本文论述了由于电极壳导电功能不足所导致的电极事故,推导出可靠电极壳截面最大允许电流密度计算公式,提出了简单易行的提高电极壳导电性的方法。通过应用验证,均取得了明显效果。 This article discusses the electrode accident caused by the lack of conductive function of the electrode shell and deduces the formula of the maximum allowable current density of the reliable electrode shell section. A simple and easy method to improve the conductivity of the electrode shell is proposed. Through the application of certification, have achieved significant results.