线性低密度聚乙烯反应器热电偶银钎焊密封技术
|
摘要
银钎焊不仅能获得可靠的强度和良好的抗腐蚀性,而且焊接时的温度并不太高,能使被焊金属保持原来的金相结构,发生的机械性能变化和结构变形也比较少。热电偶内部含有电子元件,热敏性强,焊接时存在难度。文章介绍了银钎焊技术在国内某大乙烯建设项目中、线性低密度聚乙烯反应器一体化温度变送器热电偶与护套之间焊接密封上的成功应用,可为同类部件的焊接提供借鉴。
Silver soldering and brazing can obtain reliable strength and good corrosion resistance;when welding is carried out,the temperature isn′t high and the original metallographic structure of the welded metal can be maintained;the mechanical properties change and structure deformation are relatively small.The internal of thermocouple contains electronic components which have strong heat sensitivity,so there are difficulties in welding.This paper introduces the successful application of silver soldering and brazing technology in the welding seal between the temperature transmitter thermocouple of the linear low density polyethylene reactor and the sheath.
Silver soldering and brazing can obtain reliable strength and good corrosion resistance;when welding is carried out,the temperature isn′t high and the original metallographic structure of the welded metal can be maintained;the mechanical properties change and structure deformation are relatively small.The internal of thermocouple contains electronic components which have strong heat sensitivity,so there are difficulties in welding.This paper introduces the successful application of silver soldering and brazing technology in the welding seal between the temperature transmitter thermocouple of the linear low density polyethylene reactor and the sheath.
引文
[1]李炳锋,赵睿,晏立强.汽化炉内件的焊接工艺[J].石油化工设备,2010,39(3):70-72.
[2]牛迎战,李铁柱,郑春凡.离心泵接管法兰焊缝失效原因分析及处理[J].石油化工设备技术,2012,33(4):58-60.
[3]李铜,钱莉,王文杰.管道焊接技术[J].电焊机,2007,37(12):32-35.
[4]刘成玉,许先果,赵建华,等.长输管道焊接方法的选择与应用[J].电焊机,2007,37(11):56-59.
[5]张振永.长输油气管道焊接方法及焊材选用[J].焊管,2004,27(2):37-42.
[6]颜爱政,刘华,刘雷,等.长输油气管道焊接技术的应用[J].油气储运,2008,27(8):40-43.
[7]樊学华,庄贵涛,李向阳,等.长输油气管道焊接方法选用原则[J].油气储运,2014,33(8):885-890.
[2]牛迎战,李铁柱,郑春凡.离心泵接管法兰焊缝失效原因分析及处理[J].石油化工设备技术,2012,33(4):58-60.
[3]李铜,钱莉,王文杰.管道焊接技术[J].电焊机,2007,37(12):32-35.
[4]刘成玉,许先果,赵建华,等.长输管道焊接方法的选择与应用[J].电焊机,2007,37(11):56-59.
[5]张振永.长输油气管道焊接方法及焊材选用[J].焊管,2004,27(2):37-42.
[6]颜爱政,刘华,刘雷,等.长输油气管道焊接技术的应用[J].油气储运,2008,27(8):40-43.
[7]樊学华,庄贵涛,李向阳,等.长输油气管道焊接方法选用原则[J].油气储运,2014,33(8):885-890.