1、橡膠軟管總成
1)高(gao)壓膠(jiao)管由內(nei)膠(jiao)層(ceng)(ceng)(ceng)(ceng)、提高(gao)層(ceng)(ceng)(ceng)(ceng)和外(wai)膠(jiao)層(ceng)(ceng)(ceng)(ceng)構成(如(ru)圖例),內(nei)膠(jiao)層(ceng)(ceng)(ceng)(ceng)立即與(yu)液(ye)壓油觸碰,故規(gui)定在長期性(xing)(xing)運(yun)行狀態下(xia)不(bu)可受液(ye)體(ti)浸蝕,能(neng)補(bu)漏。在提高(gao)層(ceng)(ceng)(ceng)(ceng)功效下(xia)會承擔一(yi)定工作(zuo)壓力。因而,宜選用(yong)丁(ding)腈橡(xiang)膠(jiao),除塑(su)膠(jiao)粒外(wai),危害(hai)性(xing)(xing)能(neng)的(de)(de)(de)關鍵(jian)要素(su)也有內(nei)膠(jiao)層(ceng)(ceng)(ceng)(ceng)的(de)(de)(de)強度(du)、薄厚(hou)和永(yong)久性(xing)(xing)形變(bian)量。強度(du)和永(yong)久性(xing)(xing)形變(bian)量對密封(feng)性(xing)(xing)性(xing)(xing)能(neng)危害(hai)非常大。一(yi)般強度(du)高(gao)、縮小(xiao)(xiao)后(hou)的(de)(de)(de)永(yong)久性(xing)(xing)形變(bian)量小(xiao)(xiao),密封(feng)性(xing)(xing)性(xing)(xing)能(neng)則越好。一(yi)般是在70~85邵氏硬度(du),縮小(xiao)(xiao)永(yong)久性(xing)(xing)形變(bian)50%時(shi)。內(nei)膠(jiao)層(ceng)(ceng)(ceng)(ceng)薄厚(hou)建議是為1.5~2.5mm,太厚(hou)會在壓扣時(shi)提升其流動率,導致不(bu)必要的(de)(de)(de)膠(jiao)在接頭芯(xin)套與(yu)橡(xiang)膠(jiao)軟(ruan)管的(de)(de)(de)觸碰內(nei)孔內(nei)沉積(ji),減少商品流通(tong)橫截(jie)面;過薄會在壓扣時(shi)被(bei)壓裂。另(ling)外(wai)內(nei)膠(jiao)層(ceng)(ceng)(ceng)(ceng)壁厚(hou)勻稱性(xing)(xing)也很重要。假如(ru)薄厚(hou)不(bu)勻,縮小(xiao)(xiao)后(hou)會導致一(yi)面裂斷、一(yi)面堆膠(jiao)。內(nei)膠(jiao)層(ceng)(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)(ceng)出現(xian)的(de)(de)(de)浮銹(xiu)也是危害(hai)性(xing)(xing)能(neng)品質的(de)(de)(de)關鍵(jian)要素(su)。
2)高(gao)壓(ya)膠(jiao)管關鍵借助提高(gao)層(ceng)(ceng)來承受力。手(shou)工編(bian)織(zhi)橡(xiang)膠(jiao)軟管是(shi)(shi)靠膠(jiao)漿(jiang)與內外黏膠(jiao)粘緊,因(yin)為同一(yi)(yi)手(shou)工編(bian)織(zhi)層(ceng)(ceng)內不銹鋼(gang)絲中(zhong)(zhong)間(jian)的互相觸碰(peng),在承擔氣體(ti)壓(ya)力的時候會因(yin)分別伸(shen)縮式(shi)不一(yi)(yi)而(er)(er)(er)導致不銹鋼(gang)絲彼(bi)此之間(jian)的摩(mo)擦而(er)(er)(er)危害(hai)其使用(yong)性(xing)能。而(er)(er)(er)螺旋波(bo)紋管是(shi)(shi)由盤繞方(fang)位不一(yi)(yi)樣的雙(shuang)層(ceng)(ceng)產生(sheng)一(yi)(yi)個工作中(zhong)(zhong)層(ceng)(ceng),在雙(shuang)層(ceng)(ceng)中(zhong)(zhong)間(jian)有正中(zhong)(zhong)間(jian)膠(jiao),因(yin)而(er)(er)(er)同一(yi)(yi)工作中(zhong)(zhong)層(ceng)(ceng)的雙(shuang)層(ceng)(ceng)不銹鋼(gang)絲中(zhong)(zhong)間(jian)沒有交(jiao)接點。因(yin)此 不容(rong)易在承擔氣體(ti)壓(ya)力時同于不銹鋼(gang)絲間(jian)的交(jiao)叉式(shi)彎折而(er)(er)(er)產生(sheng)應力或磨(mo)擦磨(mo)壞。故(gu)使用(yong)性(xing)能好,能承擔髙(gao)壓(ya)。
3)高壓(ya)膠(jiao)(jiao)管(guan)的外(wai)膠(jiao)(jiao)層(ceng)粘在提高層(ceng)上起維(wei)護(hu)功效,一般(ban)選用(yong)氯丁(ding)膠(jiao)(jiao)。應留意避免(mian) 其脆(cui)化開裂而(er)危害全部(bu)橡膠(jiao)(jiao)軟管(guan)的使用(yong)壽(shou)命。