德國FESTO管接頭處為什么會泄漏？

FESTO管(guan)(guan)接(jie)(jie)頭PT是(shi)(shi)(shi)(shi)Pipe Thread的(de)(de)縮(suo)寫，是(shi)(shi)(shi)(shi)55度密封圓(yuan)錐(zhui)管(guan)(guan)螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)，屬惠氏螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)家(jia)族，多用于(yu)歐洲(zhou)及英(ying)(ying)聯(lian)邦國家(jia)．常(chang)(chang)用于(yu)水及煤氣管(guan)(guan)行(xing)業(ye)，錐(zhui)度規定(ding)為(wei)1:16．國家(jia)標(biao)(biao)準可查閱GB/T7306-2000 G是(shi)(shi)(shi)(shi)55度非(fei)螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)密封管(guan)(guan)螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)，屬惠氏螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)家(jia)族．標(biao)(biao)記(ji)為(wei)G代表(biao)(biao)圓(yuan)柱螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)．國家(jia)標(biao)(biao)準可查閱GB/T7307-2001 另外螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)中的(de)(de)1/4、1/2、1/8標(biao)(biao)記(ji)是(shi)(shi)(shi)(shi)指螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)尺寸的(de)(de)直(zhi)徑，單(dan)位是(shi)(shi)(shi)(shi)英(ying)(ying)吋． 行(xing)內人通常(chang)(chang)用分來稱(cheng)呼螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)尺寸，一(yi)吋等于(yu)８分，1/4吋就是(shi)(shi)(shi)(shi)２分，如此類推． G好像就是(shi)(shi)(shi)(shi)管(guan)(guan)螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)的(de)(de)統稱(cheng)（Guan），55，60度的(de)(de)劃分屬于(yu)功能性的(de)(de)，俗稱(cheng)管(guan)(guan)圓(yuan)。即螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)由一(yi)圓(yuan)柱面加工而(er)成(cheng)。 ZG俗稱(cheng)管(guan)(guan)錐(zhui)，即螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)由一(yi)圓(yuan)錐(zhui)面加工而(er)成(cheng)，一(yi)般的(de)(de)水FESTO管(guan)(guan)接(jie)(jie)頭都是(shi)(shi)(shi)(shi)這樣的(de)(de)，老國標(biao)(biao)標(biao)(biao)注為(wei)Rc 公(gong)(gong)制(zhi)(zhi)(zhi)螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)用螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)距來表(biao)(biao)示(shi)，美(mei)(mei)英(ying)(ying)制(zhi)(zhi)(zhi)螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)用每英(ying)(ying)寸內的(de)(de)螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)牙(ya)數來表(biao)(biao)示(shi)，這是(shi)(shi)(shi)(shi)它(ta)們zui大(da)的(de)(de)區別， 公(gong)(gong)制(zhi)(zhi)(zhi)螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)是(shi)(shi)(shi)(shi)60度等邊牙(ya)型(xing)，英(ying)(ying)制(zhi)(zhi)(zhi)螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)是(shi)(shi)(shi)(shi)等腰(yao)55度牙(ya)型(xing)，美(mei)(mei)制(zhi)(zhi)(zhi)螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)60度。 公(gong)(gong)制(zhi)(zhi)(zhi)螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)用公(gong)(gong)制(zhi)(zhi)(zhi)單(dan)位，美(mei)(mei)英(ying)(ying)制(zhi)(zhi)(zhi)螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)用英(ying)(ying)制(zhi)(zhi)(zhi)單(dan)位。 管(guan)(guan)螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)主(zhu)要用來進行(xing)管(guan)(guan)道的(de)(de)連接(jie)(jie)，其內外螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)的(de)(de)配合緊密，有直(zhi)管(guan)(guan)與錐(zhui)管(guan)(guan)兩種。公(gong)(gong)稱(cheng)直(zhi)徑是(shi)(shi)(shi)(shi)指所連接(jie)(jie)的(de)(de)管(guan)(guan)道直(zhi)徑，顯然螺(luo)(luo)(luo)(luo)(luo)(luo)(luo)紋(wen)(wen)(wen)(wen)(wen)(wen)(wen)大(da)徑比公(gong)(gong)稱(cheng)直(zhi)徑大(da)。

