高壓膠管接頭總(zong)成構造和性能的(de)關(guan)聯

１、橡膠軟管總成

1）高(gao)(gao)(gao)壓(ya)膠(jiao)(jiao)管由內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)、提高(gao)(gao)(gao)層(ceng)(ceng)(ceng)和外膠(jiao)(jiao)層(ceng)(ceng)(ceng)構成（如圖例），內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)立(li)即與液壓(ya)油觸碰(peng)，故規定(ding)在長期(qi)性運行(xing)狀(zhuang)態下(xia)不可受液體浸蝕，能補漏。在提高(gao)(gao)(gao)層(ceng)(ceng)(ceng)功效下(xia)會(hui)(hui)(hui)承擔(dan)一定(ding)工作壓(ya)力(li)。因而，宜選用丁腈橡(xiang)膠(jiao)(jiao)，除塑膠(jiao)(jiao)粒外，危害(hai)性能的(de)(de)關鍵(jian)要素也(ye)有內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)的(de)(de)強(qiang)度、薄(bo)厚和永(yong)(yong)久(jiu)性形(xing)變量(liang)(liang)。強(qiang)度和永(yong)(yong)久(jiu)性形(xing)變量(liang)(liang)對密封性性能危害(hai)非(fei)常大。一般強(qiang)度高(gao)(gao)(gao)、縮小(xiao)(xiao)后的(de)(de)永(yong)(yong)久(jiu)性形(xing)變量(liang)(liang)小(xiao)(xiao)，密封性性能則越好。一般是在７０～８５邵(shao)氏硬度，縮小(xiao)(xiao)永(yong)(yong)久(jiu)性形(xing)變５０％時(shi)。內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)薄(bo)厚建議是為１．５～２．５ｍｍ，太厚會(hui)(hui)(hui)在壓(ya)扣時(shi)提升其流動(dong)率，導(dao)致不必要的(de)(de)膠(jiao)(jiao)在接(jie)頭芯(xin)套與橡(xiang)膠(jiao)(jiao)軟管的(de)(de)觸碰(peng)內(nei)孔(kong)內(nei)沉積(ji)，減少商品流通橫截面；過薄(bo)會(hui)(hui)(hui)在壓(ya)扣時(shi)被壓(ya)裂(lie)(lie)。另外內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)壁(bi)厚勻稱性也(ye)很重要。假如薄(bo)厚不勻，縮小(xiao)(xiao)后會(hui)(hui)(hui)導(dao)致一面裂(lie)(lie)斷、一面堆(dui)膠(jiao)(jiao)。內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)出現的(de)(de)浮銹也(ye)是危害(hai)性能品質(zhi)的(de)(de)關鍵(jian)要素。

２）高壓(ya)膠(jiao)(jiao)管關(guan)鍵(jian)借助提(ti)高層來承(cheng)受力。手(shou)工(gong)(gong)編(bian)織(zhi)橡膠(jiao)(jiao)軟管是靠(kao)膠(jiao)(jiao)漿與內外黏膠(jiao)(jiao)粘緊，因(yin)為同一手(shou)工(gong)(gong)編(bian)織(zhi)層內不(bu)銹鋼(gang)(gang)絲中(zhong)(zhong)(zhong)(zhong)間的(de)互相觸(chu)碰，在承(cheng)擔(dan)氣(qi)體壓(ya)力的(de)時(shi)(shi)候會因(yin)分別伸縮(suo)式不(bu)一而導致不(bu)銹鋼(gang)(gang)絲彼(bi)此(ci)之間的(de)摩擦(ca)而危害其使用(yong)性能。而螺(luo)旋波紋管是由盤(pan)繞(rao)方位不(bu)一樣的(de)雙層產生一個工(gong)(gong)作中(zhong)(zhong)(zhong)(zhong)層，在雙層中(zhong)(zhong)(zhong)(zhong)間有(you)正中(zhong)(zhong)(zhong)(zhong)間膠(jiao)(jiao)，因(yin)而同一工(gong)(gong)作中(zhong)(zhong)(zhong)(zhong)層的(de)雙層不(bu)銹鋼(gang)(gang)絲中(zhong)(zhong)(zhong)(zhong)間沒有(you)交接點。因(yin)此(ci) 不(bu)容易在承(cheng)擔(dan)氣(qi)體壓(ya)力時(shi)(shi)同于不(bu)銹鋼(gang)(gang)絲間的(de)交叉式彎折(zhe)而產生應力或磨(mo)擦(ca)磨(mo)壞。故(gu)使用(yong)性能好(hao)，能承(cheng)擔(dan)髙(gao)壓(ya)。

３）高(gao)壓(ya)膠(jiao)管的(de)外膠(jiao)層粘在提高(gao)層上起維(wei)護功(gong)效(xiao)，一(yi)般選(xuan)用氯丁膠(jiao)。應留意避免 其脆化開裂而危(wei)害(hai)全部橡膠(jiao)軟管的(de)使用壽命(ming)。