高壓膠管接頭總成(cheng)構造和性能的關(guan)聯(lian)

１、橡膠軟管總成

1）高(gao)壓(ya)(ya)膠(jiao)(jiao)(jiao)管(guan)由內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)、提(ti)高(gao)層(ceng)(ceng)(ceng)(ceng)和外(wai)(wai)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)構成（如圖(tu)例(li)），內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)立即與(yu)液壓(ya)(ya)油觸碰，故規定在(zai)長期性(xing)(xing)運行狀態下不可受液體浸蝕，能(neng)補漏(lou)。在(zai)提(ti)高(gao)層(ceng)(ceng)(ceng)(ceng)功效(xiao)下會(hui)(hui)承擔一定工作壓(ya)(ya)力。因(yin)而，宜選用丁腈(jing)橡膠(jiao)(jiao)(jiao)，除塑膠(jiao)(jiao)(jiao)粒外(wai)(wai)，危(wei)害(hai)性(xing)(xing)能(neng)的(de)關(guan)鍵(jian)要素也有內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)的(de)強度(du)、薄(bo)厚(hou)和永久(jiu)性(xing)(xing)形(xing)(xing)變量(liang)。強度(du)和永久(jiu)性(xing)(xing)形(xing)(xing)變量(liang)對(dui)密封性(xing)(xing)性(xing)(xing)能(neng)危(wei)害(hai)非常大(da)。一般強度(du)高(gao)、縮(suo)小(xiao)后(hou)的(de)永久(jiu)性(xing)(xing)形(xing)(xing)變量(liang)小(xiao)，密封性(xing)(xing)性(xing)(xing)能(neng)則(ze)越好。一般是在(zai)７０～８５邵(shao)氏硬度(du)，縮(suo)小(xiao)永久(jiu)性(xing)(xing)形(xing)(xing)變５０％時。內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)薄(bo)厚(hou)建議(yi)是為１．５～２．５ｍｍ，太厚(hou)會(hui)(hui)在(zai)壓(ya)(ya)扣時提(ti)升其流動(dong)率，導致(zhi)不必要的(de)膠(jiao)(jiao)(jiao)在(zai)接頭芯(xin)套(tao)與(yu)橡膠(jiao)(jiao)(jiao)軟(ruan)管(guan)的(de)觸碰內(nei)(nei)孔內(nei)(nei)沉積，減少(shao)商(shang)品流通橫截面(mian)；過薄(bo)會(hui)(hui)在(zai)壓(ya)(ya)扣時被(bei)壓(ya)(ya)裂。另外(wai)(wai)內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)壁(bi)厚(hou)勻稱性(xing)(xing)也很重要。假如薄(bo)厚(hou)不勻，縮(suo)小(xiao)后(hou)會(hui)(hui)導致(zhi)一面(mian)裂斷、一面(mian)堆(dui)膠(jiao)(jiao)(jiao)。內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)(ceng)出現的(de)浮銹也是危(wei)害(hai)性(xing)(xing)能(neng)品質的(de)關(guan)鍵(jian)要素。

２）高壓(ya)膠(jiao)(jiao)管(guan)關鍵借助(zhu)提高層(ceng)(ceng)來承(cheng)(cheng)受(shou)力。手工(gong)(gong)(gong)(gong)編織(zhi)橡膠(jiao)(jiao)軟管(guan)是靠膠(jiao)(jiao)漿與內(nei)(nei)外黏膠(jiao)(jiao)粘緊，因為同(tong)(tong)一(yi)手工(gong)(gong)(gong)(gong)編織(zhi)層(ceng)(ceng)內(nei)(nei)不(bu)銹鋼(gang)絲中間(jian)(jian)(jian)的(de)(de)互相(xiang)觸(chu)碰，在承(cheng)(cheng)擔氣體壓(ya)力的(de)(de)時(shi)候(hou)會因分別伸縮(suo)式不(bu)一(yi)而(er)導(dao)致不(bu)銹鋼(gang)絲彼此(ci)之(zhi)間(jian)(jian)(jian)的(de)(de)摩(mo)擦而(er)危害其(qi)使(shi)用性能。而(er)螺(luo)旋波紋管(guan)是由(you)盤(pan)繞方位不(bu)一(yi)樣的(de)(de)雙層(ceng)(ceng)產(chan)生(sheng)一(yi)個(ge)工(gong)(gong)(gong)(gong)作中層(ceng)(ceng)，在雙層(ceng)(ceng)中間(jian)(jian)(jian)有(you)正中間(jian)(jian)(jian)膠(jiao)(jiao)，因而(er)同(tong)(tong)一(yi)工(gong)(gong)(gong)(gong)作中層(ceng)(ceng)的(de)(de)雙層(ceng)(ceng)不(bu)銹鋼(gang)絲中間(jian)(jian)(jian)沒有(you)交(jiao)接(jie)點(dian)。因此(ci) 不(bu)容易在承(cheng)(cheng)擔氣體壓(ya)力時(shi)同(tong)(tong)于不(bu)銹鋼(gang)絲間(jian)(jian)(jian)的(de)(de)交(jiao)叉式彎折而(er)產(chan)生(sheng)應力或磨擦磨壞。故使(shi)用性能好(hao)，能承(cheng)(cheng)擔髙壓(ya)。

３）高壓(ya)膠管的外膠層粘(zhan)在提高層上(shang)起維(wei)護功(gong)效(xiao)，一(yi)般選用氯(lv)丁膠。應留(liu)意避免(mian) 其脆化開裂而危(wei)害(hai)全部橡膠軟管的使(shi)用壽命。