Bimetallic tube formed by alumina refinery to process ovens and method for production and use

摘要

1 / 1 Summary "bimetallic tube formed by alumina refinery to process ovens and method for production and use is equipped with a bimetallic tube to transport stocks of raw material of oil refinery process ovens and, more particularly, in radiant coils Es of the oven, including: (I) a layer of the outer tube being formed of stainless steel.Including chromium in the range of 15.0 to 26.0% by weight based on the total weight of stainless steel, (II) a layer of the internal tube being formed of an alloy in mass forming alumina, including 5.0 to 10.0% by weight of Al, 20.0% by weight of 25% by weight of Cr, less than 0.4 wt.% of Si, and the M ENOS 35.0% by weight of Fe, with the rest being Ni.In the layer of the internal tube is formed by plasma powder welding alloy in mass of alumina forming on the inner surface of the outer tube layer, and (III) an oxide layer formed on the surface of the inner tube layer, where the oxide layer is substantially compreend Ida of alumina, chromium oxide, silica, mullite, espinu00e9lios, or mixtures thereof.Also are provided methods of producing and using the bimetal tube.