高壓膠管接頭總(zong)成(cheng)構造和性能的(de)關聯

１、橡膠軟管總成

1）高(gao)壓(ya)(ya)膠(jiao)(jiao)管(guan)(guan)由內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)、提(ti)高(gao)層(ceng)(ceng)和(he)外(wai)膠(jiao)(jiao)層(ceng)(ceng)構(gou)成（如圖(tu)例），內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)立即與液壓(ya)(ya)油觸(chu)碰，故規定在長期性(xing)(xing)運行狀(zhuang)態下(xia)不(bu)可受(shou)液體浸蝕(shi)，能補漏。在提(ti)高(gao)層(ceng)(ceng)功效下(xia)會(hui)(hui)承擔(dan)一(yi)定工作壓(ya)(ya)力。因而，宜選用丁腈橡膠(jiao)(jiao)，除塑膠(jiao)(jiao)粒外(wai)，危(wei)害性(xing)(xing)能的(de)關鍵(jian)要(yao)素也(ye)有內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)的(de)強(qiang)(qiang)度、薄(bo)厚(hou)和(he)永久(jiu)(jiu)性(xing)(xing)形變(bian)量。強(qiang)(qiang)度和(he)永久(jiu)(jiu)性(xing)(xing)形變(bian)量對密(mi)封性(xing)(xing)性(xing)(xing)能危(wei)害非常大(da)。一(yi)般(ban)強(qiang)(qiang)度高(gao)、縮小后的(de)永久(jiu)(jiu)性(xing)(xing)形變(bian)量小，密(mi)封性(xing)(xing)性(xing)(xing)能則越(yue)好。一(yi)般(ban)是在７０～８５邵氏硬(ying)度，縮小永久(jiu)(jiu)性(xing)(xing)形變(bian)５０％時。內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)薄(bo)厚(hou)建(jian)議是為１．５～２．５ｍｍ，太厚(hou)會(hui)(hui)在壓(ya)(ya)扣時提(ti)升其流動率，導(dao)致不(bu)必要(yao)的(de)膠(jiao)(jiao)在接頭(tou)芯(xin)套與橡膠(jiao)(jiao)軟(ruan)管(guan)(guan)的(de)觸(chu)碰內(nei)(nei)孔內(nei)(nei)沉積，減少商品流通(tong)橫(heng)截面(mian)；過薄(bo)會(hui)(hui)在壓(ya)(ya)扣時被(bei)壓(ya)(ya)裂。另外(wai)內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)壁厚(hou)勻(yun)稱性(xing)(xing)也(ye)很重要(yao)。假如薄(bo)厚(hou)不(bu)勻(yun)，縮小后會(hui)(hui)導(dao)致一(yi)面(mian)裂斷、一(yi)面(mian)堆膠(jiao)(jiao)。內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)表層(ceng)(ceng)出現的(de)浮銹也(ye)是危(wei)害性(xing)(xing)能品質的(de)關鍵(jian)要(yao)素。

２）高壓膠管關鍵借(jie)助提高層來承(cheng)(cheng)受力(li)(li)。手工編織(zhi)橡膠軟(ruan)管是靠膠漿與內外黏膠粘緊，因(yin)為(wei)同一手工編織(zhi)層內不(bu)銹鋼(gang)(gang)絲中(zhong)(zhong)(zhong)(zhong)(zhong)間的互相觸碰，在承(cheng)(cheng)擔氣(qi)體壓力(li)(li)的時(shi)(shi)候會因(yin)分別伸縮式(shi)不(bu)一而導致不(bu)銹鋼(gang)(gang)絲彼此(ci)之間的摩擦而危(wei)害其使用性能(neng)。而螺旋波(bo)紋(wen)管是由盤(pan)繞(rao)方位不(bu)一樣的雙層產生一個工作(zuo)(zuo)中(zhong)(zhong)(zhong)(zhong)(zhong)層，在雙層中(zhong)(zhong)(zhong)(zhong)(zhong)間有(you)正中(zhong)(zhong)(zhong)(zhong)(zhong)間膠，因(yin)而同一工作(zuo)(zuo)中(zhong)(zhong)(zhong)(zhong)(zhong)層的雙層不(bu)銹鋼(gang)(gang)絲中(zhong)(zhong)(zhong)(zhong)(zhong)間沒有(you)交接點。因(yin)此(ci) 不(bu)容易(yi)在承(cheng)(cheng)擔氣(qi)體壓力(li)(li)時(shi)(shi)同于不(bu)銹鋼(gang)(gang)絲間的交叉式(shi)彎折(zhe)而產生應力(li)(li)或(huo)磨擦磨壞。故(gu)使用性能(neng)好，能(neng)承(cheng)(cheng)擔髙壓。

３）高(gao)(gao)壓膠管(guan)的(de)(de)外膠層粘在(zai)提高(gao)(gao)層上起維護功效，一般選用氯(lv)丁(ding)膠。應留意避免 其脆化開裂而危害(hai)全部橡膠軟(ruan)管(guan)的(de)(de)使用壽(shou)命。