1、橡膠軟管總成
1)高壓(ya)(ya)(ya)膠(jiao)(jiao)管(guan)由內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)、提高層(ceng)(ceng)(ceng)(ceng)和外膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)構成(如(ru)圖(tu)例),內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)立即與(yu)液壓(ya)(ya)(ya)油(you)觸(chu)碰(peng),故(gu)規定在(zai)長期性(xing)運(yun)行狀態下不可受液體浸蝕,能(neng)補(bu)漏(lou)。在(zai)提高層(ceng)(ceng)(ceng)(ceng)功效(xiao)下會承擔一定工(gong)作壓(ya)(ya)(ya)力。因而,宜選用(yong)丁腈橡(xiang)膠(jiao)(jiao),除塑膠(jiao)(jiao)粒外,危(wei)(wei)害性(xing)能(neng)的(de)關鍵(jian)要(yao)素也(ye)有(you)內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)的(de)強(qiang)(qiang)度、薄厚和永久(jiu)性(xing)形(xing)變量(liang)。強(qiang)(qiang)度和永久(jiu)性(xing)形(xing)變量(liang)對(dui)密封性(xing)性(xing)能(neng)危(wei)(wei)害非常大。一般強(qiang)(qiang)度高、縮小后的(de)永久(jiu)性(xing)形(xing)變量(liang)小,密封性(xing)性(xing)能(neng)則(ze)越好。一般是在(zai)70~85邵氏硬(ying)度,縮小永久(jiu)性(xing)形(xing)變50%時。內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)薄厚建議是為1.5~2.5mm,太厚會在(zai)壓(ya)(ya)(ya)扣(kou)時提升其流動率(lv),導致不必要(yao)的(de)膠(jiao)(jiao)在(zai)接頭芯套與(yu)橡(xiang)膠(jiao)(jiao)軟管(guan)的(de)觸(chu)碰(peng)內(nei)孔內(nei)沉積(ji),減少商(shang)品(pin)流通(tong)橫截(jie)面;過薄會在(zai)壓(ya)(ya)(ya)扣(kou)時被壓(ya)(ya)(ya)裂。另外內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)壁厚勻(yun)稱性(xing)也(ye)很(hen)重要(yao)。假如(ru)薄厚不勻(yun),縮小后會導致一面裂斷(duan)、一面堆膠(jiao)(jiao)。內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)(ceng)出現(xian)的(de)浮銹也(ye)是危(wei)(wei)害性(xing)能(neng)品(pin)質(zhi)的(de)關鍵(jian)要(yao)素。
2)高(gao)壓(ya)膠(jiao)(jiao)(jiao)管關鍵借助提高(gao)層來承受力。手(shou)工編織橡膠(jiao)(jiao)(jiao)軟管是(shi)(shi)靠膠(jiao)(jiao)(jiao)漿(jiang)與內外(wai)黏膠(jiao)(jiao)(jiao)粘(zhan)緊,因為同(tong)一(yi)手(shou)工編織層內不(bu)銹(xiu)鋼(gang)(gang)絲(si)中(zhong)(zhong)間的(de)互相(xiang)觸碰(peng),在承擔(dan)(dan)氣體(ti)壓(ya)力的(de)時候會因分別伸(shen)縮(suo)式不(bu)一(yi)而導致不(bu)銹(xiu)鋼(gang)(gang)絲(si)彼(bi)此(ci)之(zhi)間的(de)摩(mo)擦(ca)而危害其使用性能。而螺旋波(bo)紋(wen)管是(shi)(shi)由盤繞方位不(bu)一(yi)樣的(de)雙層產(chan)生一(yi)個工作中(zhong)(zhong)層,在雙層中(zhong)(zhong)間有正(zheng)中(zhong)(zhong)間膠(jiao)(jiao)(jiao),因而同(tong)一(yi)工作中(zhong)(zhong)層的(de)雙層不(bu)銹(xiu)鋼(gang)(gang)絲(si)中(zhong)(zhong)間沒有交接(jie)點。因此(ci) 不(bu)容易在承擔(dan)(dan)氣體(ti)壓(ya)力時同(tong)于不(bu)銹(xiu)鋼(gang)(gang)絲(si)間的(de)交叉式彎折而產(chan)生應力或磨(mo)擦(ca)磨(mo)壞。故使用性能好(hao),能承擔(dan)(dan)髙(gao)壓(ya)。
3)高(gao)壓(ya)膠(jiao)(jiao)管的(de)外膠(jiao)(jiao)層粘在提高(gao)層上起維護功(gong)效(xiao),一般選用氯丁膠(jiao)(jiao)。應留意避免 其脆化開裂而危害全部橡(xiang)膠(jiao)(jiao)軟管的(de)使用壽(shou)命。