Anlage wird außerdem das Eindringen von Feuchtigkeit verhindert, die Rostgefahr an den Berührungsflächen beseitigt und dadurch die wirksame Lebensdauer erhöht.The present invention overcomes these drawbacks in that the Core tube is given a soft metal coating before the ribs are applied, in which the ribs are in the process of the call pressing (for example pressing the Ribs on the core tube, expanding the core tube, winding ribbon-shaped ribbing) push in. Here, the soft metal coating of the ribs nestles completely on, and there is a much larger contact area with a correspondingly improved Heat transfer. The uniformity of the plant also increases the penetration prevents moisture, eliminates the risk of rust on the contact surfaces and this increases the effective service life.

Claims (1)

PATE` T Ah SPRUCH Verfahren zur Herstellung schmiedeeiserner Rippenrohre, bestehend aus schmiedeeisernem Kernrohr und aufgepreßter Berippung, dadurch gekennzeichnet, daß die Oberfläche des Kernrohres vor dem Rufpressen der Berippung mit einem weichen Metallüberzug versehen wird.PATE` T Ah SPRUCH Process for the production of wrought iron finned tubes, consisting of wrought iron core tube and pressed-on ribs, characterized in that the surface of the core tube is provided with a soft metal coating before the ribs are pressed on.
DED49409D 1925-12-16 1925-12-16 Process for the production of wrought iron finned tubes Expired DE437199C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED49409D DE437199C (en) 1925-12-16 1925-12-16 Process for the production of wrought iron finned tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED49409D DE437199C (en) 1925-12-16 1925-12-16 Process for the production of wrought iron finned tubes

Publications (1)

Publication Number Publication Date
DE437199C true DE437199C (en) 1926-11-15

Family

ID=7051876

Family Applications (1)

Application Number Title Priority Date Filing Date
DED49409D Expired DE437199C (en) 1925-12-16 1925-12-16 Process for the production of wrought iron finned tubes

Country Status (1)

Country Link
DE (1) DE437199C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE927562C (en) * 1952-03-22 1955-05-12 Basf Ag Metallic hollow bodies, in particular pipes or cylindrical vessels, which have structural elements welded on the outside, such as ribs, mandrels or cooling or heating pipes or the like
DE1075533B (en) * 1960-02-18 GEA - Luftkühler Gesellschaft m.b.H., Bochum Method of joining annular or helical fins on heat exchanger tubes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1075533B (en) * 1960-02-18 GEA - Luftkühler Gesellschaft m.b.H., Bochum Method of joining annular or helical fins on heat exchanger tubes
DE927562C (en) * 1952-03-22 1955-05-12 Basf Ag Metallic hollow bodies, in particular pipes or cylindrical vessels, which have structural elements welded on the outside, such as ribs, mandrels or cooling or heating pipes or the like

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