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①低溫壓力容器受壓元件應(yīng)選用鎮(zhèn)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(xì)化晶粒，均勻顯微組織，降低鋼材無塑性轉(zhuǎn)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(shè)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(yīng)逐塊超聲波檢測。
The steel plate should be piecewise >20mm, ultrasonic detection.
⑤設(shè)計溫度在-70到-100區(qū)間，目前國內(nèi)尚無合適材料，可選用奧氏體不銹鋼。-100~ -196℃，應(yīng)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(jù)《容規(guī)》三類容器的主要受壓元件應(yīng)進(jìn)行材料復(fù)檢驗。
According to the main pressure elements "content regulation" three containers should be material inspection.
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