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SCM822H钢3t铸锭缩孔缺陷优化的数值模拟 被引量:4

Numerical Simulation on Optimization of Shrinkage Cavity Defect of Steel SCM822H 3 t Ingot
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摘要 在现场脱锭时铸锭表面温度测定值的基础上,利用ProCAST软件建立了SCM822H钢(/%:0.20C、0.80Mn、O.25Si、0.013P、0.006S、1.14Cr、0.39Mo、0.01V、0.036A1、0.000 2B)3 t铸锭(锭身高1 675 mm,冒口倾角65.3°,冒口内液面高290 mm)充型和凝固过程的计算模型。通过该模型计算得出冒口倾角、锭身高宽比与缩孔引起的锭身切除体积比的关系,优化了锭型参数一锭身高宽比为1 864/530,冒口倾角90°。按照优化锭型参数的模拟结果表明,采用新锭型可使锭身切除体积由原先的13.5%降至0,可保证将缩孔缺陷完全控制在冒口内。 Based on the measured value of ingot surface temperature in ingot stripping at situ, with using ProCAST software the calculation model for filling and solidifying process of 3 t ingot ( body height I 675 ram, hot top inclined angle 65.3°, height of liquid surface in hot top 290 mm) of steel SCM822H (/% : 0. 20C, 0. 80Mn, 0. 25Si, O. 013P, O. 006S, 1.14Cr, 0. 39Mo, 0. 01V, 0. 036A1, 0.000 2B) has been established. With calculation by the model the relation between hot top inclined angle, ingot body height-width ratio and body cut-off volume ratio caused by shrinkage cavity is gotten to get the optimized ingot parameters i. e. body height-width ratio 1 846/630 and hot top inclined angle 90°. According to optimized ingot mould parameters the simulation results show that with using the new ingot mould the ingot body cut-off volume ratio decreases from original 13.5% to 0, it is available to ensure all the shrinkage cavity is in the hot top.
出处 《特殊钢》 北大核心 2013年第5期16-19,共4页 Special Steel
基金 国家自然科学基金资助(No.51074021)
关键词 SCM822H钢 3t铸锭 缩孔 充型和凝固过程 PROCAST软件 数值模拟 Steel SCM822H, 3 t Ingot, Shrinkage Cavity, Filling and-Solidifying Process, ProCAST Software,Numerical Simulation
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