FRACTURE ANALYSIS OF THE PIPES FOR EXCHANGING BOILER′S SURPLUS HEAT

CHEN Ling; LIANG Si-zu; LIU Zheng-yi; WU Zhi-wei

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PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING > 2007 > 43(3): 144-146.

CHEN Ling, LIANG Si-zu, LIU Zheng-yi, WU Zhi-wei. FRACTURE ANALYSIS OF THE PIPES FOR EXCHANGING BOILER′S SURPLUS HEAT[J]. PHYSICAL TESTING AND CHEMICAL ANALYSIS PART A:PHYSICAL TESTING, 2007, 43(3): 144-146.

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FRACTURE ANALYSIS OF THE PIPES FOR EXCHANGING BOILER′S SURPLUS HEAT

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Received Date: April 23, 2006

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In this paper,the failure reason of the pipes transporting boiler′s surplus heat are analyzed. After a comprehensive study on chemical composition,microsturcture,fractures and cracks,the results show that the fractures occured under the effects of combined freting and erosion of the airflow from the flue,it is suggested to use steel with high temperature strength and high anti-erosion,at the same time,strictly controlling the content of sulfur and oxygen in the flue is necessary.
- Failure analysis,
- Heat exchanging,
- Erosion

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[1]	GB 3077-1978 合金结构钢号及化学成分［S］．
[2]	刘正义,吴连生,许麟康,等.机械装备失效分析图谱［M］.广州:广东科技出版社,1990．
[3]	周永欣,吕振林,张敏,等.30CrMo钢泵体开裂失效分析［J］.机械工程材料,2004,28(9):52-54．

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