热模离心球铁管Ti含量对T型管承口成形质量的影响

Effect of Ti Element Content in Centrifugal Ductile Iron Pipe by Hot Mold Coating on Forming Quality of T-Shaped Pipe Socket

球化铁液成分对热模离心球墨铸铁管产品的力学性能、金相等内在质量影响很大。对热模离心球墨铸铁管外观质量和成分之间关系的研究比较少,尤其是对承口的外观质量方面的研究。生产中大量的实物与数据比对发现,铁液Ti元素和热模大口径面成形质量存在关联性。分析了承口D3面成形质量缺陷的成因,重点分析球化铁液的Ti元素的含量和承口D3面的成形质量对应关系,从而找到控制承口D3面的最优质量的方法。

The composition of ductile iron melt has a great influence on the mechanical properties,metallography and other internal qualities of hot mold centrifugal ductile iron pipe.There is little research on the relationship between the appearance quality and composition of the hot mold centrifugal ductile iron pipe,especially on the appearance quality of bell mouth.A large number of physical objects in production were compared with data,and it was found that there was a correlation between Ti element in molten iron and the forming quality of large-diameter surface of hot die.The causes of forming quality defects on the D3 surface of the bell mouth were analyzed,and the corresponding relationship between the content of Ti element in the ductile iron melt and the forming quality of the D3 surface of the bell mouth was emphatically analyzed,so as to find the method to control the optimal quality of the D3 surface of the bell mouth.