烧结不锈钢丝网多孔板材的冲压成形研究  

Stamping forming research for sintered stainless steel wire mesh porous plate

作　　者：段留洋 周照耀[1] DUAN Liu-yang;ZHOU Zhao-yao(National Engineering Research Center of Near-Net-Shape Forming For Metallic Materials,School of Mechanical and Automotive Engineering,South China University of Technology,Guangzhou 510640,China)

机构地区：[1]华南理工大学机械与汽车工程学院国家金属材料近净成形工程技术研究中心

出　　处：《塑性工程学报》2019年第5期57-64,共8页Journal of Plasticity Engineering

基　　金：广东省科技计划资助项目(2016A010103006);广州市科技计划资助项目(201604016015)

摘　　要：以烧结不锈钢丝网多孔板为材料,在室温条件下通过胀形试验和筒形拉深试验研究材料的冲压成形性能。胀形试验结果显示,材料的胀形极限随着厚度及直径的增大而增大;厚度为1.4和1.75 mm的多孔板在直径Φ110 mm的冲模下胀形高度达到30 mm未出现破裂,说明材料具有良好的塑性。筒形拉深试验显示,拉深力随板材的厚度、直径的增大而增大,随孔隙率的增大而减小;厚度为1.2 mm时,拉深极限比为1.8。根据塑性力学基本理论,推导了烧结不锈钢丝网多孔板的拉深力预测公式,将理论预测与实际试验数据对比,验证了公式的适用性。研究结果表明,烧结不锈钢丝网多孔材料具有较好的塑性,可进行冷冲压成形,有助于拓展多孔隙功能材料的应用领域。Taking the sintered stainless steel wire mesh porous plates( SWPPs) as the object,the stamping forming performance was studied by bulging and deep drawing tests at room temperature. The bulging experiment results show that the bulging limit of the SWPPs increases with the increase of thickness and diameter. The bulging height of SWPPs with thickness of 1. 4 and 1. 75 mm is up to 30 mm under the die with diameter of Φ110 mm,indicating that the material has good plasticity. The deep drawing test shows that the drawing force increases with the increase of thickness and diameter,and decreases with the increase of porosity. When the thickness is 1. 2 mm,the drawing limit ratio is 1. 8. Based on the basic theory of plastic mechanics,the prediction formula of drawing force of SWPPs was derived,and the correctness of the formula was verified by comparing the theoretical prediction with the actual experimental data. The results show that the SWPPs have good plasticity and can be used for cold stamping forming,which is helpful to expand the application field of porous functional materials.

关 键 词：烧结不锈钢丝网多孔板 冲压成形 胀形 拉深 塑性成形性能 

分 类 号：TH140.7[一般工业技术—材料科学与工程]