高壓膠管接頭總(zong)成(cheng)構造和性能的(de)關(guan)聯

１、橡膠軟管總成

1）高(gao)壓(ya)(ya)膠(jiao)(jiao)(jiao)管由內(nei)膠(jiao)(jiao)(jiao)層(ceng)、提(ti)高(gao)層(ceng)和外(wai)膠(jiao)(jiao)(jiao)層(ceng)構成（如圖例），內(nei)膠(jiao)(jiao)(jiao)層(ceng)立(li)即與液(ye)壓(ya)(ya)油觸碰，故規定在(zai)長期性(xing)(xing)(xing)(xing)運行狀態下不(bu)(bu)(bu)可受液(ye)體浸(jin)蝕，能(neng)(neng)補漏。在(zai)提(ti)高(gao)層(ceng)功效(xiao)下會(hui)承擔一(yi)定工作(zuo)壓(ya)(ya)力。因而，宜(yi)選用丁腈(jing)橡(xiang)膠(jiao)(jiao)(jiao)，除塑膠(jiao)(jiao)(jiao)粒外(wai)，危(wei)害(hai)性(xing)(xing)(xing)(xing)能(neng)(neng)的(de)關鍵要素(su)也(ye)有內(nei)膠(jiao)(jiao)(jiao)層(ceng)的(de)強度、薄(bo)厚和永(yong)(yong)久(jiu)性(xing)(xing)(xing)(xing)形變量。強度和永(yong)(yong)久(jiu)性(xing)(xing)(xing)(xing)形變量對密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)(neng)危(wei)害(hai)非常大。一(yi)般強度高(gao)、縮(suo)(suo)小(xiao)后的(de)永(yong)(yong)久(jiu)性(xing)(xing)(xing)(xing)形變量小(xiao)，密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)(neng)則(ze)越好(hao)。一(yi)般是在(zai)７０～８５邵氏硬度，縮(suo)(suo)小(xiao)永(yong)(yong)久(jiu)性(xing)(xing)(xing)(xing)形變５０％時(shi)。內(nei)膠(jiao)(jiao)(jiao)層(ceng)薄(bo)厚建(jian)議是為１．５～２．５ｍｍ，太厚會(hui)在(zai)壓(ya)(ya)扣時(shi)提(ti)升(sheng)其流(liu)動(dong)率，導致不(bu)(bu)(bu)必要的(de)膠(jiao)(jiao)(jiao)在(zai)接頭芯套與橡(xiang)膠(jiao)(jiao)(jiao)軟管的(de)觸碰內(nei)孔內(nei)沉積(ji)，減少商(shang)品(pin)流(liu)通橫截面(mian)；過(guo)薄(bo)會(hui)在(zai)壓(ya)(ya)扣時(shi)被壓(ya)(ya)裂。另外(wai)內(nei)膠(jiao)(jiao)(jiao)層(ceng)壁(bi)厚勻稱性(xing)(xing)(xing)(xing)也(ye)很重要。假如薄(bo)厚不(bu)(bu)(bu)勻，縮(suo)(suo)小(xiao)后會(hui)導致一(yi)面(mian)裂斷、一(yi)面(mian)堆膠(jiao)(jiao)(jiao)。內(nei)膠(jiao)(jiao)(jiao)層(ceng)表層(ceng)出現的(de)浮(fu)銹也(ye)是危(wei)害(hai)性(xing)(xing)(xing)(xing)能(neng)(neng)品(pin)質(zhi)的(de)關鍵要素(su)。

２）高壓(ya)膠(jiao)管關鍵借(jie)助提高層來(lai)承(cheng)受(shou)力。手工(gong)編(bian)織橡(xiang)膠(jiao)軟管是靠膠(jiao)漿與內外黏膠(jiao)粘緊，因(yin)(yin)(yin)為同(tong)一(yi)手工(gong)編(bian)織層內不(bu)銹(xiu)鋼(gang)絲中(zhong)(zhong)(zhong)間(jian)的(de)互(hu)相觸碰(peng)，在承(cheng)擔(dan)氣體壓(ya)力的(de)時(shi)候會因(yin)(yin)(yin)分別伸縮式不(bu)一(yi)而(er)(er)導致不(bu)銹(xiu)鋼(gang)絲彼此(ci)之間(jian)的(de)摩擦(ca)而(er)(er)危害其使用性能(neng)(neng)。而(er)(er)螺旋波紋管是由(you)盤繞方位不(bu)一(yi)樣的(de)雙層產生一(yi)個工(gong)作中(zhong)(zhong)(zhong)層，在雙層中(zhong)(zhong)(zhong)間(jian)有(you)正中(zhong)(zhong)(zhong)間(jian)膠(jiao)，因(yin)(yin)(yin)而(er)(er)同(tong)一(yi)工(gong)作中(zhong)(zhong)(zhong)層的(de)雙層不(bu)銹(xiu)鋼(gang)絲中(zhong)(zhong)(zhong)間(jian)沒(mei)有(you)交接(jie)點。因(yin)(yin)(yin)此(ci) 不(bu)容(rong)易在承(cheng)擔(dan)氣體壓(ya)力時(shi)同(tong)于不(bu)銹(xiu)鋼(gang)絲間(jian)的(de)交叉式彎折而(er)(er)產生應(ying)力或(huo)磨擦(ca)磨壞。故使用性能(neng)(neng)好，能(neng)(neng)承(cheng)擔(dan)髙(gao)壓(ya)。

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