【摘要】 介绍了对电极把持器中易损部件固定套和水冷套的改进及其材质的选择，指出采用双水套构成的把持器，电极导向性好，寿命较长；在进行防磁处理的前提下可用普炭钢代替不锈钢做水套，并可降低造价。更多还原

【Abstract】 Improvements on quick-wear parts, fixed hoop, water-cooled hoop and material selectioll are introduced. Electrode holder with double water-cooled hoop possesses the characteristics of good guiding and long life span. It is possible to replace stainless steel with common straightcarbon steel by antimagnetic treatment, which can reduce cost accordingly.更多还原