一种负压连铸装置与方法，属于金属铸造技术领域。本发明通过在连铸装置上安装抽气系统进行抽气，使导流管和铸型等共同构成的腔体内部形成负压，实现连铸过程中主动吸引金属熔体中和固液界面前沿的气体快速逸出金属熔体，有助于获得气体含量低的高质量金属铸坯。本发明的负压连铸装置结构简单、操作维修方便、生产效率高、适用范围广、制造成本低，能够安全、低成本、高效生产出各种规格、低气体含量、高质量的金属铸坯，特别适合于保温炉低于铸型的水平式连铸或下引式连铸。

The invention relates to a negative pressure continuous casting device and a method, belonging to the technical field of metal casting. By installing an air extraction system on a continuous casting device to extract air, a negative pressure is formed in the cavity which is composed of a guide pipe, a casting mold, etc. In the continuous casting process, the gas in the molten metal and the front of the solid–liquid interface can be actively attracted to escape from the molten metal quickly, which is helpful to obtain high quality billet with low gas content. The negative pressure continuous casting device has the advantages of simple structure, convenient operation and maintenance, high production efficiency, wide application range and low manufacturing cost, it is safe, low cost and high efficiency to produce all kinds of metal billet with low gas content and high quality. It is especially suitable for horizontal continuous casting or down casting with holding furnace lower than mould.