高壓膠管接頭總(zong)成構造(zao)和(he)性(xing)能的關聯

１、橡膠軟管總成

1）高壓膠管(guan)由內(nei)膠層(ceng)(ceng)(ceng)(ceng)、提(ti)高層(ceng)(ceng)(ceng)(ceng)和(he)外膠層(ceng)(ceng)(ceng)(ceng)構成(cheng)（如(ru)(ru)圖例），內(nei)膠層(ceng)(ceng)(ceng)(ceng)立即與液壓油觸(chu)碰，故規(gui)定(ding)在(zai)(zai)長期性運行狀態下(xia)不可(ke)受(shou)液體浸蝕，能(neng)補漏。在(zai)(zai)提(ti)高層(ceng)(ceng)(ceng)(ceng)功效下(xia)會承擔一(yi)定(ding)工作壓力。因而，宜(yi)選(xuan)用丁腈橡膠，除塑膠粒外，危(wei)害性能(neng)的(de)關(guan)(guan)鍵(jian)要素(su)也(ye)有內(nei)膠層(ceng)(ceng)(ceng)(ceng)的(de)強(qiang)度、薄(bo)(bo)(bo)厚和(he)永(yong)(yong)久性形變(bian)量(liang)。強(qiang)度和(he)永(yong)(yong)久性形變(bian)量(liang)對密(mi)封性性能(neng)危(wei)害非常大(da)。一(yi)般(ban)強(qiang)度高、縮小(xiao)后的(de)永(yong)(yong)久性形變(bian)量(liang)小(xiao)，密(mi)封性性能(neng)則越好。一(yi)般(ban)是在(zai)(zai)７０～８５邵氏硬度，縮小(xiao)永(yong)(yong)久性形變(bian)５０％時(shi)。內(nei)膠層(ceng)(ceng)(ceng)(ceng)薄(bo)(bo)(bo)厚建議是為１．５～２．５ｍｍ，太厚會在(zai)(zai)壓扣(kou)時(shi)提(ti)升其流(liu)動率，導(dao)致不必要的(de)膠在(zai)(zai)接(jie)頭芯套與橡膠軟管(guan)的(de)觸(chu)碰內(nei)孔內(nei)沉積，減少商(shang)品流(liu)通橫截面(mian)(mian)；過薄(bo)(bo)(bo)會在(zai)(zai)壓扣(kou)時(shi)被壓裂(lie)(lie)。另(ling)外內(nei)膠層(ceng)(ceng)(ceng)(ceng)壁厚勻稱性也(ye)很(hen)重要。假(jia)如(ru)(ru)薄(bo)(bo)(bo)厚不勻，縮小(xiao)后會導(dao)致一(yi)面(mian)(mian)裂(lie)(lie)斷、一(yi)面(mian)(mian)堆(dui)膠。內(nei)膠層(ceng)(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)(ceng)出(chu)現的(de)浮銹也(ye)是危(wei)害性能(neng)品質的(de)關(guan)(guan)鍵(jian)要素(su)。

２）高壓(ya)膠(jiao)管(guan)關鍵借助提高層(ceng)來承(cheng)(cheng)受(shou)力。手工編(bian)織(zhi)橡膠(jiao)軟管(guan)是(shi)靠膠(jiao)漿(jiang)與內外黏膠(jiao)粘緊，因為(wei)同(tong)一手工編(bian)織(zhi)層(ceng)內不(bu)銹鋼絲(si)(si)中(zhong)(zhong)間(jian)的互相觸碰，在(zai)承(cheng)(cheng)擔氣體壓(ya)力的時(shi)候會因分別伸縮式(shi)不(bu)一而(er)導致不(bu)銹鋼絲(si)(si)彼此之間(jian)的摩擦而(er)危害其使用(yong)(yong)性(xing)(xing)能(neng)。而(er)螺旋波(bo)紋管(guan)是(shi)由(you)盤繞(rao)方位不(bu)一樣(yang)的雙(shuang)層(ceng)產(chan)生(sheng)一個工作中(zhong)(zhong)層(ceng)，在(zai)雙(shuang)層(ceng)中(zhong)(zhong)間(jian)有正中(zhong)(zhong)間(jian)膠(jiao)，因而(er)同(tong)一工作中(zhong)(zhong)層(ceng)的雙(shuang)層(ceng)不(bu)銹鋼絲(si)(si)中(zhong)(zhong)間(jian)沒有交(jiao)接點(dian)。因此 不(bu)容易在(zai)承(cheng)(cheng)擔氣體壓(ya)力時(shi)同(tong)于不(bu)銹鋼絲(si)(si)間(jian)的交(jiao)叉式(shi)彎折而(er)產(chan)生(sheng)應(ying)力或磨(mo)擦磨(mo)壞。故使用(yong)(yong)性(xing)(xing)能(neng)好，能(neng)承(cheng)(cheng)擔髙壓(ya)。

３）高壓膠(jiao)管的(de)外膠(jiao)層(ceng)粘在提高層(ceng)上起維護功(gong)效，一般選用氯丁膠(jiao)。應留意避免 其脆化開(kai)裂(lie)而危害全(quan)部橡膠(jiao)軟管的(de)使用壽命(ming)。