1、橡膠軟管總成
1)高(gao)(gao)壓(ya)(ya)(ya)膠(jiao)(jiao)管(guan)(guan)由內(nei)膠(jiao)(jiao)層(ceng)(ceng)、提高(gao)(gao)層(ceng)(ceng)和外膠(jiao)(jiao)層(ceng)(ceng)構成(如圖例),內(nei)膠(jiao)(jiao)層(ceng)(ceng)立(li)即與液壓(ya)(ya)(ya)油觸碰,故規定(ding)在(zai)(zai)長(chang)期(qi)性(xing)(xing)運行狀態下不(bu)可受液體(ti)浸蝕(shi),能(neng)補漏。在(zai)(zai)提高(gao)(gao)層(ceng)(ceng)功效下會(hui)(hui)承擔一(yi)定(ding)工作(zuo)壓(ya)(ya)(ya)力(li)。因而,宜選(xuan)用丁腈橡膠(jiao)(jiao),除塑膠(jiao)(jiao)粒外,危(wei)害(hai)性(xing)(xing)能(neng)的(de)(de)關(guan)鍵要素也(ye)(ye)有內(nei)膠(jiao)(jiao)層(ceng)(ceng)的(de)(de)強(qiang)度(du)、薄(bo)(bo)厚和永(yong)久性(xing)(xing)形變(bian)量。強(qiang)度(du)和永(yong)久性(xing)(xing)形變(bian)量對密(mi)封性(xing)(xing)性(xing)(xing)能(neng)危(wei)害(hai)非(fei)常(chang)大。一(yi)般(ban)強(qiang)度(du)高(gao)(gao)、縮(suo)小(xiao)后(hou)(hou)的(de)(de)永(yong)久性(xing)(xing)形變(bian)量小(xiao),密(mi)封性(xing)(xing)性(xing)(xing)能(neng)則越好。一(yi)般(ban)是(shi)在(zai)(zai)70~85邵氏硬度(du),縮(suo)小(xiao)永(yong)久性(xing)(xing)形變(bian)50%時(shi)。內(nei)膠(jiao)(jiao)層(ceng)(ceng)薄(bo)(bo)厚建議(yi)是(shi)為(wei)1.5~2.5mm,太厚會(hui)(hui)在(zai)(zai)壓(ya)(ya)(ya)扣(kou)時(shi)提升其流動率,導致(zhi)不(bu)必要的(de)(de)膠(jiao)(jiao)在(zai)(zai)接頭芯套與橡膠(jiao)(jiao)軟管(guan)(guan)的(de)(de)觸碰內(nei)孔(kong)內(nei)沉積,減(jian)少商品流通橫截(jie)面;過薄(bo)(bo)會(hui)(hui)在(zai)(zai)壓(ya)(ya)(ya)扣(kou)時(shi)被壓(ya)(ya)(ya)裂。另外內(nei)膠(jiao)(jiao)層(ceng)(ceng)壁厚勻稱性(xing)(xing)也(ye)(ye)很(hen)重要。假如薄(bo)(bo)厚不(bu)勻,縮(suo)小(xiao)后(hou)(hou)會(hui)(hui)導致(zhi)一(yi)面裂斷、一(yi)面堆膠(jiao)(jiao)。內(nei)膠(jiao)(jiao)層(ceng)(ceng)表層(ceng)(ceng)出現(xian)的(de)(de)浮銹也(ye)(ye)是(shi)危(wei)害(hai)性(xing)(xing)能(neng)品質的(de)(de)關(guan)鍵要素。
2)高(gao)壓(ya)膠管關鍵(jian)借(jie)助提高(gao)層(ceng)來承(cheng)(cheng)(cheng)受力(li)。手工編織橡(xiang)膠軟管是靠膠漿與內(nei)外(wai)黏膠粘緊(jin),因(yin)為(wei)同(tong)一(yi)手工編織層(ceng)內(nei)不銹(xiu)鋼(gang)絲中間(jian)的(de)互相觸碰(peng),在(zai)承(cheng)(cheng)(cheng)擔氣(qi)體壓(ya)力(li)的(de)時候會因(yin)分別伸縮式不一(yi)而(er)(er)導致不銹(xiu)鋼(gang)絲彼此之間(jian)的(de)摩擦而(er)(er)危(wei)害其使用(yong)性(xing)能。而(er)(er)螺(luo)旋波紋(wen)管是由盤(pan)繞方(fang)位不一(yi)樣的(de)雙(shuang)層(ceng)產(chan)生一(yi)個工作中層(ceng),在(zai)雙(shuang)層(ceng)中間(jian)有正中間(jian)膠,因(yin)而(er)(er)同(tong)一(yi)工作中層(ceng)的(de)雙(shuang)層(ceng)不銹(xiu)鋼(gang)絲中間(jian)沒(mei)有交(jiao)接點。因(yin)此 不容易在(zai)承(cheng)(cheng)(cheng)擔氣(qi)體壓(ya)力(li)時同(tong)于不銹(xiu)鋼(gang)絲間(jian)的(de)交(jiao)叉式彎折而(er)(er)產(chan)生應力(li)或磨擦磨壞。故使用(yong)性(xing)能好,能承(cheng)(cheng)(cheng)擔髙壓(ya)。
3)高壓膠(jiao)管的外膠(jiao)層(ceng)粘在(zai)提高層(ceng)上起維護功(gong)效(xiao),一般選用(yong)氯丁(ding)膠(jiao)。應留意避免 其(qi)脆化(hua)開裂而(er)危害全(quan)部橡(xiang)膠(jiao)軟管的使用(yong)壽命。