方型锅炉落煤筒的研制  

Development of Square Coal Tube in Boiler

作　　者：高平[1] 王婵[2] 郭在在[3] 付利涛 兰兰[1] 邸建辉[1] 闫志飞[1] 田迎春[2] 郭永亮[1] 

机构地区：[1]中国兵器工业集团第五二研究所,内蒙古包头014034 [2]内蒙古科技大学,内蒙古包头014034 [3]中国兵器工业集团第五二研究所烟台分所,山东烟台264003

出　　处：《铸造技术》2014年第11期2751-2753,共3页Foundry Technology

摘　　要：针对焊接制造锅炉落煤筒服役早期出现变形和开裂失效的原因,提出了消失模铸造落煤筒的方案,并采取了设计"井"形防变形拉筋,加大铸件铸造倒角半径,调整优化材料的化学成分等措施。同时介绍了消失模铸造落煤筒的熔炼、浇注、模型制作、涂料涂刷和模型装箱等工艺。实践证明,研制的落煤筒使用寿命是焊接制造的1.6倍,有效地提高输煤效率和企业的经济效益。Aimed at the reasons for the early deformation in service and cracking failure of the welding-manufactured square tubes in coal boiler, a lost foam casting process scheme for the square tubes in coal boiler was put forward, and some measures were adopted, such as designing a ＂well＂ shape deformation brace,increasing casting chamfering radius,adjusting chemical composition of the material, and so on. The production process for the square tubes in coal boiler were introduced,including lost foam casting process, melting and pouring process, model making and coating process, and model packing process. Practice proves that the service life of the cast square tubes is 1.6 times of welding tubes,which effectively improve the efficiency of transporting coal and the enterprise economic benefit.

关 键 词：锅炉落煤筒 消失模铸造 耐热耐磨铸钢 

分 类 号：TG249.6[金属学及工艺—铸造]