高壓膠管接頭總成構造(zao)和性能(neng)的(de)關聯

１、橡膠軟管總成

1）高(gao)壓(ya)(ya)膠(jiao)(jiao)管由內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)、提(ti)高(gao)層(ceng)(ceng)(ceng)和(he)外膠(jiao)(jiao)層(ceng)(ceng)(ceng)構(gou)成（如圖例），內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)立即與液(ye)壓(ya)(ya)油觸(chu)碰，故規定(ding)(ding)在長(chang)期性(xing)運行狀態下(xia)不(bu)可受液(ye)體浸蝕(shi)，能(neng)(neng)補漏。在提(ti)高(gao)層(ceng)(ceng)(ceng)功效下(xia)會承(cheng)擔一定(ding)(ding)工(gong)作壓(ya)(ya)力。因而，宜(yi)選(xuan)用丁腈橡膠(jiao)(jiao)，除塑膠(jiao)(jiao)粒外，危(wei)害性(xing)能(neng)(neng)的(de)關鍵(jian)要素也有內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)的(de)強度(du)、薄(bo)厚(hou)(hou)和(he)永(yong)久性(xing)形(xing)變(bian)量(liang)。強度(du)和(he)永(yong)久性(xing)形(xing)變(bian)量(liang)對密(mi)封性(xing)性(xing)能(neng)(neng)危(wei)害非常大。一般強度(du)高(gao)、縮小(xiao)后的(de)永(yong)久性(xing)形(xing)變(bian)量(liang)小(xiao)，密(mi)封性(xing)性(xing)能(neng)(neng)則越好。一般是(shi)在７０～８５邵氏硬度(du)，縮小(xiao)永(yong)久性(xing)形(xing)變(bian)５０％時(shi)(shi)。內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)薄(bo)厚(hou)(hou)建議是(shi)為１．５～２．５ｍｍ，太厚(hou)(hou)會在壓(ya)(ya)扣(kou)(kou)時(shi)(shi)提(ti)升其流動率，導(dao)(dao)致(zhi)不(bu)必要的(de)膠(jiao)(jiao)在接頭芯套(tao)與橡膠(jiao)(jiao)軟管的(de)觸(chu)碰內(nei)(nei)(nei)孔內(nei)(nei)(nei)沉積，減少商品(pin)(pin)流通橫截(jie)面；過薄(bo)會在壓(ya)(ya)扣(kou)(kou)時(shi)(shi)被(bei)壓(ya)(ya)裂(lie)。另外內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)壁厚(hou)(hou)勻稱性(xing)也很(hen)重要。假如薄(bo)厚(hou)(hou)不(bu)勻，縮小(xiao)后會導(dao)(dao)致(zhi)一面裂(lie)斷、一面堆膠(jiao)(jiao)。內(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)表(biao)層(ceng)(ceng)(ceng)出現的(de)浮銹也是(shi)危(wei)害性(xing)能(neng)(neng)品(pin)(pin)質的(de)關鍵(jian)要素。

２）高(gao)(gao)壓膠(jiao)管關鍵借助提(ti)高(gao)(gao)層(ceng)(ceng)(ceng)來承受力(li)。手工(gong)(gong)(gong)編織(zhi)橡膠(jiao)軟管是(shi)靠膠(jiao)漿與內外黏膠(jiao)粘緊(jin)，因為(wei)同(tong)(tong)一手工(gong)(gong)(gong)編織(zhi)層(ceng)(ceng)(ceng)內不銹鋼(gang)(gang)絲(si)中(zhong)間(jian)的互(hu)相觸碰，在(zai)承擔(dan)氣(qi)體壓力(li)的時(shi)候會(hui)因分(fen)別伸縮式不一而(er)導致(zhi)不銹鋼(gang)(gang)絲(si)彼此(ci)之間(jian)的摩(mo)擦而(er)危(wei)害其使(shi)用(yong)性能。而(er)螺旋波(bo)紋管是(shi)由盤繞(rao)方位不一樣(yang)的雙(shuang)(shuang)層(ceng)(ceng)(ceng)產生一個工(gong)(gong)(gong)作(zuo)中(zhong)層(ceng)(ceng)(ceng)，在(zai)雙(shuang)(shuang)層(ceng)(ceng)(ceng)中(zhong)間(jian)有(you)正中(zhong)間(jian)膠(jiao)，因而(er)同(tong)(tong)一工(gong)(gong)(gong)作(zuo)中(zhong)層(ceng)(ceng)(ceng)的雙(shuang)(shuang)層(ceng)(ceng)(ceng)不銹鋼(gang)(gang)絲(si)中(zhong)間(jian)沒有(you)交接(jie)點(dian)。因此(ci) 不容易在(zai)承擔(dan)氣(qi)體壓力(li)時(shi)同(tong)(tong)于不銹鋼(gang)(gang)絲(si)間(jian)的交叉(cha)式彎(wan)折(zhe)而(er)產生應(ying)力(li)或磨擦磨壞。故使(shi)用(yong)性能好(hao)，能承擔(dan)髙壓。

３）高壓膠管的外(wai)膠層粘(zhan)在(zai)提高層上起維(wei)護功效，一般選用氯丁膠。應留意(yi)避免 其脆(cui)化(hua)開裂(lie)而危害全部橡膠軟管的使用壽命。