高壓膠管接頭總(zong)成(cheng)構造和性能的(de)關聯

１、橡膠軟管總成

1）高(gao)壓(ya)(ya)膠(jiao)(jiao)(jiao)(jiao)(jiao)管由內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)、提(ti)高(gao)層(ceng)(ceng)和(he)(he)外膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)構(gou)成（如圖例(li)），內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)立即與液壓(ya)(ya)油觸(chu)碰(peng)，故規定在長期性(xing)(xing)(xing)(xing)運行狀態下不可受液體浸蝕，能(neng)(neng)補漏。在提(ti)高(gao)層(ceng)(ceng)功效下會(hui)承擔一(yi)定工作壓(ya)(ya)力。因而，宜選(xuan)用丁腈橡膠(jiao)(jiao)(jiao)(jiao)(jiao)，除塑膠(jiao)(jiao)(jiao)(jiao)(jiao)粒外，危(wei)害(hai)性(xing)(xing)(xing)(xing)能(neng)(neng)的(de)(de)關(guan)鍵要(yao)素也有內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)的(de)(de)強(qiang)度、薄(bo)厚(hou)(hou)和(he)(he)永久(jiu)(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)變(bian)量(liang)。強(qiang)度和(he)(he)永久(jiu)(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)變(bian)量(liang)對密(mi)封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)(neng)危(wei)害(hai)非常大。一(yi)般(ban)強(qiang)度高(gao)、縮小(xiao)后的(de)(de)永久(jiu)(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)變(bian)量(liang)小(xiao)，密(mi)封性(xing)(xing)(xing)(xing)性(xing)(xing)(xing)(xing)能(neng)(neng)則(ze)越好。一(yi)般(ban)是在７０～８５邵氏硬度，縮小(xiao)永久(jiu)(jiu)(jiu)性(xing)(xing)(xing)(xing)形(xing)變(bian)５０％時。內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)薄(bo)厚(hou)(hou)建議是為１．５～２．５ｍｍ，太厚(hou)(hou)會(hui)在壓(ya)(ya)扣時提(ti)升其流動率，導(dao)致(zhi)不必要(yao)的(de)(de)膠(jiao)(jiao)(jiao)(jiao)(jiao)在接頭芯套與橡膠(jiao)(jiao)(jiao)(jiao)(jiao)軟管的(de)(de)觸(chu)碰(peng)內(nei)(nei)孔內(nei)(nei)沉積，減少商品(pin)流通橫截面；過(guo)薄(bo)會(hui)在壓(ya)(ya)扣時被壓(ya)(ya)裂(lie)。另(ling)外內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)壁厚(hou)(hou)勻稱性(xing)(xing)(xing)(xing)也很(hen)重要(yao)。假如薄(bo)厚(hou)(hou)不勻，縮小(xiao)后會(hui)導(dao)致(zhi)一(yi)面裂(lie)斷、一(yi)面堆(dui)膠(jiao)(jiao)(jiao)(jiao)(jiao)。內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)表層(ceng)(ceng)出現的(de)(de)浮銹也是危(wei)害(hai)性(xing)(xing)(xing)(xing)能(neng)(neng)品(pin)質的(de)(de)關(guan)鍵要(yao)素。

２）高(gao)壓膠(jiao)管(guan)關鍵借助提(ti)高(gao)層(ceng)(ceng)來(lai)承(cheng)受力。手工(gong)編織(zhi)橡膠(jiao)軟管(guan)是(shi)靠膠(jiao)漿與(yu)內(nei)外黏膠(jiao)粘緊，因(yin)為同一(yi)(yi)(yi)手工(gong)編織(zhi)層(ceng)(ceng)內(nei)不(bu)銹(xiu)鋼(gang)(gang)絲中(zhong)間(jian)(jian)的(de)(de)互相觸(chu)碰，在(zai)承(cheng)擔氣體壓力的(de)(de)時(shi)候會因(yin)分別伸縮式(shi)不(bu)一(yi)(yi)(yi)而(er)導致(zhi)不(bu)銹(xiu)鋼(gang)(gang)絲彼此之間(jian)(jian)的(de)(de)摩(mo)擦而(er)危害其使用(yong)性(xing)能。而(er)螺旋波紋(wen)管(guan)是(shi)由盤(pan)繞方位不(bu)一(yi)(yi)(yi)樣的(de)(de)雙(shuang)層(ceng)(ceng)產(chan)生(sheng)一(yi)(yi)(yi)個工(gong)作中(zhong)層(ceng)(ceng)，在(zai)雙(shuang)層(ceng)(ceng)中(zhong)間(jian)(jian)有正中(zhong)間(jian)(jian)膠(jiao)，因(yin)而(er)同一(yi)(yi)(yi)工(gong)作中(zhong)層(ceng)(ceng)的(de)(de)雙(shuang)層(ceng)(ceng)不(bu)銹(xiu)鋼(gang)(gang)絲中(zhong)間(jian)(jian)沒有交(jiao)接點。因(yin)此 不(bu)容易在(zai)承(cheng)擔氣體壓力時(shi)同于(yu)不(bu)銹(xiu)鋼(gang)(gang)絲間(jian)(jian)的(de)(de)交(jiao)叉式(shi)彎折而(er)產(chan)生(sheng)應力或磨擦磨壞。故使用(yong)性(xing)能好，能承(cheng)擔髙壓。

３）高壓(ya)膠管的(de)外膠層粘(zhan)在(zai)提高層上起維護功效，一般選用氯丁膠。應留意避免(mian) 其脆化開裂而危害全部橡膠軟管的(de)使用壽命。