突破蠕墨铸铁生产技术瓶颈的研究与实践  

New Concept of Vermicular Graphite Cast Iron Production Technology and Its Practice

作　　者：邱汉泉 翟志军 傅现强 文景宝 崔宏宝 徐锦锋[5] 梁敬凡 孟卫茹 蒲震 QIU Han-quan;ZHAI Zhi-jun;FU Xian-qiang;WEN Jing-bao;CUI Hong-bao;XU Jin-feng;LIANG jing-fan;MENG Wei-ru;PU Zhen(Shandong Institute of Mechanical Design and Research,Jinan250003,Shandong,China;Hanhe Machinery Co.,Ltd.,Langfang 065500,Hebei,China;Shandong Hua Chen(Rare Earth)Co.,Ltd.,Jinan250215,Shandong,China;Shandong Zibo Vermicular Cast Iron Co.,Ltd.,Zibo 2564O|1,Shandong,China;School of Materials Science and Engineering,Xi'an University of Technology,Xi'an 710048,Shaanxi,China;Shaanxi Zhongyou Special Alloy Technology Co..Ltd.,Xi'an 710116,Shaanxi,China)

机构地区：[1]山东省机械设计研究院,山东济南250003 [2]北京固安汉飞思科精密机械制造有限公司,河北廊坊065500 [3]山东华晨(稀土)有限公司,山东济南250215 [4]山东淄博蠕墨铸铁股份有限公司,山东淄博256401 [5]西安理工大学材料科学与工程学院,陕西西安710048 [6]陕西众友特种合金科技有限公司,陕西西安710116

出　　处：《铸造》2019年第10期1077-1086,共10页Foundry

摘　　要：研究了一种以镁为主要蠕化元素的新型镁-低稀土蠕化剂,用它制取蠕铁件,不需要孕育处理,即使在直径为10 mm的试棒中也没有发现自由碳化物。在Y形试块的铸造中,为获得蠕化率>80%和>50%的蠕铁,其适宜的加入量上下限之差的范围分别为0.3%和0.55%。这么宽的"适宜范围",以人工控制来制取预定蠕化率的蠕铁不困难,而且熔制工艺简单易行,每吨蠕铁消耗的蠕化剂和孕育剂成本可降低62.2%~67.4%,稀土消耗可减少89%~91%。A new vermiculariser with magnesium and low rare-earth content was investigated to manufacture VG iron, without inoculation, even in 10 mm-diameter test bar, free carbide was not found. In Y-shaped specimens, in order to obtain VG iron with vermicular rate > 80% and > 50%, the suitable upper and lower limits of addition amount are 0.3% and 0.55%, respectively. It is not difficult to produce VG iron with predefined VG rate by manual control in such a wide "suitable range". As a result, the melting process was simplified, and the cost of vermicularisers and inoculant consumed per ton was reduced by 62.2%-67.4%, and rare earth by 89%-91%, respectively.

关 键 词：蠕墨铸铁 蠕化元素镁 低稀土蠕化剂 白口倾向 孕育处理 

分 类 号：TG143.49[一般工业技术—材料科学与工程]