法(fa)(fa)兰(lan)(lan)(lan)作为在(zai)(zai)石油化(hua)工装(zhuang)置、各种管(guan)(guan)道、管(guan)(guan)件(jian)(jian)、阀门、仪表和(he)设(she)备等常见、有效、重要的(de)连(lian)接形式之一，有着其独具的(de)性能(neng)和(he)优势。而绝大多(duo)数运(yun)用法(fa)(fa)兰(lan)(lan)(lan)的(de)情况下，是由法(fa)(fa)兰(lan)(lan)(lan)、螺栓、垫(dian)(dian)(dian)(dian)片(pian)(pian)三者(zhe)协同(tong)实现密(mi)(mi)(mi)封(feng)，其中任何一个部件(jian)(jian)出现问(wen)题，都会引起整个密(mi)(mi)(mi)封(feng)系(xi)统的(de)泄露可能(neng)。法(fa)(fa)兰(lan)(lan)(lan)的(de)密(mi)(mi)(mi)封(feng)原理：通过螺栓的(de)预紧力，使垫(dian)(dian)(dian)(dian)片(pian)(pian)和(he)法(fa)(fa)兰(lan)(lan)(lan)密(mi)(mi)(mi)封(feng)表面之间(jian)(jian)产生足(zu)够的(de)压力，垫(dian)(dian)(dian)(dian)片(pian)(pian)发生塑性变形以填充法(fa)(fa)兰(lan)(lan)(lan)密(mi)(mi)(mi)封(feng)面之间(jian)(jian)存在(zai)(zai)的(de)微小间(jian)(jian)隙，堵塞(sai)介(jie)质泄漏通道，达到密(mi)(mi)(mi)封(feng)的(de)效果(guo)。垫(dian)(dian)(dian)(dian)片(pian)(pian)实际上(shang)是法(fa)(fa)兰(lan)(lan)(lan)密(mi)(mi)(mi)封(feng)重要的(de)部件(jian)(jian)。法(fa)(fa)兰(lan)(lan)(lan)连(lian)接所用的(de)垫(dian)(dian)(dian)(dian)片(pian)(pian)有石墨(mo)垫(dian)(dian)(dian)(dian)片(pian)(pian)、聚四氟垫(dian)(dian)(dian)(dian)片(pian)(pian)、无(wu)石棉软垫(dian)(dian)(dian)(dian)片(pian)(pian)、橡(xiang)胶垫(dian)(dian)(dian)(dian)片(pian)(pian)、缠(chan)绕(rao)垫(dian)(dian)(dian)(dian)片(pian)(pian)、金属复合垫(dian)(dian)(dian)(dian)片(pian)(pian)等多(duo)种，根据不同(tong)的(de)温度压力和(he)密(mi)(mi)(mi)封(feng)介(jie)质选择合适的(de)密(mi)(mi)(mi)封(feng)材料。法(fa)(fa)兰(lan)(lan)(lan)垫(dian)(dian)(dian)(dian)片(pian)(pian)可嵌入微裂纹和(he)裂缝堵塞(sai)，尤其在(zai)(zai)耐酸、碱、防腐及非金属设(she)施(shi)方面。黑龙江法(fa)(fa)兰(lan)(lan)(lan)垫(dian)(dian)(dian)(dian)片(pian)(pian)价格

