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采用离心铸造的碳钢--高铬铸铁复合管界面达到了冶金结合.利用ANSYS有限元软件对复合管凝固过程外层及内外层温度场进行了模拟与分析.模拟结果表明:离心浇注外层20钢大约9 s后,铸件最低温度为1430℃,已经低于20钢固相线温度1490℃,由此可见,浇注间隔时间为9s时,可形成规则稳定的过渡层.当外层20钢的温度降至1350℃时,浇注高铬铸铁,大约30 s后,内层的温度已降至1257℃,低于高铬铸铁固相线温度,此时,内层熔体已经完全凝固.
The centrifugal casting of carbon steel - high chromium cast iron composite pipe interface to achieve a metallurgical combination.Using ANSYS finite element software to simulate and analyze the outer and inner and outer layer temperature field during the solidification process of the composite pipe.The simulation results show that: centrifugal casting outer layer After 20 seconds, the minimum temperature of castings was 1430 ℃, which was lower than the solidus temperature of 1490 ℃ .From this, it can be seen that when the pouring time is 9s, the stable transition layer can be formed.When the outer layer of 20 steel The temperature of the inner layer has dropped to 1257 ° C, which is lower than the solidus temperature of high chromium cast iron. At this time, the inner layer melt has completely solidified.