1、橡膠軟管總成
1)高(gao)(gao)壓(ya)膠(jiao)(jiao)(jiao)管(guan)(guan)由內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)、提(ti)高(gao)(gao)層(ceng)(ceng)和(he)外膠(jiao)(jiao)(jiao)層(ceng)(ceng)構成(如圖(tu)例),內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)立即與液壓(ya)油(you)觸(chu)(chu)碰,故規定在長期性(xing)運行狀態下不可受液體浸蝕,能(neng)(neng)補漏。在提(ti)高(gao)(gao)層(ceng)(ceng)功效(xiao)下會承擔(dan)一(yi)(yi)(yi)定工作壓(ya)力。因而,宜選用丁腈橡膠(jiao)(jiao)(jiao),除塑膠(jiao)(jiao)(jiao)粒外,危害(hai)性(xing)能(neng)(neng)的(de)關鍵要素也有(you)內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)的(de)強度(du)、薄厚和(he)永(yong)久性(xing)形變量(liang)(liang)。強度(du)和(he)永(yong)久性(xing)形變量(liang)(liang)對密封性(xing)性(xing)能(neng)(neng)危害(hai)非常(chang)大。一(yi)(yi)(yi)般(ban)(ban)強度(du)高(gao)(gao)、縮(suo)小(xiao)(xiao)(xiao)后(hou)的(de)永(yong)久性(xing)形變量(liang)(liang)小(xiao)(xiao)(xiao),密封性(xing)性(xing)能(neng)(neng)則越好。一(yi)(yi)(yi)般(ban)(ban)是(shi)在70~85邵氏硬度(du),縮(suo)小(xiao)(xiao)(xiao)永(yong)久性(xing)形變50%時(shi)。內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)薄厚建(jian)議是(shi)為(wei)1.5~2.5mm,太厚會在壓(ya)扣時(shi)提(ti)升其(qi)流動率,導致不必要的(de)膠(jiao)(jiao)(jiao)在接(jie)頭(tou)芯套與橡膠(jiao)(jiao)(jiao)軟(ruan)管(guan)(guan)的(de)觸(chu)(chu)碰內(nei)(nei)孔內(nei)(nei)沉積(ji),減少商(shang)品流通橫(heng)截面(mian)(mian);過薄會在壓(ya)扣時(shi)被壓(ya)裂。另外內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)壁厚勻稱性(xing)也很重(zhong)要。假(jia)如薄厚不勻,縮(suo)小(xiao)(xiao)(xiao)后(hou)會導致一(yi)(yi)(yi)面(mian)(mian)裂斷、一(yi)(yi)(yi)面(mian)(mian)堆膠(jiao)(jiao)(jiao)。內(nei)(nei)膠(jiao)(jiao)(jiao)層(ceng)(ceng)表層(ceng)(ceng)出(chu)現(xian)的(de)浮銹也是(shi)危害(hai)性(xing)能(neng)(neng)品質(zhi)的(de)關鍵要素。
2)高(gao)壓(ya)膠(jiao)管(guan)(guan)關(guan)鍵借助(zhu)提高(gao)層(ceng)來承(cheng)(cheng)受力(li)。手工編織橡膠(jiao)軟管(guan)(guan)是靠膠(jiao)漿與內外黏膠(jiao)粘緊,因為同一(yi)手工編織層(ceng)內不(bu)(bu)銹(xiu)鋼(gang)絲中(zhong)(zhong)間(jian)的(de)(de)(de)(de)互相(xiang)觸碰,在承(cheng)(cheng)擔氣體壓(ya)力(li)的(de)(de)(de)(de)時候會因分別(bie)伸(shen)縮(suo)式不(bu)(bu)一(yi)而(er)導(dao)致不(bu)(bu)銹(xiu)鋼(gang)絲彼此之間(jian)的(de)(de)(de)(de)摩(mo)擦而(er)危害其使(shi)用性(xing)能。而(er)螺旋(xuan)波紋(wen)管(guan)(guan)是由盤(pan)繞(rao)方(fang)位不(bu)(bu)一(yi)樣的(de)(de)(de)(de)雙(shuang)層(ceng)產(chan)生一(yi)個工作中(zhong)(zhong)層(ceng),在雙(shuang)層(ceng)中(zhong)(zhong)間(jian)有正中(zhong)(zhong)間(jian)膠(jiao),因而(er)同一(yi)工作中(zhong)(zhong)層(ceng)的(de)(de)(de)(de)雙(shuang)層(ceng)不(bu)(bu)銹(xiu)鋼(gang)絲中(zhong)(zhong)間(jian)沒有交接點。因此 不(bu)(bu)容(rong)易在承(cheng)(cheng)擔氣體壓(ya)力(li)時同于不(bu)(bu)銹(xiu)鋼(gang)絲間(jian)的(de)(de)(de)(de)交叉式彎折而(er)產(chan)生應力(li)或磨擦磨壞。故(gu)使(shi)用性(xing)能好,能承(cheng)(cheng)擔髙壓(ya)。
3)高壓(ya)膠(jiao)(jiao)管的外膠(jiao)(jiao)層(ceng)粘(zhan)在提(ti)高層(ceng)上起維護功效,一般選用氯丁(ding)膠(jiao)(jiao)。應留(liu)意避免 其脆化開裂(lie)而危害全部橡(xiang)膠(jiao)(jiao)軟(ruan)管的使用壽命。