北辰液壓密封件材料性能要求

　　液壓密封技術的好壞會影響液壓支架的工作質量和壽命。那麼液壓密封件產品應該具備哪些性能呢?

　　1、耐溫性能

　　mifengjiandegongzuowenduqujueyumifengjiezhidewendujimifengjianbenshenzaiyundongguochengzhongdewensheng。wenduzhijieyingxiangmifengxingneng。guogaodewenduwangwanghuijiasumifengcailiaodelaohua，jiangdicailiaodedanxing
、硬度等性能，發生材料硬化;溫度過低也會導致材料加速硬化，失去彈性性能，降低了材料的密封效果。綜上所述，應采用有一定使用溫度範圍的材料。

　　2、耐介質性

　　yinweicailiaozaijiezhizhongderongzhangchengdushimifengxingnenghaohuaideguanjianyinsu，suoyizaixuanzeyeyamifengjiancailiaoshi，diyiyaokaolvdeyinsushisuoxuanzedecailiaonengfouhenhaodiyumifengjiezhixiangrong;如ru果guo密mi封feng材cai料liao和he密mi封feng流liu體ti相xiang容rong，會hui導dao致zhi密mi封feng件jian膨peng脹zhang或huo收shou縮suo，在zai使shi用yong初chu期qi就jiu發fa生sheng故gu障zhang。密mi封feng件jian膨peng脹zhang引yin起qi摩mo擦ca阻zu力li增zeng加jia，同tong時shi會hui使shi密mi封feng件jian滾gun動dong。密mi封feng件jian收shou縮suo會hui引yin起qi預yu壓ya量liang減jian少shao，偏pian心xin補bu償chang能neng力li降jiang低di，直zhi至zhi泄xie漏lou。

　　3、耐磨性能

　　cailiaodenaimotexingshidongmifengdezhongyaoxingnengzhibiaozhiyi。naimoxinghao，zeshiyongshoumingchang。cailiaonaimoxingnengyucailiaodeyingduyouzhemiqiedelianxi，cailiaoyingduyuegaonaimoxingyuehao，shiyongshoumingyuechang;

　　4、抗拉強度

　　yinweiyibanmifengcailiaodekanglaqiangduhuibansuizhewendudeshenggaoerchengxiajiangqushi
，suoyixuanzecailiaoshi，bixukaolvqishijizuigaoshiyongwendujigaowenqingkuangxiadejixieqiangdu。kanglaqiangduguodi，huichanshengyidingliangdeyinglisongchishenzhiyongjiubianxing，zaochengmifengshixiao。kanglaqiangduguogao
，duicailiaodexingnengyaoqiuguoyukeke。suoyi，shijixuanzecailiaoshi
，yinggaizonghekaolvcailiaodekanglaqiangdu;

　　5、永久變形

　　因yin為wei液ye壓ya密mi封feng件jian密mi封feng能neng力li的de提ti供gong主zhu要yao是shi依yi靠kao其qi在zai密mi封feng溝gou槽cao內nei自zi身shen產chan生sheng可ke恢hui複fu的de壓ya縮suo變bian形xing而er獲huo得de的de。所suo以yi，所suo選xuan的de密mi封feng材cai料liao的de永yong久jiu性xing變bian形xing要yao小xiao，彈dan性xing要yao強qiang
，回hui彈dan力li要yao高gao。另ling外wai

，材cai料liao的de永yong久jiu變bian形xing還hai與yu溫wen度du變bian化hua有you一yi定ding關guan係xi
，溫wen度du過guo高gao或huo過guo低di都dou會hui增zeng加jia永yong久jiu變bian形xing;

　　6、彈性

　　所suo謂wei擠ji壓ya型xing密mi封feng就jiu是shi指zhi依yi靠kao密mi封feng材cai料liao受shou壓ya後hou自zi身shen產chan生sheng的de回hui彈dan力li而er得de到dao密mi封feng能neng力li的de一yi種zhong密mi封feng方fang式shi。因yin為wei唇chun形xing密mi封feng可ke能neng存cun在zai一yi定ding量liang的de偏pian心xin，所suo以yi需xu要yao依yi靠kao材cai料liao的de彈dan性xing來lai補bu償chang密mi封feng的de接jie觸chu應ying力li不bu足zu等deng問wen題ti。所suo以yi
，材cai料liao的de彈dan性xing對dui於yu密mi封feng效xiao果guo的de好hao壞huai至zhi關guan重zhong要yao;

　　7、硬度

　　硬(ying)度(du)是(shi)密(mi)封(feng)材(cai)料(liao)的(de)重(zhong)要(yao)指(zhi)標(biao)
，主(zhu)要(yao)根(gen)據(ju)密(mi)封(feng)麵(mian)的(de)粗(cu)糙(cao)度(du)來(lai)確(que)定(ding)。當(dang)密(mi)封(feng)麵(mian)比(bi)較(jiao)粗(cu)糙(cao)時(shi)
，密(mi)封(feng)件(jian)的(de)硬(ying)度(du)要(yao)低(di)
，這(zhe)樣(yang)才(cai)能(neng)保(bao)證(zheng)密(mi)封(feng)效(xiao)果(guo)好(hao)。密(mi)封(feng)壓(ya)力(li)比(bi)較(jiao)高(gao)的(de)部(bu)位(wei)，則(ze)要(yao)求(qiu)適(shi)當(dang)提(ti)高(gao)密(mi)封(feng)件(jian)的(de)硬(ying)度(du)，這(zhe)樣(yang)可(ke)以(yi)防(fang)密(mi)封(feng)件(jian)過(guo)度(du)變(bian)形(xing)，防(fang)止(zhi)發(fa)生(sheng)密(mi)封(feng)件(jian)被(bei)擠(ji)出(chu)的(de)現(xian)象(xiang)。此(ci)外(wai)，材(cai)料(liao)硬(ying)度(du)有(you)隨(sui)使(shi)用(yong)溫(wen)度(du)升(sheng)高(gao)而(er)下(xia)降(jiang)的(de)特(te)點(dian)，並(bing)且(qie)硬(ying)度(du)高(gao)
，材(cai)料(liao)的(de)耐(nai)磨(mo)性(xing)能(neng)也(ye)強(qiang)。