| 排气歧管熔模铸造充型和凝固过程数值模拟与优化 |
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| 引用本文： | 方圆;周吉祥;于赟;胡静;杜庆柏.排气歧管熔模铸造充型和凝固过程数值模拟与优化[J].江苏石油化工学院学报,2013(3):45-49. |
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| 作者姓名： | 方圆;周吉祥;于赟;胡静;杜庆柏 |
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| 作者单位： | 常州大学常州市先进金属材料重点实验室;常州武帆合金有限公司;江苏理工学院 |
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| 基金项目： | 常州市创新资金(CC20120033);武进区工业攻关项目资助(WG2011005) |
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| 摘 要： | 采用ProCAST铸造模拟软件对汽车排气歧管充型和凝固过程进行数值模拟。对原有生产工艺模拟表明,在冒口与底盘法兰的接触面处存在缩孔缺陷,工艺出品率较低,约为38.8%。模拟结果与实际生产情况吻合。优化工艺为:增大冒口尺寸,以增加冒口补缩距离;减小直浇道部位尺寸,将排气管移至直浇道顶部。模拟结果表明,优化工艺生产的排气歧管缩松缩孔明显减小,且缩孔全部集中于冒口部位,原底盘法兰处缺陷消失。同时,工艺出品率显著提高,由原来的38.8%提高到49.1%。
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| 关 键 词： | 排气歧管 ProCAST软件 缩孔 工艺出品率 熔模铸造 |
Simulation and Optimization of Investment Casting Process for Auto Exhaust Manifold |
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| Affiliation: | FANG Yuan1,ZHOU Ji-xiang2,YU Yun3,HU Jing1,DU Qing-bo1(1.Key Laboratory of Advanced Metal Materials of Changzhou City,Changzhou University,Changzhou 213164,China;2.Changzhou Wufan Alloy Co.,Ltd.,Changzhou 213000,China;3.Jiangsu University of Technology,Changzhou 213001,China) |
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| Abstract: | The ProCAST software was effectively used to simulate the mold filling and solidification process of the auto exhaust manifold.The results show that the porosity existed on the flange surface and the casting yield was low,which was in good agreement with the real production case.Based on the simulation results,the casting process of the exhaust manifold was optimized.The results show that the porosity on the flange surface was eliminated,and the casting yield was increased from 38.8% to 49.1%. |
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| Keywords: | exhaust manifold ProCAST software porosity casting yield investment casting |
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