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Crystal solidification casting process parameters on the strip

Author: DuXuan
Tutor: SunBinZuo
School: Taiyuan University of Science and Technology
Course: Iron and steel metallurgy
Keywords: Twin-roll strip casting and rolling Primary dendrite radius Secondary dendrite arm spacing Numerical Simulation Grain Process parameters
CLC: TG335
Type: Master's thesis
Year: 2009
Downloads: 69
Quote: 0
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Abstract


The twin-roll strip casting technology as a cutting-edge technology of the field of metallurgy , short process , low power consumption , high speed and low cost of the world's attention , but this method has not been completely successful in the industrial production of iron and steel materials . Twin-roll thin strip casting process , narrow the scope of control of process parameters , and a little out of control and will seriously damage the quality of the strip casting . Therefore , this technology is urgently demand the application of computer simulation technology to simulate its solidification process , to take this method for optimization of process parameters to guide the production . Numerical simulation of this article select the twin-roll strip strip casting solidification process issues , and use of large-scale finite element analysis software continuous casting module combined with the C language program , different process parameters on the process of solidification microstructure investigated do research study are as follows : 1 . in strip Casting solidification process , the heat transfer problems are important factors shadow temperature field and solidification . This paper discusses the twin-roll strip casting and rolling process heat transfer mechanism and the main influencing factors , to establish a heat conduction equation under the generalized conditional , and latent heat processing . 2 . Continuous casting module combined application of the finite element analysis software programs written in C language , the crystal radius of the dendritic solidification process of casting and rolling strip and the secondary dendrite different pouring temperature , cooling intensity, casting speed and other factors the spacing of doing numerical simulation, and come to a different process conditions on the casting and rolling strip once the radius of the dendrite and secondary dendrite arm spacing . 3 . Continuous casting module combined application of the finite element analysis software programs written in C language , the influence of the numerical simulation of the solidification CRYSTALLIZATION granularity different pouring temperature , cooling intensity, casting speed and other factors on the casting and rolling strip crystal obtained the influence of different process conditions on the grain size of the casting and rolling strip . Through the comparison of the solidification simulation results of the grain size under different process parameters strip drawn analog optimal process parameters : pouring temperature of 1590 ° C , the cooling intensity is 5000 W/m2 ? K , the casting speed 40m/min. Obtained through the comparison of experimental results with numerical simulation results , the correctness of the simulation results , the simulation results of practical significance .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal pressure processing > Rolling > Rolling process
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