1、橡膠軟管總成
1)高壓膠(jiao)(jiao)(jiao)(jiao)管由內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層、提(ti)高層和(he)外膠(jiao)(jiao)(jiao)(jiao)層構成(如圖例),內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層立(li)即與(yu)液(ye)壓油觸碰(peng),故規定在長期(qi)性(xing)(xing)(xing)運行狀態下(xia)不可(ke)受液(ye)體浸蝕,能(neng)補漏。在提(ti)高層功(gong)效下(xia)會(hui)承擔(dan)一(yi)定工作壓力。因而,宜選用丁(ding)腈(jing)橡(xiang)膠(jiao)(jiao)(jiao)(jiao),除塑(su)膠(jiao)(jiao)(jiao)(jiao)粒外,危害性(xing)(xing)(xing)能(neng)的(de)關鍵要素(su)也有內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層的(de)強度(du)(du)、薄(bo)(bo)(bo)厚和(he)永(yong)久(jiu)(jiu)性(xing)(xing)(xing)形(xing)變量。強度(du)(du)和(he)永(yong)久(jiu)(jiu)性(xing)(xing)(xing)形(xing)變量對(dui)密封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)危害非常大。一(yi)般強度(du)(du)高、縮小(xiao)(xiao)(xiao)后(hou)的(de)永(yong)久(jiu)(jiu)性(xing)(xing)(xing)形(xing)變量小(xiao)(xiao)(xiao),密封性(xing)(xing)(xing)性(xing)(xing)(xing)能(neng)則(ze)越(yue)好。一(yi)般是(shi)在70~85邵氏硬(ying)度(du)(du),縮小(xiao)(xiao)(xiao)永(yong)久(jiu)(jiu)性(xing)(xing)(xing)形(xing)變50%時(shi)。內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層薄(bo)(bo)(bo)厚建議是(shi)為(wei)1.5~2.5mm,太厚會(hui)在壓扣時(shi)提(ti)升其流(liu)動率,導(dao)致不必要的(de)膠(jiao)(jiao)(jiao)(jiao)在接頭芯(xin)套與(yu)橡(xiang)膠(jiao)(jiao)(jiao)(jiao)軟管的(de)觸碰(peng)內(nei)(nei)(nei)孔內(nei)(nei)(nei)沉(chen)積,減少商(shang)品(pin)流(liu)通橫截面(mian);過薄(bo)(bo)(bo)會(hui)在壓扣時(shi)被(bei)壓裂。另外內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層壁厚勻(yun)稱(cheng)性(xing)(xing)(xing)也很(hen)重要。假如薄(bo)(bo)(bo)厚不勻(yun),縮小(xiao)(xiao)(xiao)后(hou)會(hui)導(dao)致一(yi)面(mian)裂斷、一(yi)面(mian)堆(dui)膠(jiao)(jiao)(jiao)(jiao)。內(nei)(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層表層出(chu)現的(de)浮銹也是(shi)危害性(xing)(xing)(xing)能(neng)品(pin)質的(de)關鍵要素(su)。
2)高壓(ya)膠(jiao)管(guan)關鍵借助提高層(ceng)(ceng)(ceng)來承(cheng)受力(li)。手(shou)工編織橡膠(jiao)軟管(guan)是(shi)靠膠(jiao)漿與內(nei)外黏膠(jiao)粘緊(jin),因(yin)為同(tong)一(yi)(yi)(yi)手(shou)工編織層(ceng)(ceng)(ceng)內(nei)不(bu)(bu)銹鋼絲(si)中(zhong)(zhong)間(jian)的互相觸碰(peng),在承(cheng)擔(dan)氣(qi)體(ti)壓(ya)力(li)的時候(hou)會(hui)因(yin)分別伸(shen)縮(suo)式不(bu)(bu)一(yi)(yi)(yi)而導致(zhi)不(bu)(bu)銹鋼絲(si)彼此之間(jian)的摩擦而危害其使用(yong)性能(neng)。而螺旋波紋管(guan)是(shi)由(you)盤繞方位不(bu)(bu)一(yi)(yi)(yi)樣的雙(shuang)層(ceng)(ceng)(ceng)產生一(yi)(yi)(yi)個(ge)工作中(zhong)(zhong)層(ceng)(ceng)(ceng),在雙(shuang)層(ceng)(ceng)(ceng)中(zhong)(zhong)間(jian)有(you)(you)正(zheng)中(zhong)(zhong)間(jian)膠(jiao),因(yin)而同(tong)一(yi)(yi)(yi)工作中(zhong)(zhong)層(ceng)(ceng)(ceng)的雙(shuang)層(ceng)(ceng)(ceng)不(bu)(bu)銹鋼絲(si)中(zhong)(zhong)間(jian)沒有(you)(you)交接點。因(yin)此 不(bu)(bu)容易在承(cheng)擔(dan)氣(qi)體(ti)壓(ya)力(li)時同(tong)于不(bu)(bu)銹鋼絲(si)間(jian)的交叉(cha)式彎折而產生應力(li)或磨擦磨壞。故使用(yong)性能(neng)好(hao),能(neng)承(cheng)擔(dan)髙壓(ya)。
3)高壓(ya)膠管的(de)外膠層粘在提高層上(shang)起維護功效,一般選用氯丁膠。應(ying)留意避(bi)免 其脆化開裂而危害全部橡膠軟(ruan)管的(de)使(shi)用壽命。