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概述不銹鋼散熱器的許用溫度

發布時間:2021-09-02  點擊次數:2811 次
       1、和翅片材質有關,如翅片材質為鋁,熔點是660℃。所以鋼鋁復合翅片管不適用于高溫煙氣的換熱系統中。考慮到高溫煙氣具有硫的成分,散熱器應用不銹鋼,翅片類型采用高頻螺旋翅片管。
       2、和加工工藝有關。如翅片管210℃開始體現,而普通繞鋼片的翅片管從150℃左右,其接觸熱阻曲線就呈明顯上升趨勢。
       3、一般情況下,和基管的壁厚關系影響不大。普通無縫鋼管正常壁厚情況,其耐壓能力比較高,鋼管壁厚特定的情況下,隨鋼管直徑的增加,耐壓能力下降。
       4、和管板,管箱的設計強度有關。管板,管箱的壁厚越厚,翅片管散熱器的承壓能力越高。
       5、和焊接工藝有關。焊接時產生的氣孔、夾渣、未焊透、裂紋等均影響不銹鋼散熱器的承壓能力,而壓力與溫度一般都呈正比關系式。

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