高壓膠管接頭總(zong)成構(gou)造和性(xing)能的關聯

１、橡膠軟管總成

1）高(gao)壓(ya)膠(jiao)(jiao)(jiao)(jiao)管由內(nei)膠(jiao)(jiao)(jiao)(jiao)層、提(ti)(ti)高(gao)層和(he)外(wai)膠(jiao)(jiao)(jiao)(jiao)層構成（如(ru)圖例），內(nei)膠(jiao)(jiao)(jiao)(jiao)層立即與液壓(ya)油觸(chu)碰，故規定(ding)在(zai)(zai)長(chang)期(qi)性(xing)(xing)(xing)運(yun)行狀態(tai)下不可受液體(ti)浸蝕(shi)，能(neng)補漏。在(zai)(zai)提(ti)(ti)高(gao)層功效下會(hui)承(cheng)擔(dan)一(yi)定(ding)工(gong)作壓(ya)力(li)。因(yin)而，宜(yi)選用丁腈橡(xiang)膠(jiao)(jiao)(jiao)(jiao)，除塑膠(jiao)(jiao)(jiao)(jiao)粒外(wai)，危害(hai)(hai)性(xing)(xing)(xing)能(neng)的(de)(de)關鍵要(yao)(yao)素也(ye)(ye)有內(nei)膠(jiao)(jiao)(jiao)(jiao)層的(de)(de)強(qiang)度、薄厚(hou)和(he)永久(jiu)性(xing)(xing)(xing)形變量(liang)(liang)。強(qiang)度和(he)永久(jiu)性(xing)(xing)(xing)形變量(liang)(liang)對密封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)危害(hai)(hai)非(fei)常大。一(yi)般強(qiang)度高(gao)、縮小后(hou)的(de)(de)永久(jiu)性(xing)(xing)(xing)形變量(liang)(liang)小，密封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)則越好。一(yi)般是(shi)在(zai)(zai)７０～８５邵(shao)氏硬度，縮小永久(jiu)性(xing)(xing)(xing)形變５０％時(shi)。內(nei)膠(jiao)(jiao)(jiao)(jiao)層薄厚(hou)建議是(shi)為１．５～２．５ｍｍ，太厚(hou)會(hui)在(zai)(zai)壓(ya)扣時(shi)提(ti)(ti)升其流(liu)動(dong)率，導致不必要(yao)(yao)的(de)(de)膠(jiao)(jiao)(jiao)(jiao)在(zai)(zai)接(jie)頭(tou)芯套與橡(xiang)膠(jiao)(jiao)(jiao)(jiao)軟管的(de)(de)觸(chu)碰內(nei)孔內(nei)沉積(ji)，減少商品(pin)流(liu)通(tong)橫截面(mian)(mian)；過薄會(hui)在(zai)(zai)壓(ya)扣時(shi)被壓(ya)裂(lie)。另外(wai)內(nei)膠(jiao)(jiao)(jiao)(jiao)層壁厚(hou)勻(yun)稱性(xing)(xing)(xing)也(ye)(ye)很重要(yao)(yao)。假如(ru)薄厚(hou)不勻(yun)，縮小后(hou)會(hui)導致一(yi)面(mian)(mian)裂(lie)斷、一(yi)面(mian)(mian)堆膠(jiao)(jiao)(jiao)(jiao)。內(nei)膠(jiao)(jiao)(jiao)(jiao)層表(biao)層出現的(de)(de)浮(fu)銹也(ye)(ye)是(shi)危害(hai)(hai)性(xing)(xing)(xing)能(neng)品(pin)質的(de)(de)關鍵要(yao)(yao)素。

２）高(gao)壓膠(jiao)管關鍵借(jie)助提(ti)高(gao)層(ceng)(ceng)(ceng)來(lai)承受力(li)。手(shou)工(gong)編(bian)織橡膠(jiao)軟管是(shi)靠(kao)膠(jiao)漿與內(nei)外黏膠(jiao)粘緊，因(yin)為同(tong)一(yi)手(shou)工(gong)編(bian)織層(ceng)(ceng)(ceng)內(nei)不(bu)(bu)銹(xiu)鋼(gang)(gang)絲(si)(si)(si)中(zhong)間(jian)(jian)的(de)互相觸碰，在(zai)(zai)承擔(dan)(dan)氣體壓力(li)的(de)時(shi)候會(hui)因(yin)分別伸縮式不(bu)(bu)一(yi)而(er)(er)導致(zhi)不(bu)(bu)銹(xiu)鋼(gang)(gang)絲(si)(si)(si)彼此(ci)之間(jian)(jian)的(de)摩擦而(er)(er)危害其使(shi)用(yong)性(xing)能(neng)。而(er)(er)螺旋波紋管是(shi)由(you)盤繞方位不(bu)(bu)一(yi)樣的(de)雙(shuang)層(ceng)(ceng)(ceng)產生一(yi)個工(gong)作中(zhong)層(ceng)(ceng)(ceng)，在(zai)(zai)雙(shuang)層(ceng)(ceng)(ceng)中(zhong)間(jian)(jian)有正中(zhong)間(jian)(jian)膠(jiao)，因(yin)而(er)(er)同(tong)一(yi)工(gong)作中(zhong)層(ceng)(ceng)(ceng)的(de)雙(shuang)層(ceng)(ceng)(ceng)不(bu)(bu)銹(xiu)鋼(gang)(gang)絲(si)(si)(si)中(zhong)間(jian)(jian)沒有交接點(dian)。因(yin)此(ci) 不(bu)(bu)容易在(zai)(zai)承擔(dan)(dan)氣體壓力(li)時(shi)同(tong)于(yu)不(bu)(bu)銹(xiu)鋼(gang)(gang)絲(si)(si)(si)間(jian)(jian)的(de)交叉式彎折而(er)(er)產生應力(li)或(huo)磨擦磨壞。故使(shi)用(yong)性(xing)能(neng)好，能(neng)承擔(dan)(dan)髙壓。

３）高(gao)壓(ya)膠(jiao)管的外(wai)膠(jiao)層粘(zhan)在提高(gao)層上起維護功效，一般選用(yong)氯丁膠(jiao)。應留意避免 其脆(cui)化開裂而危害全部橡(xiang)膠(jiao)軟(ruan)管的使用(yong)壽命(ming)。