高壓膠管接頭總成構造和(he)性(xing)能的關聯(lian)

１、橡膠軟管總成

1）高壓(ya)(ya)膠(jiao)(jiao)管由內膠(jiao)(jiao)層(ceng)(ceng)(ceng)、提(ti)高層(ceng)(ceng)(ceng)和(he)外(wai)(wai)膠(jiao)(jiao)層(ceng)(ceng)(ceng)構成（如圖(tu)例），內膠(jiao)(jiao)層(ceng)(ceng)(ceng)立(li)即與液壓(ya)(ya)油(you)觸(chu)碰，故規定在長期性(xing)(xing)(xing)(xing)運行狀態下不(bu)可受液體(ti)浸(jin)蝕，能(neng)(neng)補漏。在提(ti)高層(ceng)(ceng)(ceng)功(gong)效下會(hui)承(cheng)擔一定工(gong)作壓(ya)(ya)力。因而，宜選用丁腈橡膠(jiao)(jiao)，除塑膠(jiao)(jiao)粒外(wai)(wai)，危害性(xing)(xing)(xing)(xing)能(neng)(neng)的(de)(de)關(guan)鍵要素也有內膠(jiao)(jiao)層(ceng)(ceng)(ceng)的(de)(de)強度(du)(du)、薄(bo)厚和(he)永久性(xing)(xing)(xing)(xing)形(xing)變量。強度(du)(du)和(he)永久性(xing)(xing)(xing)(xing)形(xing)變量對密封(feng)性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)(neng)危害非常大。一般(ban)強度(du)(du)高、縮(suo)小(xiao)(xiao)后的(de)(de)永久性(xing)(xing)(xing)(xing)形(xing)變量小(xiao)(xiao)，密封(feng)性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)(neng)則(ze)越好。一般(ban)是(shi)(shi)(shi)在７０～８５邵氏硬度(du)(du)，縮(suo)小(xiao)(xiao)永久性(xing)(xing)(xing)(xing)形(xing)變５０％時。內膠(jiao)(jiao)層(ceng)(ceng)(ceng)薄(bo)厚建議是(shi)(shi)(shi)為１．５～２．５ｍｍ，太(tai)厚會(hui)在壓(ya)(ya)扣時提(ti)升其流(liu)動率，導(dao)致(zhi)不(bu)必要的(de)(de)膠(jiao)(jiao)在接頭(tou)芯套與橡膠(jiao)(jiao)軟管的(de)(de)觸(chu)碰內孔內沉積，減(jian)少商品流(liu)通橫截面；過薄(bo)會(hui)在壓(ya)(ya)扣時被壓(ya)(ya)裂。另外(wai)(wai)內膠(jiao)(jiao)層(ceng)(ceng)(ceng)壁厚勻稱性(xing)(xing)(xing)(xing)也很(hen)重要。假如薄(bo)厚不(bu)勻，縮(suo)小(xiao)(xiao)后會(hui)導(dao)致(zhi)一面裂斷、一面堆膠(jiao)(jiao)。內膠(jiao)(jiao)層(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)出(chu)現的(de)(de)浮銹也是(shi)(shi)(shi)危害性(xing)(xing)(xing)(xing)能(neng)(neng)品質(zhi)的(de)(de)關(guan)鍵要素。

２）高壓膠(jiao)管(guan)關鍵借助提高層(ceng)來承受(shou)力(li)。手工編織(zhi)橡膠(jiao)軟管(guan)是靠膠(jiao)漿與內(nei)外黏膠(jiao)粘緊(jin)，因(yin)(yin)為(wei)同(tong)一(yi)手工編織(zhi)層(ceng)內(nei)不(bu)(bu)銹鋼(gang)絲中(zhong)間(jian)(jian)的(de)互相(xiang)觸碰，在(zai)承擔氣體(ti)壓力(li)的(de)時候會因(yin)(yin)分別伸(shen)縮(suo)式(shi)不(bu)(bu)一(yi)而導致不(bu)(bu)銹鋼(gang)絲彼此之間(jian)(jian)的(de)摩(mo)擦(ca)而危(wei)害其使用(yong)性能(neng)。而螺旋波紋管(guan)是由(you)盤繞方位不(bu)(bu)一(yi)樣的(de)雙層(ceng)產(chan)生一(yi)個工作中(zhong)層(ceng)，在(zai)雙層(ceng)中(zhong)間(jian)(jian)有(you)正中(zhong)間(jian)(jian)膠(jiao)，因(yin)(yin)而同(tong)一(yi)工作中(zhong)層(ceng)的(de)雙層(ceng)不(bu)(bu)銹鋼(gang)絲中(zhong)間(jian)(jian)沒有(you)交接(jie)點。因(yin)(yin)此 不(bu)(bu)容(rong)易在(zai)承擔氣體(ti)壓力(li)時同(tong)于不(bu)(bu)銹鋼(gang)絲間(jian)(jian)的(de)交叉式(shi)彎折而產(chan)生應力(li)或磨擦(ca)磨壞。故使用(yong)性能(neng)好，能(neng)承擔髙壓。

３）高(gao)壓膠管的(de)(de)外膠層粘在提高(gao)層上(shang)起維護功效(xiao)，一般(ban)選用氯(lv)丁膠。應留意避免(mian) 其脆化(hua)開裂而(er)危害全部橡膠軟管的(de)(de)使用壽命。