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我厂用A3钢制造压力容器时(采用埋弧自动焊工艺),试板的冷弯试验经常出现不合格现象,这也是许多压力容器制造厂普遍存在的一个问题,本文对不合格的试样进行了分析讨论。 1.材料及试验情况 A3钢已在化工、石油行业中广泛用于常温低中压压力容器中,并允许有限制地使用于压力容器主要受压元件。使用规定,板厚度不得大于16mm,设计压力不得大大1MPa,温度不得低于0℃。我厂所用A3钢板,进厂时质保书齐全,
I plant with A3 steel pressure vessel manufacturing (using submerged arc welding technology), cold bending test panels often appear unqualified phenomenon, which is also a pressure vessel manufacturer many common problems, this paper on the failure of the sample Analyzed and discussed. 1. Materials and test conditions A3 steel has been widely used in the chemical and petroleum industries at room temperature and medium pressure pressure vessels, and allows limited use of pressure vessels in the main pressure components. Use regulations, the thickness of the plate shall not exceed 16mm, the design pressure shall not be greatly 1MPa, the temperature shall not be lower than 0 ℃. A3 steel used in our plant, into the factory warranty book is complete,