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为适应气液介质净化过滤技术的发展需要,研制了厚度∠0.1mm、孔径分布均匀、高渗透性的微孔超薄镍带材。用擦辊技术解决了带材厚度和密度的不均匀性。对原始粉末进行了气分级,除掉大颗粒、获得了孔径分布高度均匀的多孔结构。生带孔隙度在50～60％时,辊径25mm可轧出0.08mm厚的带材,辊径16mm可轧出0.045mm厚的带材。通过控制轧制条件,得到了同一孔隙度不同厚度和同一厚度不同孔隙度的带材。并测出了渗透性和孔径的关系。在同一厚度和孔隙度条件下,研究了粉末粒度和粒度组成对渗透性和孔径分布的影响。
In order to meet the development needs of gas-liquid media purification and filtration technology, a microporous ultrathin nickel strip with thickness ∠0.1mm, uniform pore diameter distribution and high permeability was developed. With the roller technology to solve the strip thickness and density of non-uniformity. The raw powders were gas-fractionated to remove large particles and obtain a porous structure with highly uniform pore size distribution. Raw porosity of 50 to 60%, the roll diameter of 25mm can be rolled 0.08mm thick strip, roll diameter 16mm 0.045mm thick strip. By controlling the rolling conditions, the same porosity of different thickness and thickness of the same thickness of the strip. And measured the relationship between permeability and pore size. Under the same thickness and porosity conditions, the effects of particle size and particle size composition on permeability and pore size distribution were investigated.