REXROTH電磁閥液壓裝置中容易產(chǎn)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(chǎn)生噪聲的因素很多,。

    力士樂REXROTH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(chǎn)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(chǎn)生的噪聲,。

力士樂分步直動式電磁閥：
    原理：REXROTH電磁閥是一種直動和先導式相結合的原理，當入口與出口沒有壓差時,，通電后,，電磁力直接把先導小閥和主閥關閉件依次向上提起，閥門打開,。當入口與出口達到啟動壓差時,，通電后，力士樂電磁閥電磁力先導小閥,，主閥下腔壓力上升,，上腔壓力下降，從而利用壓差把主閥向上推開,；斷電時,，先導閥利用彈簧力或介質壓力推動關閉件，向下移動,，使閥門關閉,。
    特點：REXROTH力士樂電磁閥在零壓差或真空,、高壓時亦能可*動作,，但功率較大，要求必須水平安裝,。

上海維特銳在德國與REXROTH合作,，可長期穩(wěn)定供應力士樂電磁閥，REXROTH導軌,，力士樂柱塞泵等產(chǎn)品

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