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对硝铵包装厂房房架钢梁的断裂原因进行了分析。结果表明,钢梁断裂是由硝酸铵应力腐蚀引起,钢架材料对应力腐蚀的敏感性随硝酸铵溶液的温度和浓度提高而增加。在分析的基础上提出了钢梁的防护措施。
The reasons for the fracture of the steel frame girder of ammonium nitrate packing plant were analyzed. The results show that the fracture of the steel beam is caused by the stress corrosion of ammonium nitrate, and the sensitivity of the steel frame to stress corrosion increases with the temperature and concentration of the ammonium nitrate solution. Based on the analysis, the protective measures of steel beam are proposed.