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永順研磨和冷卻對密封面都非常重要

發布時間:2021-12-17 11:54:31 人氣:98014 來源:

  在研磨過程中,閥門制造的密封面是一個常用的整理方法,可以使永順機械密封摩擦端(duan)面尺寸精(jing)(jing)度(du)(du)(du)提(ti)(ti)高,閥門的密(mi)封(feng)面,幾何(he)粗(cu)糙(cao)度(du)(du)(du)和表(biao)面粗(cu)糙(cao)度(du)(du)(du),但不(bu)能提(ti)(ti)高密(mi)封(feng)表(biao)面的相互(hu)位置精(jing)(jing)度(du)(du)(du)。


  永順機械密封面研磨包括五個方面的基本原理:研磨運動、研磨工藝、研磨速度、研磨壓力和研磨余量。研磨過程好一起研究密封面,隨著對永順機械密封研(yan)(yan)(yan)究的(de)(de)復雜(za)面(mian)(mian)(mian)(mian)(mian),之間(jian)的(de)(de)表面(mian)(mian)(mian)(mian)(mian)和(he)密(mi)封磨(mo)(mo)料(liao)(liao)磨(mo)(mo)具研(yan)(yan)(yan)究相(xiang)(xiang)對(dui)運(yun)(yun)(yun)(yun)動(dong)(dong)時,密(mi)封圈表面(mian)(mian)(mian)(mian)(mian),磨(mo)(mo)料(liao)(liao)磨(mo)(mo)具研(yan)(yan)(yan)究部分(fen)和(he)密(mi)封面(mian)(mian)(mian)(mian)(mian)之間(jian)的(de)(de)滑(hua)動(dong)(dong)或(huo)滾動(dong)(dong),切(qie)斷密(mi)封圈上薄薄的(de)(de)一(yi)層(ceng)金屬表面(mian)(mian)(mian)(mian)(mian)。密(mi)封凸峰部分(fen)的(de)(de)圈,表面(mian)(mian)(mian)(mian)(mian)研(yan)(yan)(yan)磨(mo)(mo),然后(hou)逐(zhu)漸達到(dao)所要求的(de)(de)幾何形(xing)狀(zhuang)。不(bu)僅(jin)是(shi)金屬磨(mo)(mo)料(liao)(liao)的(de)(de)研(yan)(yan)(yan)磨(mo)(mo)加工(gong)(gong),以及化學作用。研(yan)(yan)(yan)磨(mo)(mo)油可(ke)使(shi)加工(gong)(gong)表面(mian)(mian)(mian)(mian)(mian)形(xing)成的(de)(de)氧化膜,從(cong)而(er)加快研(yan)(yan)(yan)磨(mo)(mo)過程(cheng)。地面(mian)(mian)(mian)(mian)(mian)運(yun)(yun)(yun)(yun)動(dong)(dong)相(xiang)(xiang)對(dui)運(yun)(yun)(yun)(yun)動(dong)(dong)的(de)(de)表面(mian)(mian)(mian)(mian)(mian)和(he)密(mi)封圈密(mi)封圈的(de)(de)研(yan)(yan)(yan)究,對(dui)每個(ge)點(dian)的(de)(de)表面(mian)(mian)(mian)(mian)(mian)上的(de)(de)道路和(he)相(xiang)(xiang)對(dui)滑(hua)動(dong)(dong)的(de)(de)研(yan)(yan)(yan)究應該是(shi)一(yi)樣的(de)(de)。和(he)相(xiang)(xiang)對(dui)運(yun)(yun)(yun)(yun)動(dong)(dong)方向改(gai)變。改(gai)變密(mi)封環(huan)(huan)內的(de)(de)每個(ge)粒(li)子的(de)(de)表面(mian)(mian)(mian)(mian)(mian)上運(yun)(yun)(yun)(yun)動(dong)(dong)的(de)(de)方向不(bu)會重復他們的(de)(de)軌跡,以避免磨(mo)(mo)損明顯增加了(le)密(mi)封環(huan)(huan)的(de)(de)表面(mian)(mian)(mian)(mian)(mian)粗糙度(du)。此外(wai),運(yun)(yun)(yun)(yun)動(dong)(dong)方向的(de)(de)改(gai)變不(bu)能使(shi)磨(mo)(mo)粒(li)分(fen)布比較均(jun)勻,且均(jun)勻切(qie)斷金屬密(mi)封環(huan)(huan)的(de)(de)表面(mian)(mian)(mian)(mian)(mian)。

