液壓(ya)成形是金屬鋼波紋涵管應用常(chang)見(jian)的(de)一(yi)種成形(xing)方法(fa)(fa)。主要用來制造環形(xing)波(bo)紋涵(han)(han)(han)管(guan),可成形(xing)壁厚0.08-4mm的(de)波(bo)紋涵(han)(han)(han)管(guan)。波(bo)紋涵(han)(han)(han)管(guan)液壓成形(xing)是(shi)管(guan)坯在受內(nei)壁液體(ti)壓力下,當應力超過屈服強度后,在專用模其內(nei)成形(xing)為波(bo)紋涵(han)(han)(han)管(guan)。金屬(shu)波(bo)紋涵(han)(han)(han)管(guan)2.機械成形(xing)工藝(yi)波(bo)紋涵(han)(han)(han)管(guan)的(de)機械成形(xing),包括旋1-I成形(xing)、滾(gun)仄(ze)成形(xing)和機械膨脹(zhang)等工藝(yi)方法(fa)(fa)。
為什么說要加強鋼波紋涵管的承載能力迫在眉睫?
按現在橋(qiao)梁(liang)和運(yun)輸狀(zhuang)況,橋(qiao)梁(liang)的(de)(de)承載(zai)能(neng)力和通過的(de)(de)車輛不成正(zheng)比(bi)。舊(jiu)橋(qiao)加(jia)固工程迫在眉睫,為了提高舊(jiu)橋(qiao)的(de)(de)承載(zai)能(neng)力,確(que)保交通運(yun)輸的(de)(de)安全是目前和今后面臨的(de)(de)任(ren)務。今天小編給大家介紹一(yi)款舊(jiu)橋(qiao)加(jia)固的(de)(de)好產品(pin)---鋼波(bo)紋涵管。
鐵(tie)路鋼波紋管(guan)
機械液壓成形的(de)波(bo)紋(wen)涵管,由于波(bo)峰、波(bo)谷都參(can)加(jia)了變形,都達到了強化(hua),對提(ti)高波(bo)紋(wen)涵管彈性起到了良好的(de)作用(yong),是制造深(shen)波(bo)波(bo)紋(wen)涵管的(de)一種有效工藝方法。隨著經濟的(de)發展和重點工程的(de)建(jian)設(she),目前公(gong)路橋梁所承受的(de)負荷有3個特(te)點:1、交通量不斷增(zeng)大。2、重型車輛增(zeng)加(jia)及(ji)超載現象(xiang)嚴重。3、超限(xian)運(yun)輸的(de)出現和增(zeng)加(jia)。
它是以橡膠(jiao)為成(cheng)形(xing)(xing)(xing)(xing)凸模,在壓力(li)作用(yong)(yong)下像膠(jiao)凸模變(bian)形(xing)(xing)(xing)(xing),把管坯按凹模型腔成(cheng)形(xing)(xing)(xing)(xing)波(bo)紋涵管,成(cheng)形(xing)(xing)(xing)(xing)方式通常是單波(bo)連(lian)續成(cheng)形(xing)(xing)(xing)(xing)。金屬波(bo)紋涵管4.機(ji)械(xie)液(ye)1-I;成(cheng)形(xing)(xing)(xing)(xing)機(ji)械(xie)液(ye)壓成(cheng)形(xing)(xing)(xing)(xing)是將管幼:先用(yong)(yong)滾(gun)壓方法(fa)向內滾(gun)形(xing)(xing)(xing)(xing),然后用(yong)(yong)液(ye)壓方法(fa)向外脹形(xing)(xing)(xing)(xing)形(xing)(xing)(xing)(xing)成(cheng)波(bo)紋涵管的成(cheng)形(xing)(xing)(xing)(xing)方法(fa)。
一(yi)般來說機械成形其有工(gong)(gong)藝(yi)簡單、工(gong)(gong)裝制造容(rong)易,生(sheng)產(chan)效(xiao)率(lv)高等優(you)點(dian)。同時(shi)也存在產(chan)品制造比較(jiao)粗(cu)糙,性能不高等缺(que)點(dian).它較(jiao)多應用于螺旋波(bo)紋涵管,波(bo)紋膨(peng)脹(zhang)(zhang)節、大(da)直徑厚壁波(bo)紋涵管的制造。金屬(shu)波(bo)紋涵管3.橡(xiang)膠(jiao)(jiao)成形工(gong)(gong)藝(yi)橡(xiang)膠(jiao)(jiao)成形工(gong)(gong)藝(yi)是脹(zhang)(zhang)形工(gong)(gong)藝(yi)的一(yi)種。
波(bo)(bo)紋(wen)(wen)(wen)涵(han)管的(de)(de)波(bo)(bo)紋(wen)(wen)(wen)成(cheng)(cheng)形(xing)是(shi)制(zhi)造(zao)波(bo)(bo)紋(wen)(wen)(wen)涵(han)管的(de)(de)關(guan)鍵工(gong)藝。日前常用的(de)(de)成(cheng)(cheng)形(xing)方法有(you):液壓(ya)成(cheng)(cheng)形(xing)、機(ji)械(xie)(xie)成(cheng)(cheng)形(xing)、橡(xiang)膠成(cheng)(cheng)形(xing)、焊(han)接成(cheng)(cheng)形(xing)、電化學成(cheng)(cheng)形(xing)等(deng)。液壓(ya)成(cheng)(cheng)形(xing)和(he)機(ji)械(xie)(xie)成(cheng)(cheng)形(xing)是(shi)金(jin)(jin)(jin)屬(shu)波(bo)(bo)紋(wen)(wen)(wen)涵(han)管制(zhi)造(zao)行(xing)業常用的(de)(de)工(gong)藝。它適于(yu)制(zhi)造(zao)其有(you)良好塑性的(de)(de)銅合金(jin)(jin)(jin)、不銹鋼、彈性合金(jin)(jin)(jin)及高(gao)溫(wen)合金(jin)(jin)(jin)等(deng)材料的(de)(de)U型、S型等(deng)波(bo)(bo)型的(de)(de)波(bo)(bo)紋(wen)(wen)(wen)涵(han)管,其有(you)的(de)(de)適應性和(he)良好的(de)(de)工(gong)藝性。
鋼波(bo)紋涵管(guan)具有(you)重量輕,施工(gong)簡(jian)單、工(gong)期短等(deng)優點(dian),波(bo)紋管(guan)底部及(ji)兩(liang)側可填充沙(sha)礫、碎石土、片石砼等(deng)材料,鋼波(bo)紋涵管(guan)頂部可用高壓泵送膨脹(zhang)(zhang)水泥沙(sha)漿或砌筑片石膨脹(zhang)(zhang)砼,此方法在舊橋(qiao)加固工(gong)程中取得了(le)很好的(de)效果。(hanihanbj.com)
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