高壓膠管接頭總(zong)成(cheng)構(gou)造和性(xing)能的關聯

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)、提高(gao)層(ceng)(ceng)(ceng)和外膠(jiao)(jiao)層(ceng)(ceng)(ceng)構成（如圖例），內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)立即與液壓(ya)油(you)觸碰(peng)，故規定在(zai)(zai)長期性(xing)(xing)(xing)(xing)運行狀態(tai)下不(bu)可受液體浸蝕，能(neng)(neng)(neng)補漏(lou)。在(zai)(zai)提高(gao)層(ceng)(ceng)(ceng)功效下會(hui)(hui)承擔(dan)一(yi)定工作壓(ya)力。因而，宜選(xuan)用丁(ding)腈橡膠(jiao)(jiao)，除(chu)塑(su)膠(jiao)(jiao)粒外，危(wei)害性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)的(de)關(guan)鍵要素也有內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)的(de)強度(du)、薄(bo)(bo)厚(hou)和永(yong)(yong)久(jiu)(jiu)(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)變量。強度(du)和永(yong)(yong)久(jiu)(jiu)(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)變量對密(mi)封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)危(wei)害非常大。一(yi)般強度(du)高(gao)、縮小后的(de)永(yong)(yong)久(jiu)(jiu)(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)變量小，密(mi)封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)則(ze)越好(hao)。一(yi)般是(shi)在(zai)(zai)７０～８５邵氏硬度(du)，縮小永(yong)(yong)久(jiu)(jiu)(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)變５０％時。內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)薄(bo)(bo)厚(hou)建議(yi)是(shi)為１．５～２．５ｍｍ，太(tai)厚(hou)會(hui)(hui)在(zai)(zai)壓(ya)扣(kou)時提升其流(liu)(liu)動率，導致(zhi)(zhi)不(bu)必要的(de)膠(jiao)(jiao)在(zai)(zai)接(jie)頭芯套與橡膠(jiao)(jiao)軟(ruan)管(guan)的(de)觸碰(peng)內(nei)孔內(nei)沉積，減少商品流(liu)(liu)通(tong)橫截面(mian)(mian)(mian)；過薄(bo)(bo)會(hui)(hui)在(zai)(zai)壓(ya)扣(kou)時被壓(ya)裂。另外內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)壁厚(hou)勻稱性(xing)(xing)(xing)(xing)也很重要。假(jia)如薄(bo)(bo)厚(hou)不(bu)勻，縮小后會(hui)(hui)導致(zhi)(zhi)一(yi)面(mian)(mian)(mian)裂斷、一(yi)面(mian)(mian)(mian)堆膠(jiao)(jiao)。內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)出現(xian)的(de)浮(fu)銹也是(shi)危(wei)害性(xing)(xing)(xing)(xing)能(neng)(neng)(neng)品質的(de)關(guan)鍵要素。

２）高壓膠(jiao)管(guan)關(guan)鍵借(jie)助(zhu)提高層(ceng)(ceng)來(lai)承(cheng)受力(li)(li)。手(shou)工(gong)編織橡膠(jiao)軟管(guan)是(shi)靠膠(jiao)漿與內(nei)外黏膠(jiao)粘緊，因(yin)為同(tong)一(yi)手(shou)工(gong)編織層(ceng)(ceng)內(nei)不(bu)(bu)(bu)銹(xiu)鋼(gang)絲(si)中間(jian)(jian)的(de)互相(xiang)觸碰，在(zai)(zai)承(cheng)擔氣體壓力(li)(li)的(de)時候(hou)會因(yin)分(fen)別(bie)伸縮式(shi)不(bu)(bu)(bu)一(yi)而(er)導(dao)致不(bu)(bu)(bu)銹(xiu)鋼(gang)絲(si)彼此之間(jian)(jian)的(de)摩擦而(er)危(wei)害其(qi)使用性(xing)能(neng)。而(er)螺(luo)旋波紋管(guan)是(shi)由盤繞方位不(bu)(bu)(bu)一(yi)樣的(de)雙(shuang)層(ceng)(ceng)產生一(yi)個(ge)工(gong)作中層(ceng)(ceng)，在(zai)(zai)雙(shuang)層(ceng)(ceng)中間(jian)(jian)有(you)正中間(jian)(jian)膠(jiao)，因(yin)而(er)同(tong)一(yi)工(gong)作中層(ceng)(ceng)的(de)雙(shuang)層(ceng)(ceng)不(bu)(bu)(bu)銹(xiu)鋼(gang)絲(si)中間(jian)(jian)沒有(you)交接點(dian)。因(yin)此 不(bu)(bu)(bu)容易在(zai)(zai)承(cheng)擔氣體壓力(li)(li)時同(tong)于不(bu)(bu)(bu)銹(xiu)鋼(gang)絲(si)間(jian)(jian)的(de)交叉式(shi)彎折而(er)產生應(ying)力(li)(li)或(huo)磨(mo)擦磨(mo)壞。故使用性(xing)能(neng)好，能(neng)承(cheng)擔髙壓。

３）高壓(ya)膠(jiao)管的外膠(jiao)層粘(zhan)在提高層上起維護功效(xiao)，一般選用氯丁膠(jiao)。應(ying)留意避免 其脆化開(kai)裂而(er)危害全部橡(xiang)膠(jiao)軟管的使用壽命。