摘要
以注塑成型的飞机气门减震器为研究对象,探究其液路孔圆柱度的工艺参数优化方案。以熔体温度、模具温度、保压压力及保压时间为研究的自变量,设计正交试验并进行分析。结果表明:各工艺参数对液路孔圆柱度的影响程度排序为:保压时间>熔体温度>模具温度>保压压力。当工艺参数组合为A_(2)B_(2)C_(2)D_(3),即熔体温度330℃、模具温度140℃、保压压力80 MPa、保压时间12 s,液路孔圆柱度获得最优值。优化工艺的液路孔圆柱度为0.218 mm,相比初始工艺降低38.6%,优化效果显著,且满足设计指标的要求。采用优化工艺进行试模得到的样品外观状态良好,液路孔圆柱度满足要求,证明优化工艺的合理性。
Taking an injection molded aircraft valve shock absorber as the research object, the process parameter optimization scheme of the cylindricality of liquid path holes was investigated. Taking melt temperature, mold temperature, holding pressure, and holding time as independent variables, orthogonal test was designed and analyzed. The analysis results show that the influence degree of each process parameter on the cylindricality of the liquid path holes is ranked as: holding time>melt temperature>mold temperature>holding pressure. The optimal value is obtained when the process parameters are combined as A_(2)B_(2)C_(2)D_(3), that is melt temperature of 330 ℃, mold temperature of 140 ℃, holding pressure of 80 MPa, and holding time of 12 s. The optimization process has a liquid path hole cylindricality of 0.218 mm,which is 38.6% lower than that of the initial process. The optimization results are significant, which meet the requirements of the design indexes. The appearance of the samples obtained by testing with the optimized process is in good condition,and the cylinder degree of the liquid path holes meets the requirements, which proves the rationality of optimized process.
作者
温晓玲
贾杨
王嵩
WEN Xiao-ling;JIA Yang;WANG Song(Shenyang Aircraft Design and Research Institute,Shenyang 110031,China;School of Reliability and System Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China)
出处
《塑料科技》
CAS
北大核心
2022年第1期93-96,共4页
Plastics Science and Technology
关键词
气门减震器
玻纤增强PA6T
正交试验
圆柱度
工艺优化
Valve shock absorber
Glass fiber reinforced PA6T
Orthogonal test
Cylindricity
Parameters optimization