法(fa)(fa)兰(lan)(lan)(lan)垫片(pian)(pian)适(shi)(shi)用(yong)(yong)于(yu)(yu)各种介质的(de)(de)(de)管(guan)(guan)道、压力容器(qi)、阀门、泵、换热器(qi)等设(she)备(bei)的(de)(de)(de)法(fa)(fa)兰(lan)(lan)(lan)连接处(chu)，作静(jing)密封之用(yong)(yong)。应(ying)用(yong)(yong)于(yu)(yu)石(shi)油、化工(gong)、机械(xie)、冶金、电力、造(zao)船(chuan)及管(guan)(guan)道、压力容器(qi)、人(ren)孔、手(shou)孔等法(fa)(fa)兰(lan)(lan)(lan)连接处(chu)，作静(jing)密封之用(yong)(yong)。由(you)于(yu)(yu)机械(xie)强度(du)高(gao)(gao)，使用(yong)(yong)方(fang)便，压缩回弹性(xing)(xing)好(hao)(hao)，更(geng)适(shi)(shi)应(ying)在(zai)剧(ju)烈(lie)的(de)(de)(de)温(wen)度(du)交变场合应(ying)用(yong)(yong)。法(fa)(fa)兰(lan)(lan)(lan)垫片(pian)(pian)的(de)(de)(de)作业环(huan)境如下：1、严(yan)苛(ke)工(gong)况(kuang)变为密封可接受工(gong)况(kuang)。2、实践作业中，不(bu)必(bi)任何(he)辅(fu)佐设(she)备(bei)的(de)(de)(de)法(fa)(fa)兰(lan)(lan)(lan)垫片(pian)(pian)几乎没有(you)。如高(gao)(gao)压运用(yong)(yong)的(de)(de)(de)串联(lian)法(fa)(fa)兰(lan)(lan)(lan)垫片(pian)(pian)、高(gao)(gao)温(wen)法(fa)(fa)兰(lan)(lan)(lan)垫片(pian)(pian)都须选用(yong)(yong)相(xiang)应(ying)辅(fu)佐设(she)备(bei)。3、无辅(fu)佐体系(xi)，就只(zhi)能改变密封布局(ju)，进步原(yuan)料。在(zai)应(ying)用(yong)(yong)法(fa)(fa)兰(lan)(lan)(lan)垫片(pian)(pian)时，在(zai)400℃以上(shang)加热时，法(fa)(fa)兰(lan)(lan)(lan)垫片(pian)(pian)的(de)(de)(de)裂(lie)解(jie)速度(du)逐渐加快，分解(jie)产物主要是(shi)四氟乙烯、全氟丙烯和八氟环(huan)丁烷。黑(hei)龙江缠绕垫片(pian)(pian)法(fa)(fa)兰(lan)(lan)(lan)垫片(pian)(pian)在(zai)零下将近二(er)百的(de)(de)(de)低(di)温(wen)下还(hai)能具有(you)很好(hao)(hao)的(de)(de)(de)伸(shen)长率，具有(you)很好(hao)(hao)的(de)(de)(de)耐(nai)低(di)温(wen)性(xing)(xing)，机械(xie)韧性(xing)(xing)好(hao)(hao)。

法(fa)兰(lan)垫(dian)片可用(yong)于密(mi)(mi)封(feng)(feng)(feng)受污(wu)染的(de)(de)部件(jian)(jian)，垫(dian)片不(bu)(bu)会(hui)(hui)像石墨那样(yang)由于氧化效应而(er)导(dao)致密(mi)(mi)封(feng)(feng)(feng)应力(li)消失而(er)导(dao)致密(mi)(mi)封(feng)(feng)(feng)失效。它具有982°C（1800°F）的(de)(de)温(wen)度(du)，非常适(shi)(shi)合内(nei)燃机排气(qi)系统，氮肥处理(li)，高温(wen)蒸汽发生(sheng)器以及许(xu)多(duo)其(qi)他高温(wen)条件(jian)(jian)。法(fa)兰(lan)垫(dian)片的(de)(de)材质(zhi)(zhi)不(bu)(bu)同的(de)(de)话，其(qi)耐腐(fu)蚀性、耐热性、密(mi)(mi)度(du)等(deng)也会(hui)(hui)有所区别(bie)，适(shi)(shi)合使(shi)用(yong)的(de)(de)场合和密(mi)(mi)封(feng)(feng)(feng)介质(zhi)(zhi)也会(hui)(hui)不(bu)(bu)一样(yang)。选(xuan)(xuan)购法(fa)兰(lan)垫(dian)片的(de)(de)时候，一般都还(hai)需要(yao)考(kao)虑到密(mi)(mi)封(feng)(feng)(feng)介质(zhi)(zhi)，而(er)法(fa)兰(lan)垫(dian)片经常被(bei)用(yong)于水、油、酸等(deng)溶(rong)液的(de)(de)密(mi)(mi)封(feng)(feng)(feng)施工当中，为了确保密(mi)(mi)封(feng)(feng)(feng)效果(guo)，就(jiu)需要(yao)根据被(bei)密(mi)(mi)封(feng)(feng)(feng)介质(zhi)(zhi)的(de)(de)实际(ji)温(wen)度(du)、酸碱性、压(ya)力(li)等(deng)情(qing)况来选(xuan)(xuan)择适(shi)(shi)合的(de)(de)垫(dian)片材质(zhi)(zhi)。

