1、橡膠軟管總成
1)高壓膠(jiao)管由內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)、提高層(ceng)(ceng)和(he)外膠(jiao)層(ceng)(ceng)構成(如(ru)圖例),內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)立(li)即(ji)與(yu)液壓油觸碰,故(gu)規定(ding)(ding)在(zai)長期性(xing)(xing)(xing)運行狀態下不可受液體浸蝕,能(neng)補漏。在(zai)提高層(ceng)(ceng)功效下會(hui)承(cheng)擔一定(ding)(ding)工作壓力。因而,宜選用丁腈(jing)橡(xiang)膠(jiao),除塑膠(jiao)粒外,危(wei)害性(xing)(xing)(xing)能(neng)的(de)(de)關鍵(jian)要素(su)(su)也有內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)的(de)(de)強(qiang)度(du)(du)、薄厚(hou)(hou)和(he)永(yong)(yong)久(jiu)性(xing)(xing)(xing)形變(bian)量。強(qiang)度(du)(du)和(he)永(yong)(yong)久(jiu)性(xing)(xing)(xing)形變(bian)量對密封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)危(wei)害非常(chang)大。一般強(qiang)度(du)(du)高、縮(suo)小(xiao)(xiao)后(hou)的(de)(de)永(yong)(yong)久(jiu)性(xing)(xing)(xing)形變(bian)量小(xiao)(xiao),密封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)則越(yue)好。一般是(shi)(shi)在(zai)70~85邵(shao)氏硬(ying)度(du)(du),縮(suo)小(xiao)(xiao)永(yong)(yong)久(jiu)性(xing)(xing)(xing)形變(bian)50%時(shi)。內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)薄厚(hou)(hou)建(jian)議是(shi)(shi)為1.5~2.5mm,太厚(hou)(hou)會(hui)在(zai)壓扣時(shi)提升其(qi)流動率,導(dao)致(zhi)不必(bi)要的(de)(de)膠(jiao)在(zai)接頭芯套與(yu)橡(xiang)膠(jiao)軟管的(de)(de)觸碰內(nei)(nei)(nei)孔內(nei)(nei)(nei)沉(chen)積(ji),減少商(shang)品流通橫截面(mian)(mian);過薄會(hui)在(zai)壓扣時(shi)被壓裂(lie)。另外內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)壁厚(hou)(hou)勻稱(cheng)性(xing)(xing)(xing)也很重要。假如(ru)薄厚(hou)(hou)不勻,縮(suo)小(xiao)(xiao)后(hou)會(hui)導(dao)致(zhi)一面(mian)(mian)裂(lie)斷(duan)、一面(mian)(mian)堆膠(jiao)。內(nei)(nei)(nei)膠(jiao)層(ceng)(ceng)表層(ceng)(ceng)出現的(de)(de)浮銹也是(shi)(shi)危(wei)害性(xing)(xing)(xing)能(neng)品質的(de)(de)關鍵(jian)要素(su)(su)。
2)高壓(ya)膠(jiao)(jiao)管關鍵借助(zhu)提高層來承(cheng)受力(li)。手工(gong)編織橡膠(jiao)(jiao)軟管是靠膠(jiao)(jiao)漿(jiang)與內(nei)外黏膠(jiao)(jiao)粘緊,因為(wei)同(tong)一手工(gong)編織層內(nei)不(bu)銹(xiu)鋼絲(si)中間(jian)(jian)(jian)的(de)互相觸碰,在(zai)承(cheng)擔(dan)(dan)氣體壓(ya)力(li)的(de)時候(hou)會因分別伸縮式(shi)不(bu)一而導致不(bu)銹(xiu)鋼絲(si)彼(bi)此(ci)之間(jian)(jian)(jian)的(de)摩擦而危(wei)害其使用(yong)性(xing)(xing)能(neng)。而螺旋(xuan)波紋管是由盤繞方位不(bu)一樣的(de)雙層產(chan)生一個工(gong)作中層,在(zai)雙層中間(jian)(jian)(jian)有(you)正(zheng)中間(jian)(jian)(jian)膠(jiao)(jiao),因而同(tong)一工(gong)作中層的(de)雙層不(bu)銹(xiu)鋼絲(si)中間(jian)(jian)(jian)沒有(you)交接點(dian)。因此(ci) 不(bu)容易在(zai)承(cheng)擔(dan)(dan)氣體壓(ya)力(li)時同(tong)于不(bu)銹(xiu)鋼絲(si)間(jian)(jian)(jian)的(de)交叉(cha)式(shi)彎折(zhe)而產(chan)生應力(li)或磨擦磨壞(huai)。故使用(yong)性(xing)(xing)能(neng)好,能(neng)承(cheng)擔(dan)(dan)髙壓(ya)。
3)高壓(ya)膠(jiao)(jiao)管(guan)的外膠(jiao)(jiao)層(ceng)粘在提高層(ceng)上起維護功效,一般選用氯丁膠(jiao)(jiao)。應(ying)留意避免 其脆化開裂而危害全部橡(xiang)膠(jiao)(jiao)軟管(guan)的使用壽命。