掃一掃,加微信
聯系客服,馬上詢價
發布時間:2021-12-17 11:54:31 人氣:97912 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,可以使紅毛鎮機械密封摩擦端面(mian)尺寸精度提(ti)高,閥門的密封(feng)面(mian),幾何粗糙度和表(biao)(biao)面(mian)粗糙度,但(dan)不能(neng)提(ti)高密封(feng)表(biao)(biao)面(mian)的相互(hu)位置精度。
紅毛鎮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,隨著對紅毛鎮機械密封研(yan)(yan)究(jiu)(jiu)的(de)復雜面(mian),之(zhi)間的(de)表(biao)面(mian)和密(mi)(mi)(mi)封磨(mo)(mo)料磨(mo)(mo)具(ju)研(yan)(yan)究(jiu)(jiu)相(xiang)(xiang)對(dui)(dui)運(yun)動(dong)時,密(mi)(mi)(mi)封圈(quan)表(biao)面(mian),磨(mo)(mo)料磨(mo)(mo)具(ju)研(yan)(yan)究(jiu)(jiu)部分和密(mi)(mi)(mi)封面(mian)之(zhi)間的(de)滑動(dong)或滾動(dong),切斷密(mi)(mi)(mi)封圈(quan)上(shang)(shang)薄薄的(de)一(yi)層金(jin)屬(shu)表(biao)面(mian)。密(mi)(mi)(mi)封凸峰部分的(de)圈(quan),表(biao)面(mian)研(yan)(yan)磨(mo)(mo),然(ran)后(hou)逐漸達到所要求的(de)幾(ji)何形狀。不(bu)僅是金(jin)屬(shu)磨(mo)(mo)料的(de)研(yan)(yan)磨(mo)(mo)加工(gong),以(yi)及化學作用。研(yan)(yan)磨(mo)(mo)油可使加工(gong)表(biao)面(mian)形成的(de)氧化膜(mo),從而加快(kuai)研(yan)(yan)磨(mo)(mo)過(guo)程(cheng)。地面(mian)運(yun)動(dong)相(xiang)(xiang)對(dui)(dui)運(yun)動(dong)的(de)表(biao)面(mian)和密(mi)(mi)(mi)封圈(quan)密(mi)(mi)(mi)封圈(quan)的(de)研(yan)(yan)究(jiu)(jiu),對(dui)(dui)每個點的(de)表(biao)面(mian)上(shang)(shang)的(de)道路和相(xiang)(xiang)對(dui)(dui)滑動(dong)的(de)研(yan)(yan)究(jiu)(jiu)應(ying)該(gai)是一(yi)樣的(de)。和相(xiang)(xiang)對(dui)(dui)運(yun)動(dong)方向(xiang)改(gai)變。改(gai)變密(mi)(mi)(mi)封環內的(de)每個粒子(zi)的(de)表(biao)面(mian)上(shang)(shang)運(yun)動(dong)的(de)方向(xiang)不(bu)會重復他們的(de)軌跡,以(yi)避免磨(mo)(mo)損明顯(xian)增加了密(mi)(mi)(mi)封環的(de)表(biao)面(mian)粗(cu)糙度。此(ci)外,運(yun)動(dong)方向(xiang)的(de)改(gai)變不(bu)能使磨(mo)(mo)粒分布比較均(jun)勻,且均(jun)勻切斷金(jin)屬(shu)密(mi)(mi)(mi)封環的(de)表(biao)面(mian)。
紅毛鎮機械密封研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)是利用涂敷或者壓(ya)嵌游離磨(mo)(mo)(mo)粒(li)(li)與(yu)(yu)(yu)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)劑的(de)(de)(de)(de)混合(he)物,在一(yi)定剛(gang)性(xing)(xing)(xing)的(de)(de)(de)(de)軟質研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)具上,通過研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)具與(yu)(yu)(yu)工(gong)(gong)(gong)件(jian)向磨(mo)(mo)(mo)料(liao)施加一(yi)定壓(ya)力,磨(mo)(mo)(mo)料(liao)滾動與(yu)(yu)(yu)滑(hua)(hua)動,從(cong)被(bei)(bei)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)工(gong)(gong)(gong)件(jian)上去除極薄的(de)(de)(de)(de)余量(liang),以提高(gao)工(gong)(gong)(gong)件(jian)的(de)(de)(de)(de)精度和(he)降低表(biao)(biao)面(mian)(mian)粗糙(cao)度值得加工(gong)(gong)(gong)方法。按研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)時有無研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)液(ye)可分為干(gan)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)與(yu)(yu)(yu)濕(shi)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)。