论文部分内容阅读
一、氢鼓包的情况:我厂液态烃容器(包括球形罐)经常发现氢鼓包。如1977年裂化液态烃罐停工检修发现氢鼓包,内部鼓包直径(?)50—200mm,鼓包100多处,下部比上部严重,鼓包有的开裂。未开裂的测鼓包层厚度为6～8mm。经金相检验;组织为珠光体+铁素体,呈带状组织,4～5级。硫化检查:硫化物呈条状及连续点状夹杂。鼓包开裂则沿硫化物、氧化物等夹杂方向开裂,只好重新加工更换。原液态烃罐材质为16Mn,操作压力13kg/cm~2,工作温
First, the situation of Hydrogen Drum Package: Hydrocarbon packages are often found in our liquid hydrocarbon containers (including spherical tanks). Such as the 1977 cracked liquid hydrocarbon tank shutdown overhaul hydrogen drum kits, the inner drum diameter (?) 50-200mm, more than 100 drum kits, lower than the upper part of the serious, kits have cracking. Uncracked drum drum thickness of 6 ~ 8mm. Metallographic examination; organization of pearlite + ferrite, was ribbon-shaped organization, 4 to 5 levels. Vulcanization inspection: Sulfide strip and continuous dot inclusion. Drum cracking along the sulfide, oxide and other inclusions in the direction of cracking, had to re-processing replacement. The original liquid hydrocarbon tank material is 16Mn, operating pressure 13kg / cm ~ 2, working temperature