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Smart-Keen is a comprehensive supplier for cast heat-resistant steel casting inluding heat-resistant grinder,hammers,jaws,abnormity heat-resistant steel castings,corrosion resist steel castings,wear resist steel casting.You can count on Smart-Keen excellent steel foundry for high performance in high heat environments.We are specialized in manufacturing heat resistant cast steel and carbon steel castings,manganese steel castings,alloy steel castings. Smart-Keen heat-resistant steel types having improved resistance to catalytic carbonization and coking.The invention relates to components manufactured from heat-resistant steel castings, in particular tubes such as furnace tubes, which are provided on at least one side with a layer for improving resistance in particular to catalytic carbonization and coking. According to the invention, a component manufactured from heat-resistant steel, in particular a tube, is obtained which is provided on at least one side with a layer applied by welding, which layer comprises Ni, Cr and Al Ni, Cr and Si or Ni, Cr, Al and Si. It is interesting that martensite is the key microstructure in the most modern of cast steels. This may be an accidental consequence of alloy design, or it may be a fortunate outcome. Factors controlling the size of martensite plates are discussed and novel experiments are proposed to identify the role of the martensite plate boundaries. At the same time, there are some detrimental consequences of a martensitic or bainitic microstructure which need to be controlled for optimum properties.
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