硅、铬、铜对铝液测温用铸铁保护管耐铝液侵蚀性能的影响  

Effect of Si,Cr and Cu on the Corrosion Resistance to Aluminum Melt of Cast Iron Protector Tube Used for Measuring Temperature of Aluminum Melt

作　　者：王金洪[1] 

机构地区：[1]莱芜钢铁集团有限公司技术中心,山东莱芜271104

出　　处：《铸造》2001年第7期384-387,共4页Foundry

摘　　要：采用正交设计 ,往铸铁中加入一定量的硅、铬、铜 ,可使铝液测温用铸铁保护管铸件的组织得到细化。研究了合金含量和铸铁金相组织对铸铁耐铝液侵蚀性能的影响。结果表明 ,铜含量在 0 2 9%～ 0 89%范围内、硅含量在2 49%～ 3 0 9%范围内增加时 ,可提高铸铁耐铝液侵蚀性能 ;铬含量在 0 47%～ 1 49%范围内、硅含量在 1 89%～2 49%范围内增加时 ,会降低铸铁耐铝液侵蚀性能 ;片状石墨和细片状珠光体数量越多 。Orthogonal design has been adopted in this experiment. By adding Si,Cr and Cu into the cast iron, the microstructure of cast iron protector tube used for measuring temperature of aluminum melt can be refined. The influence of alloying element content and the microstructure of cast iron on corrosion resistance of the cast iron to aluminum melt has been investigated. The experimental results show that, on the base content of alloying elements in the cast iron, increasing the content of Cu to 0 29%～0 89% and Si to 2 49%～3 09 % will improve corrosion resistance of the cast iron; increasing the content of Cr to 0.47%～1.49% and Si to 1 89%～2 49% will decrease corrosion resistance of the cast iron. Enhancing volume fraction of the flaky graphite and the slim flaky pearlite will improve corrosion resistance of the cast iron.

关 键 词：正交设计 铸铁 铝液 侵蚀 片状石墨 珠光体基体 测温 热电偶保护管 

分 类 号：TG143.9[一般工业技术—材料科学与工程]