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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(ti)條件(jian)是焊接技術得(de)做好

PPH管焊接工藝
PPH管(guan)(guan)(guan)(guan)(guan)管(guan)(guan)(guan)(guan)(guan)材剪(jian)切(qie)是(shi)制造(zao)管(guan)(guan)(guan)(guan)(guan)材零件的基(ji)本工序，包括(kuo)管(guan)(guan)(guan)(guan)(guan)材切(qie)斷(duan)、端口(kou)形樣沖裁、沖孔及切(qie)口(kou)等。管(guan)(guan)(guan)(guan)(guan)材剪(jian)切(qie)屬沖壓(ya)加(jia)工分離工序，它與板(ban)材剪(jian)切(qie)相比，由于(yu)自(zi)身的形狀(空心截面)特點，剪(jian)切(qie)時為防止管(guan)(guan)(guan)(guan)(guan)壁被壓(ya)扁，采取(qu)的工藝(yi)措施比較(jiao)復(fu)雜(za)，同時對模具設計及制造(zao)也提出(chu)了更高要(yao)求。管(guan)(guan)(guan)(guan)(guan)材剪(jian)切(qie)與機(ji)加(jia)工切(qie)斷(duan)相比，由于(yu)加(jia)工速度快，生(sheng)產(chan)效率高，適合大批量生(sheng)產(chan)。因(yin)而(er)有廣(guang)泛的應(ying)用前景口(kou)但(dan)由于(yu)管(guan)(guan)(guan)(guan)(guan)材剪(jian)切(qie)加(jia)工本身較(jiao)復(fu)雜(za)，而(er)且在(zai)(zai)技(ji)術上也有不夠成(cheng)熟之(zhi)處。所以在(zai)(zai)生(sheng)產(chan)中(zhong)的應(ying)用還不夠廣(guang)泛口(kou)本章主(zhu)要(yao)介紹管(guan)(guan)(guan)(guan)(guan)材剪(jian)切(qie)的各種工藝(yi)方(fang)法及適用范圍。

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)(de)制造中，首先需(xu)對管(guan)(guan)材(cai)(cai)(cai)進(jin)行切(qie)(qie)(qie)斷(duan)(duan)(duan)，以獲得管(guan)(guan)件(jian)所(suo)需(xu)長度的(de)(de)管(guan)(guan)坯。管(guan)(guan)材(cai)(cai)(cai)切(qie)(qie)(qie)斷(duan)(duan)(duan)主要(yao)用機械加(jia)工(gong)(gong)和(he)沖(chong)壓加(jia)工(gong)(gong)兩種(zhong)(zhong)方法。機械加(jia)工(gong)(gong)包括鋸床切(qie)(qie)(qie)斷(duan)(duan)(duan)、車床切(qie)(qie)(qie)斷(duan)(duan)(duan)、砂(sha)輪切(qie)(qie)(qie)斷(duan)(duan)(duan)等(deng)，優(you)點是(shi)切(qie)(qie)(qie)斷(duan)(duan)(duan)面質量穩定，但(dan)(dan)因其(qi)生產率(lv)(lv)低，故難以滿足大批量生產的(de)(de)要(yao)求(qiu)。沖(chong)壓加(jia)工(gong)(gong)生產率(lv)(lv)高，但(dan)(dan)切(qie)(qie)(qie)斷(duan)(duan)(duan)時管(guan)(guan)壁易被(bei)壓扁，導致切(qie)(qie)(qie)斷(duan)(duan)(duan)面畸變、歪(wai)斜(xie)。如果采(cai)用剪切(qie)(qie)(qie)棒(bang)料的(de)(de)方法剪切(qie)(qie)(qie)普(pu)材(cai)(cai)(cai)，管(guan)(guan)材(cai)(cai)(cai)必(bi)然被(bei)壓扁而(er)不能使用。因此，采(cai)取特(te)殊(shu)的(de)(de)工(gong)(gong)藝(yi)措施，防止剪切(qie)(qie)(qie)時管(guan)(guan)材(cai)(cai)(cai)被(bei)壓扁，以保證切(qie)(qie)(qie)斷(duan)(duan)(duan)面質量滿足管(guan)(guan)件(jian)的(de)(de)使用要(yao)求(qiu)，是(shi)十分重(zhong)要(yao)的(de)(de)。下面介紹(shao)幾種(zhong)(zhong)已在生產中應用的(de)(de)特(te)殊(shu)的(de)(de)PPR管(guan)(guan)材(cai)(cai)(cai)管(guan)(guan)材(cai)(cai)(cai)切(qie)(qie)(qie)斷(duan)(duan)(duan)方法。

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