高壓膠管接頭總成構(gou)造和性(xing)能的關聯(lian)

１、橡膠軟管總成

1）高壓膠(jiao)(jiao)管由內(nei)膠(jiao)(jiao)層、提高層和外(wai)(wai)膠(jiao)(jiao)層構成（如圖例），內(nei)膠(jiao)(jiao)層立(li)即與(yu)液(ye)(ye)壓油觸碰，故規定(ding)在(zai)(zai)長期性(xing)(xing)(xing)(xing)運行狀(zhuang)態下(xia)不(bu)可(ke)受液(ye)(ye)體(ti)浸蝕(shi)，能(neng)補漏。在(zai)(zai)提高層功效(xiao)下(xia)會(hui)承擔一(yi)定(ding)工作壓力。因而，宜選(xuan)用丁腈橡膠(jiao)(jiao)，除塑膠(jiao)(jiao)粒外(wai)(wai)，危(wei)(wei)害(hai)(hai)性(xing)(xing)(xing)(xing)能(neng)的(de)關(guan)鍵要(yao)素也有內(nei)膠(jiao)(jiao)層的(de)強(qiang)度、薄(bo)厚(hou)(hou)(hou)和永(yong)(yong)久(jiu)性(xing)(xing)(xing)(xing)形變(bian)(bian)量(liang)。強(qiang)度和永(yong)(yong)久(jiu)性(xing)(xing)(xing)(xing)形變(bian)(bian)量(liang)對密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)危(wei)(wei)害(hai)(hai)非常大。一(yi)般強(qiang)度高、縮小(xiao)后的(de)永(yong)(yong)久(jiu)性(xing)(xing)(xing)(xing)形變(bian)(bian)量(liang)小(xiao)，密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)則越好。一(yi)般是在(zai)(zai)７０～８５邵氏(shi)硬度，縮小(xiao)永(yong)(yong)久(jiu)性(xing)(xing)(xing)(xing)形變(bian)(bian)５０％時。內(nei)膠(jiao)(jiao)層薄(bo)厚(hou)(hou)(hou)建(jian)議(yi)是為１．５～２．５ｍｍ，太(tai)厚(hou)(hou)(hou)會(hui)在(zai)(zai)壓扣(kou)(kou)時提升其流(liu)動率，導致(zhi)(zhi)不(bu)必(bi)要(yao)的(de)膠(jiao)(jiao)在(zai)(zai)接頭芯(xin)套與(yu)橡膠(jiao)(jiao)軟管的(de)觸碰內(nei)孔內(nei)沉積，減少(shao)商品(pin)流(liu)通橫截面；過薄(bo)會(hui)在(zai)(zai)壓扣(kou)(kou)時被壓裂(lie)(lie)。另(ling)外(wai)(wai)內(nei)膠(jiao)(jiao)層壁厚(hou)(hou)(hou)勻稱性(xing)(xing)(xing)(xing)也很重要(yao)。假如薄(bo)厚(hou)(hou)(hou)不(bu)勻，縮小(xiao)后會(hui)導致(zhi)(zhi)一(yi)面裂(lie)(lie)斷(duan)、一(yi)面堆膠(jiao)(jiao)。內(nei)膠(jiao)(jiao)層表(biao)層出現(xian)的(de)浮銹(xiu)也是危(wei)(wei)害(hai)(hai)性(xing)(xing)(xing)(xing)能(neng)品(pin)質的(de)關(guan)鍵要(yao)素。

２）高壓(ya)(ya)膠(jiao)(jiao)管關鍵(jian)借助提(ti)高層(ceng)(ceng)來承(cheng)(cheng)受力(li)。手(shou)工(gong)編(bian)織橡膠(jiao)(jiao)軟管是靠(kao)膠(jiao)(jiao)漿與內(nei)外黏膠(jiao)(jiao)粘緊，因(yin)為(wei)同一(yi)(yi)手(shou)工(gong)編(bian)織層(ceng)(ceng)內(nei)不(bu)(bu)銹鋼(gang)絲(si)中間(jian)的(de)(de)互相(xiang)觸碰(peng)，在(zai)承(cheng)(cheng)擔(dan)(dan)氣體壓(ya)(ya)力(li)的(de)(de)時(shi)候會(hui)因(yin)分(fen)別伸縮(suo)式(shi)不(bu)(bu)一(yi)(yi)而(er)(er)導致不(bu)(bu)銹鋼(gang)絲(si)彼此之間(jian)的(de)(de)摩擦而(er)(er)危(wei)害其使(shi)用(yong)性能。而(er)(er)螺旋波紋(wen)管是由盤繞方位不(bu)(bu)一(yi)(yi)樣的(de)(de)雙(shuang)層(ceng)(ceng)產(chan)生(sheng)一(yi)(yi)個工(gong)作(zuo)中層(ceng)(ceng)，在(zai)雙(shuang)層(ceng)(ceng)中間(jian)有正中間(jian)膠(jiao)(jiao)，因(yin)而(er)(er)同一(yi)(yi)工(gong)作(zuo)中層(ceng)(ceng)的(de)(de)雙(shuang)層(ceng)(ceng)不(bu)(bu)銹鋼(gang)絲(si)中間(jian)沒有交(jiao)接點。因(yin)此 不(bu)(bu)容易在(zai)承(cheng)(cheng)擔(dan)(dan)氣體壓(ya)(ya)力(li)時(shi)同于不(bu)(bu)銹鋼(gang)絲(si)間(jian)的(de)(de)交(jiao)叉式(shi)彎折(zhe)而(er)(er)產(chan)生(sheng)應力(li)或磨擦磨壞。故使(shi)用(yong)性能好，能承(cheng)(cheng)擔(dan)(dan)髙壓(ya)(ya)。

３）高壓(ya)膠管(guan)的外膠層粘(zhan)在提(ti)高層上起維(wei)護功效(xiao)，一(yi)般選用(yong)氯丁膠。應(ying)留意避免 其脆化(hua)開(kai)裂而危害全部(bu)橡膠軟管(guan)的使用(yong)壽命。