1、橡膠軟管總成
1)高(gao)壓(ya)膠(jiao)管由(you)內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)(ceng)、提(ti)高(gao)層(ceng)(ceng)(ceng)(ceng)和外膠(jiao)層(ceng)(ceng)(ceng)(ceng)構成(cheng)(如圖(tu)例),內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)(ceng)立即與液(ye)壓(ya)油觸碰(peng),故規定在長期性(xing)(xing)(xing)運行狀態下(xia)不可受(shou)液(ye)體浸(jin)蝕,能(neng)(neng)補漏。在提(ti)高(gao)層(ceng)(ceng)(ceng)(ceng)功效下(xia)會承擔一定工作(zuo)壓(ya)力。因而,宜選用丁腈(jing)橡(xiang)膠(jiao),除塑膠(jiao)粒外,危害性(xing)(xing)(xing)能(neng)(neng)的(de)(de)關鍵要(yao)素也有內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)(ceng)的(de)(de)強(qiang)(qiang)度(du)、薄厚(hou)(hou)和永久性(xing)(xing)(xing)形(xing)變(bian)(bian)(bian)量(liang)。強(qiang)(qiang)度(du)和永久性(xing)(xing)(xing)形(xing)變(bian)(bian)(bian)量(liang)對密封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)(neng)危害非(fei)常大。一般強(qiang)(qiang)度(du)高(gao)、縮小后的(de)(de)永久性(xing)(xing)(xing)形(xing)變(bian)(bian)(bian)量(liang)小,密封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)(neng)則(ze)越好。一般是在70~85邵氏硬(ying)度(du),縮小永久性(xing)(xing)(xing)形(xing)變(bian)(bian)(bian)50%時。內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)(ceng)薄厚(hou)(hou)建議是為1.5~2.5mm,太厚(hou)(hou)會在壓(ya)扣(kou)時提(ti)升其流動率,導致(zhi)不必要(yao)的(de)(de)膠(jiao)在接頭芯(xin)套與橡(xiang)膠(jiao)軟管的(de)(de)觸碰(peng)內(nei)(nei)(nei)孔(kong)內(nei)(nei)(nei)沉(chen)積,減少商品(pin)流通橫截面(mian);過(guo)薄會在壓(ya)扣(kou)時被(bei)壓(ya)裂。另外內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)(ceng)壁厚(hou)(hou)勻(yun)稱(cheng)性(xing)(xing)(xing)也很重要(yao)。假如薄厚(hou)(hou)不勻(yun),縮小后會導致(zhi)一面(mian)裂斷、一面(mian)堆膠(jiao)。內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)(ceng)(ceng)表(biao)層(ceng)(ceng)(ceng)(ceng)出現的(de)(de)浮(fu)銹也是危害性(xing)(xing)(xing)能(neng)(neng)品(pin)質的(de)(de)關鍵要(yao)素。
2)高壓膠(jiao)(jiao)管關鍵(jian)借助提(ti)高層(ceng)來承(cheng)受力。手工(gong)編(bian)織橡膠(jiao)(jiao)軟管是(shi)(shi)靠膠(jiao)(jiao)漿與(yu)內外黏膠(jiao)(jiao)粘緊,因為同(tong)一(yi)手工(gong)編(bian)織層(ceng)內不(bu)(bu)銹(xiu)(xiu)鋼(gang)絲中間(jian)(jian)的(de)互相觸碰,在承(cheng)擔氣體壓力的(de)時候會因分別(bie)伸縮式(shi)不(bu)(bu)一(yi)而導致不(bu)(bu)銹(xiu)(xiu)鋼(gang)絲彼此之間(jian)(jian)的(de)摩擦而危害其使用性(xing)能。而螺旋(xuan)波(bo)紋管是(shi)(shi)由盤繞方(fang)位不(bu)(bu)一(yi)樣(yang)的(de)雙(shuang)(shuang)層(ceng)產(chan)生一(yi)個工(gong)作(zuo)中層(ceng),在雙(shuang)(shuang)層(ceng)中間(jian)(jian)有正中間(jian)(jian)膠(jiao)(jiao),因而同(tong)一(yi)工(gong)作(zuo)中層(ceng)的(de)雙(shuang)(shuang)層(ceng)不(bu)(bu)銹(xiu)(xiu)鋼(gang)絲中間(jian)(jian)沒有交(jiao)接點。因此 不(bu)(bu)容易在承(cheng)擔氣體壓力時同(tong)于不(bu)(bu)銹(xiu)(xiu)鋼(gang)絲間(jian)(jian)的(de)交(jiao)叉式(shi)彎折而產(chan)生應(ying)力或磨擦磨壞。故使用性(xing)能好,能承(cheng)擔髙壓。
3)高壓膠(jiao)管的外膠(jiao)層粘(zhan)在提高層上起維護(hu)功效,一般選用氯丁膠(jiao)。應留意避免 其脆(cui)化開裂(lie)而(er)危害全部橡膠(jiao)軟管的使用壽命。