棗強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

　　密mi封feng件jian的de工gong作zuo溫wen度du取qu決jue於yu密mi封feng介jie質zhi的de溫wen度du及ji密mi封feng件jian本ben身shen在zai運yun動dong過guo程cheng中zhong的de溫wen升sheng。溫wen度du直zhi接jie影ying響xiang密mi封feng性xing能neng。過guo高gao的de溫wen度du往wang往wang會hui加jia速su密mi封feng材cai料liao的de老lao化hua
，降jiang低di材cai料liao的de彈dan性xing、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

　　yinweiyeyamifengjianmifengnenglidetigongzhuyaoshiyikaoqizaimifenggoucaoneizishenchanshengkehuifudeyasuobianxingerhuodede。suoyi

，suoxuandemifengcailiaodeyongjiuxingbianxingyaoxiao，danxingyaoqiang，huidanliyaogao。lingwai，cailiaodeyongjiubianxinghaiyuwendubianhuayouyidingguanxi



，wenduguogaohuoguodidouhuizengjiayongjiubianxing;

　　6
、彈性

　　suoweijiyaxingmifengjiushizhiyikaomifengcailiaoshouyahouzishenchanshengdehuidanlierdedaomifengnenglideyizhongmifengfangshi。yinweichunxingmifengkenengcunzaiyidingliangdepianxin，suoyixuyaoyikaocailiaodedanxinglaibuchangmifengdejiechuyinglibuzudengwenti。suoyi，cailiaodedanxingduiyumifengxiaoguodehaohuaizhiguanzhongyao;

　　7、硬度

　　yingdushimifengcailiaodezhongyaozhibiao，zhuyaogenjumifengmiandecucaodulaiqueding。dangmifengmianbijiaocucaoshi，mifengjiandeyingduyaodi，zheyangcainengbaozhengmifengxiaoguohao。mifengyalibijiaogaodebuwei，zeyaoqiushidangtigaomifengjiandeyingdu
，zheyangkeyifangmifengjianguodubianxing，fangzhifashengmifengjianbeijichudexianxiang。ciwai，cailiaoyingduyousuishiyongwendushenggaoerxiajiangdetedian，bingqieyingdugao，cailiaodenaimoxingnengyeqiang。