高壓膠管接頭總(zong)成構造(zao)和性能的關(guan)聯

１、橡膠軟管總成

1）高(gao)壓膠(jiao)管由內(nei)膠(jiao)層(ceng)、提(ti)(ti)高(gao)層(ceng)和外(wai)(wai)膠(jiao)層(ceng)構成（如(ru)圖例），內(nei)膠(jiao)層(ceng)立即(ji)與(yu)液壓油觸碰(peng)，故規定在(zai)(zai)長期性(xing)(xing)(xing)運行(xing)狀(zhuang)態下不可(ke)受(shou)液體浸蝕(shi)，能(neng)(neng)補漏。在(zai)(zai)提(ti)(ti)高(gao)層(ceng)功效(xiao)下會(hui)承(cheng)擔(dan)一定工(gong)作壓力。因而，宜選(xuan)用丁腈橡膠(jiao)，除塑膠(jiao)粒外(wai)(wai)，危(wei)害(hai)(hai)性(xing)(xing)(xing)能(neng)(neng)的(de)(de)關鍵要(yao)(yao)(yao)素(su)(su)也(ye)(ye)有內(nei)膠(jiao)層(ceng)的(de)(de)強(qiang)度(du)(du)、薄(bo)厚(hou)和永久(jiu)(jiu)性(xing)(xing)(xing)形變(bian)量(liang)。強(qiang)度(du)(du)和永久(jiu)(jiu)性(xing)(xing)(xing)形變(bian)量(liang)對密封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)(neng)危(wei)害(hai)(hai)非(fei)常大。一般(ban)強(qiang)度(du)(du)高(gao)、縮(suo)小后的(de)(de)永久(jiu)(jiu)性(xing)(xing)(xing)形變(bian)量(liang)小，密封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)(neng)則越好。一般(ban)是(shi)在(zai)(zai)７０～８５邵氏硬度(du)(du)，縮(suo)小永久(jiu)(jiu)性(xing)(xing)(xing)形變(bian)５０％時。內(nei)膠(jiao)層(ceng)薄(bo)厚(hou)建議是(shi)為１．５～２．５ｍｍ，太厚(hou)會(hui)在(zai)(zai)壓扣(kou)時提(ti)(ti)升其流(liu)動率(lv)，導(dao)致不必要(yao)(yao)(yao)的(de)(de)膠(jiao)在(zai)(zai)接頭芯(xin)套與(yu)橡膠(jiao)軟管的(de)(de)觸碰(peng)內(nei)孔內(nei)沉積(ji)，減少商品流(liu)通橫截(jie)面(mian)；過薄(bo)會(hui)在(zai)(zai)壓扣(kou)時被壓裂。另外(wai)(wai)內(nei)膠(jiao)層(ceng)壁厚(hou)勻稱性(xing)(xing)(xing)也(ye)(ye)很(hen)重要(yao)(yao)(yao)。假如(ru)薄(bo)厚(hou)不勻，縮(suo)小后會(hui)導(dao)致一面(mian)裂斷、一面(mian)堆膠(jiao)。內(nei)膠(jiao)層(ceng)表層(ceng)出現(xian)的(de)(de)浮銹(xiu)也(ye)(ye)是(shi)危(wei)害(hai)(hai)性(xing)(xing)(xing)能(neng)(neng)品質的(de)(de)關鍵要(yao)(yao)(yao)素(su)(su)。

２）高壓膠管(guan)關鍵(jian)借助提高層(ceng)來承(cheng)受力。手工(gong)(gong)編(bian)織橡膠軟管(guan)是靠膠漿與內外黏膠粘緊，因(yin)(yin)為(wei)同(tong)一(yi)(yi)(yi)(yi)手工(gong)(gong)編(bian)織層(ceng)內不(bu)(bu)(bu)銹(xiu)鋼絲中(zhong)(zhong)(zhong)間(jian)的(de)互相(xiang)觸碰，在(zai)承(cheng)擔氣體(ti)壓力的(de)時候會因(yin)(yin)分別伸縮式不(bu)(bu)(bu)一(yi)(yi)(yi)(yi)而(er)(er)導致不(bu)(bu)(bu)銹(xiu)鋼絲彼(bi)此(ci)之間(jian)的(de)摩擦而(er)(er)危害(hai)其使(shi)用性能(neng)。而(er)(er)螺旋波(bo)紋(wen)管(guan)是由(you)盤繞(rao)方(fang)位不(bu)(bu)(bu)一(yi)(yi)(yi)(yi)樣的(de)雙層(ceng)產生一(yi)(yi)(yi)(yi)個工(gong)(gong)作中(zhong)(zhong)(zhong)層(ceng)，在(zai)雙層(ceng)中(zhong)(zhong)(zhong)間(jian)有正中(zhong)(zhong)(zhong)間(jian)膠，因(yin)(yin)而(er)(er)同(tong)一(yi)(yi)(yi)(yi)工(gong)(gong)作中(zhong)(zhong)(zhong)層(ceng)的(de)雙層(ceng)不(bu)(bu)(bu)銹(xiu)鋼絲中(zhong)(zhong)(zhong)間(jian)沒有交接點。因(yin)(yin)此(ci) 不(bu)(bu)(bu)容易在(zai)承(cheng)擔氣體(ti)壓力時同(tong)于(yu)不(bu)(bu)(bu)銹(xiu)鋼絲間(jian)的(de)交叉式彎折而(er)(er)產生應力或磨(mo)擦磨(mo)壞。故使(shi)用性能(neng)好，能(neng)承(cheng)擔髙(gao)壓。

３）高(gao)壓膠管(guan)的外(wai)膠層粘在提高(gao)層上起維護功(gong)效，一般選用(yong)氯(lv)丁膠。應留意避免 其脆化開裂而危害(hai)全(quan)部(bu)橡膠軟管(guan)的使用(yong)壽(shou)命。