电渣不锈钢宏观缺陷分析及改进方法

Analysis and improvement methods of macroscopic defects of electroslag stainless steel

本文分析了电渣不锈钢20Cr13宏观缺陷出现原因,通过钠元素的追踪锁定宏观缺陷由原始电极坯大颗粒夹渣导致,电渣重熔后未完全去除,说明电渣过程对大颗粒物的去除是有限的,也为生产实践者提供了不同的分析角度,并提出了采用两次电渣和降低熔化速率消除宏观缺陷的生产工艺。

This article analyzes the causes of macroscopic defects of electroslag stainless steel 20Cr13.By track-ing and locking the sodium element,the macroscopic defects are caused by the inclusion of large particles in the original electrode billet,which are not completely removed after electroslag remelting.This indicates that the re-moval of large particles by the electroslag process is limited,and the different analysis perspectives are provided for producers.A production process that uses twice electroslag and reduces the melting rate to eliminate macroscopic defects is proposed.