废硫酸回收用钽管的加工研究

Processing Research of Tantalum Tube Used for Waste Sulfuric Acid Recycling

研究了废硫酸回收用钽管的加工工艺。通过改进挤压管坯镗内孔的工艺,实现了挤压管坯不中断,用较长的挤压管坯生产φ25×0.9×11000mm的长钽管,减少了管材切头尾的长度,提高了管材成品率。在确定成品管前一道次管坯的尺寸时,要综合考虑LD30轧机最大装料长度、钽材的变形程度和减径量与减壁量的比值。用本工艺所制备的钽管已用于废硫酸回收的钽蒸发器的制造,获得良好的应用效果。

By improving the boring holes process for extruding tube, the continuos extrusion process of the tube is realized. As a result, the tantalum tube with dimension of Ф25×0.9×11 000 mm was produced, which reduced the number of the ends for the tube, increased the yield of finished products. To determine the dimension of black tube of previous pass in the finished, the largest mill LD30 loading length of tantalum material, the deformation volume and the ratio of sizing and wall Reduction shall be taken into acount.