高壓膠管接頭總成構(gou)造和性(xing)能的(de)關聯

１、橡膠軟管總成

1）高(gao)壓(ya)(ya)膠(jiao)(jiao)(jiao)管由(you)內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)、提(ti)高(gao)層(ceng)(ceng)(ceng)和(he)外膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)構(gou)成(cheng)（如圖例），內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)立(li)即與液壓(ya)(ya)油觸(chu)碰，故規定(ding)在長期性(xing)(xing)(xing)(xing)運(yun)行狀態下不可(ke)受(shou)液體(ti)浸(jin)蝕，能(neng)補漏(lou)。在提(ti)高(gao)層(ceng)(ceng)(ceng)功效下會(hui)(hui)承擔一定(ding)工作(zuo)壓(ya)(ya)力。因而，宜(yi)選用丁腈橡膠(jiao)(jiao)(jiao)，除塑(su)膠(jiao)(jiao)(jiao)粒外，危(wei)害性(xing)(xing)(xing)(xing)能(neng)的關鍵要(yao)素也(ye)有內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)的強度(du)(du)、薄(bo)厚(hou)(hou)(hou)和(he)永(yong)久(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)變量。強度(du)(du)和(he)永(yong)久(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)變量對密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)危(wei)害非常大。一般強度(du)(du)高(gao)、縮小(xiao)(xiao)(xiao)后的永(yong)久(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)變量小(xiao)(xiao)(xiao)，密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)則越好。一般是在７０～８５邵氏硬度(du)(du)，縮小(xiao)(xiao)(xiao)永(yong)久(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)變５０％時(shi)。內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)薄(bo)厚(hou)(hou)(hou)建議是為１．５～２．５ｍｍ，太(tai)厚(hou)(hou)(hou)會(hui)(hui)在壓(ya)(ya)扣時(shi)提(ti)升其流(liu)動率，導致(zhi)不必(bi)要(yao)的膠(jiao)(jiao)(jiao)在接頭(tou)芯(xin)套與橡膠(jiao)(jiao)(jiao)軟管的觸(chu)碰內孔內沉積，減少(shao)商品(pin)流(liu)通橫截(jie)面(mian)；過薄(bo)會(hui)(hui)在壓(ya)(ya)扣時(shi)被壓(ya)(ya)裂。另外內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)壁厚(hou)(hou)(hou)勻稱性(xing)(xing)(xing)(xing)也(ye)很重要(yao)。假(jia)如薄(bo)厚(hou)(hou)(hou)不勻，縮小(xiao)(xiao)(xiao)后會(hui)(hui)導致(zhi)一面(mian)裂斷、一面(mian)堆膠(jiao)(jiao)(jiao)。內膠(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)出現的浮銹也(ye)是危(wei)害性(xing)(xing)(xing)(xing)能(neng)品(pin)質的關鍵要(yao)素。

２）高壓(ya)膠(jiao)管關鍵(jian)借助(zhu)提高層(ceng)(ceng)(ceng)(ceng)來承受力。手(shou)工編織(zhi)(zhi)橡膠(jiao)軟管是靠(kao)膠(jiao)漿與內(nei)外黏膠(jiao)粘(zhan)緊，因為同一(yi)手(shou)工編織(zhi)(zhi)層(ceng)(ceng)(ceng)(ceng)內(nei)不(bu)銹(xiu)(xiu)鋼(gang)絲(si)中(zhong)間(jian)的互相觸碰(peng)，在(zai)承擔氣(qi)體壓(ya)力的時候會因分別伸縮式不(bu)一(yi)而導致不(bu)銹(xiu)(xiu)鋼(gang)絲(si)彼此(ci)之(zhi)間(jian)的摩擦而危(wei)害其使用(yong)性(xing)能。而螺旋(xuan)波紋管是由盤繞方位不(bu)一(yi)樣(yang)的雙層(ceng)(ceng)(ceng)(ceng)產生(sheng)一(yi)個工作(zuo)(zuo)中(zhong)層(ceng)(ceng)(ceng)(ceng)，在(zai)雙層(ceng)(ceng)(ceng)(ceng)中(zhong)間(jian)有(you)正中(zhong)間(jian)膠(jiao)，因而同一(yi)工作(zuo)(zuo)中(zhong)層(ceng)(ceng)(ceng)(ceng)的雙層(ceng)(ceng)(ceng)(ceng)不(bu)銹(xiu)(xiu)鋼(gang)絲(si)中(zhong)間(jian)沒有(you)交(jiao)接點。因此(ci) 不(bu)容易在(zai)承擔氣(qi)體壓(ya)力時同于不(bu)銹(xiu)(xiu)鋼(gang)絲(si)間(jian)的交(jiao)叉(cha)式彎(wan)折(zhe)而產生(sheng)應力或磨擦磨壞。故使用(yong)性(xing)能好，能承擔髙壓(ya)。

３）高壓(ya)膠(jiao)(jiao)管的(de)外膠(jiao)(jiao)層(ceng)粘(zhan)在提高層(ceng)上起維護功效，一般選用氯丁膠(jiao)(jiao)。應(ying)留意(yi)避(bi)免 其脆化開裂而危(wei)害全部橡膠(jiao)(jiao)軟管的(de)使用壽命(ming)。