高壓膠管接頭總成(cheng)構造和性(xing)能的關(guan)聯(lian)

１、橡膠軟管總成

1）高壓(ya)膠(jiao)(jiao)管(guan)由內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)、提(ti)高層(ceng)(ceng)(ceng)(ceng)和外膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)構(gou)成（如圖例），內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)立即與(yu)液壓(ya)油觸碰，故(gu)規(gui)定在(zai)長期性(xing)(xing)運行(xing)狀態(tai)下不可受液體浸蝕，能(neng)補漏(lou)。在(zai)提(ti)高層(ceng)(ceng)(ceng)(ceng)功效(xiao)下會承擔一(yi)定工作壓(ya)力(li)。因而，宜選用丁腈橡膠(jiao)(jiao)，除塑膠(jiao)(jiao)粒外，危(wei)害(hai)(hai)性(xing)(xing)能(neng)的關(guan)鍵要(yao)素也有內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)的強(qiang)(qiang)度(du)、薄(bo)(bo)厚(hou)(hou)和永久性(xing)(xing)形(xing)變(bian)量。強(qiang)(qiang)度(du)和永久性(xing)(xing)形(xing)變(bian)量對密封(feng)(feng)性(xing)(xing)性(xing)(xing)能(neng)危(wei)害(hai)(hai)非常(chang)大。一(yi)般強(qiang)(qiang)度(du)高、縮小(xiao)后的永久性(xing)(xing)形(xing)變(bian)量小(xiao)，密封(feng)(feng)性(xing)(xing)性(xing)(xing)能(neng)則越好。一(yi)般是在(zai)７０～８５邵氏(shi)硬(ying)度(du)，縮小(xiao)永久性(xing)(xing)形(xing)變(bian)５０％時。內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)薄(bo)(bo)厚(hou)(hou)建議是為(wei)１．５～２．５ｍｍ，太厚(hou)(hou)會在(zai)壓(ya)扣時提(ti)升其(qi)流動率，導致不必要(yao)的膠(jiao)(jiao)在(zai)接頭芯套(tao)與(yu)橡膠(jiao)(jiao)軟管(guan)的觸碰內(nei)孔內(nei)沉積(ji)，減少商品(pin)流通橫(heng)截面(mian)；過薄(bo)(bo)會在(zai)壓(ya)扣時被壓(ya)裂(lie)。另外內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)壁厚(hou)(hou)勻(yun)稱性(xing)(xing)也很重要(yao)。假如薄(bo)(bo)厚(hou)(hou)不勻(yun)，縮小(xiao)后會導致一(yi)面(mian)裂(lie)斷、一(yi)面(mian)堆膠(jiao)(jiao)。內(nei)膠(jiao)(jiao)層(ceng)(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)(ceng)出現的浮銹也是危(wei)害(hai)(hai)性(xing)(xing)能(neng)品(pin)質的關(guan)鍵要(yao)素。

２）高(gao)(gao)壓(ya)(ya)膠(jiao)(jiao)管關鍵借助提高(gao)(gao)層(ceng)來承(cheng)受力。手工編織橡(xiang)膠(jiao)(jiao)軟管是靠膠(jiao)(jiao)漿(jiang)與內外黏膠(jiao)(jiao)粘(zhan)緊(jin)，因為同(tong)(tong)一(yi)手工編織層(ceng)內不(bu)銹(xiu)(xiu)鋼(gang)(gang)絲中(zhong)(zhong)間(jian)的互相觸碰，在(zai)承(cheng)擔(dan)氣體壓(ya)(ya)力的時候會因分(fen)別(bie)伸(shen)縮(suo)式(shi)不(bu)一(yi)而導(dao)致(zhi)不(bu)銹(xiu)(xiu)鋼(gang)(gang)絲彼(bi)此之間(jian)的摩擦(ca)而危害其(qi)使用(yong)性能(neng)。而螺(luo)旋波紋管是由盤繞方位不(bu)一(yi)樣的雙層(ceng)產生(sheng)一(yi)個工作(zuo)中(zhong)(zhong)層(ceng)，在(zai)雙層(ceng)中(zhong)(zhong)間(jian)有(you)正中(zhong)(zhong)間(jian)膠(jiao)(jiao)，因而同(tong)(tong)一(yi)工作(zuo)中(zhong)(zhong)層(ceng)的雙層(ceng)不(bu)銹(xiu)(xiu)鋼(gang)(gang)絲中(zhong)(zhong)間(jian)沒(mei)有(you)交接點。因此 不(bu)容易在(zai)承(cheng)擔(dan)氣體壓(ya)(ya)力時同(tong)(tong)于(yu)不(bu)銹(xiu)(xiu)鋼(gang)(gang)絲間(jian)的交叉(cha)式(shi)彎折而產生(sheng)應力或磨(mo)(mo)擦(ca)磨(mo)(mo)壞。故使用(yong)性能(neng)好(hao)，能(neng)承(cheng)擔(dan)髙壓(ya)(ya)。

３）高壓膠管的外膠層粘(zhan)在提高層上起(qi)維(wei)護功效，一般選用氯丁膠。應留意避免 其脆化開裂而危害全(quan)部橡膠軟管的使用壽(shou)命。