1、橡膠軟管總成
1)高(gao)壓(ya)(ya)膠(jiao)(jiao)(jiao)(jiao)(jiao)管由內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)、提高(gao)層(ceng)(ceng)(ceng)和外(wai)(wai)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)構成(如圖例),內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)立即(ji)與液(ye)壓(ya)(ya)油觸(chu)碰,故(gu)規定在(zai)長期(qi)性(xing)(xing)運行(xing)狀態(tai)下不可受液(ye)體浸蝕,能(neng)(neng)補漏。在(zai)提高(gao)層(ceng)(ceng)(ceng)功效下會承擔一(yi)(yi)定工作(zuo)壓(ya)(ya)力。因而,宜選用丁腈橡(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao),除塑膠(jiao)(jiao)(jiao)(jiao)(jiao)粒(li)外(wai)(wai),危(wei)害(hai)性(xing)(xing)能(neng)(neng)的(de)(de)(de)關(guan)鍵要素也(ye)有內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)的(de)(de)(de)強度(du)、薄(bo)厚和永(yong)久(jiu)性(xing)(xing)形(xing)(xing)變(bian)量(liang)。強度(du)和永(yong)久(jiu)性(xing)(xing)形(xing)(xing)變(bian)量(liang)對密(mi)封性(xing)(xing)性(xing)(xing)能(neng)(neng)危(wei)害(hai)非常大。一(yi)(yi)般強度(du)高(gao)、縮(suo)小后的(de)(de)(de)永(yong)久(jiu)性(xing)(xing)形(xing)(xing)變(bian)量(liang)小,密(mi)封性(xing)(xing)性(xing)(xing)能(neng)(neng)則(ze)越好(hao)。一(yi)(yi)般是在(zai)70~85邵氏硬度(du),縮(suo)小永(yong)久(jiu)性(xing)(xing)形(xing)(xing)變(bian)50%時(shi)。內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)薄(bo)厚建議是為1.5~2.5mm,太厚會在(zai)壓(ya)(ya)扣(kou)時(shi)提升其流動(dong)率,導致不必(bi)要的(de)(de)(de)膠(jiao)(jiao)(jiao)(jiao)(jiao)在(zai)接頭芯套與橡(xiang)膠(jiao)(jiao)(jiao)(jiao)(jiao)軟管的(de)(de)(de)觸(chu)碰內(nei)(nei)孔內(nei)(nei)沉積,減少商品流通橫截面;過薄(bo)會在(zai)壓(ya)(ya)扣(kou)時(shi)被壓(ya)(ya)裂(lie)。另外(wai)(wai)內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)壁厚勻(yun)稱性(xing)(xing)也(ye)很重要。假如薄(bo)厚不勻(yun),縮(suo)小后會導致一(yi)(yi)面裂(lie)斷、一(yi)(yi)面堆膠(jiao)(jiao)(jiao)(jiao)(jiao)。內(nei)(nei)膠(jiao)(jiao)(jiao)(jiao)(jiao)層(ceng)(ceng)(ceng)表層(ceng)(ceng)(ceng)出(chu)現(xian)的(de)(de)(de)浮銹也(ye)是危(wei)害(hai)性(xing)(xing)能(neng)(neng)品質的(de)(de)(de)關(guan)鍵要素。
2)高壓(ya)膠(jiao)管(guan)關鍵借助提高層(ceng)(ceng)來(lai)承受力。手(shou)工(gong)編織(zhi)橡(xiang)膠(jiao)軟管(guan)是(shi)靠(kao)膠(jiao)漿(jiang)與(yu)內外(wai)黏膠(jiao)粘緊,因為同一(yi)(yi)手(shou)工(gong)編織(zhi)層(ceng)(ceng)內不銹(xiu)鋼(gang)絲中間(jian)的(de)互相(xiang)觸(chu)碰,在承擔氣體壓(ya)力的(de)時(shi)候會因分別伸縮式不一(yi)(yi)而導(dao)致不銹(xiu)鋼(gang)絲彼此之(zhi)間(jian)的(de)摩擦而危害其使(shi)用性(xing)能(neng)(neng)。而螺旋波紋管(guan)是(shi)由盤(pan)繞方位不一(yi)(yi)樣的(de)雙層(ceng)(ceng)產生一(yi)(yi)個工(gong)作(zuo)中層(ceng)(ceng),在雙層(ceng)(ceng)中間(jian)有正中間(jian)膠(jiao),因而同一(yi)(yi)工(gong)作(zuo)中層(ceng)(ceng)的(de)雙層(ceng)(ceng)不銹(xiu)鋼(gang)絲中間(jian)沒有交接點。因此 不容易在承擔氣體壓(ya)力時(shi)同于不銹(xiu)鋼(gang)絲間(jian)的(de)交叉式彎折(zhe)而產生應力或磨擦磨壞(huai)。故使(shi)用性(xing)能(neng)(neng)好,能(neng)(neng)承擔髙(gao)壓(ya)。
3)高(gao)壓(ya)膠管的外膠層粘在提(ti)高(gao)層上起(qi)維(wei)護功效,一般選用氯丁膠。應留意避免(mian) 其脆化開裂而危害全部橡膠軟管的使用壽命。