高壓膠管接頭總成構造和性能(neng)的(de)關(guan)聯

１、橡膠軟管總成

1）高(gao)壓(ya)膠(jiao)(jiao)管由內(nei)膠(jiao)(jiao)層(ceng)(ceng)、提(ti)(ti)高(gao)層(ceng)(ceng)和(he)(he)外膠(jiao)(jiao)層(ceng)(ceng)構成(cheng)（如圖例(li)），內(nei)膠(jiao)(jiao)層(ceng)(ceng)立(li)即與(yu)液(ye)(ye)壓(ya)油觸(chu)碰，故規定在(zai)(zai)(zai)長期性(xing)(xing)(xing)運行狀(zhuang)態下(xia)不(bu)可受液(ye)(ye)體浸蝕，能(neng)補漏。在(zai)(zai)(zai)提(ti)(ti)高(gao)層(ceng)(ceng)功效(xiao)下(xia)會(hui)承擔一定工作壓(ya)力。因(yin)而，宜選用丁腈橡膠(jiao)(jiao)，除塑(su)膠(jiao)(jiao)粒外，危害(hai)性(xing)(xing)(xing)能(neng)的(de)關鍵要素也(ye)有(you)內(nei)膠(jiao)(jiao)層(ceng)(ceng)的(de)強(qiang)度、薄(bo)厚和(he)(he)永久性(xing)(xing)(xing)形變(bian)量(liang)(liang)。強(qiang)度和(he)(he)永久性(xing)(xing)(xing)形變(bian)量(liang)(liang)對密(mi)封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)危害(hai)非常(chang)大。一般強(qiang)度高(gao)、縮小(xiao)后的(de)永久性(xing)(xing)(xing)形變(bian)量(liang)(liang)小(xiao)，密(mi)封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)則越好。一般是在(zai)(zai)(zai)７０～８５邵氏硬度，縮小(xiao)永久性(xing)(xing)(xing)形變(bian)５０％時。內(nei)膠(jiao)(jiao)層(ceng)(ceng)薄(bo)厚建(jian)議是為１．５～２．５ｍｍ，太厚會(hui)在(zai)(zai)(zai)壓(ya)扣時提(ti)(ti)升其流(liu)動率，導(dao)致(zhi)(zhi)不(bu)必要的(de)膠(jiao)(jiao)在(zai)(zai)(zai)接頭芯套與(yu)橡膠(jiao)(jiao)軟管的(de)觸(chu)碰內(nei)孔內(nei)沉(chen)積，減少商品流(liu)通(tong)橫截面；過薄(bo)會(hui)在(zai)(zai)(zai)壓(ya)扣時被壓(ya)裂。另(ling)外內(nei)膠(jiao)(jiao)層(ceng)(ceng)壁厚勻(yun)(yun)稱性(xing)(xing)(xing)也(ye)很重(zhong)要。假如薄(bo)厚不(bu)勻(yun)(yun)，縮小(xiao)后會(hui)導(dao)致(zhi)(zhi)一面裂斷、一面堆膠(jiao)(jiao)。內(nei)膠(jiao)(jiao)層(ceng)(ceng)表層(ceng)(ceng)出(chu)現的(de)浮銹也(ye)是危害(hai)性(xing)(xing)(xing)能(neng)品質的(de)關鍵要素。

２）高壓膠(jiao)(jiao)管關鍵借助提高層(ceng)來承(cheng)受力。手(shou)(shou)工(gong)編(bian)織(zhi)(zhi)橡(xiang)膠(jiao)(jiao)軟管是靠(kao)膠(jiao)(jiao)漿與內外黏(nian)膠(jiao)(jiao)粘緊，因(yin)為同(tong)一(yi)手(shou)(shou)工(gong)編(bian)織(zhi)(zhi)層(ceng)內不(bu)(bu)銹鋼(gang)絲中(zhong)(zhong)(zhong)(zhong)間(jian)(jian)(jian)(jian)的互(hu)相觸碰，在(zai)承(cheng)擔(dan)氣(qi)體壓力的時(shi)候會(hui)因(yin)分別(bie)伸(shen)縮式不(bu)(bu)一(yi)而(er)導致(zhi)不(bu)(bu)銹鋼(gang)絲彼此(ci)之間(jian)(jian)(jian)(jian)的摩擦(ca)而(er)危(wei)害其使(shi)用(yong)(yong)性能。而(er)螺旋(xuan)波紋(wen)管是由(you)盤(pan)繞方(fang)位不(bu)(bu)一(yi)樣的雙(shuang)層(ceng)產生一(yi)個(ge)工(gong)作中(zhong)(zhong)(zhong)(zhong)層(ceng)，在(zai)雙(shuang)層(ceng)中(zhong)(zhong)(zhong)(zhong)間(jian)(jian)(jian)(jian)有正中(zhong)(zhong)(zhong)(zhong)間(jian)(jian)(jian)(jian)膠(jiao)(jiao)，因(yin)而(er)同(tong)一(yi)工(gong)作中(zhong)(zhong)(zhong)(zhong)層(ceng)的雙(shuang)層(ceng)不(bu)(bu)銹鋼(gang)絲中(zhong)(zhong)(zhong)(zhong)間(jian)(jian)(jian)(jian)沒有交接點。因(yin)此(ci) 不(bu)(bu)容易(yi)在(zai)承(cheng)擔(dan)氣(qi)體壓力時(shi)同(tong)于不(bu)(bu)銹鋼(gang)絲間(jian)(jian)(jian)(jian)的交叉式彎折而(er)產生應力或磨擦(ca)磨壞。故使(shi)用(yong)(yong)性能好，能承(cheng)擔(dan)髙壓。

３）高(gao)壓膠(jiao)(jiao)管的外(wai)膠(jiao)(jiao)層粘在(zai)提高(gao)層上起維(wei)護(hu)功效，一(yi)般選(xuan)用氯丁膠(jiao)(jiao)。應(ying)留意避(bi)免 其脆化(hua)開裂(lie)而危(wei)害全部橡膠(jiao)(jiao)軟管的使用壽命。