1、橡膠軟管總成
1)高(gao)壓膠(jiao)管(guan)由內(nei)膠(jiao)層(ceng)、提高(gao)層(ceng)和(he)外膠(jiao)層(ceng)構成(如(ru)圖例(li)),內(nei)膠(jiao)層(ceng)立即與(yu)液壓油觸碰(peng)(peng),故規定(ding)在(zai)長(chang)期性(xing)(xing)(xing)運行狀態下不(bu)可受液體浸蝕,能補(bu)漏。在(zai)提高(gao)層(ceng)功效(xiao)下會(hui)承擔一定(ding)工(gong)作壓力。因而,宜選(xuan)用丁(ding)腈(jing)橡膠(jiao),除塑(su)膠(jiao)粒外,危(wei)害(hai)性(xing)(xing)(xing)能的(de)(de)關鍵要(yao)素也(ye)有(you)內(nei)膠(jiao)層(ceng)的(de)(de)強度(du)、薄(bo)厚和(he)永久(jiu)性(xing)(xing)(xing)形變量。強度(du)和(he)永久(jiu)性(xing)(xing)(xing)形變量對密(mi)封性(xing)(xing)(xing)性(xing)(xing)(xing)能危(wei)害(hai)非常大。一般強度(du)高(gao)、縮(suo)小(xiao)后的(de)(de)永久(jiu)性(xing)(xing)(xing)形變量小(xiao),密(mi)封性(xing)(xing)(xing)性(xing)(xing)(xing)能則越好。一般是(shi)(shi)在(zai)70~85邵氏硬(ying)度(du),縮(suo)小(xiao)永久(jiu)性(xing)(xing)(xing)形變50%時。內(nei)膠(jiao)層(ceng)薄(bo)厚建議是(shi)(shi)為1.5~2.5mm,太厚會(hui)在(zai)壓扣時提升其流動率(lv),導(dao)致(zhi)不(bu)必要(yao)的(de)(de)膠(jiao)在(zai)接頭芯套與(yu)橡膠(jiao)軟管(guan)的(de)(de)觸碰(peng)(peng)內(nei)孔內(nei)沉積,減少商(shang)品(pin)(pin)流通橫截面(mian);過薄(bo)會(hui)在(zai)壓扣時被(bei)壓裂。另外內(nei)膠(jiao)層(ceng)壁厚勻(yun)稱性(xing)(xing)(xing)也(ye)很重要(yao)。假如(ru)薄(bo)厚不(bu)勻(yun),縮(suo)小(xiao)后會(hui)導(dao)致(zhi)一面(mian)裂斷、一面(mian)堆膠(jiao)。內(nei)膠(jiao)層(ceng)表(biao)層(ceng)出(chu)現的(de)(de)浮銹也(ye)是(shi)(shi)危(wei)害(hai)性(xing)(xing)(xing)能品(pin)(pin)質的(de)(de)關鍵要(yao)素。
2)高(gao)壓膠(jiao)(jiao)(jiao)管(guan)關(guan)鍵借助提高(gao)層(ceng)(ceng)來(lai)承受力。手工(gong)(gong)編(bian)織(zhi)橡(xiang)膠(jiao)(jiao)(jiao)軟管(guan)是靠膠(jiao)(jiao)(jiao)漿與(yu)內(nei)外黏膠(jiao)(jiao)(jiao)粘(zhan)緊,因(yin)為同一(yi)手工(gong)(gong)編(bian)織(zhi)層(ceng)(ceng)內(nei)不(bu)銹(xiu)(xiu)鋼(gang)絲(si)(si)中(zhong)間(jian)(jian)的互相(xiang)觸碰,在承擔(dan)氣體壓力的時(shi)候會因(yin)分別伸縮(suo)式不(bu)一(yi)而(er)導致(zhi)不(bu)銹(xiu)(xiu)鋼(gang)絲(si)(si)彼此之間(jian)(jian)的摩擦而(er)危害其使用性(xing)能(neng)。而(er)螺旋波紋管(guan)是由盤(pan)繞方位不(bu)一(yi)樣的雙(shuang)層(ceng)(ceng)產生一(yi)個工(gong)(gong)作(zuo)中(zhong)層(ceng)(ceng),在雙(shuang)層(ceng)(ceng)中(zhong)間(jian)(jian)有(you)正中(zhong)間(jian)(jian)膠(jiao)(jiao)(jiao),因(yin)而(er)同一(yi)工(gong)(gong)作(zuo)中(zhong)層(ceng)(ceng)的雙(shuang)層(ceng)(ceng)不(bu)銹(xiu)(xiu)鋼(gang)絲(si)(si)中(zhong)間(jian)(jian)沒(mei)有(you)交接點。因(yin)此 不(bu)容(rong)易在承擔(dan)氣體壓力時(shi)同于不(bu)銹(xiu)(xiu)鋼(gang)絲(si)(si)間(jian)(jian)的交叉(cha)式彎折而(er)產生應力或(huo)磨擦磨壞。故使用性(xing)能(neng)好,能(neng)承擔(dan)髙(gao)壓。
3)高壓膠管的外膠層粘在提高層上起維護功效,一般選(xuan)用氯丁膠。應留(liu)意避(bi)免 其脆化(hua)開裂而危害全部橡膠軟管的使用壽(shou)命。