摘要：为了解决废旧印刷线路板资源化利用过程中的粗碎问题,分析其破碎过程受力特点,提出选择差速破碎方法;根据线路板基板的特点,选择"以点代线"的方法对其断裂破碎进行模拟;利用Minitab软件设计破碎实验,根据实验结果进行因子分析,并结合二分法进行二次实验。结果表明:"以点代线"的模拟方法具有一定的可行性;差速破碎比等速破碎具有更高的破碎效率;Minitab软件在废旧印刷线路板基板破碎实验设计上具有一定的可靠性;确定差速破碎参数为差速50 Hz-25 Hz,破碎效率可达90.4%。

关键词：废旧印刷线路板；粗碎；实验设计；数值模拟

Abstract： To solve the crushing problem of resource utilazation of waste printed circuit boards （WPCB）， their mechanical characteristics were analyzed， and the differential crushing method was put forward. Based on the features of WPCB， the method of “Point to Line” was selected to conduct numerical simulation for fracture of WPCB. Minitab software was used to design the crushing experiment， some results were choosed to analyze the factors， then the second experiment was conducted combined with Dichotomy. The results show that the method of “Point to Line” is reliable， and the differential crushing method has a better crushing efficiency than the constant crushing method. Minitab is proved reliable on the design for crushing experiment of WPCB. The parameters for differential crushing is 50 Hz-25 Hz， and the crushing efficiency reaches 90.4%. 

Keywords: waste printed circuit board； crushing； eperiment design； numerical simulation