高壓膠管接頭總成構造和(he)性能(neng)的關(guan)聯(lian)

１、橡膠軟管總成

1）高(gao)壓(ya)膠(jiao)(jiao)(jiao)管由(you)內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)、提高(gao)層(ceng)(ceng)(ceng)和(he)外(wai)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)構成（如圖例(li)），內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)立即與液壓(ya)油觸碰(peng)，故規定在長期性(xing)(xing)運行狀態下不(bu)可受液體(ti)浸蝕，能(neng)補(bu)漏。在提高(gao)層(ceng)(ceng)(ceng)功效下會承擔一(yi)定工作壓(ya)力。因而，宜選(xuan)用丁腈橡膠(jiao)(jiao)(jiao)，除(chu)塑膠(jiao)(jiao)(jiao)粒外(wai)，危害(hai)性(xing)(xing)能(neng)的關(guan)鍵(jian)要(yao)(yao)素(su)也有內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)的強度、薄厚(hou)和(he)永(yong)(yong)久(jiu)(jiu)性(xing)(xing)形變(bian)量(liang)(liang)。強度和(he)永(yong)(yong)久(jiu)(jiu)性(xing)(xing)形變(bian)量(liang)(liang)對密封性(xing)(xing)性(xing)(xing)能(neng)危害(hai)非常(chang)大。一(yi)般強度高(gao)、縮小(xiao)(xiao)后(hou)的永(yong)(yong)久(jiu)(jiu)性(xing)(xing)形變(bian)量(liang)(liang)小(xiao)(xiao)，密封性(xing)(xing)性(xing)(xing)能(neng)則越好。一(yi)般是(shi)在７０～８５邵氏硬度，縮小(xiao)(xiao)永(yong)(yong)久(jiu)(jiu)性(xing)(xing)形變(bian)５０％時(shi)(shi)。內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)薄厚(hou)建(jian)議是(shi)為(wei)１．５～２．５ｍｍ，太厚(hou)會在壓(ya)扣時(shi)(shi)提升其流動率，導致不(bu)必要(yao)(yao)的膠(jiao)(jiao)(jiao)在接頭芯(xin)套與橡膠(jiao)(jiao)(jiao)軟管的觸碰(peng)內(nei)(nei)孔內(nei)(nei)沉(chen)積，減少商品流通橫截(jie)面(mian)(mian)；過薄會在壓(ya)扣時(shi)(shi)被壓(ya)裂。另外(wai)內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)壁厚(hou)勻稱性(xing)(xing)也很重要(yao)(yao)。假如薄厚(hou)不(bu)勻，縮小(xiao)(xiao)后(hou)會導致一(yi)面(mian)(mian)裂斷、一(yi)面(mian)(mian)堆(dui)膠(jiao)(jiao)(jiao)。內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)表(biao)層(ceng)(ceng)(ceng)出(chu)現(xian)的浮銹(xiu)也是(shi)危害(hai)性(xing)(xing)能(neng)品質的關(guan)鍵(jian)要(yao)(yao)素(su)。

２）高壓(ya)膠(jiao)管關(guan)鍵借助提(ti)高層(ceng)(ceng)(ceng)來承受力(li)。手工(gong)編(bian)織(zhi)橡膠(jiao)軟管是靠(kao)膠(jiao)漿與內外黏膠(jiao)粘緊，因為同(tong)一手工(gong)編(bian)織(zhi)層(ceng)(ceng)(ceng)內不(bu)(bu)銹(xiu)鋼絲中間(jian)的(de)(de)互(hu)相觸碰，在承擔(dan)氣(qi)體壓(ya)力(li)的(de)(de)時候會因分別伸縮(suo)式不(bu)(bu)一而(er)(er)導致不(bu)(bu)銹(xiu)鋼絲彼(bi)此(ci)之間(jian)的(de)(de)摩擦而(er)(er)危害其使用性能。而(er)(er)螺旋波(bo)紋管是由盤繞方位不(bu)(bu)一樣的(de)(de)雙層(ceng)(ceng)(ceng)產生(sheng)(sheng)一個工(gong)作(zuo)中層(ceng)(ceng)(ceng)，在雙層(ceng)(ceng)(ceng)中間(jian)有正中間(jian)膠(jiao)，因而(er)(er)同(tong)一工(gong)作(zuo)中層(ceng)(ceng)(ceng)的(de)(de)雙層(ceng)(ceng)(ceng)不(bu)(bu)銹(xiu)鋼絲中間(jian)沒(mei)有交接點。因此(ci) 不(bu)(bu)容易在承擔(dan)氣(qi)體壓(ya)力(li)時同(tong)于(yu)不(bu)(bu)銹(xiu)鋼絲間(jian)的(de)(de)交叉式彎折而(er)(er)產生(sheng)(sheng)應力(li)或(huo)磨擦磨壞。故(gu)使用性能好，能承擔(dan)髙壓(ya)。

３）高壓膠(jiao)管的外膠(jiao)層粘在提高層上起維護功效，一般選用氯丁膠(jiao)。應留意避免 其脆(cui)化開裂而危害全部橡膠(jiao)軟管的使(shi)用壽命。