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Numerical analysis on safety of copper tube in 165x165mm billet crystallizer
Mar 20, 2018

  Mould Copper tube is a very important part of continuous casting machine, it is a forced water-cooled steel mold, called the "heart" of continuous casting equipment. When the mold work, the inner wall in the molten steel in the gradual condensation state heat transfer, the external wall in the cooling water circulation in the heat out, and then achieve heat conduction. This requires that the copper Crystallizer has a good high temperature strength, that is, under the environment of continuous intense exchange, in the realization of heat conduction, neither recrystallization softening nor obvious plastic deformation can occur.

  The billet continuous casting mould is a typical heat-exchanging component of the main thermal stress, which is very important to ensure its safety. The researchers used the finite element software Ansys Thermal Analysis module to simulate the temperature field, stress field and displacement field distribution of the 10mm copper mold wall of the cast 0.2%c molten steel, and compared the safety of the bad service parts of the mould wall under different heat transfer coefficient conditions. The results show that the hot surface peak temperature of the Crystallizer is 525K, the peak temperature of the mould is 475K, the deformation value of the outer wall of the mold is 0.789mm, the deformation is larger than that of the inner wall, and the maximum equal effect force and maximum strain of the crystallizer appear in the inner wall fillet of the molten steel and air contact respectively, 218MPa and 0.002079. The temperature, deformation and stress of the Crystallizer meet the safety requirements of continuous casting.

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