GBT9842-2004-尿素合成塔技术条件.pdf

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1、IGCS971.120.30}Ga中华人民共和国国家标准GB/T9842-2004代替Gs9842-1988尿素合成塔技术条件Specificationforureareactor2004-06-09发布2004-12-01实施中华人民共和国国家质量监督检验检疫总局发布中国国家标准化管理委员会GB/T9842-2004目次朋舀。············⋯⋯‘···········，·····················。·，，·······················。··········，·····················，··⋯I1范围·

2、，···········，········································......................................................12规范性引用文件············，··············································....................·.·.............⋯⋯13术语及定义······························，，，····················。，，······

3、·。··，·················。·················⋯⋯14要求····，············，························································，································，⋯⋯24.l基本要求·································································，························.···········⋯⋯24.2材料甲，......

4、.........................................................................................................24.3加工与成形·······································..·.····················....·⋯⋯，......·..........·..⋯⋯44.4焊接···，·································································

5、·······································，，·⋯74.5热处理···············································⋯⋯，，···········，·········....···⋯⋯，，..·..·.·⋯⋯84.6试板···········⋯⋯丫························································································⋯⋯84.7无损检测···················，·

6、·····················，，·，···‘·，，.，...⋯⋯，·······..⋯⋯“二，.，......⋯⋯95水压试验和渗漏试验··········································.·.·.······，···········.....·...........⋯⋯96不锈钢的表面处理···········，，·································......·....·.....······...·..⋯⋯，.....⋯⋯，.⋯107油漆、包装、运输、标志及出厂技术文件····

7、·········⋯⋯，·，····················........⋯⋯，..⋯⋯，，，，二10GB/T9842-2004前言本标准与GB9842-1988相比主要进行了下列变动:—取消了“关于分瓣冲压球封头的检查”;—增加了“热处理炉内气氛含硫量的控制”;—OOCr25Ni22Mo2不锈钢的晶间腐蚀五个周期的平均腐蚀率R值由1.5pm/48h提高到1.0pm/48h;—对尿素级OOCr17Ni14Mo2不锈钢、尿素级OOCr25Ni22Mo2不锈钢及熔敷金属的化学成分控制范围作了适当的调整;—增加了“母材为OOCr25Ni22Mo2不锈钢、

8、熔敷金属为OOCr25Ni22Mo2不锈钢，母材、焊