往连铸结晶器中心部位添加元素的方法(之一) 一、前言对含有加大表面裂纹敏感性的B.Nb.V等成分的连铸坯,为了减少表面裂纹,采用往结晶器中心部位添加经过选择的铁皮包裹金属丝,尽可能降低上述元素在铸坯表面浓度的方法。为此进行了水力模型试验,结果确认了其可能性和必要条件。 Add to the center of the continuous casting mold (part one) I. Preface To include increasing the surface crack sensitivity of B.Nb. V and other ingredients of the slab, in order to reduce surface cracks, to the center of the mold Add a selected iron-clad wire, as far as possible to reduce the concentration of these elements in the surface of the slab. A hydraulic model test was conducted for this purpose, confirming the possibilities and necessary conditions.