| 隔热管爆裂机理的研究 |
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| 引用本文： | 李德高,陈立佳,刘正,王赫莹. 隔热管爆裂机理的研究[J]. 沈阳工业大学学报, 1995, 0(3) |
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| 作者姓名： | 李德高 陈立佳 刘正 王赫莹 |
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| 作者单位： | Li Degao，Chen Lijia，Liu Zheng Wang Heying (Dept，of Metal Materail Engineering，SPU) (Dept. of Science，SPU) |
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| 摘 要： | 对油田开采稠油时，热注蒸汽的隔热管爆裂问题进行了研究，通过时隔热管断口形貌、材料成分及显微组织的分析指出：隔热管爆裂发生在抽气孔焊接缺陷处，裂纹在管中之所以会迅速扩展是由于粒状贝氏体，上贝氏体及魏氏组织等造成材料的低温脆性较高所至。同时提出了防止隔热管爆裂的一些具体措施．
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| 关 键 词： | 隔热层，低温，脆性断裂 |
Study on brittle Cracking Mechanism of Heat-insulated Tubing |
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| Li Degao,Chen Lijia,Liu Zheng Wang Heying. Study on brittle Cracking Mechanism of Heat-insulated Tubing[J]. Journal of Shenyang University of Technology, 1995, 0(3) |
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| Authors: | Li Degao Chen Lijia Liu Zheng Wang Heying |
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| Abstract: | It has been investigated in the paper for the problem about the brittle cracking of theheat-insulated tubing to occur when the thermal recovory of heavy oil with the steam injec-tion is made. Based on the analysis of the fracture morphology,material composition andmicrostructure of the heat-insulated tubing.It is considered that the crack nucleus originatefrom the weld defect of the bore hole, The rate of crack propagation is very great in the tub-ing because of higher brittleness of granular bainite, upper bainite and widoanstatten structureat low temperature. some measures preventing heat-insullated tubing from brittle crackingare also proposed in the paper. |
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| Keywords: | heat insulation layer low temperature brittle fracture |
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