本文研究设计的新型水再压缩等离子弧割炬,也可以作为浅水下等离子弧割炬,还可以作为一般等离子弧割炬。文中较详细地介绍了该割炬喷嘴的结构,列举了切割2.5～60mm厚不锈钢和10～23mm厚铝板的一些技术数据。本文还对等离子弧切割时产生的有害气体、粉尘及经济效果进行了分析。 This paper studies the design of a new water-compressed plasma arc torch can also be used as a shallow underwater plasma arc torch, but also as a general plasma arc torch. The structure of the torch nozzle is introduced in detail in this paper. Some technical data about cutting 2.5 ~ 60mm thick stainless steel and 10 ~ 23mm thick aluminum plate are listed. The article also analyzes the harmful gas, dust and economic effects produced by plasma arc cutting.