高壓膠管接頭總(zong)成(cheng)構造(zao)和性(xing)能的關聯

１、橡膠軟管總成

1）高(gao)(gao)壓(ya)膠(jiao)管由(you)內(nei)膠(jiao)層(ceng)(ceng)、提(ti)高(gao)(gao)層(ceng)(ceng)和(he)外膠(jiao)層(ceng)(ceng)構成（如圖例），內(nei)膠(jiao)層(ceng)(ceng)立(li)即與(yu)液壓(ya)油觸碰，故規定(ding)在長期性(xing)(xing)(xing)(xing)運行狀態下不可受液體(ti)浸蝕(shi)，能(neng)補漏。在提(ti)高(gao)(gao)層(ceng)(ceng)功效下會(hui)承(cheng)擔一(yi)定(ding)工作壓(ya)力。因而，宜(yi)選(xuan)用丁腈橡(xiang)膠(jiao)，除塑膠(jiao)粒外，危害(hai)性(xing)(xing)(xing)(xing)能(neng)的(de)(de)(de)關鍵要(yao)(yao)素(su)也(ye)(ye)有內(nei)膠(jiao)層(ceng)(ceng)的(de)(de)(de)強度(du)(du)、薄厚和(he)永(yong)(yong)久(jiu)性(xing)(xing)(xing)(xing)形(xing)變(bian)量。強度(du)(du)和(he)永(yong)(yong)久(jiu)性(xing)(xing)(xing)(xing)形(xing)變(bian)量對密(mi)封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)危害(hai)非常(chang)大(da)。一(yi)般強度(du)(du)高(gao)(gao)、縮小后的(de)(de)(de)永(yong)(yong)久(jiu)性(xing)(xing)(xing)(xing)形(xing)變(bian)量小，密(mi)封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)則(ze)越好。一(yi)般是(shi)(shi)在７０～８５邵氏硬度(du)(du)，縮小永(yong)(yong)久(jiu)性(xing)(xing)(xing)(xing)形(xing)變(bian)５０％時(shi)(shi)。內(nei)膠(jiao)層(ceng)(ceng)薄厚建議是(shi)(shi)為１．５～２．５ｍｍ，太厚會(hui)在壓(ya)扣時(shi)(shi)提(ti)升(sheng)其流(liu)動率，導(dao)致不必要(yao)(yao)的(de)(de)(de)膠(jiao)在接頭(tou)芯套與(yu)橡(xiang)膠(jiao)軟管的(de)(de)(de)觸碰內(nei)孔內(nei)沉積，減(jian)少(shao)商品流(liu)通橫截面(mian)；過薄會(hui)在壓(ya)扣時(shi)(shi)被(bei)壓(ya)裂。另外內(nei)膠(jiao)層(ceng)(ceng)壁厚勻稱性(xing)(xing)(xing)(xing)也(ye)(ye)很重要(yao)(yao)。假如薄厚不勻，縮小后會(hui)導(dao)致一(yi)面(mian)裂斷、一(yi)面(mian)堆膠(jiao)。內(nei)膠(jiao)層(ceng)(ceng)表層(ceng)(ceng)出現的(de)(de)(de)浮銹也(ye)(ye)是(shi)(shi)危害(hai)性(xing)(xing)(xing)(xing)能(neng)品質的(de)(de)(de)關鍵要(yao)(yao)素(su)。

２）高壓(ya)膠(jiao)管(guan)關鍵借助提高層來承(cheng)受力。手(shou)工(gong)編(bian)織(zhi)橡(xiang)膠(jiao)軟管(guan)是靠膠(jiao)漿(jiang)與內外黏膠(jiao)粘(zhan)緊，因為同一手(shou)工(gong)編(bian)織(zhi)層內不(bu)(bu)銹鋼(gang)(gang)絲(si)中(zhong)間(jian)(jian)(jian)的互相觸碰，在(zai)(zai)承(cheng)擔(dan)氣(qi)體(ti)壓(ya)力的時(shi)候(hou)會因分別伸(shen)縮式(shi)不(bu)(bu)一而(er)(er)導(dao)致(zhi)不(bu)(bu)銹鋼(gang)(gang)絲(si)彼此(ci)之間(jian)(jian)(jian)的摩擦而(er)(er)危害其使(shi)用性(xing)(xing)能(neng)。而(er)(er)螺旋波紋管(guan)是由盤繞方位不(bu)(bu)一樣(yang)的雙層產生一個工(gong)作中(zhong)層，在(zai)(zai)雙層中(zhong)間(jian)(jian)(jian)有正中(zhong)間(jian)(jian)(jian)膠(jiao)，因而(er)(er)同一工(gong)作中(zhong)層的雙層不(bu)(bu)銹鋼(gang)(gang)絲(si)中(zhong)間(jian)(jian)(jian)沒有交接點。因此(ci) 不(bu)(bu)容易在(zai)(zai)承(cheng)擔(dan)氣(qi)體(ti)壓(ya)力時(shi)同于不(bu)(bu)銹鋼(gang)(gang)絲(si)間(jian)(jian)(jian)的交叉式(shi)彎折(zhe)而(er)(er)產生應力或磨(mo)擦磨(mo)壞(huai)。故使(shi)用性(xing)(xing)能(neng)好，能(neng)承(cheng)擔(dan)髙壓(ya)。

３）高(gao)壓膠(jiao)管(guan)的外膠(jiao)層(ceng)粘在提高(gao)層(ceng)上起維(wei)護功效，一般選用氯丁膠(jiao)。應留意(yi)避免 其脆化開裂而危害全部橡(xiang)膠(jiao)軟管(guan)的使用壽(shou)命(ming)。