高壓膠管接頭總(zong)成構(gou)造(zao)和性能的關聯

１、橡膠軟管總成

1）高壓膠(jiao)(jiao)(jiao)管由內(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)、提(ti)高層(ceng)(ceng)和(he)(he)外膠(jiao)(jiao)(jiao)層(ceng)(ceng)構成(cheng)（如(ru)圖例(li)），內(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)立即(ji)與液(ye)壓油觸碰(peng)(peng)，故規定(ding)在長期性(xing)(xing)(xing)運行狀(zhuang)態(tai)下(xia)不(bu)可受液(ye)體(ti)浸蝕，能補(bu)漏。在提(ti)高層(ceng)(ceng)功效下(xia)會(hui)承(cheng)擔一(yi)定(ding)工作壓力。因而，宜選(xuan)用丁(ding)腈橡(xiang)膠(jiao)(jiao)(jiao)，除塑膠(jiao)(jiao)(jiao)粒外，危(wei)害性(xing)(xing)(xing)能的(de)(de)關(guan)鍵要(yao)(yao)素也有內(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)的(de)(de)強(qiang)度、薄(bo)厚(hou)和(he)(he)永久(jiu)(jiu)性(xing)(xing)(xing)形變量。強(qiang)度和(he)(he)永久(jiu)(jiu)性(xing)(xing)(xing)形變量對密(mi)封性(xing)(xing)(xing)性(xing)(xing)(xing)能危(wei)害非(fei)常(chang)大。一(yi)般(ban)強(qiang)度高、縮(suo)(suo)小(xiao)后的(de)(de)永久(jiu)(jiu)性(xing)(xing)(xing)形變量小(xiao)，密(mi)封性(xing)(xing)(xing)性(xing)(xing)(xing)能則越好。一(yi)般(ban)是(shi)在７０～８５邵氏硬度，縮(suo)(suo)小(xiao)永久(jiu)(jiu)性(xing)(xing)(xing)形變５０％時。內(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)薄(bo)厚(hou)建議是(shi)為１．５～２．５ｍｍ，太厚(hou)會(hui)在壓扣時提(ti)升其(qi)流(liu)動率(lv)，導致(zhi)(zhi)不(bu)必要(yao)(yao)的(de)(de)膠(jiao)(jiao)(jiao)在接頭芯(xin)套與橡(xiang)膠(jiao)(jiao)(jiao)軟管的(de)(de)觸碰(peng)(peng)內(nei)孔內(nei)沉積，減(jian)少商品流(liu)通橫截面(mian)；過薄(bo)會(hui)在壓扣時被壓裂。另外內(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)壁厚(hou)勻(yun)(yun)稱性(xing)(xing)(xing)也很重要(yao)(yao)。假如(ru)薄(bo)厚(hou)不(bu)勻(yun)(yun)，縮(suo)(suo)小(xiao)后會(hui)導致(zhi)(zhi)一(yi)面(mian)裂斷、一(yi)面(mian)堆膠(jiao)(jiao)(jiao)。內(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)表層(ceng)(ceng)出(chu)現的(de)(de)浮銹(xiu)也是(shi)危(wei)害性(xing)(xing)(xing)能品質(zhi)的(de)(de)關(guan)鍵要(yao)(yao)素。

２）高壓(ya)膠(jiao)管關鍵借助提(ti)高層(ceng)(ceng)來承(cheng)(cheng)受力(li)。手(shou)工(gong)編(bian)織橡膠(jiao)軟管是靠膠(jiao)漿與內(nei)外黏膠(jiao)粘(zhan)緊，因為同(tong)一(yi)手(shou)工(gong)編(bian)織層(ceng)(ceng)內(nei)不(bu)(bu)(bu)銹鋼(gang)絲(si)中(zhong)(zhong)(zhong)間(jian)的(de)(de)(de)互相觸碰，在承(cheng)(cheng)擔(dan)氣體壓(ya)力(li)的(de)(de)(de)時候會因分(fen)別伸縮式不(bu)(bu)(bu)一(yi)而(er)(er)導致不(bu)(bu)(bu)銹鋼(gang)絲(si)彼此(ci)之間(jian)的(de)(de)(de)摩擦(ca)而(er)(er)危害其(qi)使用性能(neng)。而(er)(er)螺旋波紋管是由盤(pan)繞方位(wei)不(bu)(bu)(bu)一(yi)樣的(de)(de)(de)雙(shuang)層(ceng)(ceng)產生一(yi)個工(gong)作中(zhong)(zhong)(zhong)層(ceng)(ceng)，在雙(shuang)層(ceng)(ceng)中(zhong)(zhong)(zhong)間(jian)有正中(zhong)(zhong)(zhong)間(jian)膠(jiao)，因而(er)(er)同(tong)一(yi)工(gong)作中(zhong)(zhong)(zhong)層(ceng)(ceng)的(de)(de)(de)雙(shuang)層(ceng)(ceng)不(bu)(bu)(bu)銹鋼(gang)絲(si)中(zhong)(zhong)(zhong)間(jian)沒有交(jiao)(jiao)接點。因此(ci) 不(bu)(bu)(bu)容易在承(cheng)(cheng)擔(dan)氣體壓(ya)力(li)時同(tong)于不(bu)(bu)(bu)銹鋼(gang)絲(si)間(jian)的(de)(de)(de)交(jiao)(jiao)叉式彎折而(er)(er)產生應力(li)或(huo)磨(mo)擦(ca)磨(mo)壞。故使用性能(neng)好，能(neng)承(cheng)(cheng)擔(dan)髙(gao)壓(ya)。

３）高壓(ya)膠(jiao)(jiao)管的(de)外膠(jiao)(jiao)層(ceng)粘在提高層(ceng)上(shang)起維護(hu)功效，一(yi)般(ban)選用(yong)氯丁(ding)膠(jiao)(jiao)。應(ying)留意避免 其脆化開(kai)裂而(er)危(wei)害(hai)全部橡膠(jiao)(jiao)軟管的(de)使用(yong)壽命(ming)。