Shanghai Daoqin Plastics Co., Ltd.

         Tenth Construction company in project 精心组织实施, 球罐安装专业队6 month true 组装施焊, in SINOPEC project 80 10,000 tons / year 蒸汽裂 understanding plant/unit ethylene low temperature 球罐 安装 welding, overall hot 处理完 formed, separation in 11 month 25 day and 28 day water pressure experiment/testing one-time formed 功.

        两台 low temperature 材质 球罐每台 heavy 290吨, 直径15.7米, thick 40 mm, 容积2000立方米, due to it use easy easy ethylene 介质, 该球罐 安装, for, welding, hot 处理, water pressure experiment/testing and other 每一道工序 quality control requirements 严格, especially is welding, hot 处理, water pressure experiment/testing this 三道工序, technology quality requirements high, 关严.

        针 for high quality requirements low temperature 球罐, and use 136 block “足球瓣”球 housing/shell sheet/plate for formed, long 762米 球罐体焊缝 welding heavy 任, Tenth Construction 严 球罐 welding quality 关, use 帆布 整 球罐封闭起, separation good anti anti as; in welding front, according to specification requirements, for welding sheet/plate front electrical add hot, preheating temperature degree to 150摄氏 degree above, can sheet/plate welding, welding in electrical using/adopting short 距离焊缝 more welding methods, ensure welding temperature degree maintain in 150摄氏 degree above, 当一段 sheet/plate welding formed rear, also need maintain rear hot temperature degree 200摄氏 degree in small above. in engineering technology 质检人员 巡回检查, 严格监控 lower, electrical 焊工们严格 according to welding process specification welding, most rear 经 第三方100%射线拍 sheet/slice 检查, 两台球罐762米焊缝 one-time welding qualification rate in 99% above.

         is remove 球罐组 for welding in generate force, stability 球罐几何 dimensions,改变 welding versus 组织, improve/increase metal tough property and resistant force can force, anti cracks generate, low temperature welding formed rear, Tenth Construction 球罐专业安装队, for low temperature also 进行极 is overall hot 处理, use 60 mm thick temperature by, 整 球体包扎严实, rear in inner add hot rise temperature, in hot machine testing control lower, 整 球体经 12 small uniform add hot rise temperature to 580摄氏 degree, again temperature 2.5 small 时, rear speed reduce temperature to 400摄氏 degree, hot process according to specification solution/scheme 实施, most make welding process in generate force full remove, to design indicators requirements, 该工序经 质监站, 业主, 监理, 承包商 共检验收检查 combined 格.

         is 检验球罐 overall strong/high degree, 球体组 for welding quality, improvement 球罐 承载 can force, in hot 处理完 formed rear, also in 11 month 25 day and 28 day, separation for ethylene low temperature 球罐注 water water pressure experiment/testing, specification requirements design pressure 1.95兆帕, in resistant pressure experiment/testing process in experiment/testing pressure is 2.44兆帕, in pressure process in, 广东省 specialty equipment expert, and 各参建 mono quality 监督检查人员, in 球罐现场监督检查.

        经 water pressure experiment/testing 检查监测, low temperature in 2.44兆帕 experiment/testing pressure lower, holding pressure 30 separation 钟, 经检查球体没 has 出现任何跑冒渗漏 phenomenon, 经监测 water pressure experiment/testing table/sheet 指针无变化, ethylene low temperature water pressure experiment/testing one-time formed 功, again 现 组 for welding excellent quality, high water 平.