大断面球墨鑄铁板极电渣焊在我国首先由哈工大焊接專业及焊接研究所研究成功。电渣焊在球墨鑄铁上的运用,为“以小拼大,以铁代钢”提供了技术保证。今后許多巨大的鑄鋼部件,都有可能用小段的球墨鑄铁件以电渣焊方法拼合起来代替,使小型鑄造設备也可以制造大型工件。这样,不仅可以改善鑄造工艺,提高鑄件質量,而且可以节約大量钢材,因此对国民經济具有非常重大的意义。 Large-area ductile iron plate electrode electroslag welding in China first by the Harbin Institute of Welding and Welding Institute of successful research. Electroslag welding in ductile iron on the use of “small spell to iron on behalf of the steel” provides technical assurance. Many of the huge cast steel parts in the future are likely to be replaced by short pieces of ductile iron by electroslag welding, allowing small foundries to make large workpieces. In this way, not only can improve the casting process, improve the quality of castings, but also can save a lot of steel, so the national economy is of great significance.