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Tata Steel UK Port Talbot has embarked on a programme to improve the RH and RD degasser snorkel life through material selection, design optimisation and process control. The critical wear around the tuyeres (argon flow) has been investigated using thermal mechanical FEM modelling to assess the effect of snorkel construction, preheat temperature and refractory material selection on wear rate and wear mechanisms. The increased rigidity and thermal expansion of the fired magnesia chrome bricks can lead to thermal cracking. The formation of micro-cracks in the early stage of the campaign would weaken the lining structure and accelerate the degree of hot erosion. |
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zhushiyue: ½ð±Ò+5, ·ÒëEPI+1, ¡ï¡ï¡ïºÜÓаïÖú 2014-09-21 20:37:41
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