高壓膠管接頭總成(cheng)構(gou)造和性能的關聯(lian)

１、橡膠軟管總成

1）高壓(ya)膠管(guan)由內(nei)(nei)膠層(ceng)(ceng)(ceng)(ceng)、提(ti)高層(ceng)(ceng)(ceng)(ceng)和外(wai)膠層(ceng)(ceng)(ceng)(ceng)構成(cheng)（如(ru)圖例），內(nei)(nei)膠層(ceng)(ceng)(ceng)(ceng)立即與液壓(ya)油觸(chu)碰，故規定在長期性(xing)(xing)(xing)(xing)運行狀態下不(bu)可(ke)受液體浸蝕，能補漏。在提(ti)高層(ceng)(ceng)(ceng)(ceng)功效下會(hui)承(cheng)擔(dan)一(yi)定工作壓(ya)力。因(yin)而，宜選用(yong)丁(ding)腈橡(xiang)膠，除塑膠粒外(wai)，危(wei)害(hai)(hai)性(xing)(xing)(xing)(xing)能的(de)關鍵(jian)(jian)要(yao)(yao)素也(ye)有內(nei)(nei)膠層(ceng)(ceng)(ceng)(ceng)的(de)強(qiang)度、薄(bo)厚(hou)(hou)和永久(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)(xing)變(bian)量(liang)。強(qiang)度和永久(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)(xing)變(bian)量(liang)對密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能危(wei)害(hai)(hai)非常大(da)。一(yi)般強(qiang)度高、縮小后(hou)的(de)永久(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)(xing)變(bian)量(liang)小，密封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能則越好。一(yi)般是在７０～８５邵氏硬度，縮小永久(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)(xing)變(bian)５０％時。內(nei)(nei)膠層(ceng)(ceng)(ceng)(ceng)薄(bo)厚(hou)(hou)建議是為１．５～２．５ｍｍ，太厚(hou)(hou)會(hui)在壓(ya)扣時提(ti)升其流(liu)動率，導致(zhi)不(bu)必要(yao)(yao)的(de)膠在接頭芯套與橡(xiang)膠軟管(guan)的(de)觸(chu)碰內(nei)(nei)孔內(nei)(nei)沉(chen)積，減少商品(pin)(pin)流(liu)通(tong)橫截面(mian)(mian)；過薄(bo)會(hui)在壓(ya)扣時被壓(ya)裂(lie)。另外(wai)內(nei)(nei)膠層(ceng)(ceng)(ceng)(ceng)壁厚(hou)(hou)勻稱性(xing)(xing)(xing)(xing)也(ye)很重要(yao)(yao)。假(jia)如(ru)薄(bo)厚(hou)(hou)不(bu)勻，縮小后(hou)會(hui)導致(zhi)一(yi)面(mian)(mian)裂(lie)斷、一(yi)面(mian)(mian)堆(dui)膠。內(nei)(nei)膠層(ceng)(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)(ceng)出現的(de)浮(fu)銹也(ye)是危(wei)害(hai)(hai)性(xing)(xing)(xing)(xing)能品(pin)(pin)質的(de)關鍵(jian)(jian)要(yao)(yao)素。

２）高(gao)壓(ya)膠(jiao)管關鍵借(jie)助提高(gao)層(ceng)來承(cheng)(cheng)(cheng)受力(li)。手工編織橡膠(jiao)軟管是(shi)靠膠(jiao)漿與內外黏(nian)膠(jiao)粘緊(jin)，因(yin)為同一(yi)(yi)手工編織層(ceng)內不(bu)銹鋼絲中(zhong)(zhong)間(jian)(jian)(jian)的互相觸碰(peng)，在(zai)承(cheng)(cheng)(cheng)擔(dan)氣體壓(ya)力(li)的時(shi)候會因(yin)分別伸縮(suo)式(shi)不(bu)一(yi)(yi)而導致不(bu)銹鋼絲彼此之間(jian)(jian)(jian)的摩(mo)擦而危害其(qi)使(shi)用性(xing)能(neng)。而螺旋波紋管是(shi)由盤繞方(fang)位(wei)不(bu)一(yi)(yi)樣的雙層(ceng)產生(sheng)一(yi)(yi)個工作(zuo)中(zhong)(zhong)層(ceng)，在(zai)雙層(ceng)中(zhong)(zhong)間(jian)(jian)(jian)有正中(zhong)(zhong)間(jian)(jian)(jian)膠(jiao)，因(yin)而同一(yi)(yi)工作(zuo)中(zhong)(zhong)層(ceng)的雙層(ceng)不(bu)銹鋼絲中(zhong)(zhong)間(jian)(jian)(jian)沒有交接點。因(yin)此 不(bu)容易在(zai)承(cheng)(cheng)(cheng)擔(dan)氣體壓(ya)力(li)時(shi)同于不(bu)銹鋼絲間(jian)(jian)(jian)的交叉(cha)式(shi)彎折而產生(sheng)應力(li)或磨擦磨壞。故使(shi)用性(xing)能(neng)好，能(neng)承(cheng)(cheng)(cheng)擔(dan)髙壓(ya)。

３）高(gao)壓膠(jiao)管(guan)的外膠(jiao)層粘在提高(gao)層上(shang)起維護功(gong)效，一般選用氯丁膠(jiao)。應(ying)留(liu)意(yi)避免 其脆化開裂而危害全部橡膠(jiao)軟管(guan)的使(shi)用壽命。