道真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

　　因(yin)為(wei)材(cai)料(liao)在(zai)介(jie)質(zhi)中(zhong)的(de)溶(rong)脹(zhang)程(cheng)度(du)是(shi)密(mi)封(feng)性(xing)能(neng)好(hao)壞(huai)的(de)關(guan)鍵(jian)因(yin)素(su)，所(suo)以(yi)在(zai)選(xuan)擇(ze)液(ye)壓(ya)密(mi)封(feng)件(jian)材(cai)料(liao)時(shi)
，第(di)一(yi)要(yao)考(kao)慮(lv)的(de)因(yin)素(su)是(shi)所(suo)選(xuan)擇(ze)的(de)材(cai)料(liao)能(neng)否(fou)很(hen)好(hao)地(di)與(yu)密(mi)封(feng)介(jie)質(zhi)相(xiang)容(rong);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

　　yingdushimifengcailiaodezhongyaozhibiao
，zhuyaogenjumifengmiandecucaodulaiqueding。dangmifengmianbijiaocucaoshi
，mifengjiandeyingduyaodi，zheyangcainengbaozhengmifengxiaoguohao。mifengyalibijiaogaodebuwei

，zeyaoqiushidangtigaomifengjiandeyingdu，zheyangkeyifangmifengjianguodubianxing，fangzhifashengmifengjianbeijichudexianxiang。ciwai
，cailiaoyingduyousuishiyongwendushenggaoerxiajiangdetedian

，bingqieyingdugao，cailiaodenaimoxingnengyeqiang。