在连铸过程中使用氩气主要有两个目的，即避免水口堵塞和去除氧化物夹杂。有些氩气被捕获于铸坯的凝固壳中，有时会使最终产品产生缺陷。应用了几种技术来检测铸坯中的氩气。由于两相流比较复杂，因此氩气在连铸坯的厚度和宽度方向呈不均匀分布。 The use of argon in the continuous casting process has two main purposes, namely, to prevent the nozzle from clogging and removing oxide inclusions. Some argon gas is trapped in the solidified shell of the slab, sometimes causing defects in the final product. Several techniques have been applied to detect argon in the slab. Due to the complexity of the two-phase flow, argon is unevenly distributed in the thickness and width of the slab.