高壓膠管接頭總成(cheng)構(gou)造和性能的關(guan)聯

１、橡膠軟管總成

1）高壓(ya)(ya)(ya)膠(jiao)(jiao)(jiao)管由內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)、提(ti)高層(ceng)(ceng)(ceng)和(he)外膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)構成（如圖例(li)），內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)立即(ji)與(yu)液壓(ya)(ya)(ya)油觸碰，故規定(ding)在長期性(xing)(xing)(xing)(xing)運(yun)行狀態下不(bu)可受(shou)液體浸蝕，能(neng)補漏。在提(ti)高層(ceng)(ceng)(ceng)功效下會(hui)(hui)承擔一(yi)(yi)定(ding)工作壓(ya)(ya)(ya)力。因而，宜選用丁腈(jing)橡膠(jiao)(jiao)(jiao)，除(chu)塑膠(jiao)(jiao)(jiao)粒(li)外，危(wei)(wei)害(hai)性(xing)(xing)(xing)(xing)能(neng)的(de)(de)關(guan)鍵(jian)要素也有內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)的(de)(de)強(qiang)度、薄(bo)厚(hou)(hou)(hou)(hou)和(he)永(yong)(yong)久性(xing)(xing)(xing)(xing)形變量(liang)(liang)。強(qiang)度和(he)永(yong)(yong)久性(xing)(xing)(xing)(xing)形變量(liang)(liang)對密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)危(wei)(wei)害(hai)非常大。一(yi)(yi)般強(qiang)度高、縮小(xiao)后的(de)(de)永(yong)(yong)久性(xing)(xing)(xing)(xing)形變量(liang)(liang)小(xiao)，密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)則越好(hao)。一(yi)(yi)般是(shi)(shi)在７０～８５邵氏硬度，縮小(xiao)永(yong)(yong)久性(xing)(xing)(xing)(xing)形變５０％時。內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)薄(bo)厚(hou)(hou)(hou)(hou)建議是(shi)(shi)為(wei)１．５～２．５ｍｍ，太厚(hou)(hou)(hou)(hou)會(hui)(hui)在壓(ya)(ya)(ya)扣(kou)時提(ti)升(sheng)其流(liu)(liu)動(dong)率，導致(zhi)不(bu)必要的(de)(de)膠(jiao)(jiao)(jiao)在接頭芯(xin)套與(yu)橡膠(jiao)(jiao)(jiao)軟管的(de)(de)觸碰內孔(kong)內沉積(ji)，減少(shao)商品(pin)流(liu)(liu)通橫截(jie)面；過(guo)薄(bo)會(hui)(hui)在壓(ya)(ya)(ya)扣(kou)時被壓(ya)(ya)(ya)裂(lie)。另外內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)壁厚(hou)(hou)(hou)(hou)勻稱性(xing)(xing)(xing)(xing)也很(hen)重要。假如薄(bo)厚(hou)(hou)(hou)(hou)不(bu)勻，縮小(xiao)后會(hui)(hui)導致(zhi)一(yi)(yi)面裂(lie)斷(duan)、一(yi)(yi)面堆膠(jiao)(jiao)(jiao)。內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)表(biao)層(ceng)(ceng)(ceng)出現的(de)(de)浮銹也是(shi)(shi)危(wei)(wei)害(hai)性(xing)(xing)(xing)(xing)能(neng)品(pin)質的(de)(de)關(guan)鍵(jian)要素。

２）高(gao)壓膠管關鍵借助提高(gao)層(ceng)來承(cheng)受力。手工(gong)(gong)編(bian)織橡膠軟管是(shi)靠膠漿與內外黏膠粘(zhan)緊，因(yin)為同一手工(gong)(gong)編(bian)織層(ceng)內不銹(xiu)鋼絲中(zhong)間(jian)的(de)(de)(de)互相觸碰(peng)，在承(cheng)擔(dan)氣體壓力的(de)(de)(de)時(shi)候會因(yin)分別伸縮式不一而(er)導致不銹(xiu)鋼絲彼此(ci)之(zhi)間(jian)的(de)(de)(de)摩擦而(er)危害其使用(yong)性能。而(er)螺旋波(bo)紋管是(shi)由盤繞方位不一樣的(de)(de)(de)雙(shuang)層(ceng)產生一個工(gong)(gong)作中(zhong)層(ceng)，在雙(shuang)層(ceng)中(zhong)間(jian)有正中(zhong)間(jian)膠，因(yin)而(er)同一工(gong)(gong)作中(zhong)層(ceng)的(de)(de)(de)雙(shuang)層(ceng)不銹(xiu)鋼絲中(zhong)間(jian)沒(mei)有交(jiao)接點。因(yin)此(ci) 不容(rong)易(yi)在承(cheng)擔(dan)氣體壓力時(shi)同于不銹(xiu)鋼絲間(jian)的(de)(de)(de)交(jiao)叉式彎折(zhe)而(er)產生應力或(huo)磨擦磨壞(huai)。故使用(yong)性能好，能承(cheng)擔(dan)髙壓。

３）高壓(ya)膠管的外膠層粘在(zai)提高層上(shang)起維護(hu)功效(xiao)，一(yi)般選(xuan)用氯丁膠。應留意避免(mian) 其脆化開裂而危害全部橡膠軟管的使(shi)用壽命。