Safety Numerical Analysis of 165×165mm Square Billet Mold Copper Tube The mold copper tube is a very important part of the continuous casting mach
Safety Numerical Analysis of 165×165mm Square Billet Mold Copper Tube
The mold copper tube is a very important part of the continuous casting machine. It is a forced water-cooled bottomless steel ingot mold, which is called the "heart" of the continuous casting equipment. When the mold is working, the inner wall conducts heat transfer in the gradual condensation state of the molten steel, and the outer wall conducts heat transfer in the circulating flow of cooling water, thereby realizing heat transfer. This requires the copper mold to have good high temperature strength, that is, under the environment of continuous violent exchange, while achieving heat conduction, neither recrystallization softening nor obvious plastic deformation can occur. The billet continuous casting mold is a typical heat exchange component that is mainly subjected to thermal stress, and it is very important to ensure its safety.
Researchers use the finite element software ANSYS thermal analysis module to numerically simulate the temperature field, stress field and displacement field distribution of the wall surface of the 10mm copper mold cast with 0.2% C molten steel, and compare the results of the crystallization under different heat transfer coefficients. The safety of the harsh service parts of the wall surface. The results show that the peak temperature of the hot surface of the mold is 525K and the peak temperature of the cold surface is 475K; the deformation value of the outer wall of the mold is 0.789mm, which is larger than the deformation of the inner wall; the maximum equivalent stress and the maximum strain of the mold appear in the molten steel The rounded corners of the inner wall in contact with air are 218MPa and 0.002079 respectively. The mold temperature, deformation and stress meet the safety requirements of continuous casting.
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Harm of too high temperature: when molten steel out of cooper mold, the billet shell is thin and easy to break out; The accelerated erosion of refractory can ea
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1. The barrier function (mainly completed by the liquid slag layer) isolates the contact between air and molten steel, blocks the secondary oxidation of molten
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In continuous casting, low corrosion resistance often occurs, which directly leads to uneven composition and will eventually affect the smelting quality. In or