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使用亞洲婷婷國產精品電影人久久:湖南PPH管的前提條件是焊接技術得做好(hao)

PPH管焊接工藝
PPH管(guan)(guan)管(guan)(guan)材(cai)剪(jian)(jian)切(qie)(qie)是制造管(guan)(guan)材(cai)零件的(de)(de)基本(ben)工序，包(bao)括管(guan)(guan)材(cai)切(qie)(qie)斷、端口(kou)(kou)形樣沖(chong)(chong)裁、沖(chong)(chong)孔(kong)及切(qie)(qie)口(kou)(kou)等。管(guan)(guan)材(cai)剪(jian)(jian)切(qie)(qie)屬沖(chong)(chong)壓加(jia)工分離工序，它與板材(cai)剪(jian)(jian)切(qie)(qie)相(xiang)比(bi)，由于(yu)自身的(de)(de)形狀(空心截面)特點，剪(jian)(jian)切(qie)(qie)時為防(fang)止管(guan)(guan)壁被壓扁，采取的(de)(de)工藝措施比(bi)較復雜，同時對模具設(she)計及制造也(ye)提出了更高要求。管(guan)(guan)材(cai)剪(jian)(jian)切(qie)(qie)與機(ji)加(jia)工切(qie)(qie)斷相(xiang)比(bi)，由于(yu)加(jia)工速度快，生產效率高，適合大批(pi)量生產。因而(er)有廣(guang)泛的(de)(de)應(ying)用(yong)前景口(kou)(kou)但由于(yu)管(guan)(guan)材(cai)剪(jian)(jian)切(qie)(qie)加(jia)工本(ben)身較復雜，而(er)且在技術(shu)上也(ye)有不夠成熟之處(chu)。所以在生產中的(de)(de)應(ying)用(yong)還(huan)不夠廣(guang)泛口(kou)(kou)本(ben)章主要介紹管(guan)(guan)材(cai)剪(jian)(jian)切(qie)(qie)的(de)(de)各種工藝方法及適用(yong)范圍。

亞洲婷婷國產精品電影人久久:湖南PPH管材切斷
在管(guan)(guan)材(cai)(cai)(cai)零件(jian)的(de)制造中(zhong)，首先需(xu)對管(guan)(guan)材(cai)(cai)(cai)進(jin)行切斷(duan)(duan)，以(yi)(yi)獲得管(guan)(guan)件(jian)所需(xu)長度的(de)管(guan)(guan)坯。管(guan)(guan)材(cai)(cai)(cai)切斷(duan)(duan)主要(yao)用(yong)機械加(jia)(jia)(jia)工(gong)(gong)(gong)和沖壓(ya)加(jia)(jia)(jia)工(gong)(gong)(gong)兩種方(fang)法(fa)。機械加(jia)(jia)(jia)工(gong)(gong)(gong)包括鋸床切斷(duan)(duan)、車床切斷(duan)(duan)、砂(sha)輪切斷(duan)(duan)等，優點是切斷(duan)(duan)面(mian)質(zhi)量(liang)穩定，但因(yin)其生(sheng)產率(lv)低，故難以(yi)(yi)滿足大批量(liang)生(sheng)產的(de)要(yao)求。沖壓(ya)加(jia)(jia)(jia)工(gong)(gong)(gong)生(sheng)產率(lv)高(gao)，但切斷(duan)(duan)時(shi)管(guan)(guan)壁(bi)易被壓(ya)扁，導致切斷(duan)(duan)面(mian)畸變、歪斜。如(ru)果采(cai)用(yong)剪切棒料的(de)方(fang)法(fa)剪切普材(cai)(cai)(cai)，管(guan)(guan)材(cai)(cai)(cai)必然被壓(ya)扁而不(bu)能使用(yong)。因(yin)此，采(cai)取特(te)殊的(de)工(gong)(gong)(gong)藝措(cuo)施(shi)，防(fang)止(zhi)剪切時(shi)管(guan)(guan)材(cai)(cai)(cai)被壓(ya)扁，以(yi)(yi)保證切斷(duan)(duan)面(mian)質(zhi)量(liang)滿足管(guan)(guan)件(jian)的(de)使用(yong)要(yao)求，是十分重要(yao)的(de)。下(xia)面(mian)介(jie)紹(shao)幾種已在生(sheng)產中(zhong)應用(yong)的(de)特(te)殊的(de)PPR管(guan)(guan)材(cai)(cai)(cai)管(guan)(guan)材(cai)(cai)(cai)切斷(duan)(duan)方(fang)法(fa)。

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