1、橡膠軟管總成
1)高(gao)(gao)壓(ya)(ya)膠(jiao)管(guan)(guan)由內膠(jiao)層、提(ti)高(gao)(gao)層和外(wai)(wai)膠(jiao)層構成(如(ru)圖例),內膠(jiao)層立即與液壓(ya)(ya)油觸碰,故規定在(zai)(zai)長(chang)期性(xing)(xing)(xing)運行狀態(tai)下不(bu)可受(shou)液體浸蝕,能(neng)補漏。在(zai)(zai)提(ti)高(gao)(gao)層功效下會(hui)(hui)承擔一(yi)(yi)定工作壓(ya)(ya)力。因而,宜選用丁腈橡膠(jiao),除塑膠(jiao)粒外(wai)(wai),危害(hai)(hai)(hai)性(xing)(xing)(xing)能(neng)的(de)關(guan)鍵要(yao)素(su)也有內膠(jiao)層的(de)強度(du)(du)(du)、薄厚(hou)和永(yong)久(jiu)(jiu)(jiu)性(xing)(xing)(xing)形變(bian)量(liang)。強度(du)(du)(du)和永(yong)久(jiu)(jiu)(jiu)性(xing)(xing)(xing)形變(bian)量(liang)對密(mi)封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)危害(hai)(hai)(hai)非常大。一(yi)(yi)般強度(du)(du)(du)高(gao)(gao)、縮(suo)小(xiao)后的(de)永(yong)久(jiu)(jiu)(jiu)性(xing)(xing)(xing)形變(bian)量(liang)小(xiao),密(mi)封(feng)性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)則越好。一(yi)(yi)般是在(zai)(zai)70~85邵(shao)氏硬度(du)(du)(du),縮(suo)小(xiao)永(yong)久(jiu)(jiu)(jiu)性(xing)(xing)(xing)形變(bian)50%時(shi)。內膠(jiao)層薄厚(hou)建議是為1.5~2.5mm,太厚(hou)會(hui)(hui)在(zai)(zai)壓(ya)(ya)扣時(shi)提(ti)升其(qi)流動率(lv),導致(zhi)不(bu)必要(yao)的(de)膠(jiao)在(zai)(zai)接頭芯套與橡膠(jiao)軟管(guan)(guan)的(de)觸碰內孔內沉積,減少商(shang)品流通橫截面(mian);過薄會(hui)(hui)在(zai)(zai)壓(ya)(ya)扣時(shi)被(bei)壓(ya)(ya)裂。另外(wai)(wai)內膠(jiao)層壁厚(hou)勻稱性(xing)(xing)(xing)也很重(zhong)要(yao)。假如(ru)薄厚(hou)不(bu)勻,縮(suo)小(xiao)后會(hui)(hui)導致(zhi)一(yi)(yi)面(mian)裂斷、一(yi)(yi)面(mian)堆膠(jiao)。內膠(jiao)層表(biao)層出現的(de)浮銹也是危害(hai)(hai)(hai)性(xing)(xing)(xing)能(neng)品質的(de)關(guan)鍵要(yao)素(su)。
2)高(gao)壓(ya)膠(jiao)管關鍵借助提高(gao)層(ceng)(ceng)來承受力(li)。手工編織橡(xiang)膠(jiao)軟管是靠膠(jiao)漿與內外黏(nian)膠(jiao)粘緊,因為同(tong)一手工編織層(ceng)(ceng)內不銹鋼(gang)絲(si)(si)中(zhong)(zhong)(zhong)間(jian)的(de)(de)互相觸碰,在(zai)承擔氣體(ti)壓(ya)力(li)的(de)(de)時候會因分別(bie)伸縮式(shi)不一而導(dao)致不銹鋼(gang)絲(si)(si)彼此之間(jian)的(de)(de)摩擦而危害其使用性能(neng)。而螺旋波紋管是由盤繞方位不一樣的(de)(de)雙層(ceng)(ceng)產生(sheng)一個工作中(zhong)(zhong)(zhong)層(ceng)(ceng),在(zai)雙層(ceng)(ceng)中(zhong)(zhong)(zhong)間(jian)有(you)正中(zhong)(zhong)(zhong)間(jian)膠(jiao),因而同(tong)一工作中(zhong)(zhong)(zhong)層(ceng)(ceng)的(de)(de)雙層(ceng)(ceng)不銹鋼(gang)絲(si)(si)中(zhong)(zhong)(zhong)間(jian)沒有(you)交接點。因此 不容(rong)易在(zai)承擔氣體(ti)壓(ya)力(li)時同(tong)于不銹鋼(gang)絲(si)(si)間(jian)的(de)(de)交叉(cha)式(shi)彎折而產生(sheng)應力(li)或磨擦磨壞。故使用性能(neng)好,能(neng)承擔髙壓(ya)。
3)高(gao)壓膠管(guan)的外膠層(ceng)粘在提(ti)高(gao)層(ceng)上起(qi)維護(hu)功(gong)效(xiao),一般(ban)選(xuan)用氯(lv)丁(ding)膠。應留意避免(mian) 其(qi)脆化開裂而危(wei)害全部(bu)橡膠軟管(guan)的使用壽命。