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引言铸铁导卫板的使用寿命很低,因损坏频繁而造成的停机对轧钢生产能力的发挥影响很大。因此,采用Cr—Ni合金导卫板提高导卫板的耐久性具有十分重要的意义。我们采用50公斤高频感应炉,冶炼了10炉Cr—Ni合金导卫板400公斤。先后在本公司第三、四轧钢厂使用,轧制2、3号普碳钢效果良好。使用寿命比铸铁导卫板相应地提高23～44倍,比天津生产的Ci—Ni合金导卫板也有明显提高。本文分析了实验用Cr—Nr合金导卫板使用寿命高及其失效的原因。认为这种
Introduction The service life of cast iron guide panels is very low. Downtime caused by frequent damage has a great influence on the production capacity of rolled steel. Therefore, the use of Cr-Ni alloy guide guard to improve the durability of the guide is very important. We use 50 kg high-frequency induction furnace, smelting 10 furnace Cr-Ni alloy guide plate 400 kg. It has been used in the third and fourth rolling mills of the Company in succession, and rolled No. 2 and No. 3 plain carbon steel works well. The service life is 23 to 44 times higher than that of cast iron guide guard, which is significantly higher than that of Ci-Ni alloy guide guard produced in Tianjin. This article analyzes the experimental Cr-Nr alloy guide plate with high service life and its failure reasons. Think of this