1、橡膠軟管總成
1)高(gao)壓(ya)(ya)膠(jiao)管由內(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)、提(ti)高(gao)層(ceng)(ceng)(ceng)和外(wai)膠(jiao)層(ceng)(ceng)(ceng)構成(如圖例),內(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)立即與液(ye)壓(ya)(ya)油觸碰,故規定在(zai)(zai)長期(qi)性(xing)(xing)(xing)運(yun)行狀(zhuang)態(tai)下(xia)不可(ke)受液(ye)體浸蝕,能(neng)補漏(lou)。在(zai)(zai)提(ti)高(gao)層(ceng)(ceng)(ceng)功效下(xia)會(hui)(hui)承擔(dan)一定工作壓(ya)(ya)力。因而(er),宜(yi)選(xuan)用丁腈橡膠(jiao),除塑膠(jiao)粒外(wai),危(wei)害性(xing)(xing)(xing)能(neng)的(de)(de)關(guan)鍵要(yao)(yao)素也(ye)有內(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)的(de)(de)強(qiang)(qiang)度(du)、薄厚和永久性(xing)(xing)(xing)形變(bian)量(liang)。強(qiang)(qiang)度(du)和永久性(xing)(xing)(xing)形變(bian)量(liang)對密封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)危(wei)害非常大。一般強(qiang)(qiang)度(du)高(gao)、縮(suo)小后的(de)(de)永久性(xing)(xing)(xing)形變(bian)量(liang)小,密封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)則越好。一般是(shi)在(zai)(zai)70~85邵氏硬度(du),縮(suo)小永久性(xing)(xing)(xing)形變(bian)50%時(shi)。內(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)薄厚建議(yi)是(shi)為1.5~2.5mm,太(tai)厚會(hui)(hui)在(zai)(zai)壓(ya)(ya)扣時(shi)提(ti)升其流動(dong)率,導致不必要(yao)(yao)的(de)(de)膠(jiao)在(zai)(zai)接頭芯套與橡膠(jiao)軟管的(de)(de)觸碰內(nei)(nei)孔(kong)內(nei)(nei)沉積,減少商品流通橫截面;過薄會(hui)(hui)在(zai)(zai)壓(ya)(ya)扣時(shi)被壓(ya)(ya)裂。另外(wai)內(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)壁厚勻(yun)稱性(xing)(xing)(xing)也(ye)很重要(yao)(yao)。假(jia)如薄厚不勻(yun),縮(suo)小后會(hui)(hui)導致一面裂斷(duan)、一面堆膠(jiao)。內(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)出現的(de)(de)浮(fu)銹也(ye)是(shi)危(wei)害性(xing)(xing)(xing)能(neng)品質的(de)(de)關(guan)鍵要(yao)(yao)素。
2)高壓膠(jiao)(jiao)管關鍵借(jie)助(zhu)提高層(ceng)(ceng)來承(cheng)受力。手(shou)(shou)工(gong)(gong)編織橡膠(jiao)(jiao)軟管是靠膠(jiao)(jiao)漿與(yu)內(nei)外黏膠(jiao)(jiao)粘緊,因為同一(yi)手(shou)(shou)工(gong)(gong)編織層(ceng)(ceng)內(nei)不銹(xiu)鋼(gang)絲(si)中間(jian)的(de)互相(xiang)觸碰,在(zai)承(cheng)擔(dan)(dan)氣體壓力的(de)時候會因分別伸縮(suo)式不一(yi)而(er)(er)導致不銹(xiu)鋼(gang)絲(si)彼此(ci)之間(jian)的(de)摩擦(ca)而(er)(er)危害(hai)其使用性(xing)能。而(er)(er)螺旋波紋管是由盤繞方(fang)位不一(yi)樣的(de)雙(shuang)層(ceng)(ceng)產生一(yi)個工(gong)(gong)作中層(ceng)(ceng),在(zai)雙(shuang)層(ceng)(ceng)中間(jian)有正中間(jian)膠(jiao)(jiao),因而(er)(er)同一(yi)工(gong)(gong)作中層(ceng)(ceng)的(de)雙(shuang)層(ceng)(ceng)不銹(xiu)鋼(gang)絲(si)中間(jian)沒有交(jiao)接(jie)點。因此(ci) 不容易在(zai)承(cheng)擔(dan)(dan)氣體壓力時同于不銹(xiu)鋼(gang)絲(si)間(jian)的(de)交(jiao)叉式彎折而(er)(er)產生應(ying)力或磨(mo)擦(ca)磨(mo)壞。故使用性(xing)能好,能承(cheng)擔(dan)(dan)髙壓。
3)高壓膠(jiao)(jiao)管的(de)外膠(jiao)(jiao)層粘在提(ti)高層上起維護(hu)功效,一般選用(yong)氯丁(ding)膠(jiao)(jiao)。應(ying)留意避免(mian) 其脆化開裂而危害(hai)全部橡膠(jiao)(jiao)軟管的(de)使用(yong)壽命。