法(fa)(fa)兰(lan)(lan)垫(dian)(dian)片(pian)(pian)不只具(ju)有(you)很强的(de)(de)耐腐蚀能力，而且(qie)还(hai)可(ke)以耐高(gao)温，同时(shi)不容易和(he)酸(suan)碱等(deng)物质(zhi)(zhi)产(chan)(chan)生化学反(fan)应，另外还(hai)具(ju)有(you)良好的(de)(de)柔韧性(xing)，可(ke)以有(you)效(xiao)的(de)(de)保(bao)护产(chan)(chan)品的(de)(de)安全。选购法(fa)(fa)兰(lan)(lan)垫(dian)(dian)片(pian)(pian)的(de)(de)时(shi)候，一定要(yao)了解清楚法(fa)(fa)兰(lan)(lan)垫(dian)(dian)片(pian)(pian)的(de)(de)材(cai)质(zhi)(zhi)和(he)性(xing)能，法(fa)(fa)兰(lan)(lan)垫(dian)(dian)片(pian)(pian)的(de)(de)性(xing)能会影(ying)响(xiang)到(dao)法(fa)(fa)兰(lan)(lan)垫(dian)(dian)片(pian)(pian)的(de)(de)具(ju)体(ti)使(shi)用场合。法(fa)(fa)兰(lan)(lan)垫(dian)(dian)片(pian)(pian)的(de)(de)材(cai)质(zhi)(zhi)不同的(de)(de)话，其(qi)耐腐蚀性(xing)、耐热(re)性(xing)、密(mi)度等(deng)也会有(you)所区别，适合使(shi)用的(de)(de)场合和(he)密(mi)封(feng)介(jie)(jie)质(zhi)(zhi)也会不一样。选购法(fa)(fa)兰(lan)(lan)垫(dian)(dian)片(pian)(pian)的(de)(de)时(shi)候，一般(ban)都还(hai)需要(yao)考虑到(dao)密(mi)封(feng)介(jie)(jie)质(zhi)(zhi)，而法(fa)(fa)兰(lan)(lan)垫(dian)(dian)片(pian)(pian)经常(chang)被用于(yu)水、油、酸(suan)等(deng)溶(rong)液的(de)(de)密(mi)封(feng)施(shi)工当中，为了确(que)保(bao)密(mi)封(feng)效(xiao)果，就需要(yao)根(gen)据被密(mi)封(feng)介(jie)(jie)质(zhi)(zhi)的(de)(de)实际(ji)温度、酸(suan)碱性(xing)、压(ya)力等(deng)情(qing)(qing)况(kuang)来选择适合的(de)(de)垫(dian)(dian)片(pian)(pian)材(cai)质(zhi)(zhi)。一般(ban)情(qing)(qing)况(kuang)下(xia)，若是纯法(fa)(fa)兰(lan)(lan)垫(dian)(dian)片(pian)(pian)的(de)(de)话，那么其(qi)机械强度就是在零下(xia)一百度到(dao)零上一百度之间，并且(qie)会相对稳定。

缠(chan)绕(rao)式垫(dian)片(pian)(pian)(pian)(pian)(pian)主要(yao)包(bao)括金(jin)属(shu)(shu)缠(chan)绕(rao)垫(dian)片(pian)(pian)(pian)(pian)(pian)，石墨(mo)缠(chan)绕(rao)垫(dian)片(pian)(pian)(pian)(pian)(pian)，石墨(mo)金(jin)属(shu)(shu)缠(chan)绕(rao)垫(dian)片(pian)(pian)(pian)(pian)(pian)，金(jin)属(shu)(shu)石墨(mo)缠(chan)绕(rao)垫(dian)片(pian)(pian)(pian)(pian)(pian)，内外环缠(chan)绕(rao)垫(dian)片(pian)(pian)(pian)(pian)(pian)， 金(jin)属(shu)(shu)石棉(mian)缠(chan)绕(rao)垫(dian)片(pian)(pian)(pian)(pian)(pian)，金(jin)属(shu)(shu)四氟缠(chan)绕(rao)垫(dian)片(pian)(pian)(pian)(pian)(pian)等。性(xing)(xing)能(neng)(neng)及(ji)特(te)点：适用的(de)(de)工况(kuang)范(fan)围宽。能(neng)(neng)耐高温(wen)、高压和(he)适应较低温(wen)或真(zhen)空下的(de)(de)使用条件。通过改变垫(dian)片(pian)(pian)(pian)(pian)(pian)的(de)(de)材(cai)料组(zu)合(he)，可解决各种介质对垫(dian)片(pian)(pian)(pian)(pian)(pian)的(de)(de)化学腐蚀(shi)问(wen)题。应力(li)补偿能(neng)(neng)力(li)强。在(zai)(zai)温(wen)度(du)、压力(li)波(bo)动频繁(fan)的(de)(de)工位上，密(mi)(mi)封(feng)性(xing)(xing)能(neng)(neng)稳定(ding)、可靠(kao)。密(mi)(mi)封(feng)性(xing)(xing)能(neng)(neng)优良。对与(yu)垫(dian)片(pian)(pian)(pian)(pian)(pian)接(jie)触的(de)(de)法(fa)兰密(mi)(mi)封(feng)面的(de)(de)表面精度(du)要(yao)求不高。安(an)装方便，垫(dian)片(pian)(pian)(pian)(pian)(pian)预(yu)紧压力(li)较低。法(fa)兰垫(dian)片(pian)(pian)(pian)(pian)(pian)具有很好(hao)的(de)(de)耐腐蚀(shi)性(xing)(xing)，并且只在(zai)(zai)高温(wen)高压下作用于(yu)熔融碱(jian)金(jin)属(shu)(shu)和(he)氟元素(su)等元素(su)。贵阳无石棉(mian)垫(dian)片(pian)(pian)(pian)(pian)(pian)

