1、橡膠軟管總成
1)高壓(ya)膠(jiao)(jiao)(jiao)管(guan)由(you)內(nei)膠(jiao)(jiao)(jiao)層(ceng)、提(ti)高層(ceng)和(he)外(wai)(wai)膠(jiao)(jiao)(jiao)層(ceng)構(gou)成(如(ru)圖例(li)),內(nei)膠(jiao)(jiao)(jiao)層(ceng)立即與液壓(ya)油觸(chu)碰(peng),故規定(ding)在(zai)長期(qi)性(xing)(xing)(xing)運(yun)行狀(zhuang)態下(xia)不(bu)可受液體浸蝕,能(neng)補(bu)漏。在(zai)提(ti)高層(ceng)功效(xiao)下(xia)會(hui)承擔一(yi)定(ding)工作壓(ya)力。因而,宜(yi)選用(yong)丁(ding)腈橡膠(jiao)(jiao)(jiao),除塑膠(jiao)(jiao)(jiao)粒(li)外(wai)(wai),危害性(xing)(xing)(xing)能(neng)的關(guan)鍵要(yao)素(su)也(ye)有內(nei)膠(jiao)(jiao)(jiao)層(ceng)的強(qiang)(qiang)度、薄(bo)(bo)厚(hou)(hou)和(he)永(yong)久(jiu)性(xing)(xing)(xing)形變量(liang)。強(qiang)(qiang)度和(he)永(yong)久(jiu)性(xing)(xing)(xing)形變量(liang)對密封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)危害非常大。一(yi)般(ban)強(qiang)(qiang)度高、縮小后(hou)的永(yong)久(jiu)性(xing)(xing)(xing)形變量(liang)小,密封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)則(ze)越好(hao)。一(yi)般(ban)是(shi)(shi)在(zai)70~85邵(shao)氏硬(ying)度,縮小永(yong)久(jiu)性(xing)(xing)(xing)形變50%時。內(nei)膠(jiao)(jiao)(jiao)層(ceng)薄(bo)(bo)厚(hou)(hou)建議(yi)是(shi)(shi)為1.5~2.5mm,太厚(hou)(hou)會(hui)在(zai)壓(ya)扣(kou)時提(ti)升其流動率(lv),導(dao)(dao)致不(bu)必要(yao)的膠(jiao)(jiao)(jiao)在(zai)接頭芯套與橡膠(jiao)(jiao)(jiao)軟(ruan)管(guan)的觸(chu)碰(peng)內(nei)孔內(nei)沉積,減(jian)少商品(pin)流通橫截面;過(guo)薄(bo)(bo)會(hui)在(zai)壓(ya)扣(kou)時被壓(ya)裂(lie)。另(ling)外(wai)(wai)內(nei)膠(jiao)(jiao)(jiao)層(ceng)壁(bi)厚(hou)(hou)勻稱性(xing)(xing)(xing)也(ye)很重(zhong)要(yao)。假(jia)如(ru)薄(bo)(bo)厚(hou)(hou)不(bu)勻,縮小后(hou)會(hui)導(dao)(dao)致一(yi)面裂(lie)斷(duan)、一(yi)面堆膠(jiao)(jiao)(jiao)。內(nei)膠(jiao)(jiao)(jiao)層(ceng)表層(ceng)出現的浮(fu)銹也(ye)是(shi)(shi)危害性(xing)(xing)(xing)能(neng)品(pin)質的關(guan)鍵要(yao)素(su)。
2)高(gao)壓(ya)膠(jiao)(jiao)管關鍵借(jie)助(zhu)提高(gao)層(ceng)來承(cheng)受(shou)力。手工編(bian)(bian)織(zhi)橡膠(jiao)(jiao)軟(ruan)管是靠(kao)膠(jiao)(jiao)漿與內外黏膠(jiao)(jiao)粘緊,因(yin)為同一(yi)(yi)手工編(bian)(bian)織(zhi)層(ceng)內不(bu)(bu)(bu)銹(xiu)鋼絲(si)(si)中(zhong)間(jian)(jian)的(de)(de)互相(xiang)觸(chu)碰,在(zai)承(cheng)擔(dan)氣(qi)體(ti)(ti)壓(ya)力的(de)(de)時候會因(yin)分(fen)別伸(shen)縮式不(bu)(bu)(bu)一(yi)(yi)而(er)(er)導致不(bu)(bu)(bu)銹(xiu)鋼絲(si)(si)彼(bi)此之間(jian)(jian)的(de)(de)摩擦(ca)而(er)(er)危害其(qi)使(shi)用(yong)性能。而(er)(er)螺旋波紋管是由盤繞方位(wei)不(bu)(bu)(bu)一(yi)(yi)樣(yang)的(de)(de)雙層(ceng)產(chan)(chan)生一(yi)(yi)個工作中(zhong)層(ceng),在(zai)雙層(ceng)中(zhong)間(jian)(jian)有正中(zhong)間(jian)(jian)膠(jiao)(jiao),因(yin)而(er)(er)同一(yi)(yi)工作中(zhong)層(ceng)的(de)(de)雙層(ceng)不(bu)(bu)(bu)銹(xiu)鋼絲(si)(si)中(zhong)間(jian)(jian)沒有交接(jie)點。因(yin)此 不(bu)(bu)(bu)容易在(zai)承(cheng)擔(dan)氣(qi)體(ti)(ti)壓(ya)力時同于不(bu)(bu)(bu)銹(xiu)鋼絲(si)(si)間(jian)(jian)的(de)(de)交叉式彎折(zhe)而(er)(er)產(chan)(chan)生應力或磨(mo)擦(ca)磨(mo)壞。故使(shi)用(yong)性能好(hao),能承(cheng)擔(dan)髙壓(ya)。
3)高(gao)壓(ya)膠管的外膠層(ceng)粘(zhan)在提高(gao)層(ceng)上起維護功效,一般(ban)選(xuan)用氯丁膠。應留意避免 其(qi)脆化(hua)開裂而危害全部橡膠軟管的使用壽命。