Development of Enameling Steel Sheet Used for Heat-Exchanger

Abstract:

The chemical composition and production process of a new kind of enameling steel sheet used for heat-exchanger were introduced. The microstructure, mechanical property and hydrogen permeation resistance of the steel sheet were studied. The enameling adherence and pin-hole ratio of the enameled steel sheet were measured. The results show that the microstructure is ferrite with the grain size of grade 11 and quantities of linear MnS inclusions, grainy manganese-niobium composite oxides and small NbC precipitates are formed in the steel. The average value of hydrogen permeation resistance of the steel is 33 min·mm^-2, the enameling adherence is evaluated as level A1and the number of the pin-hole defects in the enameled steel is less than 10 per square meter. Both mechanical property and enameling quality of the steel sheet meet the technical demand of heat-exchanger.

• Periodical: Applied Mechanics and Materials (Volumes 633-634)
• Pages: 164-167
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.633-634.164
• Online since: September 2014
• Authors: Yi Feng Song*, Yuan Qiang Tu, Hong Wu Yang, Rong Du, Hui Ping Bai, Ze Hong Lei
• Keywords: Adherence, Enamelling Steel, Fish Scaling, Hydrogen Permeation Resistance

References

[1] Guangyang Liu. Glass and Enamel Vol. 41(2013), p.34.

[2] Guixian Shao, Wenbin Gou. Enamel (Light Industry Publications, Beijing, 1983).

[3] Wenqing Liu. Chinese Enamel Vol. 11(1990), p.7.

[4] T Okuyamas, A Nishimoto, T Kurokawa. The Vitreous Enameller Vol. 41 (1990), p.49.

[5] G Papp, D Geyer, G Giedenbacher. The Vitreous Enameller Vol. 41 (1990), p.71.

[6] M Hua, C I Garcia, K Eloot, etc. ISIJ International Vol. 37 (1997), p.1129.

[7] Fenglian Liu, Guiyan Li, Zhiwei Liu etc. Shanghai Metals Vol. 35 (2013), p.36.