1、橡膠軟管總成
1)高(gao)壓膠(jiao)(jiao)(jiao)(jiao)管(guan)由內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)、提(ti)高(gao)層(ceng)(ceng)(ceng)和(he)外膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)構(gou)成(如圖例),內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)立(li)即與液壓油觸碰,故規定在(zai)長期性(xing)運行狀(zhuang)態下(xia)不可受液體浸蝕,能(neng)(neng)補漏。在(zai)提(ti)高(gao)層(ceng)(ceng)(ceng)功效下(xia)會(hui)承擔一(yi)(yi)(yi)定工作壓力。因而,宜選用(yong)丁腈橡膠(jiao)(jiao)(jiao)(jiao),除塑膠(jiao)(jiao)(jiao)(jiao)粒外,危害性(xing)能(neng)(neng)的(de)(de)關(guan)鍵(jian)要素(su)也(ye)有(you)內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)的(de)(de)強(qiang)度(du)、薄厚(hou)(hou)和(he)永(yong)(yong)久(jiu)性(xing)形(xing)變(bian)量(liang)。強(qiang)度(du)和(he)永(yong)(yong)久(jiu)性(xing)形(xing)變(bian)量(liang)對密封性(xing)性(xing)能(neng)(neng)危害非常大。一(yi)(yi)(yi)般強(qiang)度(du)高(gao)、縮(suo)小(xiao)后(hou)(hou)的(de)(de)永(yong)(yong)久(jiu)性(xing)形(xing)變(bian)量(liang)小(xiao),密封性(xing)性(xing)能(neng)(neng)則越好。一(yi)(yi)(yi)般是在(zai)70~85邵(shao)氏硬度(du),縮(suo)小(xiao)永(yong)(yong)久(jiu)性(xing)形(xing)變(bian)50%時(shi)。內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)薄厚(hou)(hou)建議是為1.5~2.5mm,太厚(hou)(hou)會(hui)在(zai)壓扣時(shi)提(ti)升其流動率,導(dao)致(zhi)不必(bi)要的(de)(de)膠(jiao)(jiao)(jiao)(jiao)在(zai)接(jie)頭芯(xin)套與橡膠(jiao)(jiao)(jiao)(jiao)軟管(guan)的(de)(de)觸碰內(nei)(nei)孔(kong)內(nei)(nei)沉積,減少(shao)商品流通(tong)橫截面;過薄會(hui)在(zai)壓扣時(shi)被壓裂(lie)。另外內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)壁厚(hou)(hou)勻(yun)稱性(xing)也(ye)很重要。假如薄厚(hou)(hou)不勻(yun),縮(suo)小(xiao)后(hou)(hou)會(hui)導(dao)致(zhi)一(yi)(yi)(yi)面裂(lie)斷、一(yi)(yi)(yi)面堆膠(jiao)(jiao)(jiao)(jiao)。內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)出(chu)現(xian)的(de)(de)浮銹也(ye)是危害性(xing)能(neng)(neng)品質的(de)(de)關(guan)鍵(jian)要素(su)。
2)高(gao)壓(ya)膠(jiao)(jiao)管關(guan)鍵借助提高(gao)層(ceng)來承受(shou)力。手工(gong)編織橡(xiang)膠(jiao)(jiao)軟管是靠(kao)膠(jiao)(jiao)漿與(yu)內外黏膠(jiao)(jiao)粘(zhan)緊(jin),因(yin)(yin)為(wei)同(tong)一(yi)手工(gong)編織層(ceng)內不銹鋼絲中(zhong)間(jian)的(de)互(hu)相觸碰,在承擔氣體壓(ya)力的(de)時候會因(yin)(yin)分別伸縮式(shi)不一(yi)而(er)導(dao)致不銹鋼絲彼此之(zhi)間(jian)的(de)摩(mo)擦而(er)危害其使(shi)用性能(neng)(neng)。而(er)螺旋波紋管是由盤繞方位不一(yi)樣的(de)雙(shuang)(shuang)(shuang)層(ceng)產生(sheng)一(yi)個工(gong)作(zuo)中(zhong)層(ceng),在雙(shuang)(shuang)(shuang)層(ceng)中(zhong)間(jian)有正中(zhong)間(jian)膠(jiao)(jiao),因(yin)(yin)而(er)同(tong)一(yi)工(gong)作(zuo)中(zhong)層(ceng)的(de)雙(shuang)(shuang)(shuang)層(ceng)不銹鋼絲中(zhong)間(jian)沒有交(jiao)接點。因(yin)(yin)此 不容易在承擔氣體壓(ya)力時同(tong)于不銹鋼絲間(jian)的(de)交(jiao)叉(cha)式(shi)彎折而(er)產生(sheng)應(ying)力或磨擦磨壞。故使(shi)用性能(neng)(neng)好,能(neng)(neng)承擔髙(gao)壓(ya)。
3)高壓(ya)膠(jiao)管(guan)的(de)(de)外膠(jiao)層粘(zhan)在提高層上(shang)起維護功效,一般(ban)選(xuan)用氯丁膠(jiao)。應留意避免 其脆化(hua)開裂而(er)危害全部橡膠(jiao)軟(ruan)管(guan)的(de)(de)使用壽命。