【摘要】 总结了近年来在离心SHS陶瓷复合钢管陶瓷层上形成的裂纹类型及其形成机理、陶瓷层裂纹控制方面取得的进展。热应力和钢管的压迫力是离心SHS陶瓷复合钢管陶瓷层产生裂纹的两个主要原因 ,欲减少陶瓷层裂纹的形成 ,除了选用合适的工艺配方 ,关键要在中高温阶段从工艺上严格控制陶瓷复合钢管整体的冷却速率更多还原

【Abstract】 According to the cooling hologram of centrifugal SHS ceramic lined composite pipe (C SHS CLCP) put forward by the author, the crack types and their formation mechanisms of the ceramic layer of C SHS CLCP during the cooling process were schematically discussed. On the basis of the above results, effects of metallurgical and processing factors on the crack formation of C SHS CLCP were analyzed in detail, and the progress of control technologies in recent years to diminish the ceramic crack failure was summarized. It was pointed out that the thermal stress and the compression pressure of the substrate pipe are the two main causes to the formation of cracks in the ceramic layer. In order to diminish the ceramic crack damage, it is very important to control the cooling rate not only of the ceramic layer but also of the substrate pipe except appropriate compounding during the moderate and high temperature stages.更多还原