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六合研磨和冷卻對密封面都非常重要

發布時(shi)間:2021-12-17 11:54:31 人氣(qi):93733 來源(yuan):

  在研磨過程中,閥門制造的密封面是一個常用的整理方法,可以使六合機械密封摩擦端面(mian)尺寸精度提高(gao)(gao),閥門的(de)密封面(mian),幾何粗糙(cao)度和(he)表面(mian)粗糙(cao)度,但不能提高(gao)(gao)密封表面(mian)的(de)相互位置精度。


  六合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,隨著對六合機械密封研究(jiu)的(de)(de)(de)復雜面(mian)(mian),之間(jian)的(de)(de)(de)表面(mian)(mian)和(he)密封(feng)磨(mo)料(liao)(liao)(liao)磨(mo)具研究(jiu)相(xiang)對(dui)(dui)運(yun)動時(shi),密封(feng)圈表面(mian)(mian),磨(mo)料(liao)(liao)(liao)磨(mo)具研究(jiu)部分(fen)和(he)密封(feng)面(mian)(mian)之間(jian)的(de)(de)(de)滑動或滾動,切斷密封(feng)圈上(shang)薄薄的(de)(de)(de)一層金屬表面(mian)(mian)。密封(feng)凸峰部分(fen)的(de)(de)(de)圈,表面(mian)(mian)研磨(mo),然(ran)后逐漸達到所要求(qiu)的(de)(de)(de)幾何形狀(zhuang)。不(bu)僅是金屬磨(mo)料(liao)(liao)(liao)的(de)(de)(de)研磨(mo)加工,以及化學作(zuo)用。研磨(mo)油可使加工表面(mian)(mian)形成的(de)(de)(de)氧化膜,從而加快研磨(mo)過(guo)程。地面(mian)(mian)運(yun)動相(xiang)對(dui)(dui)運(yun)動的(de)(de)(de)表面(mian)(mian)和(he)密封(feng)圈密封(feng)圈的(de)(de)(de)研究(jiu),對(dui)(dui)每(mei)(mei)個點(dian)的(de)(de)(de)表面(mian)(mian)上(shang)的(de)(de)(de)道路和(he)相(xiang)對(dui)(dui)滑動的(de)(de)(de)研究(jiu)應該是一樣的(de)(de)(de)。和(he)相(xiang)對(dui)(dui)運(yun)動方向改變。改變密封(feng)環內(nei)的(de)(de)(de)每(mei)(mei)個粒(li)子的(de)(de)(de)表面(mian)(mian)上(shang)運(yun)動的(de)(de)(de)方向不(bu)會重復他們的(de)(de)(de)軌跡(ji),以避(bi)免磨(mo)損(sun)明顯增(zeng)加了(le)密封(feng)環的(de)(de)(de)表面(mian)(mian)粗糙度。此外(wai),運(yun)動方向的(de)(de)(de)改變不(bu)能使磨(mo)粒(li)分(fen)布比(bi)較(jiao)均勻,且均勻切斷金屬密封(feng)環的(de)(de)(de)表面(mian)(mian)。

