1、橡膠軟管總成
1)高(gao)壓(ya)膠(jiao)(jiao)管由內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)、提高(gao)層(ceng)(ceng)(ceng)和外(wai)(wai)膠(jiao)(jiao)層(ceng)(ceng)(ceng)構成(如圖例),內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)立即與(yu)液壓(ya)油觸碰(peng),故規定在(zai)長期性(xing)(xing)運行狀態(tai)下不可受液體浸蝕,能(neng)(neng)補(bu)漏。在(zai)提高(gao)層(ceng)(ceng)(ceng)功效下會承(cheng)擔(dan)一(yi)定工作(zuo)壓(ya)力。因而,宜(yi)選(xuan)用丁腈(jing)橡膠(jiao)(jiao),除(chu)塑膠(jiao)(jiao)粒外(wai)(wai),危(wei)害(hai)性(xing)(xing)能(neng)(neng)的(de)關鍵要(yao)(yao)素也有內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)的(de)強度(du)、薄(bo)(bo)厚(hou)和永(yong)久性(xing)(xing)形(xing)變(bian)(bian)量(liang)。強度(du)和永(yong)久性(xing)(xing)形(xing)變(bian)(bian)量(liang)對密(mi)封性(xing)(xing)性(xing)(xing)能(neng)(neng)危(wei)害(hai)非常大(da)。一(yi)般強度(du)高(gao)、縮(suo)小后的(de)永(yong)久性(xing)(xing)形(xing)變(bian)(bian)量(liang)小,密(mi)封性(xing)(xing)性(xing)(xing)能(neng)(neng)則(ze)越(yue)好。一(yi)般是(shi)在(zai)70~85邵氏硬(ying)度(du),縮(suo)小永(yong)久性(xing)(xing)形(xing)變(bian)(bian)50%時。內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)薄(bo)(bo)厚(hou)建議是(shi)為1.5~2.5mm,太厚(hou)會在(zai)壓(ya)扣時提升其流動率,導致不必要(yao)(yao)的(de)膠(jiao)(jiao)在(zai)接頭芯套(tao)與(yu)橡膠(jiao)(jiao)軟管的(de)觸碰(peng)內(nei)(nei)(nei)孔(kong)內(nei)(nei)(nei)沉(chen)積,減(jian)少商品(pin)流通橫截面(mian)(mian);過(guo)薄(bo)(bo)會在(zai)壓(ya)扣時被(bei)壓(ya)裂(lie)。另外(wai)(wai)內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)壁厚(hou)勻稱性(xing)(xing)也很重要(yao)(yao)。假(jia)如薄(bo)(bo)厚(hou)不勻,縮(suo)小后會導致一(yi)面(mian)(mian)裂(lie)斷(duan)、一(yi)面(mian)(mian)堆膠(jiao)(jiao)。內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)出(chu)現的(de)浮銹也是(shi)危(wei)害(hai)性(xing)(xing)能(neng)(neng)品(pin)質的(de)關鍵要(yao)(yao)素。
2)高壓膠(jiao)管(guan)(guan)關鍵借助(zhu)提高層來承(cheng)(cheng)(cheng)受力(li)。手工編織橡膠(jiao)軟管(guan)(guan)是靠膠(jiao)漿(jiang)與內外黏(nian)膠(jiao)粘緊,因(yin)(yin)(yin)為同一手工編織層內不(bu)(bu)銹(xiu)鋼(gang)絲(si)(si)中(zhong)(zhong)(zhong)間(jian)的(de)(de)互相觸碰,在(zai)承(cheng)(cheng)(cheng)擔氣(qi)體壓力(li)的(de)(de)時候(hou)會(hui)因(yin)(yin)(yin)分別伸縮式(shi)不(bu)(bu)一而(er)導致不(bu)(bu)銹(xiu)鋼(gang)絲(si)(si)彼此之間(jian)的(de)(de)摩擦(ca)而(er)危害其使用性能。而(er)螺旋波紋管(guan)(guan)是由盤繞方(fang)位不(bu)(bu)一樣的(de)(de)雙(shuang)層產生(sheng)一個工作中(zhong)(zhong)(zhong)層,在(zai)雙(shuang)層中(zhong)(zhong)(zhong)間(jian)有正中(zhong)(zhong)(zhong)間(jian)膠(jiao),因(yin)(yin)(yin)而(er)同一工作中(zhong)(zhong)(zhong)層的(de)(de)雙(shuang)層不(bu)(bu)銹(xiu)鋼(gang)絲(si)(si)中(zhong)(zhong)(zhong)間(jian)沒有交(jiao)接(jie)點。因(yin)(yin)(yin)此 不(bu)(bu)容易在(zai)承(cheng)(cheng)(cheng)擔氣(qi)體壓力(li)時同于不(bu)(bu)銹(xiu)鋼(gang)絲(si)(si)間(jian)的(de)(de)交(jiao)叉式(shi)彎折(zhe)而(er)產生(sheng)應力(li)或(huo)磨擦(ca)磨壞。故使用性能好,能承(cheng)(cheng)(cheng)擔髙壓。
3)高壓膠(jiao)管的(de)外膠(jiao)層粘在提高層上起維護功效,一般選用氯(lv)丁膠(jiao)。應留意避免 其脆化開(kai)裂而危害全部橡(xiang)膠(jiao)軟管的(de)使用壽命。