油船货油舱内底板焊接接头腐蚀性能研究

• 作 者: 马颖 庞涛 石争鸣 张开广
• 机 构: 武钢研究院,
• 出 处: 武钢技术
• 发表日期: 2015年04期
• 关键词: 货油舱内底板 焊接接头 腐蚀

研究了温度、NaCl溶液浓度、pH值等因素对WDH36N油船货油舱内底板焊接接头腐蚀状况的影响。结果表明:温度升高会加重试样焊接接头的腐蚀状况,较低的NaCl溶液浓度下,试样腐蚀情况较为严重;当NaCl溶液质量分数达到10%后,腐蚀状况基本保持不变。pH值为0.5~0.85时,腐蚀状况基本保持不变;pH值为0.85~1.2时,腐蚀状况严重程度随着pH值增加而增加。

The influence of temperature, concentration of NaCl solution and pH value on the corrosion status of welded joints in cargo tank of WDH36N oil tanker was studied. The results show that the corrosion of the welded joint is aggravated by the increase of temperature, and the corrosion of the sample is more serious when the concentration of NaCl solution is lower. When the mass fraction of NaCl solution reaches 10%, the corrosion state remains basically unchanged. When the pH value is 0.5 ~ 0.85, the corrosion status basically remains unchanged; when the pH value is 0.85 ~ 1.2, the severity of corrosion status increases with the increase of pH value.