A516 Gr.60低温钢使用国产焊材的工艺研究

Study on the welding process of domestic welding material for A516-Gr.60 low-temperature steel

某石化行业的聚丙烯装置由泰德管业科技有限公司承揽部分膨胀节的制造,设计温度为-46℃,承压接管材料选用ASME规范中推荐使用的A516-Gr.60无镍低温钢,为保证产品的低温使用性能,生产前进行了工艺评定试验,通过试验数据表明,合理制定焊接工艺,选用国产J507DRJ、507焊条,严格控制焊接线能量和层间温度,获得的焊接接头性能能满足GB150-1998或ASME标准[1]的要求。

The polypropylene device in the certain petrochemical industry,which our company is in charge of manufacturing part of expansion joints.The product design temperature is-46 ℃,the pressure needs to choose A516 Gr.60 low-temperature steel materials which is recommended by ASME criterion.In order to ensure product performance we make process evaluation experiment pre-production,the experimental data show that the welding connector performance can satisfy with GB150-1998 or ASME requirement by choosing domestic J507DR,J507 welding rod,but it must draw up reasonable welding process and strictly control the welding heat input and the layer temperature.