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LIU Kexiu, MA Kuo, FENG Xiaoliang, WANG Lian, XIE Xiaowu, LU Zhongming, LI Lushui. Microstructure and Properties of Cast Iron Dryer after Long Term Service[J]. Materials and Mechanical Engineering, 2021, 45(3): 29-34. DOI: 10.11973/jxgccl202103006
Citation: LIU Kexiu, MA Kuo, FENG Xiaoliang, WANG Lian, XIE Xiaowu, LU Zhongming, LI Lushui. Microstructure and Properties of Cast Iron Dryer after Long Term Service[J]. Materials and Mechanical Engineering, 2021, 45(3): 29-34. DOI: 10.11973/jxgccl202103006
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Microstructure and Properties of Cast Iron Dryer after Long Term Service

  • Guangzhou Special Pressure Equipment Inspection and Research Institute, Guangzhou 510663, China

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  • Received Date: April 18, 2020
  • Revised Date: January 07, 2021
    Graphical Abstract
    • Abstract
  • The microstructure and mechanical properties at different positions of the two cast iron dryers in a paper mill after service for 62 a and 43 a were studied. The results show that there was no obvious surface defects and crack defects on the cylinder and end cover of the two dryers. The microstructure of substrate was pearlite without obvious spheroidization, and the size and distribution of the graphite sheets were mainly A type. The length of the graphite sheet of the front end cover of the dryer after service for 62 a and the rear end cover of the dryer after service for 43 a was relatively long. The hardness of the cylinder and the end cover of the two dryers all met the standards. The tensile strength of the front end cover of the dryer after service for 62 a was lower than the standard requirements, while those of the other positions of the two dryers all met the standard requirements. The tensile strength of the front end cover of the dryer after service for 62 a and the rear end cover of the dryer after service for 43 a was obviously lower than that of other positions. Both the two dryers still had sufficient strength under the maximum working internal pressure load of 0.22 MPa.
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    • References (6)
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