高压加氢临氢装置用碳钢无缝钢管国产化研究

Research on Localization of Carbon Steel Seamless Tube as Used for High Pressure Hydrogenation Unit

从成分设计、冶炼、轧制及热处理工艺流程等方面,介绍了一种高压加氢临氢装置用Gr.B无缝钢管的生产方法:结合高压加氢临氢装置用碳钢无缝钢管的腐蚀特点,通过研究钢管的化学成分设计,控制钢坯的冶炼工艺及夹杂物技术,控制钢管的热处理工艺。试验结果表明:研发的高压加氢临氢装置用碳钢Gr.B无缝钢管,其冶金质量、化学成分、力学性能、无损检测等各项指标均满足ASTM/ASME相关规范的要求,产品的屈服强度≤345 MPa、硬度≤180 HBW,且抗腐蚀性能达到设计和使用要求。

A manufacturing process for Gr.B steel seamless tube used for high pressure hydrogenation unit is elaborated here in the essay involving such major aspects as chemical composition design, and manufacturing process flows of melting, rolling and heat treatment etc. Considering the corrosion characteristics of the said tube, the chemical composition design is studied, the melting process and inclusion level of the billet, and the heat treatment process for the tube are all controlled. Results of relevant tests of the tube as developed show that its metallurgical quality, chemical composition, mechanical properties, and NDT data are all in compliance with applicable requirements as specified under ASTM/ASME, and that its yield strength（≤345 MPa） , hardness（ ≤180 HBW） and corrosion resistance are also up to the designed and operating requirements.