The practice indicates that the quality of liquid steel is improved, the inclusion and gas content is decreased. The steel properties conform the national standards.

生产实践证明，底吹氩能改善和提高钢水的内在质量，降低钢中夹杂物含量和气体含量，吹氩后钢质的力学性能符合国家标准。

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When liquid metal flows through the filter, there will be vacuum produced in filter's hole. Inclusion and gas in liquid metal were absorbed to the filter by vacuum, that cause liquid metal cleaning.

金属液流经过滤介质时，由于流动在孔道内产生真空，液态金属内的夹杂和气体被负压吸附到过滤介质的表面而产生净化作用。

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An unreasonable liquid steel flow behaviors have an effect on inclusion flotation, bubble distribution, liquid mold flux fluid capability and spreadability, shell growth, etc.

不合理的钢液流动行为，会影响夹杂物的上浮、气泡的分布、保护渣的熔化及铺展性能、初生坯壳的形成等。

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