摘要
为了探究Al-Si合金铸件力学性能与铸造工艺参数之间的关系,基于消失模铸造,设计Box-Behnken响应曲面法建立消失模铸造工艺参数(如变质剂用量、铸件壁厚和浇注温度)与ZL102合金铸件力学性能的回归模型,通过Design-Expert10软件对ZL102合金铸件力学性能进行回归系数及方差分析,对其消失模铸造工艺参数进行优化,得到力学性能更优的Al-Si合金铸件。结果表明,消失模铸造工艺参数对ZL102合金抗拉强度的影响顺序为:铸件壁厚>变质剂用量>浇注温度;对ZL102合金伸长率的影响顺序为:铸件壁厚>浇注温度>变质剂用量。因此,最优工艺参数组合:变质剂用量为3.5%,铸件壁厚为5mm,浇注温度为750℃。
In order to explore the relationship between mechanical properties of Al-Si alloy and casting process parameters,the Box-Behnken response surface method was designed to establish a regression model of the technological parameters of lost foam casting(modifier addition,casting wall thickness and pouring temperature)and the mechanical properties of Al-Si alloy castings(tensile strength and elongation).The regression coefficient and variance analysis of mechanical properties of lost foam casting ZL102 alloy parts were carried out by Design-Expert10 software.The process parameters of lost foam casting Al-Si alloy were optimized and the Al-Si alloy castings with the satisfied mechanical properties were obtained.The results show that the influencing order of process parameters on tensile strength of ZL102 Al-Si alloy presents as follows:casting wall thickness> modifier addition>pouring temperature.The influencing order on elongation of ZL102 Al-Si alloy is as follows:casting wall thickness>pouring temperature>modifier addition.The optimized technological parameters are presented as follows:3.5%modifier addition,wall thickness of 5 mm and pouring temperature of 750℃.
作者
李辉
杨锋
袁博
Li Hui;Yang Feng;Yuan Bo(Department of Mining Engineering, Liiliang College;College of Mechanical Engineering, North University of China)
出处
《特种铸造及有色合金》
CAS
北大核心
2019年第3期286-289,共4页
Special Casting & Nonferrous Alloys
基金
吕梁学院科研基金项目(ZRQN201605)
关键词
消失模铸造
力学性能
工艺参数
响应曲面法
Lost Foam Casting
Mechanical Properties
Process Parameters
Response Surface Method
