基于DOE实验设计方法的聚丙烯焊接工艺优化

采用DOE实验设计方法,对聚丙烯(PP)材料焊接工艺进行了研究,确定了影响PP材料焊接强度的关键因素是气压夹紧力、焊接功率和样品厚度。通过全因子正交试验,对焊接强度和焊接工艺参数进行量化分析,通过优化器结果确定对共聚PP(牌号M60RHC)为原材料,样品厚度为2 mm,控制气压夹紧力为0.3 MPa,焊接功率控制在40 W,得到PP材料的最佳焊接工艺,降低了实验的次数,在该最大工艺条件下,焊接强度达到19.475 MPa。这将有助于其他原材料体系进行高效激光焊接工艺的筛选。

Improvement on Laser Welding of Polypropylene by DOE Experimental Design Method

The laser welding process of polypropylene(PP)was studied by using DOE experimental design method.Clamping force controlled by air pressure,welding power,sample thickness was measured as key factors.The quantitative analysis of welding strength and welding process,the optimal welding process was obtained according to the result of optimizer.Copolymerized PP(M60RHC)was chosen as raw material and the thickness of samples were 2 mm,clamping force was set as 0.3 MPa,power was set as 40 W.The numbers of experiment were decreased.The laser welding strength was 19.475 MPa by the optimal welding process.It would be useful for other raw materials to screen for more efficient laser welding process.