1、橡膠軟管總成
1)高(gao)壓膠(jiao)管(guan)由內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)、提(ti)高(gao)層(ceng)(ceng)(ceng)和(he)外膠(jiao)層(ceng)(ceng)(ceng)構成(如圖例),內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)立(li)即與液(ye)壓油(you)觸碰(peng)(peng),故(gu)規(gui)定(ding)在(zai)長期性(xing)(xing)運行(xing)狀態下(xia)不可受液(ye)體浸蝕,能補漏。在(zai)提(ti)高(gao)層(ceng)(ceng)(ceng)功效(xiao)下(xia)會(hui)承擔一(yi)(yi)定(ding)工作壓力。因而(er),宜選用丁腈橡膠(jiao),除塑膠(jiao)粒外,危害性(xing)(xing)能的關鍵要素也(ye)有內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)的強度、薄(bo)厚(hou)和(he)永(yong)(yong)久(jiu)性(xing)(xing)形(xing)變量(liang)。強度和(he)永(yong)(yong)久(jiu)性(xing)(xing)形(xing)變量(liang)對(dui)密封性(xing)(xing)性(xing)(xing)能危害非常大。一(yi)(yi)般強度高(gao)、縮(suo)小(xiao)(xiao)后的永(yong)(yong)久(jiu)性(xing)(xing)形(xing)變量(liang)小(xiao)(xiao),密封性(xing)(xing)性(xing)(xing)能則(ze)越好。一(yi)(yi)般是在(zai)70~85邵氏硬度,縮(suo)小(xiao)(xiao)永(yong)(yong)久(jiu)性(xing)(xing)形(xing)變50%時。內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)薄(bo)厚(hou)建議是為(wei)1.5~2.5mm,太厚(hou)會(hui)在(zai)壓扣時提(ti)升其(qi)流動率,導致(zhi)不必要的膠(jiao)在(zai)接頭芯套與橡膠(jiao)軟管(guan)的觸碰(peng)(peng)內(nei)(nei)(nei)孔內(nei)(nei)(nei)沉積,減少(shao)商(shang)品流通橫截面;過(guo)薄(bo)會(hui)在(zai)壓扣時被壓裂。另外內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)壁厚(hou)勻稱(cheng)性(xing)(xing)也(ye)很重(zhong)要。假(jia)如薄(bo)厚(hou)不勻,縮(suo)小(xiao)(xiao)后會(hui)導致(zhi)一(yi)(yi)面裂斷、一(yi)(yi)面堆(dui)膠(jiao)。內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)表(biao)層(ceng)(ceng)(ceng)出現的浮(fu)銹也(ye)是危害性(xing)(xing)能品質的關鍵要素。
2)高壓(ya)(ya)(ya)膠管(guan)關鍵借助提(ti)高層來承(cheng)受力(li)(li)。手(shou)工(gong)編織(zhi)橡膠軟管(guan)是靠膠漿(jiang)與內外(wai)黏膠粘緊,因(yin)(yin)為同一手(shou)工(gong)編織(zhi)層內不銹(xiu)鋼絲中(zhong)間(jian)的互相觸(chu)碰,在承(cheng)擔(dan)(dan)氣(qi)體壓(ya)(ya)(ya)力(li)(li)的時候會因(yin)(yin)分別伸縮式不一而(er)導致不銹(xiu)鋼絲彼(bi)此之(zhi)間(jian)的摩(mo)擦(ca)而(er)危害其使用性能(neng)。而(er)螺旋波紋管(guan)是由盤繞(rao)方位(wei)不一樣(yang)的雙(shuang)層產(chan)生(sheng)一個工(gong)作中(zhong)層,在雙(shuang)層中(zhong)間(jian)有正中(zhong)間(jian)膠,因(yin)(yin)而(er)同一工(gong)作中(zhong)層的雙(shuang)層不銹(xiu)鋼絲中(zhong)間(jian)沒有交(jiao)接點。因(yin)(yin)此 不容易在承(cheng)擔(dan)(dan)氣(qi)體壓(ya)(ya)(ya)力(li)(li)時同于不銹(xiu)鋼絲間(jian)的交(jiao)叉式彎折而(er)產(chan)生(sheng)應力(li)(li)或磨(mo)擦(ca)磨(mo)壞。故(gu)使用性能(neng)好,能(neng)承(cheng)擔(dan)(dan)髙壓(ya)(ya)(ya)。
3)高(gao)壓(ya)膠(jiao)管的外膠(jiao)層粘在(zai)提高(gao)層上起維護功效,一(yi)般選用氯(lv)丁膠(jiao)。應留意避免(mian) 其脆(cui)化開裂而危害全部橡(xiang)膠(jiao)軟(ruan)管的使用壽命。