高壓膠管接頭總成構(gou)造和(he)性能的關聯(lian)

１、橡膠軟管總成

1）高(gao)壓(ya)膠(jiao)(jiao)管由內(nei)(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)、提高(gao)層(ceng)(ceng)(ceng)(ceng)和外(wai)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)構成（如圖例(li)），內(nei)(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)立即(ji)與液壓(ya)油觸(chu)碰，故規定在長(chang)期性(xing)(xing)運行(xing)狀態下不可受液體浸蝕，能(neng)補漏(lou)。在提高(gao)層(ceng)(ceng)(ceng)(ceng)功效下會承擔(dan)一定工作(zuo)壓(ya)力。因而，宜選(xuan)用丁腈(jing)橡(xiang)膠(jiao)(jiao)，除塑膠(jiao)(jiao)粒外(wai)，危害(hai)性(xing)(xing)能(neng)的關鍵要素也有(you)內(nei)(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)的強度(du)、薄厚(hou)和永久性(xing)(xing)形(xing)變量。強度(du)和永久性(xing)(xing)形(xing)變量對密(mi)封性(xing)(xing)性(xing)(xing)能(neng)危害(hai)非常大。一般強度(du)高(gao)、縮小后(hou)的永久性(xing)(xing)形(xing)變量小，密(mi)封性(xing)(xing)性(xing)(xing)能(neng)則越好。一般是(shi)在７０～８５邵氏(shi)硬度(du)，縮小永久性(xing)(xing)形(xing)變５０％時。內(nei)(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)薄厚(hou)建議(yi)是(shi)為１．５～２．５ｍｍ，太厚(hou)會在壓(ya)扣(kou)時提升其流(liu)動率，導致不必(bi)要的膠(jiao)(jiao)在接頭芯套(tao)與橡(xiang)膠(jiao)(jiao)軟(ruan)管的觸(chu)碰內(nei)(nei)(nei)(nei)孔(kong)內(nei)(nei)(nei)(nei)沉(chen)積，減少商品流(liu)通橫截面(mian)；過薄會在壓(ya)扣(kou)時被(bei)壓(ya)裂(lie)。另外(wai)內(nei)(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)壁(bi)厚(hou)勻稱性(xing)(xing)也很重(zhong)要。假如薄厚(hou)不勻，縮小后(hou)會導致一面(mian)裂(lie)斷、一面(mian)堆膠(jiao)(jiao)。內(nei)(nei)(nei)(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)表(biao)層(ceng)(ceng)(ceng)(ceng)出(chu)現的浮銹也是(shi)危害(hai)性(xing)(xing)能(neng)品質的關鍵要素。

２）高(gao)壓膠(jiao)管關鍵借(jie)助提高(gao)層(ceng)(ceng)(ceng)來承(cheng)受力(li)。手工(gong)(gong)編織橡膠(jiao)軟管是(shi)靠(kao)膠(jiao)漿與(yu)內(nei)(nei)外(wai)黏(nian)膠(jiao)粘緊，因(yin)為同一手工(gong)(gong)編織層(ceng)(ceng)(ceng)內(nei)(nei)不(bu)(bu)銹鋼(gang)絲(si)中(zhong)間(jian)(jian)的(de)互相觸碰，在承(cheng)擔氣體壓力(li)的(de)時(shi)(shi)候會因(yin)分別伸縮式不(bu)(bu)一而(er)導(dao)致不(bu)(bu)銹鋼(gang)絲(si)彼此(ci)之間(jian)(jian)的(de)摩擦而(er)危害(hai)其使(shi)用性能(neng)(neng)。而(er)螺(luo)旋波紋(wen)管是(shi)由盤繞方位不(bu)(bu)一樣的(de)雙(shuang)層(ceng)(ceng)(ceng)產(chan)生一個工(gong)(gong)作中(zhong)層(ceng)(ceng)(ceng)，在雙(shuang)層(ceng)(ceng)(ceng)中(zhong)間(jian)(jian)有正中(zhong)間(jian)(jian)膠(jiao)，因(yin)而(er)同一工(gong)(gong)作中(zhong)層(ceng)(ceng)(ceng)的(de)雙(shuang)層(ceng)(ceng)(ceng)不(bu)(bu)銹鋼(gang)絲(si)中(zhong)間(jian)(jian)沒有交接(jie)點。因(yin)此(ci) 不(bu)(bu)容易(yi)在承(cheng)擔氣體壓力(li)時(shi)(shi)同于不(bu)(bu)銹鋼(gang)絲(si)間(jian)(jian)的(de)交叉式彎折(zhe)而(er)產(chan)生應(ying)力(li)或磨(mo)擦磨(mo)壞。故(gu)使(shi)用性能(neng)(neng)好(hao)，能(neng)(neng)承(cheng)擔髙壓。

３）高壓膠管的外(wai)膠層粘在提高層上(shang)起(qi)維(wei)護(hu)功效，一般選(xuan)用氯丁膠。應留意(yi)避免(mian) 其脆(cui)化開裂而危害全部橡膠軟管的使用壽命。