法(fa)(fa)兰垫片具有较好(hao)的弹(dan)性(xing)，用于石化(hua)(hua)、化(hua)(hua)工、电力等行业的法(fa)(fa)兰密封结构中。黑龙(long)江法(fa)(fa)兰垫片价格

法(fa)兰垫(dian)片(pian)(pian)外部条件的(de)(de)(de)影(ying)(ying)响：管道(dao)系统(tong)的(de)(de)(de)振动、连接组(zu)件的(de)(de)(de)变(bian)形(xing)、安装位置的(de)(de)(de)偏移等原因(yin)都会(hui)对(dui)密(mi)封(feng)(feng)(feng)件产生(sheng)附加作用力，从而(er)对(dui)密(mi)封(feng)(feng)(feng)造(zao)(zao)成不(bu)利的(de)(de)(de)影(ying)(ying)响。尤其是振动，将(jiang)使密(mi)封(feng)(feng)(feng)面间(jian)的(de)(de)(de)压紧力产生(sheng)周期性变(bian)化，使连接螺栓(shuan)松弛，从而(er)造(zao)(zao)成密(mi)封(feng)(feng)(feng)失效(xiao)(xiao)。要想达到(dao)(dao)良好的(de)(de)(de)密(mi)封(feng)(feng)(feng)效(xiao)(xiao)果(guo)，必须认真考虑以下诸(zhu)因(yin)素。垫(dian)片(pian)(pian)的(de)(de)(de)型(xing)式(shi)和适用范围应符合设(she)计文件以及国家和相(xiang)关(guan)行(xing)业现(xian)行(xing)有效(xiao)(xiao)标(biao)准的(de)(de)(de)规定，垫(dian)片(pian)(pian)材质及使用标(biao)准的(de)(de)(de)变(bian)更需经审(shen)批。选择垫(dian)片(pian)(pian)的(de)(de)(de)影(ying)(ying)响因(yin)素很多(duo)，通常应在保证安全运行(xing)的(de)(de)(de)前提下，尽量选用价(jia)格(ge)(ge)便(bian)宜(yi)、制造(zao)(zao)容易、安装和更换都比较(jiao)简便(bian)的(de)(de)(de)垫(dian)片(pian)(pian)。垫(dian)片(pian)(pian)的(de)(de)(de)厚度，视具(ju)体(ti)情(qing)(qing)况而(er)定。一般来(lai)说，如果(guo)密(mi)封(feng)(feng)(feng)面加工(gong)良好，压力不(bu)太(tai)高时，宜(yi)选用薄垫(dian)片(pian)(pian)。但内压力较(jiao)高的(de)(de)(de)情(qing)(qing)况下，垫(dian)片(pian)(pian)太(tai)薄，对(dui)应于螺栓(shuan)的(de)(de)(de)伸长(zhang)，垫(dian)片(pian)(pian)的(de)(de)(de)回弹太(tai)小，不(bu)能达到(dao)(dao)必要的(de)(de)(de)复(fu)原量易产生(sheng)泄漏，故压力较(jiao)高时，应选用较(jiao)厚的(de)(de)(de)垫(dian)片(pian)(pian)。黑龙江法(fa)兰垫(dian)片(pian)(pian)价(jia)格(ge)(ge)

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