摘要
Hastelloy-C-276具有较好的抗腐蚀性能,自20世纪60年代以来逐步应用到化工领域的关键设备中。在管板与换热管连接接头的焊接过程中,由于某些原因容易出现连接接头过烧的现象。通过Hastelloy-C-276管板焊接中的正常焊接试件、过烧试件、过烧修补试件焊缝附近的金相组织比较及晶间腐蚀试验,对过烧对哈氏合金耐腐蚀性能的影响进行了简要分析。
Hastelloy-C-276 is a kind of material with good corrosion resistance,which is gradually applied to the chemical field of key equipment since 1960s.Owing to unreasonable welding process,it is easy to produce an over-burn phenomenon existing in heat exchanger＇s tube and tube-sheet joints of Hastelloy-C-276 material.In order to find rule of over-burn on corrosion resistance of C-276 and avoid its endangerment,the normal welded tube specimens,over-burn specimens and over-burn repair specimens near welding line have been investigated by means of metallurgical structure comparison and intergranular corrosion test.
出处
《石油化工设备》
CAS
2011年第4期17-19,共3页
Petro-Chemical Equipment
