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法蘭(lan)接(jie)(jie)頭是(shi)由法蘭(lan)、密封(feng)墊片及連(lian)接(jie)(jie)螺栓三(san)種(zhong)元件(jian)組成的(de)一個(ge)承壓(ya)管道連(lian)接(jie)(jie)件(jian)。在法蘭(lan)密封(feng)接(jie)(jie)頭中，墊片是(shi)最主(zhu)要的(de)密封(feng)元件(jian)。對于非(fei)金(jin)屬墊片來說，法蘭(lan)接(jie)(jie)頭的(de)密封(feng)是(shi)通(tong)過擰緊(jin)螺栓，使法蘭(lan)與墊片接(jie)(jie)觸表面及其墊片內部(bu)造成較(jiao)大的(de)壓(ya)緊(jin)應力，從而(er)一方面使墊片表面與法蘭(lan)表面緊(jin)密貼合(he)以填滿法蘭(lan)表面...
不(bu)銹(xiu)鋼(gang)法(fa)蘭(lan)(lan)(lan)墊(dian)片(pian)(pian)的主(zhu)要參數(shu)包括墊(dian)片(pian)(pian)的有(you)效密封(feng)寬度(du)、墊(dian)片(pian)(pian)的性能參數(shu)、墊(dian)片(pian)(pian)公稱通(tong)(tong)徑或(huo)公稱尺(chi)寸及墊(dian)片(pian)(pian)公稱壓力。一、不(bu)銹(xiu)鋼(gang)法(fa)蘭(lan)(lan)(lan)墊(dian)片(pian)(pian)的有(you)效密封(feng)寬度(du) 法(fa)蘭(lan)(lan)(lan)密封(feng)接頭(tou)中，墊(dian)片(pian)(pian)的有(you)效密封(feng)寬度(du)是作為計算法(fa)蘭(lan)(lan)(lan)螺(luo)栓載荷必不(bu)可少的一個特性參數(shu)，通(tong)(tong)常用符號b表(biao)示，其單位以(yi)mm計。不(bu)銹(xiu)鋼(gang)...
一(yi)、法(fa)蘭緊固(gu)件標記(ji)(ji)1.標記(ji)(ji)方(fang)法(fa) 緊固(gu)件的標記(ji)(ji)方(fang)法(fa)應(ying)符合GB/T1237《緊固(gu)件標記(ji)(ji)方(fang)法(fa)》的規定。2.標記(ji)(ji)示例 示例1: 螺(luo)紋規格(ge)為M16,公稱(cheng)長度ι=80mm、性能等級(ji)為5.6級(ji)、表面氧化處理(li)的六(liu)角頭螺(luo)栓，標記(ji)(ji)為：六(liu)角螺(luo)栓GB/T...
一、選用墊片(pian)的基本原則a.選用或訂購墊片(pian)時應(ying)了解的數據 1.相配不(bu)銹鋼法(fa)蘭的密封面(mian)型式和尺(chi)寸。 2.不(bu)銹鋼法(fa)蘭及(ji)墊片(pian)的公稱通徑或公稱尺(chi)寸。 3.不(bu)銹鋼法(fa)蘭及(ji)墊片(pian)的公稱壓力。 4.流體(ti)介(jie)質的性質。 5.流體(ti)介(jie)質...
由非金屬材(cai)(cai)料制成的(de)平墊(dian)(dian)(dian)(dian)(dian)片，在墊(dian)(dian)(dian)(dian)(dian)片產品中占有(you)很重要(yao)的(de)地位(wei)。按照目(mu)前(qian)工業(ye)上常用的(de)非金屬平墊(dian)(dian)(dian)(dian)(dian)片（包括(kuo)板(ban)材(cai)(cai)）的(de)品種(zhong)，根據材(cai)(cai)料的(de)不(bu)同大體可以(yi)分為以(yi)下6種(zhong)： 1.橡膠墊(dian)(dian)(dian)(dian)(dian)片（彈性體板(ban)）； 2.石(shi)(shi)棉(mian)(mian)橡膠墊(dian)(dian)(dian)(dian)(dian)片； 3.非石(shi)(shi)棉(mian)(mian)纖維橡膠墊(dian)(dian)(dian)(dian)(dian)片； 4....
非(fei)金(jin)屬軟墊(dian)(dian)(dian)片(pian)(pian)系指用非(fei)金(jin)屬密封材(cai)料加工制作的墊(dian)(dian)(dian)片(pian)(pian)，主要有石棉(mian)橡(xiang)膠板(ban)(ban)、純(chun)聚四氟乙烯(xi)板(ban)(ban)、非(fei)石棉(mian)纖維橡(xiang)膠板(ban)(ban)和橡(xiang)膠板(ban)(ban)裁制成的墊(dian)(dian)(dian)片(pian)(pian)等。1.墊(dian)(dian)(dian)片(pian)(pian)與法(fa)蘭密封面的配合型式 墊(dian)(dian)(dian)片(pian)(pian)與法(fa)蘭密封面的配合型式有4種，如圖12-1所(suo)示。2.管(guan)法(fa)蘭用墊(dian)(dian)(dian)片(pian)(pian)的型式 全平面（代(dai)號為FF)管(guan)...
