高壓膠管接頭總成(cheng)構(gou)造和性能(neng)的關聯(lian)

１、橡膠軟管總成

1）高壓(ya)膠(jiao)(jiao)(jiao)(jiao)管(guan)由內(nei)(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)、提高層(ceng)和外(wai)膠(jiao)(jiao)(jiao)(jiao)層(ceng)構成(cheng)（如圖例(li)），內(nei)(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)立(li)即與(yu)液壓(ya)油(you)觸碰，故(gu)規定(ding)在長期性(xing)(xing)運行狀態(tai)下不(bu)可受液體浸蝕，能(neng)補漏。在提高層(ceng)功效(xiao)下會(hui)承擔一定(ding)工作壓(ya)力(li)。因而，宜選用丁(ding)腈橡膠(jiao)(jiao)(jiao)(jiao)，除塑膠(jiao)(jiao)(jiao)(jiao)粒外(wai)，危(wei)(wei)害性(xing)(xing)能(neng)的(de)(de)關(guan)(guan)鍵要(yao)(yao)素(su)也有內(nei)(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)的(de)(de)強(qiang)度(du)(du)、薄(bo)厚(hou)和永(yong)(yong)(yong)久(jiu)(jiu)性(xing)(xing)形變(bian)量(liang)。強(qiang)度(du)(du)和永(yong)(yong)(yong)久(jiu)(jiu)性(xing)(xing)形變(bian)量(liang)對密封性(xing)(xing)性(xing)(xing)能(neng)危(wei)(wei)害非常大。一般強(qiang)度(du)(du)高、縮小后的(de)(de)永(yong)(yong)(yong)久(jiu)(jiu)性(xing)(xing)形變(bian)量(liang)小，密封性(xing)(xing)性(xing)(xing)能(neng)則越好。一般是(shi)(shi)在７０～８５邵氏硬度(du)(du)，縮小永(yong)(yong)(yong)久(jiu)(jiu)性(xing)(xing)形變(bian)５０％時。內(nei)(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)薄(bo)厚(hou)建議是(shi)(shi)為１．５～２．５ｍｍ，太厚(hou)會(hui)在壓(ya)扣(kou)時提升其流動率，導致(zhi)不(bu)必要(yao)(yao)的(de)(de)膠(jiao)(jiao)(jiao)(jiao)在接頭芯(xin)套(tao)與(yu)橡膠(jiao)(jiao)(jiao)(jiao)軟管(guan)的(de)(de)觸碰內(nei)(nei)(nei)(nei)孔(kong)內(nei)(nei)(nei)(nei)沉積，減少商品(pin)流通橫(heng)截面(mian)；過薄(bo)會(hui)在壓(ya)扣(kou)時被(bei)壓(ya)裂。另外(wai)內(nei)(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)壁厚(hou)勻稱(cheng)性(xing)(xing)也很重要(yao)(yao)。假(jia)如薄(bo)厚(hou)不(bu)勻，縮小后會(hui)導致(zhi)一面(mian)裂斷、一面(mian)堆膠(jiao)(jiao)(jiao)(jiao)。內(nei)(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)表層(ceng)出(chu)現(xian)的(de)(de)浮銹(xiu)也是(shi)(shi)危(wei)(wei)害性(xing)(xing)能(neng)品(pin)質(zhi)的(de)(de)關(guan)(guan)鍵要(yao)(yao)素(su)。

２）高壓膠(jiao)(jiao)管關鍵借助(zhu)提高層(ceng)(ceng)(ceng)來承受力(li)。手(shou)工(gong)(gong)編織橡膠(jiao)(jiao)軟管是(shi)(shi)靠膠(jiao)(jiao)漿(jiang)與內(nei)外黏(nian)膠(jiao)(jiao)粘(zhan)緊，因為同(tong)(tong)一手(shou)工(gong)(gong)編織層(ceng)(ceng)(ceng)內(nei)不(bu)(bu)銹鋼絲(si)中(zhong)間(jian)的(de)互(hu)相觸(chu)碰，在承擔氣體(ti)壓力(li)的(de)時(shi)候會因分別伸縮式(shi)不(bu)(bu)一而(er)導致不(bu)(bu)銹鋼絲(si)彼此之間(jian)的(de)摩(mo)擦而(er)危(wei)害(hai)其(qi)使(shi)用性(xing)能(neng)。而(er)螺旋波(bo)紋(wen)管是(shi)(shi)由盤繞方位不(bu)(bu)一樣的(de)雙(shuang)層(ceng)(ceng)(ceng)產(chan)生一個工(gong)(gong)作中(zhong)層(ceng)(ceng)(ceng)，在雙(shuang)層(ceng)(ceng)(ceng)中(zhong)間(jian)有(you)正中(zhong)間(jian)膠(jiao)(jiao)，因而(er)同(tong)(tong)一工(gong)(gong)作中(zhong)層(ceng)(ceng)(ceng)的(de)雙(shuang)層(ceng)(ceng)(ceng)不(bu)(bu)銹鋼絲(si)中(zhong)間(jian)沒有(you)交(jiao)接點。因此 不(bu)(bu)容易(yi)在承擔氣體(ti)壓力(li)時(shi)同(tong)(tong)于不(bu)(bu)銹鋼絲(si)間(jian)的(de)交(jiao)叉式(shi)彎折而(er)產(chan)生應力(li)或磨擦磨壞。故使(shi)用性(xing)能(neng)好，能(neng)承擔髙壓。

３）高壓膠(jiao)管的外膠(jiao)層(ceng)粘在提高層(ceng)上起維護功效(xiao)，一般選用(yong)氯(lv)丁膠(jiao)。應留意避免(mian) 其脆化開(kai)裂而危害(hai)全部橡膠(jiao)軟管的使用(yong)壽命。