Paper Title:
Impact of Free Fluor Fluxes on Nozzle Wear Mechanisms
  Abstract

Fluoride emissions during continuous casting operations could cause health problems and equipment corrosion. For these reasons, nowadays free fluor mould fluxes are developed, using other oxides in order to substitute fluoride compounds. Although physical properties of the flux must be garantizied to prevent operation problems and product defects, it is relevant to analyse the effect of the new fluxes on the nozzle wear mechanisms. In this paper, the influence of B2O3 and Li2O on the wear of the nozzle materials is determined. A post mortem study on a nozzle used for steel billet casting that it was in contact with fluorides fluxes were carried out to identify the real wear mechanisms acting during operation. To determine and compare the effect of B2O3 and Li2O on the wear, static corrosion tests were developed on the same type of nozzle material. A similar corrosion mechanisms were identified in both cases: refractory melt infiltration and grain dissolution, but less penetration depth was observed for the flux containing B2O3 and Li2O. The results were correlated with some physical properties of the fluxes such as viscosity and surface tension.

  Info
Periodical
Edited by
Pietro VINCENZINI and James P. BENNETT
Pages
205-210
DOI
10.4028/www.scientific.net/AST.70.205
Citation
E. Brandaleze, E. Benavidez, V. Peirani, L. Santini, C. Gorosurreta, "Impact of Free Fluor Fluxes on Nozzle Wear Mechanisms", Advances in Science and Technology, Vol. 70, pp. 205-210, 2010
Online since
October 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Wen Jiang Ding, Guo Hua Wu, Bong Sun You, Dong Yim Chang
Abstract:The effects of CeCl3-containing fluxes on RE element loss, the high temperature mechanical properties, microstructure and corrosion...
563
Authors: Kuang Hung Tseng, Wei Chuan Wang
Welding & Joining
Abstract:An activated flux assisted tungsten inert gas (TIG) welding of type 316L stainless steel was investigated. SiO2-TiO2...
949
Authors: Yan Qing Lu, Guo Dong Zhang, Mao Fa Jiang
Chapter 10: Environmental and Green Materials
Abstract:In order to reduce fluorine pollution, partial fluoride could be replaced by Li2O in mould flux. The effects of Li2O on...
1549
Authors: Chen Liu, Zhi Liu Hu, Jian Min Zeng
Abstract:A new method for removal of impurities in pure molten aluminum has been presented in this paper. The basic principle of this method is that...
152
Authors: Yao Yong Yi, Guan Hui Liu, Yu Peng Zhang, Zi Yi Luo, Lei Xu
Symposium S: Materials for Mechanical Engineering and Processing Technology
Abstract:A-TIG welding is a new variant of high-efficiency TIG weld technology, the weld penetration can be improved by using surface activating...
337