哈威HAWE多路閥其鑄件要求表面光潔

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哈威HAWE多路閥其鑄件要求表面光潔

哈威HAWE多(duo)路閥(fa)對于(yu)流量有大有小的可供選(xuan)擇方(fang)案很(hen)多(duo)，例如：直(zhi)流相加(jia)減(jian)（多(duo)臺(tai)定(ding)量泵并聯），全交(jiao)流（變頻電(dian)機驅動定(ding)量泵，變排量泵），直(zhi)流加(jia)交(jiao)流（幾臺(tai)定(ding)量泵，加(jia)變排量泵），加(jia)蓄能器，等等，恒(heng)壓(ya)恒(heng)功率的情況如前所說

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哈威HAWE多路閥其鑄件要求表面光潔

哈威HAWE多路閥對于(yu)流(liu)(liu)(liu)(liu)量(liang)有大有小的(de)可供(gong)選擇方案很(hen)多(duo)，例(li)(li)如(ru)：直流(liu)(liu)(liu)(liu)相(xiang)加(jia)(jia)(jia)(jia)減（多(duo)臺定量(liang)泵(beng)(beng)并聯），全(quan)交流(liu)(liu)(liu)(liu)（變(bian)頻(pin)電(dian)機驅動定量(liang)泵(beng)(beng)，變(bian)排(pai)(pai)量(liang)泵(beng)(beng)），直流(liu)(liu)(liu)(liu)加(jia)(jia)(jia)(jia)交流(liu)(liu)(liu)(liu)（幾臺定量(liang)泵(beng)(beng)，加(jia)(jia)(jia)(jia)變(bian)排(pai)(pai)量(liang)泵(beng)(beng)），加(jia)(jia)(jia)(jia)蓄能(neng)器，等等，恒壓(ya)(ya)(ya)(ya)恒功率的(de)情況如(ru)前所說。對于(yu)壓(ya)(ya)(ya)(ya)力(li)變(bian)化(hua)很(hen)大的(de)，辦法也很(hen)多(duo)，但zui后(hou)要與流(liu)(liu)(liu)(liu)量(liang)變(bian)化(hua)結合起來考慮(lv)。例(li)(li)如(ru)，多(duo)級壓(ya)(ya)(ya)(ya)力(li)切換，電(dian)液比例(li)(li)閥，比例(li)(li)壓(ya)(ya)(ya)(ya)力(li)泵(beng)(beng)，加(jia)(jia)(jia)(jia)增壓(ya)(ya)(ya)(ya)器，哈威(wei)HAWE多(duo)路閥加(jia)(jia)(jia)(jia)電(dian)動高壓(ya)(ya)(ya)(ya)泵(beng)(beng)作為(wei)增壓(ya)(ya)(ya)(ya)泵(beng)(beng)（這兩個(ge)都是(shi)局部(bu)增壓(ya)(ya)(ya)(ya)），等等。用的(de)多(duo)數是(shi)帶壓(ya)(ya)(ya)(ya)力(li)補(bu)償變(bian)量(liang)泵(beng)(beng)，此泵(beng)(beng)的(de)特點是(shi)泵(beng)(beng)出(chu)(chu)口的(de)流(liu)(liu)(liu)(liu)量(liang)隨(sui)出(chu)(chu)口壓(ya)(ya)(ya)(ya)力(li)的(de)大小在(zai)一(yi)(yi)定范圍(wei)內按恒功率曲(qu)線變(bian)化(hua)，即P=pq。哈威(wei)HAWE多(duo)路閥而恒壓(ya)(ya)(ya)(ya)變(bian)量(liang)泵(beng)(beng)則是(shi)：在(zai)輸出(chu)(chu)壓(ya)(ya)(ya)(ya)力(li)小于(yu)設定壓(ya)(ya)(ya)(ya)力(li)時(shi)，泵(beng)(beng)全(quan)排(pai)(pai)量(liang)輸出(chu)(chu)，屬(shu)于(yu)定量(liang)泵(beng)(beng)，一(yi)(yi)旦輸出(chu)(chu)壓(ya)(ya)(ya)(ya)力(li)達到或超過設定壓(ya)(ya)(ya)(ya)力(li)，就會自動調節(jie)調節(jie)泵(beng)(beng)流(liu)(liu)(liu)(liu)量(liang)，以保證恒壓(ya)(ya)(ya)(ya)力(li)。

