高壓膠管接頭總(zong)成(cheng)構造和性能(neng)的關聯

１、橡膠軟管總成

1）高(gao)壓(ya)(ya)膠(jiao)(jiao)(jiao)(jiao)管由內膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)、提(ti)高(gao)層(ceng)(ceng)和外(wai)(wai)膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)構成(cheng)（如圖例），內膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)立即與液壓(ya)(ya)油(you)觸(chu)碰，故(gu)規定在(zai)長期性(xing)(xing)(xing)(xing)運行狀態下不(bu)可受液體浸蝕，能補漏(lou)。在(zai)提(ti)高(gao)層(ceng)(ceng)功效(xiao)下會承擔(dan)一(yi)定工作壓(ya)(ya)力。因而，宜選用丁腈橡(xiang)膠(jiao)(jiao)(jiao)(jiao)，除塑膠(jiao)(jiao)(jiao)(jiao)粒(li)外(wai)(wai)，危(wei)害性(xing)(xing)(xing)(xing)能的(de)關鍵(jian)要素也(ye)有內膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)的(de)強(qiang)度(du)(du)(du)、薄厚(hou)(hou)和永久性(xing)(xing)(xing)(xing)形(xing)變量(liang)。強(qiang)度(du)(du)(du)和永久性(xing)(xing)(xing)(xing)形(xing)變量(liang)對密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能危(wei)害非常大。一(yi)般(ban)(ban)強(qiang)度(du)(du)(du)高(gao)、縮小后的(de)永久性(xing)(xing)(xing)(xing)形(xing)變量(liang)小，密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能則(ze)越好。一(yi)般(ban)(ban)是(shi)在(zai)７０～８５邵氏硬度(du)(du)(du)，縮小永久性(xing)(xing)(xing)(xing)形(xing)變５０％時。內膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)薄厚(hou)(hou)建議是(shi)為(wei)１．５～２．５ｍｍ，太厚(hou)(hou)會在(zai)壓(ya)(ya)扣(kou)時提(ti)升(sheng)其流動率(lv)，導致不(bu)必要的(de)膠(jiao)(jiao)(jiao)(jiao)在(zai)接頭(tou)芯套與橡(xiang)膠(jiao)(jiao)(jiao)(jiao)軟管的(de)觸(chu)碰內孔內沉(chen)積，減少商品(pin)流通橫截面；過薄會在(zai)壓(ya)(ya)扣(kou)時被壓(ya)(ya)裂。另外(wai)(wai)內膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)壁厚(hou)(hou)勻稱(cheng)性(xing)(xing)(xing)(xing)也(ye)很重(zhong)要。假如薄厚(hou)(hou)不(bu)勻，縮小后會導致一(yi)面裂斷、一(yi)面堆膠(jiao)(jiao)(jiao)(jiao)。內膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)表(biao)層(ceng)(ceng)出(chu)現的(de)浮銹也(ye)是(shi)危(wei)害性(xing)(xing)(xing)(xing)能品(pin)質的(de)關鍵(jian)要素。

２）高壓(ya)膠(jiao)(jiao)(jiao)管關(guan)鍵(jian)借助提高層(ceng)來(lai)承(cheng)受力(li)。手工編織橡膠(jiao)(jiao)(jiao)軟管是(shi)靠膠(jiao)(jiao)(jiao)漿(jiang)與內外黏(nian)膠(jiao)(jiao)(jiao)粘緊，因(yin)(yin)為同一(yi)(yi)手工編織層(ceng)內不(bu)(bu)銹鋼(gang)(gang)絲(si)中(zhong)(zhong)(zhong)間(jian)的(de)(de)(de)互相觸碰，在承(cheng)擔(dan)氣(qi)體壓(ya)力(li)的(de)(de)(de)時(shi)候會因(yin)(yin)分別伸縮(suo)式不(bu)(bu)一(yi)(yi)而(er)(er)(er)導致不(bu)(bu)銹鋼(gang)(gang)絲(si)彼此之間(jian)的(de)(de)(de)摩擦而(er)(er)(er)危害其使用(yong)性(xing)能。而(er)(er)(er)螺旋波紋(wen)管是(shi)由盤繞方位不(bu)(bu)一(yi)(yi)樣的(de)(de)(de)雙層(ceng)產生一(yi)(yi)個工作中(zhong)(zhong)(zhong)層(ceng)，在雙層(ceng)中(zhong)(zhong)(zhong)間(jian)有正中(zhong)(zhong)(zhong)間(jian)膠(jiao)(jiao)(jiao)，因(yin)(yin)而(er)(er)(er)同一(yi)(yi)工作中(zhong)(zhong)(zhong)層(ceng)的(de)(de)(de)雙層(ceng)不(bu)(bu)銹鋼(gang)(gang)絲(si)中(zhong)(zhong)(zhong)間(jian)沒有交接點(dian)。因(yin)(yin)此 不(bu)(bu)容易(yi)在承(cheng)擔(dan)氣(qi)體壓(ya)力(li)時(shi)同于不(bu)(bu)銹鋼(gang)(gang)絲(si)間(jian)的(de)(de)(de)交叉式彎折而(er)(er)(er)產生應力(li)或磨(mo)擦磨(mo)壞。故使用(yong)性(xing)能好，能承(cheng)擔(dan)髙壓(ya)。

３）高(gao)壓膠管的外膠層粘在提(ti)高(gao)層上起維護功效，一(yi)般(ban)選用氯(lv)丁膠。應留意避(bi)免 其脆化開裂而危(wei)害全(quan)部橡(xiang)膠軟管的使用壽命。