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  永順機械密封研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)是利用涂敷或者壓(ya)(ya)嵌游離(li)磨(mo)(mo)(mo)(mo)粒(li)與(yu)(yu)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)劑的(de)混合(he)物(wu),在(zai)一定剛(gang)性的(de)軟質(zhi)研(yan)(yan)(yan)(yan)(yan)具(ju)(ju)上,通過(guo)研(yan)(yan)(yan)(yan)(yan)具(ju)(ju)與(yu)(yu)工(gong)(gong)件(jian)(jian)向磨(mo)(mo)(mo)(mo)料(liao)施加(jia)(jia)一定壓(ya)(ya)力(li),磨(mo)(mo)(mo)(mo)料(liao)滾動與(yu)(yu)滑(hua)(hua)動,從被(bei)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)工(gong)(gong)件(jian)(jian)上去(qu)除(chu)極薄的(de)余量,以(yi)提高工(gong)(gong)件(jian)(jian)的(de)精(jing)度和降低表面(mian)粗(cu)糙度值得加(jia)(jia)工(gong)(gong)方法。按研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)時(shi)有無研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)液可(ke)分為干研(yan)(yan)(yan)(yan)(yan)與(yu)(yu)濕(shi)研(yan)(yan)(yan)(yan)(yan)。研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)過(guo)程(cheng)中(zhong),在(zai)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)壓(ya)(ya)力(li)下(xia)(xia),眾多(duo)的(de)磨(mo)(mo)(mo)(mo)料(liao)微粒(li)進行(xing)微量切削(xue)(xue)。對(dui)工(gong)(gong)件(jian)(jian)表面(mian)進行(xing)擠(ji)壓(ya)(ya)、刻(ke)劃(hua)、滑(hua)(hua)擦;在(zai)研(yan)(yan)(yan)(yan)(yan)具(ju)(ju)運(yun)動中(zhong)當研(yan)(yan)(yan)(yan)(yan)具(ju)(ju)壓(ya)(ya)嵌的(de)磨(mo)(mo)(mo)(mo)粒(li)脫落后及液中(zhong)磨(mo)(mo)(mo)(mo)粒(li)相對(dui)工(gong)(gong)件(jian)(jian)發(fa)生(sheng)滾動。研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)過(guo)程(cheng)中(zhong),在(zai)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)壓(ya)(ya)力(li)的(de)作(zuo)用下(xia)(xia),眾多(duo)磨(mo)(mo)(mo)(mo)粒(li)進行(xing)微量切削(xue)(xue),同時(shi)被(bei)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)表面(mian)發(fa)生(sheng)微小(xiao)(xiao)起(qi)(qi)伏的(de)塑性變形,并且被(bei)加(jia)(jia)入的(de)諸(zhu)如硬(ying)脂酸、油酸、脂肪酸等活性物(wu)質(zhi)與(yu)(yu)被(bei)研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)表面(mian)起(qi)(qi)化學作(zuo)用。隨著研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)加(jia)(jia)工(gong)(gong)的(de)進行(xing),磨(mo)(mo)(mo)(mo)具(ju)(ju)與(yu)(yu)工(gong)(gong)件(jian)(jian)表面(mian)間(jian)更趨貼(tie)近,其(qi)間(jian)充滿了微屑與(yu)(yu)破碎磨(mo)(mo)(mo)(mo)料(liao)的(de)碎渣(zha),堵(du)塞(sai)了研(yan)(yan)(yan)(yan)(yan)具(ju)(ju)表面(mian),對(dui)工(gong)(gong)件(jian)(jian)表面(mian)起(qi)(qi)滑(hua)(hua)擦作(zuo)用。所以(yi),研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)加(jia)(jia)工(gong)(gong)的(de)實質(zhi)是磨(mo)(mo)(mo)(mo)粒(li)的(de)微量切削(xue)(xue)、研(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)表面(mian)微小(xiao)(xiao)起(qi)(qi)伏的(de)塑性流動、表面(mian)活性物(wu)質(zhi)的(de)化學作(zuo)用及研(yan)(yan)(yan)(yan)(yan)具(ju)(ju)堵(du)塞(sai)物(wu)與(yu)(yu)工(gong)(gong)件(jian)(jian)表面(mian)滑(hua)(hua)擦作(zuo)用的(de)綜合(he)結果。


  為了不讓泵水通過軸與密封間隙泄漏,由出口冷凝泵或在鹽水中的母管引至密封水。給水泵是一種具有一定溫度、高溫的水通過泵軸或泵體金屬容器用永順機械密封將熱量傳給軸承,使軸承溫度(du)升(sheng)高。為了控制傳熱,所以密封的水也起到(dao)冷卻(que)作用。


  永順機械密封直接冷卻就是冷卻液體直接和密封端面接觸達到冷卻的目的。沖洗實際上也是直接冷卻的一種方式,沖洗方式中通過管路連接換熱器將冷卻后的沖洗液引入密封腔進行直接冷卻。還有一種直接冷卻就是在永順機械密封低壓(ya)側(大氣)將清水、蒸(zheng)汽(qi)等冷卻流(liu)(liu)體(ti)直接引入密封端(duan)泄露(lu)處的一種(zhong)冷卻方式,也稱急(ji)冷,急(ji)冷不僅冷卻*,還能將密封端(duan)面(mian)周圍(wei)的雜質(zhi)及(ji)泄露(lu)液(ye)帶(dai)走(zou),急(ji)冷液(ye)其壓(ya)力比密封介質(zhi)壓(ya)力低。急(ji)冷液(ye)應盡量采用(yong)軟(ruan)水,以(yi)防止(zhi)水垢(gou)產生(sheng)破壞密封端(duan)面(mian)。當密封流(liu)(liu)體(ti)為易凝固(gu)、易結晶時(shi),可用(yong)蒸(zheng)汽(qi)、溶劑等防止(zhi)流(liu)(liu)體(ti)凝結。