Replacement of Imported Drawn Tubes Built in Heat Exchangers by Longitudinal Seam Pipes Produced by DUNAFERR

Éva Dénes; Piroska Fülöp; Judit Gergely; Ferenc Menyhárt; Sándor Tóth; Gábor Buza; Balázs Verő

doi:10.4028/www.scientific.net/MSF.537-538.337

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HomeMaterials Science ForumMaterials Science Forum Vols. 537-538Replacement of Imported Drawn Tubes Built in Heat...

Replacement of Imported Drawn Tubes Built in Heat Exchangers by Longitudinal Seam Pipes Produced by DUNAFERR

Abstract:

Diverse technologies in domestic enamelling production for machining, cutting and joining process are applied. The experiments presented in this paper focused on the opportunities of replacement of the drawn tubes built in heat exchangers longitudinal seam pipes produced by DUNAFERR Co. Ltd. The steel grade which satisfies the requirement of two-side enamelling, formability and after-fire sag resistance has been investigated. It has been shown that the coldrolled DC 04 EK-B steel grades stand all demands needed and therefore are able to replace the imported drawn tubes presently used.

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Periodical:

Materials Science Forum (Volumes 537-538)

Pages:

337-344

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.537-538.337

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Online since:

February 2007

Authors:

Éva Dénes, Piroska Fülöp, Judit Gergely, Ferenc Menyhárt, Sándor Tóth, Gábor Buza, Balázs Verő

Keywords:

Enamelling Steel Sheet, HR-Resistance Welding, Laser Welding, Longitudinal Seam Pipe

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References

[1] Test reports on investigation of DC 04 EK-B quality steels for enamelling, Project documents, 2003 Dunaújváros.

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[2] Buza G., Fábián R., Kálazi Z., Sebestyén T., Somogyi R.: Lézeres mélyvarratos hegesztés hıhatásövezete. Bányászati Kohászati Lapok, OMBKE. No. 6-7, (2001).

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[3] Hegesztési Zsebkönyv, COKOM Kft. Miskolc, (2003).

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