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）高壓(ya)(ya)膠(jiao)(jiao)(jiao)(jiao)管(guan)由內(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)、提(ti)高層(ceng)和外(wai)膠(jiao)(jiao)(jiao)(jiao)層(ceng)構成(cheng)（如圖(tu)例(li)），內(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)立即與(yu)液壓(ya)(ya)油觸碰(peng)(peng)，故規定(ding)在(zai)長期性(xing)(xing)運行狀(zhuang)態下(xia)不可受液體浸(jin)蝕，能補漏。在(zai)提(ti)高層(ceng)功(gong)效(xiao)下(xia)會承擔一定(ding)工作壓(ya)(ya)力。因而，宜(yi)選用(yong)丁腈(jing)橡(xiang)膠(jiao)(jiao)(jiao)(jiao)，除塑膠(jiao)(jiao)(jiao)(jiao)粒外(wai)，危(wei)(wei)害(hai)性(xing)(xing)能的(de)(de)關鍵要(yao)素也有內(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)的(de)(de)強(qiang)度、薄(bo)(bo)厚和永(yong)久性(xing)(xing)形(xing)變量。強(qiang)度和永(yong)久性(xing)(xing)形(xing)變量對密封性(xing)(xing)性(xing)(xing)能危(wei)(wei)害(hai)非常大(da)。一般(ban)強(qiang)度高、縮(suo)小(xiao)(xiao)后的(de)(de)永(yong)久性(xing)(xing)形(xing)變量小(xiao)(xiao)，密封性(xing)(xing)性(xing)(xing)能則越好(hao)。一般(ban)是(shi)在(zai)７０～８５邵氏硬度，縮(suo)小(xiao)(xiao)永(yong)久性(xing)(xing)形(xing)變５０％時。內(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)薄(bo)(bo)厚建議是(shi)為(wei)１．５～２．５ｍｍ，太厚會在(zai)壓(ya)(ya)扣時提(ti)升(sheng)其流動率，導致不必要(yao)的(de)(de)膠(jiao)(jiao)(jiao)(jiao)在(zai)接(jie)頭芯套與(yu)橡(xiang)膠(jiao)(jiao)(jiao)(jiao)軟管(guan)的(de)(de)觸碰(peng)(peng)內(nei)孔內(nei)沉積，減少商品流通橫截面(mian)；過薄(bo)(bo)會在(zai)壓(ya)(ya)扣時被壓(ya)(ya)裂(lie)。另外(wai)內(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)壁厚勻(yun)稱性(xing)(xing)也很重要(yao)。假如薄(bo)(bo)厚不勻(yun)，縮(suo)小(xiao)(xiao)后會導致一面(mian)裂(lie)斷、一面(mian)堆膠(jiao)(jiao)(jiao)(jiao)。內(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)表層(ceng)出現的(de)(de)浮銹(xiu)也是(shi)危(wei)(wei)害(hai)性(xing)(xing)能品質的(de)(de)關鍵要(yao)素。

２）高壓(ya)(ya)膠(jiao)管(guan)關(guan)鍵借助提高層(ceng)(ceng)(ceng)來承受力。手工(gong)編(bian)織(zhi)橡膠(jiao)軟(ruan)管(guan)是靠膠(jiao)漿與內外黏(nian)膠(jiao)粘緊，因為同一(yi)手工(gong)編(bian)織(zhi)層(ceng)(ceng)(ceng)內不銹(xiu)(xiu)鋼(gang)(gang)絲中(zhong)(zhong)(zhong)間(jian)(jian)(jian)的互相(xiang)觸碰，在承擔氣(qi)體壓(ya)(ya)力的時候會因分別伸縮式(shi)不一(yi)而(er)(er)導致不銹(xiu)(xiu)鋼(gang)(gang)絲彼(bi)此之(zhi)間(jian)(jian)(jian)的摩擦而(er)(er)危(wei)害其使用(yong)(yong)性能。而(er)(er)螺(luo)旋波(bo)紋(wen)管(guan)是由(you)盤繞方位不一(yi)樣的雙層(ceng)(ceng)(ceng)產(chan)生一(yi)個工(gong)作(zuo)中(zhong)(zhong)(zhong)層(ceng)(ceng)(ceng)，在雙層(ceng)(ceng)(ceng)中(zhong)(zhong)(zhong)間(jian)(jian)(jian)有(you)正中(zhong)(zhong)(zhong)間(jian)(jian)(jian)膠(jiao)，因而(er)(er)同一(yi)工(gong)作(zuo)中(zhong)(zhong)(zhong)層(ceng)(ceng)(ceng)的雙層(ceng)(ceng)(ceng)不銹(xiu)(xiu)鋼(gang)(gang)絲中(zhong)(zhong)(zhong)間(jian)(jian)(jian)沒有(you)交接(jie)點。因此 不容易(yi)在承擔氣(qi)體壓(ya)(ya)力時同于不銹(xiu)(xiu)鋼(gang)(gang)絲間(jian)(jian)(jian)的交叉式(shi)彎折而(er)(er)產(chan)生應力或磨(mo)擦磨(mo)壞。故使用(yong)(yong)性能好(hao)，能承擔髙壓(ya)(ya)。

３）高壓膠管(guan)的外膠層(ceng)粘在提高層(ceng)上(shang)起維(wei)護(hu)功效，一般(ban)選用氯丁膠。應留意避免 其脆化開(kai)裂而(er)危害全部橡(xiang)膠軟管(guan)的使用壽命。