高壓膠管接頭總成(cheng)構造和性能(neng)的關(guan)聯

１、橡膠軟管總成

1）高壓膠(jiao)(jiao)(jiao)(jiao)(jiao)管(guan)由內(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)、提高層(ceng)(ceng)和外(wai)(wai)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)構成（如圖例），內(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)立即與(yu)液壓油觸碰(peng)，故規定在(zai)(zai)長期(qi)性(xing)(xing)運行狀態下不可受液體(ti)浸蝕，能(neng)補漏。在(zai)(zai)提高層(ceng)(ceng)功效下會(hui)(hui)承擔一定工作壓力。因而，宜選用丁(ding)腈橡膠(jiao)(jiao)(jiao)(jiao)(jiao)，除塑膠(jiao)(jiao)(jiao)(jiao)(jiao)粒外(wai)(wai)，危(wei)害(hai)性(xing)(xing)能(neng)的(de)(de)(de)關鍵(jian)要素也(ye)有內(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)的(de)(de)(de)強(qiang)度(du)(du)、薄(bo)厚(hou)和永(yong)(yong)久(jiu)性(xing)(xing)形變量。強(qiang)度(du)(du)和永(yong)(yong)久(jiu)性(xing)(xing)形變量對(dui)密(mi)(mi)封性(xing)(xing)性(xing)(xing)能(neng)危(wei)害(hai)非(fei)常大。一般(ban)強(qiang)度(du)(du)高、縮小后(hou)的(de)(de)(de)永(yong)(yong)久(jiu)性(xing)(xing)形變量小，密(mi)(mi)封性(xing)(xing)性(xing)(xing)能(neng)則越好。一般(ban)是(shi)在(zai)(zai)７０～８５邵氏硬度(du)(du)，縮小永(yong)(yong)久(jiu)性(xing)(xing)形變５０％時。內(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)薄(bo)厚(hou)建議是(shi)為１．５～２．５ｍｍ，太厚(hou)會(hui)(hui)在(zai)(zai)壓扣(kou)時提升其(qi)流動(dong)率，導致不必要的(de)(de)(de)膠(jiao)(jiao)(jiao)(jiao)(jiao)在(zai)(zai)接頭芯套與(yu)橡膠(jiao)(jiao)(jiao)(jiao)(jiao)軟管(guan)的(de)(de)(de)觸碰(peng)內(nei)孔內(nei)沉積，減少(shao)商品流通橫(heng)截(jie)面(mian)；過薄(bo)會(hui)(hui)在(zai)(zai)壓扣(kou)時被壓裂。另外(wai)(wai)內(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)壁厚(hou)勻稱性(xing)(xing)也(ye)很重要。假如薄(bo)厚(hou)不勻，縮小后(hou)會(hui)(hui)導致一面(mian)裂斷、一面(mian)堆膠(jiao)(jiao)(jiao)(jiao)(jiao)。內(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)表層(ceng)(ceng)出現的(de)(de)(de)浮銹也(ye)是(shi)危(wei)害(hai)性(xing)(xing)能(neng)品質的(de)(de)(de)關鍵(jian)要素。

２）高(gao)壓(ya)膠(jiao)(jiao)管關鍵借助提(ti)高(gao)層(ceng)來承(cheng)受力。手(shou)(shou)工編織橡膠(jiao)(jiao)軟管是靠膠(jiao)(jiao)漿(jiang)與(yu)內外(wai)黏膠(jiao)(jiao)粘緊，因為同(tong)一(yi)手(shou)(shou)工編織層(ceng)內不(bu)銹(xiu)(xiu)(xiu)鋼絲中(zhong)間(jian)(jian)的(de)(de)(de)互相觸碰，在(zai)承(cheng)擔氣體壓(ya)力的(de)(de)(de)時(shi)候會因分別伸縮(suo)式不(bu)一(yi)而導致不(bu)銹(xiu)(xiu)(xiu)鋼絲彼此(ci)之間(jian)(jian)的(de)(de)(de)摩擦(ca)而危害其使用(yong)性能(neng)(neng)。而螺旋波紋(wen)管是由盤繞方位不(bu)一(yi)樣(yang)的(de)(de)(de)雙(shuang)(shuang)層(ceng)產(chan)生一(yi)個工作中(zhong)層(ceng)，在(zai)雙(shuang)(shuang)層(ceng)中(zhong)間(jian)(jian)有(you)正中(zhong)間(jian)(jian)膠(jiao)(jiao)，因而同(tong)一(yi)工作中(zhong)層(ceng)的(de)(de)(de)雙(shuang)(shuang)層(ceng)不(bu)銹(xiu)(xiu)(xiu)鋼絲中(zhong)間(jian)(jian)沒有(you)交接點。因此(ci) 不(bu)容(rong)易在(zai)承(cheng)擔氣體壓(ya)力時(shi)同(tong)于不(bu)銹(xiu)(xiu)(xiu)鋼絲間(jian)(jian)的(de)(de)(de)交叉式彎折而產(chan)生應力或(huo)磨(mo)擦(ca)磨(mo)壞。故使用(yong)性能(neng)(neng)好，能(neng)(neng)承(cheng)擔髙壓(ya)。

３）高壓膠(jiao)管的外(wai)膠(jiao)層粘(zhan)在提(ti)高層上起(qi)維護(hu)功(gong)效，一般選用氯丁膠(jiao)。應留意(yi)避免 其脆化開裂而危(wei)害全部橡膠(jiao)軟管的使(shi)用壽命(ming)。