蠕墨铸铁柴油机气缸体喂丝蠕化稳定生产工艺  

Stable Production Process of Compacted Graphite Iron Diesel Engine Cylinder Block With Feeding Cored-wire Technology

作　　者：张敏之 鲁栋 卢彬彬 杨淑欣 时晓 许景峰 

机构地区：[1]潍柴重机股份有限公司滨海铸造厂,山东潍坊261001

出　　处：《铸造设备与工艺》2015年第4期8-10,共3页Foundry Equipment & Technology

摘　　要：蠕墨铸铁作为一种新型的铸造材料具有灰铸铁和球墨铸铁的综合性能,已经在发动机关键零部件(如气缸体、缸盖)上得到应用。本文介绍了喂丝蠕化工艺在蠕墨铸铁柴油机气缸体生产中的应用,通过严格控制原铁水成分、喂丝蠕化工艺、浇注过程等工艺参数能够实现蠕墨铸铁气缸体的稳定生产,其铸件蠕化率均达到80%以上,抗拉强度在450MPa以上。As a new kind of casting material, compacted graphite iron（CGI） has the comprehensive performance of gray cast iron and nodular cast iron.It has been applied in the engine key parts （cylinder block, cylinder head）.Feeding cored-wire technology of CGI production have been introduced in this paper.h can realize stable production of CGI with control of the original composition of the molten iron and pouring process and other process parameters.The vermicular graphite rate of casting alloys is higher than 80%, and the strength is more than 450 MPa.

关 键 词：=蠕墨铸铁 喂丝工艺 蠕化率 稳定生产 

分 类 号：TG25[金属学及工艺—铸造] TK426[动力工程及工程热物理—动力机械及工程]