哈威HAWE多路閥由于(yu)閥(fa)(fa)門(men)(men)材料(liao)(liao)的各(ge)類繁多(duo)(duo)(duo)(duo)，多(duo)(duo)(duo)(duo)路(lu)閥(fa)(fa)除各(ge)種(zhong)鑄鐵、碳素(su)鋼(gang)外，其大(da)部分高(gao)(gao)強、耐(nai)腐蝕和(he)高(gao)(gao)硬材料(liao)(liao)的切(qie)削(xue)性(xing)能都很差，很難(nan)使零(ling)(ling)件(jian)達(da)到規(gui)定(ding)的加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)精(jing)(jing)(jing)度(du)(du)(du)和(he)表(biao)(biao)面(mian)(mian)(mian)粗(cu)糙(cao)度(du)(du)(du)。多(duo)(duo)(duo)(duo)路(lu)閥(fa)(fa)而閥(fa)(fa)門(men)(men)密(mi)封(feng)面(mian)(mian)(mian)的幾何型狀精(jing)(jing)(jing)度(du)(du)(du)和(he)表(biao)(biao)面(mian)(mian)(mian)粗(cu)糙(cao)度(du)(du)(du)的要(yao)求(qiu)(qiu)很高(gao)(gao)，因(yin)此更(geng)增加(jia)(jia)(jia)(jia)(jia)了(le)閥(fa)(fa)門(men)(men)機械加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)難(nan)度(du)(du)(du)。同時，閥(fa)(fa)門(men)(men)材料(liao)(liao)的切(qie)削(xue)性(xing)能差，哈(ha)(ha)威(wei)(wei)HAWE多(duo)(duo)(duo)(duo)路(lu)閥(fa)(fa)又給閥(fa)(fa)門(men)(men)的加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)方法、刀具材料(liao)(liao)、切(qie)削(xue)用量、工(gong)(gong)(gong)藝裝備等方面(mian)(mian)(mian)帶來了(le)很多(duo)(duo)(duo)(duo)新的問題閥(fa)(fa)門(men)(men)主(zhu)要(yao)零(ling)(ling)件(jian)的結構、形狀比(bi)較(jiao)復雜，多(duo)(duo)(duo)(duo)路(lu)閥(fa)(fa)有些零(ling)(ling)件(jian)屬壁薄、細長件(jian)，剛性(xing)差。在(zai)機床上加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)時，定(ding)位(wei)和(he)裝夾都比(bi)較(jiao)困難(nan)，因(yin)此往(wang)(wang)往(wang)(wang)需(xu)要(yao)復雜的夾具。有的閥(fa)(fa)門(men)(men)零(ling)(ling)件(jian)，定(ding)位(wei)基(ji)面(mian)(mian)(mian)的精(jing)(jing)(jing)度(du)(du)(du)較(jiao)低(di)，表(biao)(biao)面(mian)(mian)(mian)粗(cu)糙(cao)度(du)(du)(du)較(jiao)高(gao)(gao)，哈(ha)(ha)威(wei)(wei)HAWE多(duo)(duo)(duo)(duo)路(lu)閥(fa)(fa)有時甚至采用非加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)表(biao)(biao)面(mian)(mian)(mian)定(ding)位(wei)。多(duo)(duo)(duo)(duo)路(lu)閥(fa)(fa)而被加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)密(mi)封(feng)面(mian)(mian)(mian)等部位(wei)的精(jing)(jing)(jing)度(du)(du)(du)和(he)表(biao)(biao)面(mian)(mian)(mian)粗(cu)糙(cao)度(du)(du)(du)要(yao)求(qiu)(qiu)都很高(gao)(gao)，故(gu)得難(nan)保證加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)質量。因(yin)此，為滿(man)足工(gong)(gong)(gong)藝上的需(xu)要(yao)，多(duo)(duo)(duo)(duo)路(lu)閥(fa)(fa)往(wang)(wang)往(wang)(wang)須提高(gao)(gao)定(ding)位(wei)基(ji)面(mian)(mian)(mian)的精(jing)(jing)(jing)度(du)(du)(du)和(he)降低(di)表(biao)(biao)面(mian)(mian)(mian)粗(cu)糙(cao)度(du)(du)(du)，哈(ha)(ha)威(wei)(wei)HAWE多(duo)(duo)(duo)(duo)路(lu)閥(fa)(fa)或在(zai)非加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)表(biao)(biao)面(mian)(mian)(mian)上加(jia)(jia)(jia)(jia)(jia)工(gong)(gong)(gong)出定(ding)位(wei)基(ji)面(mian)(mian)(mian)，這就增加(jia)(jia)(jia)(jia)(jia)了(le)閥(fa)(fa)門(men)(men)制造工(gong)(gong)(gong)藝的復雜性(xing)。

哈威HAWE多路閥其鑄件要求表面光潔