可燃容器抽滤模具流量分布优化方法研究

Study on Flow Distribution Optimization Mehtod of Filter Die for Combustible Containers

由于抽滤工艺形成的薄壁可燃容器毛坯厚度与质量分布不均匀、产品合格率低,且严重影响模压容器的强度和燃尽性,提出可燃容器抽滤模具结构优化方法,通过有限元分析模具内腔流量分布规律,依据细长孔流量公式建立模具内腔各层域流量补偿数学模型,进行流量采集试验,试验结果与流量补偿数学模型计算结果基本一致。利用流量补偿数学模型计算得到了模具内腔流量补偿管道关键尺寸,采用3D打印技术制作了模具样机,并进行了毛坯抽滤试验,获得厚度与质量分布均匀的合格毛坯,验证了所提方法的可行性。

With regard to the uneven thickness and mass distribution of thin-wall rough combustible containers formed by pumping and filtering process,the low qualified rate of products and poor strength and burn-out of molded container,a structural optimization method of the die for combustible containers was proposed.The flow distribution in the cavity of the die was analyzed by finite element method,and according to the slender hole flow formula,a mathematical model of the flow compensation data for each layer in the die cavity was established,on which the flow acquisition test was carried out,with the results basically consistent with the calculation results of the flow compensation mathematical model.The key dimensions of the flow compensation pipeline were gained based on the established mode.By 3D printing technology,a mold prototype was made and rough filtering test was conducted to abtain a qualified blank with uniform thickness and mass distribution,which verifies the feasibility of the proposed method.