REXROTH電磁閥液壓裝置中容易產生噪聲的元件一般認為是泵和閥，閥中又以溢流閥和電磁換向閥等為主。產生噪聲的因素很多。

    力士樂電磁閥的噪聲有流速聲和機械聲二種。流速聲中主要由油液振動、空穴以及液壓沖擊等原因產生的噪聲。機械聲中主要由閥中零件的撞擊和磨擦等原因產生的噪聲。

    REXROTH電磁閥由閥體、閥罩、電磁組件、彈簧及密封結構等部件組成，動鐵芯底部的密封塊借助彈簧的壓力將閥體進氣口關閉。通電后，電磁鐵吸合，動鐵芯上部帶彈簧的密封塊把排氣口關閉，氣流從進氣口進入膜頭，起到控制作用。

    當力士樂電磁閥失電時，電磁力消失，動鐵芯在彈簧力作用下離開固定鐵芯，向下移動，將排氣口打開，堵住進氣口，膜頭氣流經排氣口排出，膜片恢復原來位置。在我們的制氧設備中，在透平膨脹機進口薄膜調節閥的緊急切斷等處有應用。

    力士樂電磁閥爆炸性環境：必須選用相應防爆等級產品，露天安裝或粉塵多場合應選用防水，防塵品種。

    REXROTH電磁閥公稱壓力應超過管內zui高工作壓力。

上海維特銳在德國與REXROTH合作，可長期穩定供應REXROTH電磁閥，REXROTH換向閥，REXROTH油泵，REXROTH導軌，力士樂柱塞泵等產品

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