Microstructure and Properties of Cast Iron Dryer after Long Term Service
摘 要
研究了某造纸厂2台分别服役62 a和43 a的铸铁烘缸不同位置的显微组织和力学性能。结果表明:2台烘缸缸体及端盖均无明显的表面缺陷和裂纹缺陷,基体组织均为无明显球化的珠光体,石墨片的尺寸和分布均主要为A型,服役62 a烘缸前端盖和服役43 a烘缸后端盖的石墨片长度均较长;2台烘缸缸体和端盖的硬度均满足标准要求;除服役62 a烘缸前端盖的抗拉强度低于标准外,2台烘缸其余位置的抗拉强度均满足标准要求,服役62 a烘缸前端盖和服役43 a烘缸后端盖的抗拉强度明显较其他位置的低;2台超长年限服役烘缸在0.22 MPa的最高工作内压载荷下仍具有足够的强度。
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.
中图分类号 TG146.2 DOI 10.11973/jxgccl202103006
所属栏目 试验研究
基金项目 广州市市场监督管理局科技项目(2020kj19)
收稿日期 2020/4/19
修改稿日期 2021/1/8
网络出版日期
作者单位点击查看
备注刘课秀(1984-),男,广东广州人,高级工程师,硕士
引用该论文: 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 for mechancial engineering, 2021, 45(3): 29~34
刘课秀,马括,封小亮,王恋,谢小武,卢忠铭,李露水. 超长年限服役后铸铁烘缸的组织和性能[J]. 机械工程材料, 2021, 45(3): 29~34
共有人对该论文发表了看法,其中:
人认为该论文很差
人认为该论文较差
人认为该论文一般
人认为该论文较好
人认为该论文很好
参考文献
【1】常治国,董继先,党睿,等.纸机烘缸的研究进展[J].中国造纸学报,2012,27(4):50-53. CHANG Z G, DONG J X, DANG R, et al. Research progress in the dryer of paper machine[J].Transactions of China Pulp and Paper,2012,27(4):50-53.
【2】张晓斌,黄更平,叶海波,等.进口铸铁烘缸爆炸事故技术分析[J].中华纸业,2014,35(8):53-56. ZHANG X B, HUANG G P,YE H B,et al. Technical analysis on an explosion accident of imported dryer[J].China Pulp Paper Industry,2014,35(8):53-56.
【3】裴旭明,刘超锋,刘建秀,等.造纸机烘缸灰铸铁材料及其铸造技术[J].铸造,2008,57(12):1233-1236. PEI X M, LIU C F, LIU J X, et al. Gray iron and its foundry technologies for dryers of paper-making machine[J]. Foundry, 2008,57(12):1233-1236.
【4】沈功田,王鹤萤,李丽菲,等.铸铁承压设备声发射特征研究[J].中国特种设备安全,2014,30(9):9-16. SHEN G T, WANG H Y, LI L F, et al. The activity characteristics of acoustic emission produced by cast iron pressure equipments[J]. China Special Equipment Safety,2014,30(9):9-16.
【5】吉德三.铸铁件残余应力测试与处理[J].贵州工业大学学报,1997,26(增刊1):116-119. GU D S. Residual stress test and treatment of iron castings[J]. Journal of Guizhou University of Technology,1997,26(S1):116-119.
【2】张晓斌,黄更平,叶海波,等.进口铸铁烘缸爆炸事故技术分析[J].中华纸业,2014,35(8):53-56. ZHANG X B, HUANG G P,YE H B,et al. Technical analysis on an explosion accident of imported dryer[J].China Pulp Paper Industry,2014,35(8):53-56.
【3】裴旭明,刘超锋,刘建秀,等.造纸机烘缸灰铸铁材料及其铸造技术[J].铸造,2008,57(12):1233-1236. PEI X M, LIU C F, LIU J X, et al. Gray iron and its foundry technologies for dryers of paper-making machine[J]. Foundry, 2008,57(12):1233-1236.
【4】沈功田,王鹤萤,李丽菲,等.铸铁承压设备声发射特征研究[J].中国特种设备安全,2014,30(9):9-16. SHEN G T, WANG H Y, LI L F, et al. The activity characteristics of acoustic emission produced by cast iron pressure equipments[J]. China Special Equipment Safety,2014,30(9):9-16.
【5】吉德三.铸铁件残余应力测试与处理[J].贵州工业大学学报,1997,26(增刊1):116-119. GU D S. Residual stress test and treatment of iron castings[J]. Journal of Guizhou University of Technology,1997,26(S1):116-119.
相关信息