1、橡膠軟管總成
1)高壓膠(jiao)(jiao)管由(you)內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)、提(ti)高層(ceng)(ceng)(ceng)(ceng)(ceng)和(he)外膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)構成(如圖例(li)),內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)立即與液(ye)壓油觸(chu)碰(peng),故(gu)規定在(zai)長期性(xing)(xing)運行狀態下不可受液(ye)體浸蝕(shi),能補(bu)漏。在(zai)提(ti)高層(ceng)(ceng)(ceng)(ceng)(ceng)功(gong)效下會承擔一(yi)定工作壓力。因(yin)而(er),宜(yi)選用(yong)丁(ding)腈橡(xiang)膠(jiao)(jiao),除塑膠(jiao)(jiao)粒外,危害性(xing)(xing)能的(de)(de)關鍵要(yao)素也有(you)內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)的(de)(de)強度(du)(du)、薄厚(hou)和(he)永久性(xing)(xing)形變(bian)量(liang)(liang)。強度(du)(du)和(he)永久性(xing)(xing)形變(bian)量(liang)(liang)對密封(feng)性(xing)(xing)性(xing)(xing)能危害非常大。一(yi)般(ban)強度(du)(du)高、縮小(xiao)(xiao)后的(de)(de)永久性(xing)(xing)形變(bian)量(liang)(liang)小(xiao)(xiao),密封(feng)性(xing)(xing)性(xing)(xing)能則越好。一(yi)般(ban)是(shi)在(zai)70~85邵氏硬度(du)(du),縮小(xiao)(xiao)永久性(xing)(xing)形變(bian)50%時。內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)薄厚(hou)建(jian)議是(shi)為1.5~2.5mm,太厚(hou)會在(zai)壓扣時提(ti)升其(qi)流動率,導(dao)致不必要(yao)的(de)(de)膠(jiao)(jiao)在(zai)接頭芯套與橡(xiang)膠(jiao)(jiao)軟管的(de)(de)觸(chu)碰(peng)內(nei)(nei)孔內(nei)(nei)沉積(ji),減少(shao)商品流通橫截面;過薄會在(zai)壓扣時被壓裂。另外內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)壁(bi)厚(hou)勻稱(cheng)性(xing)(xing)也很重要(yao)。假如薄厚(hou)不勻,縮小(xiao)(xiao)后會導(dao)致一(yi)面裂斷、一(yi)面堆膠(jiao)(jiao)。內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)(ceng)表(biao)層(ceng)(ceng)(ceng)(ceng)(ceng)出現(xian)的(de)(de)浮銹也是(shi)危害性(xing)(xing)能品質的(de)(de)關鍵要(yao)素。
2)高壓膠管關鍵借助提高層(ceng)來承(cheng)(cheng)(cheng)受力。手(shou)工(gong)編(bian)織(zhi)橡膠軟管是靠膠漿與內(nei)外黏(nian)膠粘(zhan)緊,因為同(tong)一手(shou)工(gong)編(bian)織(zhi)層(ceng)內(nei)不銹鋼(gang)絲(si)(si)中間(jian)的(de)(de)(de)互相觸碰,在承(cheng)(cheng)(cheng)擔氣體(ti)壓力的(de)(de)(de)時候會(hui)因分別伸(shen)縮式不一而(er)(er)(er)(er)導(dao)致不銹鋼(gang)絲(si)(si)彼此(ci)之間(jian)的(de)(de)(de)摩擦而(er)(er)(er)(er)危害其使(shi)用(yong)性能。而(er)(er)(er)(er)螺旋波紋管是由盤繞方位(wei)不一樣(yang)的(de)(de)(de)雙層(ceng)產生(sheng)一個(ge)工(gong)作(zuo)中層(ceng),在雙層(ceng)中間(jian)有正中間(jian)膠,因而(er)(er)(er)(er)同(tong)一工(gong)作(zuo)中層(ceng)的(de)(de)(de)雙層(ceng)不銹鋼(gang)絲(si)(si)中間(jian)沒(mei)有交接(jie)點。因此(ci) 不容易在承(cheng)(cheng)(cheng)擔氣體(ti)壓力時同(tong)于(yu)不銹鋼(gang)絲(si)(si)間(jian)的(de)(de)(de)交叉(cha)式彎折而(er)(er)(er)(er)產生(sheng)應力或(huo)磨擦磨壞。故使(shi)用(yong)性能好,能承(cheng)(cheng)(cheng)擔髙壓。
3)高壓膠管的(de)(de)外膠層(ceng)粘在提高層(ceng)上起維護(hu)功效,一般選用氯丁膠。應(ying)留意避(bi)免(mian) 其(qi)脆化(hua)開裂而危(wei)害全部橡膠軟管的(de)(de)使用壽命。