高壓膠管接頭總(zong)成(cheng)構造和性能(neng)的關(guan)聯

１、橡膠軟管總成

1）高(gao)壓膠(jiao)(jiao)管由(you)內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)、提(ti)高(gao)層(ceng)(ceng)(ceng)和外(wai)膠(jiao)(jiao)層(ceng)(ceng)(ceng)構成（如(ru)圖(tu)例），內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)立即(ji)與液壓油觸碰，故規定在(zai)長期(qi)性(xing)(xing)(xing)運行狀態下不(bu)可受液體浸蝕(shi)，能(neng)補(bu)漏。在(zai)提(ti)高(gao)層(ceng)(ceng)(ceng)功效下會(hui)承擔一定工作壓力(li)。因(yin)而(er)，宜選用(yong)丁腈橡膠(jiao)(jiao)，除塑(su)膠(jiao)(jiao)粒外(wai)，危(wei)害(hai)性(xing)(xing)(xing)能(neng)的(de)(de)關鍵(jian)(jian)要(yao)素也有內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)的(de)(de)強度、薄(bo)厚(hou)和永(yong)久(jiu)性(xing)(xing)(xing)形(xing)變(bian)量(liang)(liang)。強度和永(yong)久(jiu)性(xing)(xing)(xing)形(xing)變(bian)量(liang)(liang)對密封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)危(wei)害(hai)非常(chang)大(da)。一般強度高(gao)、縮小(xiao)后的(de)(de)永(yong)久(jiu)性(xing)(xing)(xing)形(xing)變(bian)量(liang)(liang)小(xiao)，密封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)則越好。一般是在(zai)７０～８５邵(shao)氏硬度，縮小(xiao)永(yong)久(jiu)性(xing)(xing)(xing)形(xing)變(bian)５０％時(shi)。內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)薄(bo)厚(hou)建議是為１．５～２．５ｍｍ，太厚(hou)會(hui)在(zai)壓扣時(shi)提(ti)升其流動率(lv)，導致(zhi)不(bu)必(bi)要(yao)的(de)(de)膠(jiao)(jiao)在(zai)接頭芯套(tao)與橡膠(jiao)(jiao)軟管的(de)(de)觸碰內(nei)(nei)(nei)孔內(nei)(nei)(nei)沉積，減(jian)少商品流通橫截面；過薄(bo)會(hui)在(zai)壓扣時(shi)被壓裂。另外(wai)內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)壁厚(hou)勻稱性(xing)(xing)(xing)也很重要(yao)。假如(ru)薄(bo)厚(hou)不(bu)勻，縮小(xiao)后會(hui)導致(zhi)一面裂斷、一面堆(dui)膠(jiao)(jiao)。內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)表(biao)層(ceng)(ceng)(ceng)出現(xian)的(de)(de)浮銹也是危(wei)害(hai)性(xing)(xing)(xing)能(neng)品質(zhi)的(de)(de)關鍵(jian)(jian)要(yao)素。

２）高(gao)(gao)壓(ya)膠(jiao)(jiao)管關鍵借助提(ti)高(gao)(gao)層來承受力(li)。手(shou)工(gong)編織橡(xiang)膠(jiao)(jiao)軟管是(shi)靠(kao)膠(jiao)(jiao)漿與內外黏膠(jiao)(jiao)粘緊，因(yin)為同(tong)(tong)一(yi)(yi)手(shou)工(gong)編織層內不(bu)(bu)銹(xiu)鋼絲中(zhong)(zhong)間(jian)的互相觸(chu)碰(peng)，在承擔氣體壓(ya)力(li)的時(shi)候會因(yin)分別伸縮式(shi)不(bu)(bu)一(yi)(yi)而(er)導致(zhi)不(bu)(bu)銹(xiu)鋼絲彼(bi)此之間(jian)的摩擦(ca)而(er)危(wei)害其使用性能(neng)。而(er)螺旋(xuan)波紋(wen)管是(shi)由盤繞方(fang)位不(bu)(bu)一(yi)(yi)樣的雙(shuang)層產生一(yi)(yi)個工(gong)作(zuo)中(zhong)(zhong)層，在雙(shuang)層中(zhong)(zhong)間(jian)有正中(zhong)(zhong)間(jian)膠(jiao)(jiao)，因(yin)而(er)同(tong)(tong)一(yi)(yi)工(gong)作(zuo)中(zhong)(zhong)層的雙(shuang)層不(bu)(bu)銹(xiu)鋼絲中(zhong)(zhong)間(jian)沒有交接點。因(yin)此 不(bu)(bu)容易在承擔氣體壓(ya)力(li)時(shi)同(tong)(tong)于不(bu)(bu)銹(xiu)鋼絲間(jian)的交叉式(shi)彎折而(er)產生應力(li)或磨擦(ca)磨壞(huai)。故使用性能(neng)好，能(neng)承擔髙壓(ya)。

３）高壓膠(jiao)管的(de)外(wai)膠(jiao)層粘在(zai)提高層上起維護功效，一般選用氯(lv)丁膠(jiao)。應(ying)留意避免(mian) 其脆化開(kai)裂(lie)而危害全(quan)部橡膠(jiao)軟管的(de)使用壽(shou)命。