1、橡膠軟管總成
1)高壓(ya)(ya)膠(jiao)(jiao)(jiao)(jiao)管(guan)(guan)由內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)、提(ti)(ti)高層(ceng)和(he)外膠(jiao)(jiao)(jiao)(jiao)層(ceng)構(gou)成(如(ru)圖例),內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)立即與液壓(ya)(ya)油觸碰,故規定在(zai)長期性(xing)(xing)運行狀(zhuang)態(tai)下(xia)不可受液體(ti)浸蝕,能補漏。在(zai)提(ti)(ti)高層(ceng)功效下(xia)會(hui)承(cheng)擔(dan)一(yi)定工作壓(ya)(ya)力。因而,宜選用丁腈橡(xiang)膠(jiao)(jiao)(jiao)(jiao),除塑膠(jiao)(jiao)(jiao)(jiao)粒(li)外,危(wei)(wei)害(hai)性(xing)(xing)能的(de)(de)關鍵(jian)要(yao)素(su)也有(you)內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)的(de)(de)強度(du)、薄厚和(he)永久(jiu)(jiu)(jiu)性(xing)(xing)形(xing)變量(liang)。強度(du)和(he)永久(jiu)(jiu)(jiu)性(xing)(xing)形(xing)變量(liang)對密封(feng)性(xing)(xing)性(xing)(xing)能危(wei)(wei)害(hai)非常(chang)大。一(yi)般強度(du)高、縮小(xiao)(xiao)后的(de)(de)永久(jiu)(jiu)(jiu)性(xing)(xing)形(xing)變量(liang)小(xiao)(xiao),密封(feng)性(xing)(xing)性(xing)(xing)能則越好。一(yi)般是在(zai)70~85邵氏硬度(du),縮小(xiao)(xiao)永久(jiu)(jiu)(jiu)性(xing)(xing)形(xing)變50%時(shi)。內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)薄厚建(jian)議是為1.5~2.5mm,太厚會(hui)在(zai)壓(ya)(ya)扣時(shi)提(ti)(ti)升其流(liu)動率,導致(zhi)不必要(yao)的(de)(de)膠(jiao)(jiao)(jiao)(jiao)在(zai)接頭芯套(tao)與橡(xiang)膠(jiao)(jiao)(jiao)(jiao)軟管(guan)(guan)的(de)(de)觸碰內(nei)(nei)(nei)孔內(nei)(nei)(nei)沉積,減少商品(pin)流(liu)通(tong)橫截面(mian)(mian);過(guo)薄會(hui)在(zai)壓(ya)(ya)扣時(shi)被(bei)壓(ya)(ya)裂。另外內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)壁厚勻稱性(xing)(xing)也很重(zhong)要(yao)。假如(ru)薄厚不勻,縮小(xiao)(xiao)后會(hui)導致(zhi)一(yi)面(mian)(mian)裂斷、一(yi)面(mian)(mian)堆膠(jiao)(jiao)(jiao)(jiao)。內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)表層(ceng)出現的(de)(de)浮銹也是危(wei)(wei)害(hai)性(xing)(xing)能品(pin)質的(de)(de)關鍵(jian)要(yao)素(su)。
2)高壓膠管(guan)關鍵借助提(ti)高層來承(cheng)(cheng)受力(li)。手工編織(zhi)橡膠軟管(guan)是(shi)靠(kao)膠漿(jiang)與(yu)內外黏膠粘緊,因(yin)(yin)為同一手工編織(zhi)層內不(bu)(bu)(bu)(bu)銹(xiu)(xiu)鋼(gang)絲(si)(si)中(zhong)(zhong)間(jian)(jian)的(de)互(hu)相觸碰(peng),在(zai)承(cheng)(cheng)擔氣體壓力(li)的(de)時(shi)候會因(yin)(yin)分別(bie)伸(shen)縮式(shi)不(bu)(bu)(bu)(bu)一而導致不(bu)(bu)(bu)(bu)銹(xiu)(xiu)鋼(gang)絲(si)(si)彼此(ci)(ci)之間(jian)(jian)的(de)摩擦而危害其使用性能。而螺旋(xuan)波(bo)紋(wen)管(guan)是(shi)由盤繞(rao)方位(wei)不(bu)(bu)(bu)(bu)一樣的(de)雙層產(chan)(chan)生一個工作(zuo)中(zhong)(zhong)層,在(zai)雙層中(zhong)(zhong)間(jian)(jian)有(you)正中(zhong)(zhong)間(jian)(jian)膠,因(yin)(yin)而同一工作(zuo)中(zhong)(zhong)層的(de)雙層不(bu)(bu)(bu)(bu)銹(xiu)(xiu)鋼(gang)絲(si)(si)中(zhong)(zhong)間(jian)(jian)沒有(you)交(jiao)接點。因(yin)(yin)此(ci)(ci) 不(bu)(bu)(bu)(bu)容易在(zai)承(cheng)(cheng)擔氣體壓力(li)時(shi)同于不(bu)(bu)(bu)(bu)銹(xiu)(xiu)鋼(gang)絲(si)(si)間(jian)(jian)的(de)交(jiao)叉式(shi)彎折(zhe)而產(chan)(chan)生應力(li)或磨擦磨壞。故使用性能好,能承(cheng)(cheng)擔髙壓。
3)高壓膠管的(de)外膠層粘在提高層上起維護功效,一般選用氯丁膠。應留意避免 其脆化開裂而(er)危(wei)害全部橡膠軟管的(de)使用壽命。