研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)過程(cheng)中(zhong),在研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)壓(ya)力下,眾多的(de)(de)(de)(de)磨(mo)(mo)(mo)料(liao)微粒(li)(li)進行(xing)微量(liang)切(qie)削。對工(gong)(gong)(gong)件(jian)表(biao)(biao)面(mian)(mian)進行(xing)擠壓(ya)、刻劃(hua)、滑(hua)(hua)擦(ca);在研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)具運動中(zhong)當(dang)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)具壓(ya)嵌的(de)(de)(de)(de)磨(mo)(mo)(mo)粒(li)(li)脫落后及(ji)液(ye)中(zhong)磨(mo)(mo)(mo)粒(li)(li)相對工(gong)(gong)(gong)件(jian)發生滾動。研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)過程(cheng)中(zhong),在研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)壓(ya)力的(de)(de)(de)(de)作用下,眾多磨(mo)(mo)(mo)粒(li)(li)進行(xing)微量(liang)切(qie)削,同(tong)時被(bei)(bei)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)表(biao)(biao)面(mian)(mian)發生微小(xiao)起伏(fu)的(de)(de)(de)(de)塑(su)性(xing)(xing)(xing)變(bian)形,并且被(bei)(bei)加入的(de)(de)(de)(de)諸如(ru)硬脂酸、油酸、脂肪酸等活(huo)(huo)性(xing)(xing)(xing)物質與(yu)(yu)(yu)被(bei)(bei)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)表(biao)(biao)面(mian)(mian)起化學作用。隨著研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)加工(gong)(gong)(gong)的(de)(de)(de)(de)進行(xing),磨(mo)(mo)(mo)具與(yu)(yu)(yu)工(gong)(gong)(gong)件(jian)表(biao)(biao)面(mian)(mian)間更趨貼近,其間充滿(man)了微屑(xie)與(yu)(yu)(yu)破碎磨(mo)(mo)(mo)料(liao)的(de)(de)(de)(de)碎渣,堵塞了研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)具表(biao)(biao)面(mian)(mian),對工(gong)(gong)(gong)件(jian)表(biao)(biao)面(mian)(mian)起滑(hua)(hua)擦(ca)作用。所以,研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)加工(gong)(gong)(gong)的(de)(de)(de)(de)實質是磨(mo)(mo)(mo)粒(li)(li)的(de)(de)(de)(de)微量(liang)切(qie)削、研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)磨(mo)(mo)(mo)表(biao)(biao)面(mian)(mian)微小(xiao)起伏(fu)的(de)(de)(de)(de)塑(su)性(xing)(xing)(xing)流動、表(biao)(biao)面(mian)(mian)活(huo)(huo)性(xing)(xing)(xing)物質的(de)(de)(de)(de)化學作用及(ji)研(yan)(yan)(yan)(yan)(yan)(yan)(yan)(yan)具堵塞物與(yu)(yu)(yu)工(gong)(gong)(gong)件(jian)表(biao)(biao)面(mian)(mian)滑(hua)(hua)擦(ca)作用的(de)(de)(de)(de)綜合(he)結果(guo)。
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紅毛鎮機械密封將熱量傳(chuan)給軸承,使軸承溫度(du)升(sheng)高。為了控(kong)制傳(chuan)熱,所以密封的水也(ye)起到冷卻(que)作用。
紅毛鎮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紅毛鎮機械密封低(di)壓側(大氣)將清水、蒸汽(qi)(qi)等(deng)冷(leng)卻流(liu)體(ti)直(zhi)接引入密(mi)封(feng)端泄(xie)露(lu)處的(de)一種冷(leng)卻方式,也(ye)稱急(ji)冷(leng),急(ji)冷(leng)不僅冷(leng)卻*,還能將密(mi)封(feng)端面周(zhou)圍的(de)雜(za)質(zhi)及泄(xie)露(lu)液帶走,急(ji)冷(leng)液其壓力比密(mi)封(feng)介(jie)質(zhi)壓力低(di)。急(ji)冷(leng)液應盡(jin)量采用軟水,以防止水垢(gou)產生破壞密(mi)封(feng)端面。當密(mi)封(feng)流(liu)體(ti)為易凝(ning)固、易結晶時,可用蒸汽(qi)(qi)、溶劑等(deng)防止流(liu)體(ti)凝(ning)結。