球铁活塞环的试制

Trial Production of As-cast Ductile Iron Piston Rings

应用３ｔ／ｈ冷风三排小风口冲天炉试制球铁活塞环，获得了ＱＴ７００－２铸态珠光体球铁的成分和处理工艺，并试验研究了铜和铬对其组织与性能的影响。

The production of ductile iron plston ring by 3t/h cold blast cupola were conducted.The compositionand treating process of this king of ductil iron were obtained,and the effect of Cti and Cr on the structure andperformance were studied.