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使用歐美日韓亞洲國產:湖南PPH管的前提條件(jian)是焊接技術(shu)得做好

PPH管焊接工藝
PPH管(guan)(guan)管(guan)(guan)材(cai)剪(jian)(jian)切(qie)(qie)是制造(zao)(zao)管(guan)(guan)材(cai)零件的(de)(de)基本(ben)工序，包括管(guan)(guan)材(cai)切(qie)(qie)斷(duan)、端口形(xing)樣沖(chong)裁、沖(chong)孔及切(qie)(qie)口等(deng)。管(guan)(guan)材(cai)剪(jian)(jian)切(qie)(qie)屬沖(chong)壓加(jia)(jia)工分離工序，它與(yu)板材(cai)剪(jian)(jian)切(qie)(qie)相(xiang)比(bi)，由于自身的(de)(de)形(xing)狀(空心截(jie)面)特點(dian)，剪(jian)(jian)切(qie)(qie)時(shi)為防止管(guan)(guan)壁被壓扁(bian)，采取的(de)(de)工藝措施比(bi)較復雜，同時(shi)對(dui)模具設計及制造(zao)(zao)也提出了更高要求。管(guan)(guan)材(cai)剪(jian)(jian)切(qie)(qie)與(yu)機(ji)加(jia)(jia)工切(qie)(qie)斷(duan)相(xiang)比(bi)，由于加(jia)(jia)工速度快，生產效(xiao)率(lv)高，適(shi)合(he)大批(pi)量生產。因(yin)而(er)有廣泛的(de)(de)應(ying)(ying)用前景口但(dan)由于管(guan)(guan)材(cai)剪(jian)(jian)切(qie)(qie)加(jia)(jia)工本(ben)身較復雜，而(er)且在(zai)技術上(shang)也有不夠(gou)成熟之處。所以在(zai)生產中的(de)(de)應(ying)(ying)用還不夠(gou)廣泛口本(ben)章主要介(jie)紹管(guan)(guan)材(cai)剪(jian)(jian)切(qie)(qie)的(de)(de)各種工藝方法(fa)及適(shi)用范圍。

歐美日韓亞洲國產:湖南PPH管材切斷
在管(guan)(guan)(guan)(guan)(guan)材(cai)(cai)(cai)(cai)零件(jian)(jian)的制造中，首先需對管(guan)(guan)(guan)(guan)(guan)材(cai)(cai)(cai)(cai)進行切(qie)(qie)(qie)(qie)斷(duan)(duan)(duan)(duan)，以獲得管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)所需長度(du)的管(guan)(guan)(guan)(guan)(guan)坯(pi)。管(guan)(guan)(guan)(guan)(guan)材(cai)(cai)(cai)(cai)切(qie)(qie)(qie)(qie)斷(duan)(duan)(duan)(duan)主要用(yong)機械加(jia)工(gong)和沖(chong)壓加(jia)工(gong)兩種方(fang)(fang)法。機械加(jia)工(gong)包括鋸床(chuang)切(qie)(qie)(qie)(qie)斷(duan)(duan)(duan)(duan)、車床(chuang)切(qie)(qie)(qie)(qie)斷(duan)(duan)(duan)(duan)、砂輪切(qie)(qie)(qie)(qie)斷(duan)(duan)(duan)(duan)等，優點(dian)是切(qie)(qie)(qie)(qie)斷(duan)(duan)(duan)(duan)面(mian)質量穩定，但(dan)因其生(sheng)產(chan)(chan)率低，故難以滿足大批量生(sheng)產(chan)(chan)的要求(qiu)(qiu)。沖(chong)壓加(jia)工(gong)生(sheng)產(chan)(chan)率高(gao)，但(dan)切(qie)(qie)(qie)(qie)斷(duan)(duan)(duan)(duan)時(shi)管(guan)(guan)(guan)(guan)(guan)壁易被(bei)壓扁，導致切(qie)(qie)(qie)(qie)斷(duan)(duan)(duan)(duan)面(mian)畸變(bian)、歪(wai)斜。如果采(cai)用(yong)剪切(qie)(qie)(qie)(qie)棒料的方(fang)(fang)法剪切(qie)(qie)(qie)(qie)普材(cai)(cai)(cai)(cai)，管(guan)(guan)(guan)(guan)(guan)材(cai)(cai)(cai)(cai)必然被(bei)壓扁而(er)不能使(shi)用(yong)。因此，采(cai)取(qu)特(te)殊的工(gong)藝措施，防止剪切(qie)(qie)(qie)(qie)時(shi)管(guan)(guan)(guan)(guan)(guan)材(cai)(cai)(cai)(cai)被(bei)壓扁，以保(bao)證切(qie)(qie)(qie)(qie)斷(duan)(duan)(duan)(duan)面(mian)質量滿足管(guan)(guan)(guan)(guan)(guan)件(jian)(jian)的使(shi)用(yong)要求(qiu)(qiu)，是十分重要的。下面(mian)介紹幾種已(yi)在生(sheng)產(chan)(chan)中應用(yong)的特(te)殊的PPR管(guan)(guan)(guan)(guan)(guan)材(cai)(cai)(cai)(cai)管(guan)(guan)(guan)(guan)(guan)材(cai)(cai)(cai)(cai)切(qie)(qie)(qie)(qie)斷(duan)(duan)(duan)(duan)方(fang)(fang)法。

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