高壓膠管接頭總成構(gou)造和性(xing)能的關(guan)聯

１、橡膠軟管總成

1）高壓(ya)膠(jiao)(jiao)(jiao)(jiao)(jiao)管由內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)、提高層(ceng)(ceng)(ceng)(ceng)和外(wai)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)構成（如(ru)圖例），內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)立即(ji)與(yu)液(ye)壓(ya)油觸碰(peng)，故規(gui)定在(zai)(zai)(zai)(zai)長期(qi)性(xing)運行(xing)狀(zhuang)態下(xia)不(bu)可受液(ye)體浸蝕，能補(bu)漏。在(zai)(zai)(zai)(zai)提高層(ceng)(ceng)(ceng)(ceng)功效(xiao)下(xia)會承擔一定工作壓(ya)力。因而，宜選用丁腈橡(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)，除塑膠(jiao)(jiao)(jiao)(jiao)(jiao)粒(li)外(wai)，危害(hai)性(xing)能的(de)(de)關(guan)(guan)鍵(jian)要(yao)素也有內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)的(de)(de)強度(du)(du)、薄(bo)厚(hou)和永(yong)久(jiu)性(xing)形變量(liang)。強度(du)(du)和永(yong)久(jiu)性(xing)形變量(liang)對密(mi)(mi)封性(xing)性(xing)能危害(hai)非常(chang)大。一般強度(du)(du)高、縮小(xiao)(xiao)后的(de)(de)永(yong)久(jiu)性(xing)形變量(liang)小(xiao)(xiao)，密(mi)(mi)封性(xing)性(xing)能則越好。一般是在(zai)(zai)(zai)(zai)７０～８５邵氏硬度(du)(du)，縮小(xiao)(xiao)永(yong)久(jiu)性(xing)形變５０％時(shi)。內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)薄(bo)厚(hou)建議是為１．５～２．５ｍｍ，太(tai)厚(hou)會在(zai)(zai)(zai)(zai)壓(ya)扣時(shi)提升其流動率，導致不(bu)必要(yao)的(de)(de)膠(jiao)(jiao)(jiao)(jiao)(jiao)在(zai)(zai)(zai)(zai)接頭芯套與(yu)橡(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)軟管的(de)(de)觸碰(peng)內(nei)(nei)(nei)孔內(nei)(nei)(nei)沉積，減少(shao)商品(pin)流通(tong)橫截面(mian)；過薄(bo)會在(zai)(zai)(zai)(zai)壓(ya)扣時(shi)被壓(ya)裂。另外(wai)內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)壁(bi)厚(hou)勻(yun)稱性(xing)也很重要(yao)。假如(ru)薄(bo)厚(hou)不(bu)勻(yun)，縮小(xiao)(xiao)后會導致一面(mian)裂斷、一面(mian)堆膠(jiao)(jiao)(jiao)(jiao)(jiao)。內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)(ceng)出現的(de)(de)浮銹也是危害(hai)性(xing)能品(pin)質的(de)(de)關(guan)(guan)鍵(jian)要(yao)素。

２）高壓(ya)膠管(guan)(guan)(guan)關鍵借助(zhu)提高層(ceng)(ceng)(ceng)來承(cheng)受(shou)力(li)。手(shou)工(gong)編織橡膠軟管(guan)(guan)(guan)是(shi)靠膠漿與內外(wai)黏膠粘緊，因(yin)為同一(yi)(yi)手(shou)工(gong)編織層(ceng)(ceng)(ceng)內不(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)絲(si)中(zhong)間(jian)(jian)(jian)的(de)(de)(de)(de)互(hu)相觸碰，在承(cheng)擔(dan)氣(qi)(qi)體(ti)壓(ya)力(li)的(de)(de)(de)(de)時候會因(yin)分別伸(shen)縮式不(bu)(bu)(bu)一(yi)(yi)而(er)導致不(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)絲(si)彼此之間(jian)(jian)(jian)的(de)(de)(de)(de)摩擦而(er)危害其使(shi)用(yong)性能(neng)。而(er)螺(luo)旋波紋管(guan)(guan)(guan)是(shi)由盤繞方位不(bu)(bu)(bu)一(yi)(yi)樣的(de)(de)(de)(de)雙層(ceng)(ceng)(ceng)產(chan)生一(yi)(yi)個工(gong)作中(zhong)層(ceng)(ceng)(ceng)，在雙層(ceng)(ceng)(ceng)中(zhong)間(jian)(jian)(jian)有正(zheng)中(zhong)間(jian)(jian)(jian)膠，因(yin)而(er)同一(yi)(yi)工(gong)作中(zhong)層(ceng)(ceng)(ceng)的(de)(de)(de)(de)雙層(ceng)(ceng)(ceng)不(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)絲(si)中(zhong)間(jian)(jian)(jian)沒有交接點。因(yin)此 不(bu)(bu)(bu)容(rong)易在承(cheng)擔(dan)氣(qi)(qi)體(ti)壓(ya)力(li)時同于不(bu)(bu)(bu)銹(xiu)鋼(gang)(gang)(gang)絲(si)間(jian)(jian)(jian)的(de)(de)(de)(de)交叉式彎(wan)折而(er)產(chan)生應力(li)或磨擦磨壞。故使(shi)用(yong)性能(neng)好，能(neng)承(cheng)擔(dan)髙壓(ya)。

３）高(gao)壓(ya)膠管的(de)外(wai)膠層(ceng)(ceng)粘(zhan)在提高(gao)層(ceng)(ceng)上起維護功(gong)效，一般選用氯(lv)丁膠。應留意(yi)避免 其脆(cui)化開(kai)裂而危害全部橡膠軟管的(de)使用壽命。