Ductile Iron Lost Foam Casting Technology Development and Production Application about Medium and Small Sized Castings in China
The article focuses on the selection and research &development of foam material and casting process, and analyzes the successful and fAlling cases in the application of lost foam casting of ductile iron, mAlnly for the following three points: first, Chinese STMMAwith stable quality and excellent briquettability is close to Japan in properties, and has been used in more than 30 companies of ductile iron. Compared with the EPS, foam material of STMMA can significantly reduce the carbon defects in ductile iron, thereby rAlse the percent of pass; second, ductile iron parts have been successfully applied in small and medium pieces of rAllway castings and auto parts (Brand QT450-1O). Particularly in the small-scale ductile iron castings, string pouring process is used to improve the production yield (up to 80％) and production efficiency; third, spheroidization level of ductile iron parts is low, mostly Grade three, Grade one or two few, making ductile iron in China has a low-grade elongation. So, it is difficult to produce qualified products of Brand QT400-18. There are still some problems with ductile iron lost foam casting of China, such as flow mark, the carbon inclusions, and so on.
lost foam casting ductile iron STMMA String pouring process rate of spheroidizing
He Wenhao Ye Shengping Han Xiaohong Tang Suoyun
State Key Laboratory Of Materials Processing and Die & Mould Technology School of Material Science a CASTCHEM( HangZhou) , INC
国际会议
69th World Foundry Congress(第69届世界铸造会议 WFC 2010)
杭州
英文
978-982
2010-10-16（万方平台首次上网日期，不代表论文的发表时间）