提高离心铸造球铁管型筒寿命研究

A Study on Increasing Working Life of Mould-Tube for Centrifugally Cast Ductile Iron Pipes

在调查分析热模法型筒主要损坏形式，研究热模法型筒的温度场和热应力，进行材料的热疲劳性能 试验等试验研究工作的基础上，确定了型简材料和制造方法。并提出了型简正确使用和维护的措施，以提高 型筒寿命。

Based on investigating and analyzing the main failure manners of mould tubes used for hot mould process, studying the temperature field and thermal fatigue test of tube material, the material for mould tube and its production method was determined.