使用低合金废钢生产合成铸铁熔炼工艺的研究及应用  

Research and application of smelting process for producing synthetic cast iron with low alloy scrap steel

作　　者：周瑞 白忠军 张玉松 刘王强 ZHOU Rui;BAI Zhongjun;ZHANG Yusong;LIU Wangqiang(Shaanxi Fast Gear Co.,Ltd.,Baoji 722409,Shaanxi China)

机构地区：[1]陕西法士特齿轮有限责任公司,陕西宝鸡722409

出　　处：《中国铸造装备与技术》2022年第6期87-92,共6页China Foundry Machinery & Technology

基　　金：企业创新争先青年人才托举计划项目。

摘　　要：介绍了主要以低合金废钢和生铁为主料,使用石墨化增碳剂调整碳含量,生产合成灰铸铁熔炼工艺及在消失模铸造生产中应用的关键技术。熔炼过程中石墨增碳剂首先用于增碳,同时石墨微粒的扩散在铁液中生成大量弥散的非均质晶核,强化铁液的孕育预处理。低合金废钢带入大量微合金元素,改善铸件基体组织和促进细片状A型石墨的形成,从而提升铸件的硬度和机械性能。The melting process of synthetic gray cast iron and the key technology applied in EPC production have been introduced by using low alloy scrap&pig iron as the main materials and graphitizing carburizing agent to adjust the carbon content.During smelting,graphite carburant is first used for carburizing,and at the same time,the diffusion of graphite particles generates a large number of dispersed heterogeneous nuclei in molten iron,strengthening the inoculation and pretreatment of molten iron.Low alloy scrap brings in a large number of micro-alloying elements,improves the casting matrix structure and promotes the formation of fine flake A-type graphite.Thus in this way,the hardness and mechanical properties of the casting have been improved.

关 键 词：合成铸铁 低合金废钢 增碳剂 消失模铸造 

分 类 号：TG243[金属学及工艺—铸造]