Study on Coating Process for Natual Gas Pipeline
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摘要: 对比钢管“先内后外”和“先外后内”两种防腐工艺对内涂层固化程度、固化温度和固化设备的要求。分析认为：“先内后外”的方式对固化程度的要求较高，可适当增加固化炉长度，以延长高温固化时间，提高固化效果，传动装置不需用软垫保护，固化时钢管表面温度一般不超过80℃；“先外后内”方式对固化程度的要求不高，可适当缩短固化炉长度，避免浪费，传动装置需用软垫或其他保护装置，3PE防腐层固化温度不能超过30℃。Abstract: Two kinds of anti-corrosion processes, i.e.inside-to-outside process and outside-to-inside process, are compared by their requirements for inner coating curing degree, curing temperature and curing equipment.The results show that the inside-to-outside process has higher requirement to curing degree, so the length of the curing furnace can be properly increased and the time for high temperature curing be extended to improve curing performance;furthermore, the drive device needs no protective cushion and the pipe surface temperature during curing process is normally not more than 80℃.Meanwhile, the outside-to-inside process has lower requirement to curing degree, so the length of the curing furnace can be properly decreased to avoid waste;furthermore, the drive device needs a cushion or other protective device and the curing temperature for 3PE anti-corrosion layer shall not be higher than 30℃.
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期刊类型引用(3)
1. 张云龙，王志明，石梦蕊，于辉荣. 钢管表面水洗装置在3PE防腐线上的设计与应用. 钢管. 2023(05): 62-64 . 
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2. 李泽兵. 天然气加工工艺及其发展前景预测. 中国设备工程. 2020(08): 76-77 . 百度学术
3. 杨国威. 天然气加工工艺及其发展前景. 化学工程与装备. 2020(11): 87-88+91 . 百度学术
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