上海弘佩液壓設(shè)備有限公司是一家從事經(jīng)營國外進(jìn)口液壓氣動備件、自動化儀表的貿(mào)易公司；專注于工業(yè)傳動自動化流體領(lǐng)域。主營產(chǎn)品電磁閥、柱塞泵、數(shù)控模塊、伺服電機(jī)、可編程控制器、傳感器、氣動元件、工業(yè)儀器儀表等。經(jīng)營品牌有：博世力士樂rexroth、阿托斯ATOS、Parker派克、EATON VICKERS伊頓、穆格MOOG、YUKEN油研，哈威HAWE、賀德克HYDAC等進(jìn)口品牌。
原裝M-3SED10UK13/350CG24N9K4大量現(xiàn)貨

單向閥又稱止回閥或逆止閥。用于液壓系統(tǒng)中防止油流反向流動,或者用于氣動系統(tǒng)中防止壓縮空氣逆向流動。
單向閥有直通式和直角式兩種。直通式單向閥用螺紋連接安裝在管路上。直角式單向閥有螺紋連接、板式連接和法蘭連接三種形式。液控單向閥也稱閉鎖閥或保壓閥，它與單向閥相同，用以防止油液反向流動。但在液壓回路中需要油流反向流動時又可利用控制油壓，打開單向閥，使油流在兩個方向都可流動。液控單向閥采用錐形閥芯，因此密封性能好。在要求封閉油路時，可用此閥作為油路的單向鎖緊而起保壓作用。液控單向閥控制油的泄漏方式有內(nèi)泄式和外泄式二種。在油流反向出口無背壓的油路中可用內(nèi)泄式；否則需用外泄式，以降低控制油壓力。
原裝M-3SED10UK13/350CG24N9K4大量現(xiàn)貨

單向閥的作用
（1）普通單向閥的作用是使油液只能沿著一個方向流動,不允許反向倒流.
（2）它的用途是：安裝在泵的出口,可防止系統(tǒng)壓力沖擊對泵的影響,另外,泵不工作時,可防止系統(tǒng)油液經(jīng)泵倒流回油箱,單向閥還可用來分隔油路,防止干擾.單向閥與其他閥組合便可組成復(fù)合閥.單向閥與其他閥可組成液控復(fù)合閥
（3）對于普通液控單向閥,當(dāng)控制口無控制壓力時,其作用與普通單向閥一樣；當(dāng)控制口有控制壓力時,通油口接通,油液便可在兩個方向自由流動.
（4）它的主要用途是：可對液壓缸進(jìn)行鎖閉；作立式液壓缸的支承閥；起保壓作用.
原裝M-3SED10UK13/350CG24N9K4大量現(xiàn)貨

單向閥是氣流只能一個方向流動而不能反向流動的方向控制閥。其工作原理與液壓單向閥一樣。壓縮空氣從P口進(jìn)入，克服彈簧力和摩擦力使單向閥閥口開啟，壓縮空氣從P流至A；當(dāng)P口無壓縮空氣時，在彈簧力和A口(腔)余氣力作用下；閥口處于關(guān)閉狀 態(tài)，使從A至P氣流不通。單向閥應(yīng)用于不允許氣流反向流動的場合，如空壓機(jī)向氣罐充氣 時，在空壓機(jī)與氣罐之間設(shè)置一單向閥，當(dāng)空壓機(jī)停止工作時，可防止氣罐中的壓縮空氣回流 到空壓機(jī)。單向閥還常與節(jié)流閥、順序閥等組合成單向節(jié)流閥、單向順序閥使用。

原裝M-3SED10UK13/350CG24N9K4大量現(xiàn)貨G2CrNi2Mo滲碳鋼制圓錐滾子軸承外圈，在使用過程中出現(xiàn)開裂現(xiàn)象。由于該軸承產(chǎn)量高，使用部位關(guān)鍵，為避免再出現(xiàn)同樣的開裂現(xiàn)象，必須找出其產(chǎn)生失效的原因。本文通過宏觀分析、微觀分析、掃描電鏡的分析，就開裂的原因進(jìn)行了討論。滲碳鋼制圓錐滾子軸承外圈開裂失效分析1.外圈開裂宏觀特征失效的滲碳鋼制圓錐滾子軸承外圈外表面除有一條貫通的、且與軸線平行的開裂裂紋外，還有兩條源自大裂縫的散射細(xì)裂紋。除兩端及中部非工作區(qū)外，套圈上有兩道大的磨損區(qū)，呈不同的亮白色光澤帶。
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