高壓膠管接頭總(zong)成構造和(he)性能(neng)的關聯

１、橡膠軟管總成

1）高(gao)(gao)壓(ya)(ya)(ya)膠(jiao)(jiao)管(guan)由(you)內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)、提高(gao)(gao)層(ceng)(ceng)(ceng)和(he)外膠(jiao)(jiao)層(ceng)(ceng)(ceng)構成（如圖(tu)例），內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)立即與液(ye)壓(ya)(ya)(ya)油觸碰(peng)，故(gu)規定(ding)在(zai)長期(qi)性(xing)(xing)(xing)(xing)運行狀態下(xia)(xia)不可受液(ye)體(ti)浸蝕，能(neng)補漏。在(zai)提高(gao)(gao)層(ceng)(ceng)(ceng)功(gong)效下(xia)(xia)會(hui)承擔一(yi)定(ding)工作(zuo)壓(ya)(ya)(ya)力。因而，宜選用丁(ding)腈(jing)橡膠(jiao)(jiao)，除(chu)塑膠(jiao)(jiao)粒外，危害(hai)性(xing)(xing)(xing)(xing)能(neng)的(de)關鍵(jian)要(yao)素也(ye)有(you)內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)的(de)強度(du)(du)、薄(bo)厚(hou)(hou)(hou)和(he)永(yong)久性(xing)(xing)(xing)(xing)形(xing)變量(liang)。強度(du)(du)和(he)永(yong)久性(xing)(xing)(xing)(xing)形(xing)變量(liang)對密封(feng)性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)危害(hai)非常大。一(yi)般(ban)強度(du)(du)高(gao)(gao)、縮(suo)小(xiao)后(hou)的(de)永(yong)久性(xing)(xing)(xing)(xing)形(xing)變量(liang)小(xiao)，密封(feng)性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)則越好。一(yi)般(ban)是(shi)在(zai)７０～８５邵氏硬度(du)(du)，縮(suo)小(xiao)永(yong)久性(xing)(xing)(xing)(xing)形(xing)變５０％時(shi)。內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)薄(bo)厚(hou)(hou)(hou)建議是(shi)為１．５～２．５ｍｍ，太(tai)厚(hou)(hou)(hou)會(hui)在(zai)壓(ya)(ya)(ya)扣時(shi)提升其(qi)流(liu)(liu)動率，導(dao)致(zhi)(zhi)不必要(yao)的(de)膠(jiao)(jiao)在(zai)接頭(tou)芯套與橡膠(jiao)(jiao)軟管(guan)的(de)觸碰(peng)內(nei)(nei)孔內(nei)(nei)沉積，減少商品流(liu)(liu)通橫(heng)截面；過薄(bo)會(hui)在(zai)壓(ya)(ya)(ya)扣時(shi)被壓(ya)(ya)(ya)裂。另外內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)壁厚(hou)(hou)(hou)勻稱(cheng)性(xing)(xing)(xing)(xing)也(ye)很重要(yao)。假(jia)如薄(bo)厚(hou)(hou)(hou)不勻，縮(suo)小(xiao)后(hou)會(hui)導(dao)致(zhi)(zhi)一(yi)面裂斷、一(yi)面堆膠(jiao)(jiao)。內(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)出(chu)現的(de)浮銹也(ye)是(shi)危害(hai)性(xing)(xing)(xing)(xing)能(neng)品質的(de)關鍵(jian)要(yao)素。

２）高壓(ya)(ya)膠(jiao)(jiao)(jiao)管關(guan)鍵借助(zhu)提高層(ceng)(ceng)來(lai)承(cheng)受力(li)。手工(gong)(gong)編織橡膠(jiao)(jiao)(jiao)軟管是靠(kao)膠(jiao)(jiao)(jiao)漿與內外黏膠(jiao)(jiao)(jiao)粘緊，因為(wei)同一(yi)(yi)手工(gong)(gong)編織層(ceng)(ceng)內不(bu)(bu)銹(xiu)鋼絲(si)中(zhong)間(jian)(jian)的(de)(de)互相觸碰，在承(cheng)擔(dan)(dan)(dan)氣(qi)體壓(ya)(ya)力(li)的(de)(de)時候會因分別(bie)伸(shen)縮式(shi)不(bu)(bu)一(yi)(yi)而(er)導致不(bu)(bu)銹(xiu)鋼絲(si)彼此之間(jian)(jian)的(de)(de)摩擦(ca)而(er)危害其使用(yong)性能(neng)。而(er)螺旋波紋管是由盤(pan)繞方位不(bu)(bu)一(yi)(yi)樣的(de)(de)雙層(ceng)(ceng)產(chan)生(sheng)一(yi)(yi)個(ge)工(gong)(gong)作中(zhong)層(ceng)(ceng)，在雙層(ceng)(ceng)中(zhong)間(jian)(jian)有(you)正中(zhong)間(jian)(jian)膠(jiao)(jiao)(jiao)，因而(er)同一(yi)(yi)工(gong)(gong)作中(zhong)層(ceng)(ceng)的(de)(de)雙層(ceng)(ceng)不(bu)(bu)銹(xiu)鋼絲(si)中(zhong)間(jian)(jian)沒有(you)交接(jie)點。因此 不(bu)(bu)容易(yi)在承(cheng)擔(dan)(dan)(dan)氣(qi)體壓(ya)(ya)力(li)時同于不(bu)(bu)銹(xiu)鋼絲(si)間(jian)(jian)的(de)(de)交叉式(shi)彎(wan)折而(er)產(chan)生(sheng)應力(li)或磨擦(ca)磨壞。故使用(yong)性能(neng)好(hao)，能(neng)承(cheng)擔(dan)(dan)(dan)髙壓(ya)(ya)。

３）高(gao)(gao)壓(ya)膠管的外膠層(ceng)粘在提高(gao)(gao)層(ceng)上(shang)起(qi)維護功(gong)效，一般選用氯丁膠。應留意避免 其脆化開裂(lie)而危(wei)害全部橡(xiang)膠軟管的使用壽命。