液壓成形(xing)是金屬鋼波紋涵管應用(yong)常(chang)見的一種成(cheng)(cheng)(cheng)(cheng)形(xing)方法。主要用(yong)來制(zhi)造環(huan)形(xing)波(bo)(bo)(bo)紋(wen)(wen)涵(han)管(guan)(guan),可成(cheng)(cheng)(cheng)(cheng)形(xing)壁(bi)厚0.08-4mm的波(bo)(bo)(bo)紋(wen)(wen)涵(han)管(guan)(guan)。波(bo)(bo)(bo)紋(wen)(wen)涵(han)管(guan)(guan)液壓(ya)(ya)成(cheng)(cheng)(cheng)(cheng)形(xing)是(shi)管(guan)(guan)坯在(zai)受內壁(bi)液體壓(ya)(ya)力下,當應力超(chao)過屈(qu)服強度(du)后,在(zai)專(zhuan)用(yong)模(mo)其內成(cheng)(cheng)(cheng)(cheng)形(xing)為(wei)波(bo)(bo)(bo)紋(wen)(wen)涵(han)管(guan)(guan)。金屬波(bo)(bo)(bo)紋(wen)(wen)涵(han)管(guan)(guan)2.機(ji)械成(cheng)(cheng)(cheng)(cheng)形(xing)工藝波(bo)(bo)(bo)紋(wen)(wen)涵(han)管(guan)(guan)的機(ji)械成(cheng)(cheng)(cheng)(cheng)形(xing),包括(kuo)旋1-I成(cheng)(cheng)(cheng)(cheng)形(xing)、滾仄成(cheng)(cheng)(cheng)(cheng)形(xing)和機(ji)械膨脹(zhang)等工藝方法。
為什么說要加強鋼波紋涵管的承載能力迫在眉睫?
按現在(zai)橋梁和(he)運(yun)輸狀況(kuang),橋梁的(de)承載(zai)能力和(he)通過的(de)車輛(liang)不成正(zheng)比(bi)。舊橋加固工程迫在(zai)眉睫,為(wei)了(le)提高舊橋的(de)承載(zai)能力,確保交通運(yun)輸的(de)安全是目前(qian)和(he)今后面(mian)臨的(de)任務。今天小(xiao)編(bian)給大(da)家介紹一款舊橋加固的(de)好產品(pin)---鋼(gang)波紋涵管。
鐵路鋼波(bo)紋管
機械液(ye)壓成(cheng)形的波(bo)紋涵(han)管(guan)(guan),由于波(bo)峰、波(bo)谷都參加了變(bian)形,都達到(dao)(dao)了強化,對提(ti)高波(bo)紋涵(han)管(guan)(guan)彈(dan)性起到(dao)(dao)了良好(hao)的作用,是制造深(shen)波(bo)波(bo)紋涵(han)管(guan)(guan)的一(yi)種有效工藝(yi)方法。隨(sui)著經(jing)濟的發(fa)展和重(zhong)點(dian)工程的建(jian)設(she),目(mu)前(qian)公路(lu)橋梁所承受的負荷有3個特(te)點(dian):1、交通量不斷(duan)增大。2、重(zhong)型(xing)車輛增加及(ji)超載現象(xiang)嚴重(zhong)。3、超限運輸的出現和增加。
它是以橡(xiang)膠為(wei)成(cheng)形(xing)(xing)(xing)凸(tu)模(mo),在(zai)壓力作(zuo)用下(xia)像(xiang)膠凸(tu)模(mo)變形(xing)(xing)(xing),把管(guan)(guan)坯按凹模(mo)型腔成(cheng)形(xing)(xing)(xing)波(bo)紋(wen)(wen)涵管(guan)(guan),成(cheng)形(xing)(xing)(xing)方(fang)(fang)式通常(chang)是單波(bo)連續成(cheng)形(xing)(xing)(xing)。金(jin)屬波(bo)紋(wen)(wen)涵管(guan)(guan)4.機械液1-I;成(cheng)形(xing)(xing)(xing)機械液壓成(cheng)形(xing)(xing)(xing)是將管(guan)(guan)幼:先(xian)用滾壓方(fang)(fang)法(fa)向內滾形(xing)(xing)(xing),然后用液壓方(fang)(fang)法(fa)向外脹(zhang)形(xing)(xing)(xing)形(xing)(xing)(xing)成(cheng)波(bo)紋(wen)(wen)涵管(guan)(guan)的成(cheng)形(xing)(xing)(xing)方(fang)(fang)法(fa)。
一(yi)般來說(shuo)機械成形其有(you)工(gong)藝(yi)簡單、工(gong)裝制(zhi)造(zao)(zao)容易,生產效率高(gao)等優點。同時也存在產品(pin)制(zhi)造(zao)(zao)比(bi)較(jiao)粗糙,性能不高(gao)等缺點.它較(jiao)多應用于螺旋波紋涵管(guan),波紋膨(peng)脹(zhang)節、大直徑厚壁波紋涵管(guan)的(de)(de)制(zhi)造(zao)(zao)。金屬波紋涵管(guan)3.橡(xiang)膠(jiao)成形工(gong)藝(yi)橡(xiang)膠(jiao)成形工(gong)藝(yi)是(shi)脹(zhang)形工(gong)藝(yi)的(de)(de)一(yi)種。
波(bo)(bo)(bo)(bo)紋涵管的(de)(de)波(bo)(bo)(bo)(bo)紋成形(xing)是制(zhi)造波(bo)(bo)(bo)(bo)紋涵管的(de)(de)關(guan)鍵工藝。日前常用的(de)(de)成形(xing)方(fang)法有:液壓成形(xing)、機(ji)械成形(xing)、橡膠成形(xing)、焊接成形(xing)、電化學成形(xing)等。液壓成形(xing)和機(ji)械成形(xing)是金(jin)屬波(bo)(bo)(bo)(bo)紋涵管制(zhi)造行業常用的(de)(de)工藝。它適于(yu)制(zhi)造其(qi)有良(liang)好(hao)塑(su)性的(de)(de)銅合(he)金(jin)、不(bu)銹鋼(gang)、彈性合(he)金(jin)及高溫合(he)金(jin)等材(cai)料的(de)(de)U型、S型等波(bo)(bo)(bo)(bo)型的(de)(de)波(bo)(bo)(bo)(bo)紋涵管,其(qi)有的(de)(de)適應(ying)性和良(liang)好(hao)的(de)(de)工藝性。
鋼(gang)波紋涵管具有重量輕,施工簡單、工期(qi)短等優點,波紋管底部及(ji)兩側可(ke)填充沙(sha)礫、碎石土、片石砼等材料,鋼(gang)波紋涵管頂(ding)部可(ke)用高壓(ya)泵送膨(peng)(peng)脹水泥沙(sha)漿或砌筑片石膨(peng)(peng)脹砼,此方(fang)法在舊橋加固工程中取得了很(hen)好(hao)的效(xiao)果。(hanihanbj.com)
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