高壓膠管接頭總成(cheng)構造和性(xing)能的(de)關(guan)聯

１、橡膠軟管總成

1）高壓(ya)(ya)膠(jiao)(jiao)管由內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)、提(ti)高層(ceng)(ceng)(ceng)(ceng)和外膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)構成（如圖(tu)例），內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)立(li)即(ji)與液(ye)壓(ya)(ya)油(you)觸碰(peng)，故(gu)規定(ding)在(zai)(zai)長期性(xing)(xing)(xing)運(yun)行狀態下不可受(shou)液(ye)體浸蝕，能(neng)(neng)補漏。在(zai)(zai)提(ti)高層(ceng)(ceng)(ceng)(ceng)功(gong)效(xiao)下會(hui)承(cheng)擔(dan)一(yi)(yi)定(ding)工作壓(ya)(ya)力。因而，宜(yi)選用丁腈橡膠(jiao)(jiao)，除(chu)塑膠(jiao)(jiao)粒外，危害(hai)性(xing)(xing)(xing)能(neng)(neng)的(de)關(guan)鍵(jian)(jian)要素也有內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)的(de)強(qiang)度(du)、薄(bo)(bo)(bo)厚(hou)和永(yong)(yong)久(jiu)(jiu)性(xing)(xing)(xing)形(xing)變量(liang)。強(qiang)度(du)和永(yong)(yong)久(jiu)(jiu)性(xing)(xing)(xing)形(xing)變量(liang)對密封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)(neng)危害(hai)非常大。一(yi)(yi)般強(qiang)度(du)高、縮(suo)(suo)小(xiao)(xiao)后的(de)永(yong)(yong)久(jiu)(jiu)性(xing)(xing)(xing)形(xing)變量(liang)小(xiao)(xiao)，密封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)(neng)則越(yue)好。一(yi)(yi)般是在(zai)(zai)７０～８５邵氏(shi)硬(ying)度(du)，縮(suo)(suo)小(xiao)(xiao)永(yong)(yong)久(jiu)(jiu)性(xing)(xing)(xing)形(xing)變５０％時。內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)薄(bo)(bo)(bo)厚(hou)建議是為１．５～２．５ｍｍ，太厚(hou)會(hui)在(zai)(zai)壓(ya)(ya)扣(kou)時提(ti)升其(qi)流動率，導(dao)致不必要的(de)膠(jiao)(jiao)在(zai)(zai)接頭芯套與橡膠(jiao)(jiao)軟管的(de)觸碰(peng)內(nei)(nei)孔內(nei)(nei)沉(chen)積，減(jian)少商品流通(tong)橫截面(mian)(mian)；過薄(bo)(bo)(bo)會(hui)在(zai)(zai)壓(ya)(ya)扣(kou)時被壓(ya)(ya)裂。另外內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)壁厚(hou)勻(yun)稱性(xing)(xing)(xing)也很重要。假(jia)如薄(bo)(bo)(bo)厚(hou)不勻(yun)，縮(suo)(suo)小(xiao)(xiao)后會(hui)導(dao)致一(yi)(yi)面(mian)(mian)裂斷、一(yi)(yi)面(mian)(mian)堆膠(jiao)(jiao)。內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)(ceng)出現(xian)的(de)浮銹也是危害(hai)性(xing)(xing)(xing)能(neng)(neng)品質的(de)關(guan)鍵(jian)(jian)要素。

２）高(gao)(gao)壓(ya)膠(jiao)(jiao)(jiao)管關鍵借(jie)助提高(gao)(gao)層(ceng)來承受力(li)(li)。手工(gong)編織橡膠(jiao)(jiao)(jiao)軟管是靠膠(jiao)(jiao)(jiao)漿與內(nei)外黏膠(jiao)(jiao)(jiao)粘緊，因為同(tong)一手工(gong)編織層(ceng)內(nei)不(bu)(bu)(bu)銹鋼絲(si)中(zhong)(zhong)間(jian)的(de)互相觸碰，在承擔氣體壓(ya)力(li)(li)的(de)時候(hou)會因分別(bie)伸縮式(shi)不(bu)(bu)(bu)一而(er)導致(zhi)不(bu)(bu)(bu)銹鋼絲(si)彼(bi)此(ci)之(zhi)間(jian)的(de)摩擦(ca)而(er)危害其(qi)使用性(xing)能(neng)。而(er)螺(luo)旋波紋(wen)管是由盤(pan)繞方位不(bu)(bu)(bu)一樣的(de)雙層(ceng)產生一個(ge)工(gong)作(zuo)中(zhong)(zhong)層(ceng)，在雙層(ceng)中(zhong)(zhong)間(jian)有正中(zhong)(zhong)間(jian)膠(jiao)(jiao)(jiao)，因而(er)同(tong)一工(gong)作(zuo)中(zhong)(zhong)層(ceng)的(de)雙層(ceng)不(bu)(bu)(bu)銹鋼絲(si)中(zhong)(zhong)間(jian)沒有交(jiao)接點。因此(ci) 不(bu)(bu)(bu)容(rong)易在承擔氣體壓(ya)力(li)(li)時同(tong)于不(bu)(bu)(bu)銹鋼絲(si)間(jian)的(de)交(jiao)叉式(shi)彎折而(er)產生應力(li)(li)或磨(mo)擦(ca)磨(mo)壞(huai)。故使用性(xing)能(neng)好，能(neng)承擔髙壓(ya)。

３）高(gao)(gao)壓膠(jiao)管的外膠(jiao)層粘在提高(gao)(gao)層上起維護功效，一般(ban)選用氯丁膠(jiao)。應留意避免(mian) 其脆化開裂而危害全部橡(xiang)膠(jiao)軟管的使用壽(shou)命。