高壓膠管接頭總(zong)成構(gou)造(zao)和性能的關聯(lian)

１、橡膠軟管總成

1）高壓膠(jiao)(jiao)(jiao)(jiao)(jiao)管由內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)、提(ti)高層(ceng)(ceng)(ceng)和外膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)構成（如圖(tu)例(li)），內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)立即與液壓油(you)觸碰，故規定在(zai)(zai)(zai)(zai)長期性(xing)(xing)(xing)運行狀態(tai)下(xia)(xia)不可受液體浸(jin)蝕，能(neng)(neng)補漏。在(zai)(zai)(zai)(zai)提(ti)高層(ceng)(ceng)(ceng)功效下(xia)(xia)會(hui)承擔一(yi)定工作壓力。因而，宜選用丁腈橡(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)，除塑膠(jiao)(jiao)(jiao)(jiao)(jiao)粒(li)外，危害(hai)(hai)性(xing)(xing)(xing)能(neng)(neng)的關(guan)鍵(jian)要素也有內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)的強(qiang)度(du)(du)、薄厚和永(yong)久(jiu)性(xing)(xing)(xing)形(xing)變(bian)(bian)(bian)量(liang)。強(qiang)度(du)(du)和永(yong)久(jiu)性(xing)(xing)(xing)形(xing)變(bian)(bian)(bian)量(liang)對密(mi)封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)(neng)危害(hai)(hai)非常(chang)大。一(yi)般強(qiang)度(du)(du)高、縮(suo)小后(hou)的永(yong)久(jiu)性(xing)(xing)(xing)形(xing)變(bian)(bian)(bian)量(liang)小，密(mi)封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)(neng)則越好。一(yi)般是(shi)在(zai)(zai)(zai)(zai)７０～８５邵氏硬度(du)(du)，縮(suo)小永(yong)久(jiu)性(xing)(xing)(xing)形(xing)變(bian)(bian)(bian)５０％時。內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)薄厚建議是(shi)為１．５～２．５ｍｍ，太厚會(hui)在(zai)(zai)(zai)(zai)壓扣時提(ti)升其流動率，導(dao)致不必要的膠(jiao)(jiao)(jiao)(jiao)(jiao)在(zai)(zai)(zai)(zai)接(jie)頭芯(xin)套與橡(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)軟管的觸碰內(nei)(nei)(nei)孔內(nei)(nei)(nei)沉積，減少(shao)商(shang)品(pin)流通橫截面(mian)；過(guo)薄會(hui)在(zai)(zai)(zai)(zai)壓扣時被壓裂。另外內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)壁厚勻(yun)(yun)稱性(xing)(xing)(xing)也很重要。假如薄厚不勻(yun)(yun)，縮(suo)小后(hou)會(hui)導(dao)致一(yi)面(mian)裂斷、一(yi)面(mian)堆(dui)膠(jiao)(jiao)(jiao)(jiao)(jiao)。內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)出現的浮銹也是(shi)危害(hai)(hai)性(xing)(xing)(xing)能(neng)(neng)品(pin)質(zhi)的關(guan)鍵(jian)要素。

２）高壓(ya)膠管(guan)關鍵借助提高層(ceng)(ceng)(ceng)來(lai)承(cheng)(cheng)受力。手工(gong)(gong)(gong)編織橡膠軟管(guan)是靠膠漿與內外黏膠粘緊(jin)，因(yin)(yin)為同一(yi)(yi)手工(gong)(gong)(gong)編織層(ceng)(ceng)(ceng)內不(bu)銹(xiu)鋼(gang)(gang)絲中間(jian)的(de)互相觸(chu)碰，在(zai)承(cheng)(cheng)擔氣(qi)體(ti)壓(ya)力的(de)時(shi)候會因(yin)(yin)分別伸縮式(shi)不(bu)一(yi)(yi)而導致不(bu)銹(xiu)鋼(gang)(gang)絲彼此(ci)之間(jian)的(de)摩擦而危害(hai)其使用(yong)性能(neng)。而螺旋(xuan)波紋(wen)管(guan)是由盤(pan)繞方(fang)位(wei)不(bu)一(yi)(yi)樣(yang)的(de)雙層(ceng)(ceng)(ceng)產生一(yi)(yi)個(ge)工(gong)(gong)(gong)作中層(ceng)(ceng)(ceng)，在(zai)雙層(ceng)(ceng)(ceng)中間(jian)有(you)正中間(jian)膠，因(yin)(yin)而同一(yi)(yi)工(gong)(gong)(gong)作中層(ceng)(ceng)(ceng)的(de)雙層(ceng)(ceng)(ceng)不(bu)銹(xiu)鋼(gang)(gang)絲中間(jian)沒有(you)交(jiao)(jiao)接(jie)點。因(yin)(yin)此(ci) 不(bu)容易(yi)在(zai)承(cheng)(cheng)擔氣(qi)體(ti)壓(ya)力時(shi)同于不(bu)銹(xiu)鋼(gang)(gang)絲間(jian)的(de)交(jiao)(jiao)叉(cha)式(shi)彎折(zhe)而產生應力或(huo)磨擦磨壞。故使用(yong)性能(neng)好，能(neng)承(cheng)(cheng)擔髙(gao)壓(ya)。

３）高壓膠(jiao)管的外膠(jiao)層粘在提高層上起維(wei)護功效，一般選用氯丁膠(jiao)。應留意避免 其脆(cui)化開裂而危害全部橡膠(jiao)軟(ruan)管的使用壽命(ming)。