高壓膠管接頭總(zong)成構(gou)造和性能的關聯(lian)

１、橡膠軟管總成

1）高壓膠(jiao)(jiao)管由(you)內(nei)膠(jiao)(jiao)層(ceng)(ceng)、提高層(ceng)(ceng)和(he)外(wai)膠(jiao)(jiao)層(ceng)(ceng)構成(cheng)（如圖例），內(nei)膠(jiao)(jiao)層(ceng)(ceng)立(li)即與(yu)液(ye)壓油觸碰，故規定在(zai)長(chang)期(qi)性(xing)(xing)(xing)運行(xing)狀態(tai)下不(bu)可受液(ye)體(ti)浸蝕，能(neng)補漏。在(zai)提高層(ceng)(ceng)功(gong)效下會(hui)承擔一(yi)定工(gong)作壓力(li)。因(yin)而，宜選用丁腈橡膠(jiao)(jiao)，除塑膠(jiao)(jiao)粒(li)外(wai)，危(wei)害性(xing)(xing)(xing)能(neng)的(de)(de)關鍵(jian)要素也有內(nei)膠(jiao)(jiao)層(ceng)(ceng)的(de)(de)強(qiang)(qiang)度、薄(bo)厚(hou)和(he)永久(jiu)性(xing)(xing)(xing)形(xing)變(bian)量(liang)(liang)。強(qiang)(qiang)度和(he)永久(jiu)性(xing)(xing)(xing)形(xing)變(bian)量(liang)(liang)對密封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)危(wei)害非常(chang)大。一(yi)般強(qiang)(qiang)度高、縮(suo)小(xiao)(xiao)后的(de)(de)永久(jiu)性(xing)(xing)(xing)形(xing)變(bian)量(liang)(liang)小(xiao)(xiao)，密封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)則越好。一(yi)般是(shi)在(zai)７０～８５邵氏硬度，縮(suo)小(xiao)(xiao)永久(jiu)性(xing)(xing)(xing)形(xing)變(bian)５０％時(shi)(shi)。內(nei)膠(jiao)(jiao)層(ceng)(ceng)薄(bo)厚(hou)建議是(shi)為１．５～２．５ｍｍ，太厚(hou)會(hui)在(zai)壓扣時(shi)(shi)提升其(qi)流(liu)動(dong)率，導致(zhi)不(bu)必要的(de)(de)膠(jiao)(jiao)在(zai)接頭(tou)芯套與(yu)橡膠(jiao)(jiao)軟管的(de)(de)觸碰內(nei)孔內(nei)沉積(ji)，減少商品流(liu)通橫截(jie)面；過薄(bo)會(hui)在(zai)壓扣時(shi)(shi)被壓裂。另外(wai)內(nei)膠(jiao)(jiao)層(ceng)(ceng)壁厚(hou)勻稱性(xing)(xing)(xing)也很重要。假如薄(bo)厚(hou)不(bu)勻，縮(suo)小(xiao)(xiao)后會(hui)導致(zhi)一(yi)面裂斷、一(yi)面堆膠(jiao)(jiao)。內(nei)膠(jiao)(jiao)層(ceng)(ceng)表層(ceng)(ceng)出現的(de)(de)浮銹也是(shi)危(wei)害性(xing)(xing)(xing)能(neng)品質的(de)(de)關鍵(jian)要素。

２）高(gao)壓(ya)(ya)膠(jiao)管(guan)關鍵借助提高(gao)層(ceng)(ceng)來(lai)承受力(li)(li)。手工編(bian)織(zhi)橡膠(jiao)軟管(guan)是靠膠(jiao)漿與內外黏膠(jiao)粘緊，因為(wei)同(tong)一(yi)手工編(bian)織(zhi)層(ceng)(ceng)內不(bu)銹鋼(gang)絲中(zhong)(zhong)間的互(hu)相觸碰，在承擔(dan)氣體壓(ya)(ya)力(li)(li)的時候會因分別伸縮式(shi)不(bu)一(yi)而導致不(bu)銹鋼(gang)絲彼(bi)此(ci)之(zhi)間的摩擦(ca)而危害其(qi)使(shi)用(yong)性能。而螺旋波紋管(guan)是由(you)盤繞方位不(bu)一(yi)樣的雙(shuang)層(ceng)(ceng)產生一(yi)個(ge)工作中(zhong)(zhong)層(ceng)(ceng)，在雙(shuang)層(ceng)(ceng)中(zhong)(zhong)間有正中(zhong)(zhong)間膠(jiao)，因而同(tong)一(yi)工作中(zhong)(zhong)層(ceng)(ceng)的雙(shuang)層(ceng)(ceng)不(bu)銹鋼(gang)絲中(zhong)(zhong)間沒有交(jiao)接點。因此(ci) 不(bu)容易在承擔(dan)氣體壓(ya)(ya)力(li)(li)時同(tong)于不(bu)銹鋼(gang)絲間的交(jiao)叉式(shi)彎折而產生應(ying)力(li)(li)或磨擦(ca)磨壞。故使(shi)用(yong)性能好，能承擔(dan)髙壓(ya)(ya)。

３）高壓(ya)膠管(guan)的外膠層(ceng)(ceng)粘在提高層(ceng)(ceng)上起(qi)維護功效，一般選用氯丁膠。應留意(yi)避免(mian) 其脆化開裂(lie)而危(wei)害全(quan)部(bu)橡(xiang)膠軟管(guan)的使用壽命。