高壓膠管接頭總(zong)成(cheng)構造和性能的關(guan)聯

１、橡膠軟管總成

1）高壓(ya)膠(jiao)(jiao)(jiao)(jiao)管由內膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)、提(ti)高層(ceng)(ceng)(ceng)(ceng)和(he)外膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)構成（如圖例），內膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)立即與(yu)液(ye)壓(ya)油觸碰，故規定(ding)在(zai)長期性(xing)(xing)(xing)(xing)運行狀(zhuang)態下不(bu)可受液(ye)體浸(jin)蝕(shi)，能(neng)補漏(lou)。在(zai)提(ti)高層(ceng)(ceng)(ceng)(ceng)功效下會承擔一(yi)定(ding)工作壓(ya)力。因而，宜選用丁腈橡膠(jiao)(jiao)(jiao)(jiao)，除(chu)塑膠(jiao)(jiao)(jiao)(jiao)粒外，危害(hai)性(xing)(xing)(xing)(xing)能(neng)的(de)(de)(de)關鍵(jian)要(yao)素也(ye)有內膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)強度、薄厚(hou)(hou)和(he)永久(jiu)性(xing)(xing)(xing)(xing)形變量(liang)。強度和(he)永久(jiu)性(xing)(xing)(xing)(xing)形變量(liang)對密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)危害(hai)非(fei)常大。一(yi)般強度高、縮(suo)小后的(de)(de)(de)永久(jiu)性(xing)(xing)(xing)(xing)形變量(liang)小，密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)則越好。一(yi)般是在(zai)７０～８５邵(shao)氏硬(ying)度，縮(suo)小永久(jiu)性(xing)(xing)(xing)(xing)形變５０％時。內膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)薄厚(hou)(hou)建議是為１．５～２．５ｍｍ，太(tai)厚(hou)(hou)會在(zai)壓(ya)扣時提(ti)升其流動率(lv)，導致(zhi)(zhi)不(bu)必要(yao)的(de)(de)(de)膠(jiao)(jiao)(jiao)(jiao)在(zai)接(jie)頭(tou)芯套與(yu)橡膠(jiao)(jiao)(jiao)(jiao)軟管的(de)(de)(de)觸碰內孔(kong)內沉積(ji)，減少商品流通橫截面(mian)(mian)(mian)；過薄會在(zai)壓(ya)扣時被壓(ya)裂(lie)。另(ling)外內膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)壁(bi)厚(hou)(hou)勻稱性(xing)(xing)(xing)(xing)也(ye)很重(zhong)要(yao)。假如薄厚(hou)(hou)不(bu)勻，縮(suo)小后會導致(zhi)(zhi)一(yi)面(mian)(mian)(mian)裂(lie)斷、一(yi)面(mian)(mian)(mian)堆(dui)膠(jiao)(jiao)(jiao)(jiao)。內膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)(ceng)出現(xian)的(de)(de)(de)浮銹(xiu)也(ye)是危害(hai)性(xing)(xing)(xing)(xing)能(neng)品質(zhi)的(de)(de)(de)關鍵(jian)要(yao)素。

２）高壓膠(jiao)管(guan)關鍵借助提高層(ceng)(ceng)來承(cheng)受力(li)(li)。手(shou)工(gong)(gong)編(bian)織(zhi)橡膠(jiao)軟管(guan)是靠膠(jiao)漿與內外(wai)黏(nian)膠(jiao)粘緊，因為同一手(shou)工(gong)(gong)編(bian)織(zhi)層(ceng)(ceng)內不(bu)銹(xiu)鋼(gang)絲(si)(si)中(zhong)間(jian)(jian)的(de)互相觸碰，在(zai)承(cheng)擔氣(qi)體壓力(li)(li)的(de)時候(hou)會因分別伸縮(suo)式(shi)不(bu)一而(er)導(dao)致不(bu)銹(xiu)鋼(gang)絲(si)(si)彼此(ci)之間(jian)(jian)的(de)摩擦(ca)而(er)危害其(qi)使用性(xing)能。而(er)螺旋波紋管(guan)是由盤繞方(fang)位不(bu)一樣的(de)雙層(ceng)(ceng)產生一個工(gong)(gong)作(zuo)(zuo)中(zhong)層(ceng)(ceng)，在(zai)雙層(ceng)(ceng)中(zhong)間(jian)(jian)有(you)(you)正中(zhong)間(jian)(jian)膠(jiao)，因而(er)同一工(gong)(gong)作(zuo)(zuo)中(zhong)層(ceng)(ceng)的(de)雙層(ceng)(ceng)不(bu)銹(xiu)鋼(gang)絲(si)(si)中(zhong)間(jian)(jian)沒有(you)(you)交接點。因此(ci) 不(bu)容易(yi)在(zai)承(cheng)擔氣(qi)體壓力(li)(li)時同于不(bu)銹(xiu)鋼(gang)絲(si)(si)間(jian)(jian)的(de)交叉式(shi)彎折而(er)產生應力(li)(li)或磨擦(ca)磨壞。故使用性(xing)能好，能承(cheng)擔髙壓。

３）高(gao)(gao)壓膠管(guan)的外膠層粘在提(ti)高(gao)(gao)層上起維護功效(xiao)，一般(ban)選用氯丁膠。應留意避免(mian) 其脆化開裂而危害全部橡膠軟管(guan)的使用壽(shou)命。