高壓膠管接頭總成構造和性(xing)能的(de)關聯(lian)

１、橡膠軟管總成

1）高(gao)(gao)壓(ya)膠(jiao)(jiao)(jiao)管由(you)內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)、提高(gao)(gao)層(ceng)(ceng)(ceng)(ceng)(ceng)和(he)外膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)構成（如(ru)圖例），內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)立(li)即與(yu)液壓(ya)油觸(chu)碰，故規定在(zai)長期性(xing)(xing)(xing)運行狀態下不可受液體浸(jin)蝕(shi)，能(neng)補(bu)漏。在(zai)提高(gao)(gao)層(ceng)(ceng)(ceng)(ceng)(ceng)功效下會(hui)承擔一(yi)(yi)定工作壓(ya)力。因而，宜(yi)選(xuan)用丁腈橡膠(jiao)(jiao)(jiao)，除塑(su)膠(jiao)(jiao)(jiao)粒外，危害性(xing)(xing)(xing)能(neng)的(de)(de)關(guan)鍵要(yao)素也(ye)(ye)有內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)強度、薄(bo)厚(hou)(hou)和(he)永(yong)久(jiu)(jiu)性(xing)(xing)(xing)形(xing)變(bian)量。強度和(he)永(yong)久(jiu)(jiu)性(xing)(xing)(xing)形(xing)變(bian)量對(dui)密(mi)封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)危害非常大。一(yi)(yi)般(ban)強度高(gao)(gao)、縮小(xiao)后(hou)的(de)(de)永(yong)久(jiu)(jiu)性(xing)(xing)(xing)形(xing)變(bian)量小(xiao)，密(mi)封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)則越好(hao)。一(yi)(yi)般(ban)是(shi)在(zai)７０～８５邵氏硬度，縮小(xiao)永(yong)久(jiu)(jiu)性(xing)(xing)(xing)形(xing)變(bian)５０％時(shi)(shi)(shi)。內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)薄(bo)厚(hou)(hou)建議(yi)是(shi)為１．５～２．５ｍｍ，太厚(hou)(hou)會(hui)在(zai)壓(ya)扣時(shi)(shi)(shi)提升其流動率，導致不必(bi)要(yao)的(de)(de)膠(jiao)(jiao)(jiao)在(zai)接頭(tou)芯套與(yu)橡膠(jiao)(jiao)(jiao)軟管的(de)(de)觸(chu)碰內孔內沉積，減(jian)少(shao)商品(pin)流通橫(heng)截面；過薄(bo)會(hui)在(zai)壓(ya)扣時(shi)(shi)(shi)被壓(ya)裂。另外內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)壁厚(hou)(hou)勻稱性(xing)(xing)(xing)也(ye)(ye)很重要(yao)。假如(ru)薄(bo)厚(hou)(hou)不勻，縮小(xiao)后(hou)會(hui)導致一(yi)(yi)面裂斷(duan)、一(yi)(yi)面堆膠(jiao)(jiao)(jiao)。內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)表(biao)層(ceng)(ceng)(ceng)(ceng)(ceng)出現(xian)的(de)(de)浮銹也(ye)(ye)是(shi)危害性(xing)(xing)(xing)能(neng)品(pin)質的(de)(de)關(guan)鍵要(yao)素。

２）高(gao)壓(ya)膠管關(guan)鍵借助提高(gao)層來(lai)承受力(li)(li)。手(shou)工(gong)編織橡膠軟管是靠膠漿(jiang)與(yu)內外黏膠粘緊，因(yin)為同(tong)一(yi)手(shou)工(gong)編織層內不(bu)(bu)銹(xiu)(xiu)(xiu)鋼(gang)絲(si)中(zhong)(zhong)(zhong)間(jian)(jian)的(de)互相觸碰，在承擔(dan)氣體(ti)壓(ya)力(li)(li)的(de)時候會因(yin)分別伸縮(suo)式不(bu)(bu)一(yi)而導致不(bu)(bu)銹(xiu)(xiu)(xiu)鋼(gang)絲(si)彼此之間(jian)(jian)的(de)摩擦(ca)而危(wei)害其使用(yong)性能(neng)(neng)。而螺(luo)旋(xuan)波(bo)紋管是由(you)盤(pan)繞方位不(bu)(bu)一(yi)樣的(de)雙層產(chan)生一(yi)個工(gong)作(zuo)(zuo)中(zhong)(zhong)(zhong)層，在雙層中(zhong)(zhong)(zhong)間(jian)(jian)有正(zheng)中(zhong)(zhong)(zhong)間(jian)(jian)膠，因(yin)而同(tong)一(yi)工(gong)作(zuo)(zuo)中(zhong)(zhong)(zhong)層的(de)雙層不(bu)(bu)銹(xiu)(xiu)(xiu)鋼(gang)絲(si)中(zhong)(zhong)(zhong)間(jian)(jian)沒有交(jiao)接點。因(yin)此 不(bu)(bu)容易(yi)在承擔(dan)氣體(ti)壓(ya)力(li)(li)時同(tong)于不(bu)(bu)銹(xiu)(xiu)(xiu)鋼(gang)絲(si)間(jian)(jian)的(de)交(jiao)叉(cha)式彎折而產(chan)生應力(li)(li)或磨擦(ca)磨壞。故(gu)使用(yong)性能(neng)(neng)好，能(neng)(neng)承擔(dan)髙壓(ya)。

３）高壓膠(jiao)(jiao)管(guan)(guan)的外膠(jiao)(jiao)層(ceng)(ceng)粘在提高層(ceng)(ceng)上起維護功(gong)效，一般(ban)選用氯(lv)丁膠(jiao)(jiao)。應留(liu)意(yi)避免(mian) 其脆化開裂而危(wei)害全部橡(xiang)膠(jiao)(jiao)軟管(guan)(guan)的使用壽命(ming)。