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  六合機械密封研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)是利用(yong)涂敷或者壓(ya)(ya)嵌(qian)游離(li)磨(mo)(mo)(mo)(mo)(mo)粒(li)與研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)劑的(de)(de)(de)混(hun)合(he)物(wu),在一定(ding)剛性的(de)(de)(de)軟質(zhi)研(yan)(yan)(yan)(yan)具(ju)上,通過研(yan)(yan)(yan)(yan)具(ju)與工(gong)(gong)(gong)(gong)件(jian)(jian)向磨(mo)(mo)(mo)(mo)(mo)料(liao)施加(jia)(jia)一定(ding)壓(ya)(ya)力(li),磨(mo)(mo)(mo)(mo)(mo)料(liao)滾動(dong)(dong)與滑動(dong)(dong),從被研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)工(gong)(gong)(gong)(gong)件(jian)(jian)上去除極(ji)薄的(de)(de)(de)余量(liang),以(yi)提高工(gong)(gong)(gong)(gong)件(jian)(jian)的(de)(de)(de)精(jing)度(du)和降低表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)粗糙(cao)度(du)值(zhi)得加(jia)(jia)工(gong)(gong)(gong)(gong)方(fang)法。按研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)時有無研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)液(ye)可分為干研(yan)(yan)(yan)(yan)與濕研(yan)(yan)(yan)(yan)。研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)過程(cheng)中,在研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)壓(ya)(ya)力(li)下(xia)(xia),眾(zhong)多(duo)的(de)(de)(de)磨(mo)(mo)(mo)(mo)(mo)料(liao)微(wei)粒(li)進(jin)行(xing)微(wei)量(liang)切(qie)削(xue)。對工(gong)(gong)(gong)(gong)件(jian)(jian)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)進(jin)行(xing)擠壓(ya)(ya)、刻(ke)劃、滑擦(ca);在研(yan)(yan)(yan)(yan)具(ju)運動(dong)(dong)中當(dang)研(yan)(yan)(yan)(yan)具(ju)壓(ya)(ya)嵌(qian)的(de)(de)(de)磨(mo)(mo)(mo)(mo)(mo)粒(li)脫落(luo)后(hou)及(ji)液(ye)中磨(mo)(mo)(mo)(mo)(mo)粒(li)相對工(gong)(gong)(gong)(gong)件(jian)(jian)發(fa)生(sheng)滾動(dong)(dong)。研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)過程(cheng)中,在研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)壓(ya)(ya)力(li)的(de)(de)(de)作(zuo)用(yong)下(xia)(xia),眾(zhong)多(duo)磨(mo)(mo)(mo)(mo)(mo)粒(li)進(jin)行(xing)微(wei)量(liang)切(qie)削(xue),同(tong)時被研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)發(fa)生(sheng)微(wei)小(xiao)起(qi)(qi)伏的(de)(de)(de)塑性變(bian)形(xing),并且被加(jia)(jia)入的(de)(de)(de)諸(zhu)如硬脂(zhi)酸、油酸、脂(zhi)肪酸等活(huo)(huo)性物(wu)質(zhi)與被研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)起(qi)(qi)化學作(zuo)用(yong)。隨著研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)加(jia)(jia)工(gong)(gong)(gong)(gong)的(de)(de)(de)進(jin)行(xing),磨(mo)(mo)(mo)(mo)(mo)具(ju)與工(gong)(gong)(gong)(gong)件(jian)(jian)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)間(jian)(jian)更趨貼近,其間(jian)(jian)充滿了微(wei)屑與破碎(sui)磨(mo)(mo)(mo)(mo)(mo)料(liao)的(de)(de)(de)碎(sui)渣(zha),堵塞了研(yan)(yan)(yan)(yan)具(ju)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian),對工(gong)(gong)(gong)(gong)件(jian)(jian)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)起(qi)(qi)滑擦(ca)作(zuo)用(yong)。所以(yi),研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)加(jia)(jia)工(gong)(gong)(gong)(gong)的(de)(de)(de)實質(zhi)是磨(mo)(mo)(mo)(mo)(mo)粒(li)的(de)(de)(de)微(wei)量(liang)切(qie)削(xue)、研(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)(mo)(mo)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)微(wei)小(xiao)起(qi)(qi)伏的(de)(de)(de)塑性流動(dong)(dong)、表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)活(huo)(huo)性物(wu)質(zhi)的(de)(de)(de)化學作(zuo)用(yong)及(ji)研(yan)(yan)(yan)(yan)具(ju)堵塞物(wu)與工(gong)(gong)(gong)(gong)件(jian)(jian)表(biao)(biao)(biao)面(mian)(mian)(mian)(mian)滑擦(ca)作(zuo)用(yong)的(de)(de)(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六合機械密封將熱量傳(chuan)給軸承,使軸承溫度升高。為了控制傳(chuan)熱,所以(yi)密(mi)封的水也(ye)起(qi)到(dao)冷卻(que)作用。


  六合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六合機械密封低(di)壓側(大氣)將清水、蒸汽等冷(leng)(leng)卻流體直接引入密(mi)封(feng)(feng)端(duan)(duan)泄露處的(de)一(yi)種冷(leng)(leng)卻方式(shi),也(ye)稱急(ji)(ji)冷(leng)(leng),急(ji)(ji)冷(leng)(leng)不僅冷(leng)(leng)卻*,還(huan)能(neng)將密(mi)封(feng)(feng)端(duan)(duan)面周(zhou)圍的(de)雜(za)質及泄露液帶走,急(ji)(ji)冷(leng)(leng)液其壓力(li)比密(mi)封(feng)(feng)介質壓力(li)低(di)。急(ji)(ji)冷(leng)(leng)液應盡量采用軟水,以(yi)防止水垢產生破壞密(mi)封(feng)(feng)端(duan)(duan)面。當密(mi)封(feng)(feng)流體為易(yi)凝(ning)固、易(yi)結(jie)晶時,可(ke)用蒸汽、溶劑等防止流體凝(ning)結(jie)。