1、橡膠軟管總成
1)高壓(ya)膠(jiao)(jiao)管由內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)、提高層(ceng)和(he)(he)外膠(jiao)(jiao)層(ceng)構成(如(ru)圖例),內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)立即與液壓(ya)油觸碰(peng),故規定在(zai)(zai)長期(qi)性(xing)(xing)(xing)運行(xing)狀態下不(bu)可受液體(ti)浸蝕,能(neng)(neng)補漏。在(zai)(zai)提高層(ceng)功效下會承(cheng)擔一(yi)(yi)定工作壓(ya)力(li)。因而,宜(yi)選用丁腈橡膠(jiao)(jiao),除塑膠(jiao)(jiao)粒外,危害性(xing)(xing)(xing)能(neng)(neng)的(de)(de)關(guan)鍵(jian)要(yao)素也(ye)(ye)有(you)內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)的(de)(de)強度、薄(bo)厚(hou)和(he)(he)永久(jiu)性(xing)(xing)(xing)形(xing)變量(liang)。強度和(he)(he)永久(jiu)性(xing)(xing)(xing)形(xing)變量(liang)對密封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)(neng)危害非常大。一(yi)(yi)般強度高、縮(suo)小(xiao)后的(de)(de)永久(jiu)性(xing)(xing)(xing)形(xing)變量(liang)小(xiao),密封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)(neng)則越好(hao)。一(yi)(yi)般是(shi)(shi)在(zai)(zai)70~85邵氏硬度,縮(suo)小(xiao)永久(jiu)性(xing)(xing)(xing)形(xing)變50%時。內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)薄(bo)厚(hou)建議是(shi)(shi)為1.5~2.5mm,太厚(hou)會在(zai)(zai)壓(ya)扣時提升(sheng)其(qi)流(liu)動率,導致不(bu)必要(yao)的(de)(de)膠(jiao)(jiao)在(zai)(zai)接頭芯(xin)套與橡膠(jiao)(jiao)軟管的(de)(de)觸碰(peng)內(nei)(nei)(nei)孔(kong)內(nei)(nei)(nei)沉積,減少商品流(liu)通(tong)橫截面(mian)(mian);過薄(bo)會在(zai)(zai)壓(ya)扣時被壓(ya)裂(lie)。另(ling)外內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)壁厚(hou)勻稱性(xing)(xing)(xing)也(ye)(ye)很重要(yao)。假如(ru)薄(bo)厚(hou)不(bu)勻,縮(suo)小(xiao)后會導致一(yi)(yi)面(mian)(mian)裂(lie)斷、一(yi)(yi)面(mian)(mian)堆膠(jiao)(jiao)。內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)表層(ceng)出現(xian)的(de)(de)浮銹也(ye)(ye)是(shi)(shi)危害性(xing)(xing)(xing)能(neng)(neng)品質(zhi)的(de)(de)關(guan)鍵(jian)要(yao)素。
2)高壓(ya)(ya)膠(jiao)管關鍵借助提高層(ceng)(ceng)來(lai)承(cheng)(cheng)受力(li)(li)。手(shou)工編織橡膠(jiao)軟管是(shi)靠膠(jiao)漿與內(nei)外黏膠(jiao)粘緊,因(yin)(yin)為同一手(shou)工編織層(ceng)(ceng)內(nei)不(bu)(bu)(bu)銹(xiu)鋼絲(si)(si)中(zhong)(zhong)間的(de)(de)互(hu)相觸碰,在(zai)承(cheng)(cheng)擔(dan)氣(qi)體壓(ya)(ya)力(li)(li)的(de)(de)時候會因(yin)(yin)分別(bie)伸縮式不(bu)(bu)(bu)一而(er)(er)導(dao)致不(bu)(bu)(bu)銹(xiu)鋼絲(si)(si)彼此之(zhi)間的(de)(de)摩擦(ca)而(er)(er)危害其(qi)使用性(xing)能。而(er)(er)螺旋波紋管是(shi)由盤繞方位(wei)不(bu)(bu)(bu)一樣的(de)(de)雙(shuang)層(ceng)(ceng)產生(sheng)(sheng)一個(ge)工作中(zhong)(zhong)層(ceng)(ceng),在(zai)雙(shuang)層(ceng)(ceng)中(zhong)(zhong)間有正中(zhong)(zhong)間膠(jiao),因(yin)(yin)而(er)(er)同一工作中(zhong)(zhong)層(ceng)(ceng)的(de)(de)雙(shuang)層(ceng)(ceng)不(bu)(bu)(bu)銹(xiu)鋼絲(si)(si)中(zhong)(zhong)間沒有交接(jie)點(dian)。因(yin)(yin)此 不(bu)(bu)(bu)容(rong)易在(zai)承(cheng)(cheng)擔(dan)氣(qi)體壓(ya)(ya)力(li)(li)時同于不(bu)(bu)(bu)銹(xiu)鋼絲(si)(si)間的(de)(de)交叉式彎(wan)折而(er)(er)產生(sheng)(sheng)應(ying)力(li)(li)或磨(mo)擦(ca)磨(mo)壞。故使用性(xing)能好(hao),能承(cheng)(cheng)擔(dan)髙壓(ya)(ya)。
3)高(gao)壓膠管的外膠層粘在提高(gao)層上起維護功效,一般選(xuan)用氯丁膠。應留意避(bi)免 其脆化(hua)開(kai)裂而危害(hai)全部橡膠軟管的使用壽命。