①低溫壓力容器受壓元件應選用鎮靜鋼。
The low temperature pressure vessel compression element should choose the calm steel.
②低溫壓力容器受壓元件一般要求正火處理,目的細化晶粒,均勻顯微組織,降低鋼材無塑性轉變溫度。
The low temperature pressure vessel element general requirements for normalizing treatment to grain refinement and uniform microstructure, reducing the steel nil ductility transition temperature.
③必須做設計溫度下低溫沖擊試驗(V)。
Temperature impact test (V) must be done at design temperature.
④鋼板δ>20mm,應逐塊超聲波檢測。
The steel plate should be piecewise >20mm, ultrasonic detection.
⑤設計溫度在-70到-100區間,目前國內尚無合適材料,可選用奧氏體不銹鋼。-100~ -196℃,應選用奧 氏體不銹鋼。
The design of temperature in the -70 to -100 range, at present there is no suitable material, can be used for austenitic stainless steel. -196 -100~ C, should be used austenitic stainless steel.
⑥根據《容規》三類容器的主要受壓元件應進行材料復檢驗。
According to the main pressure elements "content regulation" three containers should be material inspection.
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