一、非(fei)金(jin)屬軟(ruan)墊片尺(chi)寸公(gong)差(cha)1.平(ping)面(mian)(mian)(mian)和(he)突(tu)面(mian)(mian)(mian)法(fa)蘭用(yong)墊片 平(ping)面(mian)(mian)(mian)和(he)突(tu)面(mian)(mian)(mian)管法(fa)蘭用(yong)非(fei)金(jin)屬平(ping)墊片尺(chi)寸的極限偏差(cha)見(jian)表12-9。2.凹凸面(mian)(mian)(mian)和(he)榫(sun)(sun)槽面(mian)(mian)(mian)法(fa)蘭用(yong)墊片 凹凸面(mian)(mian)(mian)和(he)榫(sun)(sun)槽面(mian)(mian)(mian)管法(fa)蘭用(yong)非(fei)金(jin)屬平(ping)墊片尺(chi)寸的極限偏差(cha)見(jian)表12-10。二、非(fei)金(jin)屬軟(ruan)墊片技術要(yao)求1.材料 非(fei)金(jin)...
一、非(fei)金(jin)屬軟墊(dian)(dian)片標(biao)(biao)記(ji)1.標(biao)(biao)記(ji)方式(shi)2.標(biao)(biao)記(ji)示例 公稱(cheng)尺寸DN50,公稱(cheng)壓力PN10的全平(ping)面管法(fa)蘭用(yong)非(fei)金(jin)屬平(ping)墊(dian)(dian)片，其(qi)標(biao)(biao)記(ji)為：非(fei)金(jin)屬平(ping)墊(dian)(dian)片FFDN50-PN10GB/T9126二、非(fei)金(jin)屬軟墊(dian)(dian)片標(biao)(biao)志 墊(dian)(dian)片的標(biao)(biao)志可采用(yong)標(biao)(biao)簽或其(qi)他方式(shi)，但標(biao)(biao)志應包括下列內容：...
聚(ju)四氟(fu)乙烯包(bao)覆墊(dian)片是一種非(fei)金屬(shu)復合型(xing)軟墊(dian)片，一般由包(bao)封皮及(ji)嵌入(ru)物兩(liang)部分組(zu)成，包(bao)封皮主要起耐腐蝕(shi)作用(yong)，通(tong)常由聚(ju)四氟(fu)乙烯材料(liao)制成，嵌入(ru)物（填料(liao)）為(wei)帶或不帶金屬(shu)加強肋(lei)的非(fei)金屬(shu)材料(liao)，通(tong)常由石(shi)棉橡(xiang)膠(jiao)板制成。在石(shi)油(you)、化工(gong)、制藥及(ji)食品工(gong)業中，為(wei)保證物料(liao)的清潔而不得不使用(yong)...
1.銅(tong)(tong)合(he)金(jin)(jin)(jin)法(fa)蘭(lan)(lan)(lan)的尺(chi)寸(cun)公差應符合(he)GB/T15530.8-1995《銅(tong)(tong)合(he)金(jin)(jin)(jin)及(ji)復合(he)法(fa)蘭(lan)(lan)(lan)技術條件》的規(gui)定。2.銅(tong)(tong)合(he)金(jin)(jin)(jin)整體鑄造法(fa)蘭(lan)(lan)(lan)、銅(tong)(tong)合(he)金(jin)(jin)(jin)帶頸平焊法(fa)蘭(lan)(lan)(lan)、銅(tong)(tong)合(he)金(jin)(jin)(jin)平焊環(huan)松(song)套鋼法(fa)蘭(lan)(lan)(lan)、銅(tong)(tong)管折邊和銅(tong)(tong)合(he)金(jin)(jin)(jin)對焊環(huan)松(song)套鋼法(fa)蘭(lan)(lan)(lan)等四種法(fa)蘭(lan)(lan)(lan)的未注形狀(zhuang)和位置公差應符合(he)GB/T1184-1996《形狀(zhuang)和位置...
非金(jin)(jin)(jin)屬(shu)材(cai)料制成的(de)墊片(pian)(pian)，雖(sui)具有很(hen)好(hao)的(de)柔軟(ruan)性(xing)、壓(ya)縮性(xing)和所需(xu)螺(luo)栓(shuan)載荷低等(deng)優(you)點(dian)，但耐高溫、高壓(ya)性(xing)能均不如金(jin)(jin)(jin)屬(shu)墊片(pian)(pian)。為此，結(jie)合金(jin)(jin)(jin)屬(shu)材(cai)料強度高、回彈性(xing)好(hao)、能承受高溫的(de)特點(dian)，制成了具有兩者組(zu)合結(jie)構的(de)墊片(pian)(pian)，即金(jin)(jin)(jin)屬(shu)復(fu)合墊片(pian)(pian)或半金(jin)(jin)(jin)屬(shu)墊片(pian)(pian)。金(jin)(jin)(jin)屬(shu)復(fu)合墊片(pian)(pian)用途較廣，其品種(zhong)多(duo)種(zhong)多(duo)樣(yang)。典型(xing)金(jin)(jin)(jin)屬(shu)復(fu)...
在高壓(ya)不銹鋼管道連接中，廣泛使用有孔(kong)及無孔(kong)透鏡墊(dian)密封(feng)(feng)結構。透鏡墊(dian)的(de)密封(feng)(feng)面(mian)(mian)均為球面(mian)(mian)，與管道的(de)錐形密封(feng)(feng)面(mian)(mian)相(xiang)接觸，初始狀態為一環(huan)線。在預緊力作用下(xia)，透鏡墊(dian)在接觸處產生塑性變形，環(huan)線狀變成(cheng)環(huan)帶狀，密封(feng)(feng)性能較好。由于(yu)接觸面(mian)(mian)是由球面(mian)(mian)和(he)斜面(mian)(mian)自(zi)然形成(cheng)，墊(dian)片易對中。透鏡墊(dian)片密封(feng)(feng)屬于(yu)強...
