高壓膠管接頭總(zong)成構(gou)造和性(xing)能(neng)的關聯

１、橡膠軟管總成

1）高(gao)壓(ya)膠(jiao)(jiao)管(guan)由內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)、提(ti)高(gao)層(ceng)(ceng)(ceng)和外膠(jiao)(jiao)層(ceng)(ceng)(ceng)構成（如圖(tu)例(li)），內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)立即與液壓(ya)油觸碰(peng)(peng)，故規定(ding)在(zai)(zai)長期性(xing)(xing)(xing)運(yun)行狀(zhuang)態下不(bu)可受液體浸蝕，能補漏。在(zai)(zai)提(ti)高(gao)層(ceng)(ceng)(ceng)功效(xiao)下會承擔一定(ding)工作壓(ya)力。因(yin)而，宜選用丁腈橡膠(jiao)(jiao)，除塑膠(jiao)(jiao)粒外，危(wei)(wei)害性(xing)(xing)(xing)能的(de)(de)關(guan)鍵要素也有內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)的(de)(de)強度、薄厚和永(yong)久(jiu)性(xing)(xing)(xing)形(xing)變量(liang)。強度和永(yong)久(jiu)性(xing)(xing)(xing)形(xing)變量(liang)對密(mi)封(feng)(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能危(wei)(wei)害非常大。一般(ban)強度高(gao)、縮小后的(de)(de)永(yong)久(jiu)性(xing)(xing)(xing)形(xing)變量(liang)小，密(mi)封(feng)(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能則(ze)越好。一般(ban)是(shi)在(zai)(zai)７０～８５邵氏硬度，縮小永(yong)久(jiu)性(xing)(xing)(xing)形(xing)變５０％時(shi)。內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)薄厚建議(yi)是(shi)為１．５～２．５ｍｍ，太(tai)厚會在(zai)(zai)壓(ya)扣時(shi)提(ti)升其流(liu)(liu)動率，導(dao)致(zhi)(zhi)不(bu)必要的(de)(de)膠(jiao)(jiao)在(zai)(zai)接(jie)頭(tou)芯套與橡膠(jiao)(jiao)軟管(guan)的(de)(de)觸碰(peng)(peng)內(nei)孔(kong)內(nei)沉積，減少商品流(liu)(liu)通橫截(jie)面；過薄會在(zai)(zai)壓(ya)扣時(shi)被(bei)壓(ya)裂。另外內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)壁厚勻稱性(xing)(xing)(xing)也很重要。假如薄厚不(bu)勻，縮小后會導(dao)致(zhi)(zhi)一面裂斷(duan)、一面堆膠(jiao)(jiao)。內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)出現的(de)(de)浮銹也是(shi)危(wei)(wei)害性(xing)(xing)(xing)能品質的(de)(de)關(guan)鍵要素。

２）高(gao)(gao)壓(ya)膠管關鍵借(jie)助提高(gao)(gao)層(ceng)(ceng)(ceng)來(lai)承(cheng)受力。手(shou)工(gong)編(bian)織橡膠軟(ruan)管是靠(kao)膠漿與(yu)內外黏膠粘緊，因為同(tong)一(yi)(yi)手(shou)工(gong)編(bian)織層(ceng)(ceng)(ceng)內不銹(xiu)鋼絲(si)中(zhong)(zhong)(zhong)間(jian)(jian)的互相觸(chu)碰，在承(cheng)擔(dan)氣體壓(ya)力的時候會因分別(bie)伸縮式不一(yi)(yi)而導致不銹(xiu)鋼絲(si)彼(bi)此(ci)之間(jian)(jian)的摩擦而危害其使用(yong)性(xing)能(neng)。而螺(luo)旋(xuan)波紋管是由盤繞方位不一(yi)(yi)樣的雙(shuang)層(ceng)(ceng)(ceng)產生一(yi)(yi)個工(gong)作中(zhong)(zhong)(zhong)層(ceng)(ceng)(ceng)，在雙(shuang)層(ceng)(ceng)(ceng)中(zhong)(zhong)(zhong)間(jian)(jian)有正中(zhong)(zhong)(zhong)間(jian)(jian)膠，因而同(tong)一(yi)(yi)工(gong)作中(zhong)(zhong)(zhong)層(ceng)(ceng)(ceng)的雙(shuang)層(ceng)(ceng)(ceng)不銹(xiu)鋼絲(si)中(zhong)(zhong)(zhong)間(jian)(jian)沒(mei)有交(jiao)接點(dian)。因此(ci) 不容易在承(cheng)擔(dan)氣體壓(ya)力時同(tong)于不銹(xiu)鋼絲(si)間(jian)(jian)的交(jiao)叉(cha)式彎折(zhe)而產生應(ying)力或磨(mo)擦磨(mo)壞(huai)。故使用(yong)性(xing)能(neng)好，能(neng)承(cheng)擔(dan)髙壓(ya)。

３）高壓膠(jiao)管的外膠(jiao)層粘在提高層上起維護(hu)功(gong)效，一(yi)般選用(yong)氯丁膠(jiao)。應(ying)留意避(bi)免 其脆化(hua)開(kai)裂而(er)危害全部橡膠(jiao)軟管的使用(yong)壽命。