蠕墨铸铁生产时冲天炉风口结渣原因探析及措施.pdfVIP

学兔兔 OCt．2011 · 1030· VOI．6O NO．1O 蠕墨铸铁生产时冲天炉风口结渣原因探析及措施 刘春雷 (广西玉柴机器股份有限公司，广西玉林537005) 摘要：针对生产蠕墨铸铁时冲天炉风口出现结渣，风口发黑，严重时一排风口堵塞，一排风口以下的炉缸区焦炭全部 烧空的现象，分别从熔剂的加入量及种类、炉壁效应、控制风焦平衡等方面研究了风口结渣的成因。结果表明：通过 调整下排风口的角度、送风量以及及时清理风口等措施有效地改善了冲天炉风口结渣的现象。 关键词：蠕墨铸铁；冲天炉；风口；结渣 中图分类号：TG232．1文献标识码：B 文章编号：1001—4977(2Ol1)10—1030—03 Causes and Measures of Slagging on Cupola’S Tuyere During Melting of Compacted Graphite Cast Iron LIU Chun—lei (Guangxi Yuchai Machinnew Co．，Ltd．，Yulin 537005，Guangxi，China) Abstract：The slagging often occurs on cupola’S tuyeres during the melting of compacted graphite cast iron；the tuyeres In the upper row even were blocked．and the coke in the hearth in the area below the upper row of tuyeres was burned em pty．To solve the problems above。the reason of slag formation was analyzed frOm aspects such as the addition amount and kind of flux．cupola walI effect．balance controI of wind and coke．etc．The result indicates that the slagging can be decreased effectively through adjusting the angle of tuyeres in the lower row。blast volume and cleaning the tuyeres in time． Key words：compacted graphite cast iron；cupola；tuyere；slagging 广西玉柴机器股份有限公司自2006年开始大批量 生产蠕铁铸件，产品涉及6M、6L缸盖及曲轴箱等产 品。通过对蠕化处理工艺的不断实践摸索，稳定了蠕 化处理过程【”，蠕铁质量控制达到国内先进水平。熔炼 采用7讹冲天炉和7 tI频保温电炉双联。冲天炉为双 排大间距，7 t工频保温电炉可以提温、保温及调整化 学成分，保证出铁温度在工艺范围内，使原铁液成分 稳定。但在蠕铁批量生产过程中发现，生产的中后期 经常出现冲天炉一排风口结渣的现象。严重时一排风 口结渣后，一排风口以下的炉缸区焦炭全部烧空。这 种状况导致冲天炉熔化率急剧下降，铁液成分波动大， 氧化严重，只能提前转为灰铁炉料，严重影响蠕铁的