豐縣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

　　yinweicailiaozaijiezhizhongderongzhangchengdushimifengxingnenghaohuaideguanjianyinsu，suoyizaixuanzeyeyamifengjiancailiaoshi，diyiyaokaolvdeyinsushisuoxuanzedecailiaonengfouhenhaodiyumifengjiezhixiangrong;ruguomifengcailiaohemifengliutixiangrong，huidaozhimifengjianpengzhanghuoshousuo
，zaishiyongchuqijiufashengguzhang。mifengjianpengzhangyinqimocazulizengjia，tongshihuishimifengjiangundong。mifengjianshousuohuiyinqiyuyaliangjianshao，pianxinbuchangnenglijiangdi
，zhizhixielou。

　　3
、耐磨性能

　　材(cai)料(liao)的(de)耐(nai)磨(mo)特(te)性(xing)是(shi)動(dong)密(mi)封(feng)的(de)重(zhong)要(yao)性(xing)能(neng)指(zhi)標(biao)之(zhi)一(yi)。耐(nai)磨(mo)性(xing)好(hao)
，則(ze)使(shi)用(yong)壽(shou)命(ming)長(chang)。材(cai)料(liao)耐(nai)磨(mo)性(xing)能(neng)與(yu)材(cai)料(liao)的(de)硬(ying)度(du)有(you)著(zhe)密(mi)切(qie)的(de)聯(lian)係(xi)
，材(cai)料(liao)硬(ying)度(du)越(yue)高(gao)耐(nai)磨(mo)性(xing)越(yue)好(hao)
，使(shi)用(yong)壽(shou)命(ming)越(yue)長(chang);

　　4、抗拉強度

　　因(yin)為(wei)一(yi)般(ban)密(mi)封(feng)材(cai)料(liao)的(de)抗(kang)拉(la)強(qiang)度(du)會(hui)伴(ban)隨(sui)著(zhe)溫(wen)度(du)的(de)升(sheng)高(gao)而(er)成(cheng)下(xia)降(jiang)趨(qu)勢(shi)

，所(suo)以(yi)選(xuan)擇(ze)材(cai)料(liao)時(shi)，必(bi)須(xu)考(kao)慮(lv)其(qi)實(shi)際(ji)最(zui)高(gao)使(shi)用(yong)溫(wen)度(du)及(ji)高(gao)溫(wen)情(qing)況(kuang)下(xia)的(de)機(ji)械(xie)強(qiang)度(du)。抗(kang)拉(la)強(qiang)度(du)過(guo)低(di)，會(hui)產(chan)生(sheng)一(yi)定(ding)量(liang)的(de)應(ying)力(li)鬆(song)弛(chi)甚(shen)至(zhi)永(yong)久(jiu)變(bian)形(xing)
，造(zao)成(cheng)密(mi)封(feng)失(shi)效(xiao)。抗(kang)拉(la)強(qiang)度(du)過(guo)高(gao)，對(dui)材(cai)料(liao)的(de)性(xing)能(neng)要(yao)求(qiu)過(guo)於(yu)苛(ke)刻(ke)。所(suo)以(yi)，實(shi)際(ji)選(xuan)擇(ze)材(cai)料(liao)時(shi)
，應(ying)該(gai)綜(zong)合(he)考(kao)慮(lv)材(cai)料(liao)的(de)抗(kang)拉(la)強(qiang)度(du);

　　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

　　suoweijiyaxingmifengjiushizhiyikaomifengcailiaoshouyahouzishenchanshengdehuidanlierdedaomifengnenglideyizhongmifengfangshi。yinweichunxingmifengkenengcunzaiyidingliangdepianxin，suoyixuyaoyikaocailiaodedanxinglaibuchangmifengdejiechuyinglibuzudengwenti。suoyi

，cailiaodedanxingduiyumifengxiaoguodehaohuaizhiguanzhongyao;

　　7、硬度

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