德國FESTO接頭（圖）

FESTO管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)處(chu)泄(xie)漏，無(wu)論是何材質，首先(xian)應(ying)(ying)(ying)檢查其(qi)密封(feng)件(jian)有(you)(you)(you)無(wu)破(po)損，變(bian)形、老化和(he)(he)粗糙(cao)度(du)(du)過(guo)(guo)大(da)等(deng)(deng)情(qing)況，然后(hou)(hou)采(cai)取相應(ying)(ying)(ying)的(de)(de)(de)(de)(de)(de)(de)(de)措(cuo)施。 三、高(gao)壓(ya)(ya)膠(jiao)(jiao)(jiao)FESTO管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)的(de)(de)(de)(de)(de)(de)(de)(de)安(an)(an)(an)裝(zhuang)注(zhu)意(yi)(yi)事(shi)項（１）膠(jiao)(jiao)(jiao)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)在(zai)(zai)(zai)(zai)移動或(huo)靜止中，均不(bu)(bu)(bu)能(neng)(neng)過(guo)(guo)度(du)(du)彎(wan)(wan)曲(qu)(qu)，也不(bu)(bu)(bu)能(neng)(neng)在(zai)(zai)(zai)(zai)根部彎(wan)(wan)曲(qu)(qu)，至少(shao)要(yao)(yao)(yao)(yao)在(zai)(zai)(zai)(zai)其(qi)直徑(jing)(jing)(jing)的(de)(de)(de)(de)(de)(de)(de)(de)1.5倍(bei)處(chu)開始(shi)彎(wan)(wan)曲(qu)(qu)；（２）膠(jiao)(jiao)(jiao)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)移動到(dao)位置(zhi)(zhi)時(shi)(shi)(shi)(shi)(shi)(shi)不(bu)(bu)(bu)得拉得太緊，應(ying)(ying)(ying)比較松弛；（３）盡(jin)(jin)量避免膠(jiao)(jiao)(jiao)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)(de)(de)扭轉(zhuan)變(bian)形；（４）膠(jiao)(jiao)(jiao)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)盡(jin)(jin)可(ke)能(neng)(neng)遠離(li)熱輻(fu)射構件(jian)，必要(yao)(yao)(yao)(yao)時(shi)(shi)(shi)(shi)(shi)(shi)裝(zhuang)隔熱板(ban)；（５）應(ying)(ying)(ying)避免膠(jiao)(jiao)(jiao)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)外部損傷，如(ru)使用(yong)(yong)(yong)(yong)(yong)(yong)(yong)中同(tong)(tong)構件(jian)表面(mian)的(de)(de)(de)(de)(de)(de)(de)(de)長(chang)(chang)(chang)期摩擦等(deng)(deng)；（６）若(ruo)膠(jiao)(jiao)(jiao)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)自重(zhong)引起過(guo)(guo)分變(bian)形時(shi)(shi)(shi)(shi)(shi)(shi)，應(ying)(ying)(ying)有(you)(you)(you)支托(tuo)件(jian)。四、管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)路(lu)(lu)預(yu)安(an)(an)(an)裝(zhuang)8．1管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)路(lu)(lu)簡介（１）雙線主(zhu)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)及支管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)：從(cong)潤(run)滑泵(beng)出(chu)(chu)來一直到(dao)所有(you)(you)(you)分配(pei)器的(de)(de)(de)(de)(de)(de)(de)(de)進(jin)油(you)口(kou)(kou)，承(cheng)受(shou)壓(ya)(ya)力(li)(li)相對(dui)(dui)較高(gao)。通(tong)常采(cai)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)冷(leng)拔無(wu)縫鋼管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，材料為10或(huo)15號鋼。絕不(bu)(bu)(bu)能(neng)(neng)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)銹蝕嚴重(zhong)的(de)(de)(de)(de)(de)(de)(de)(de)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)子(zi)(zi)；（２）給(gei)油(you)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)：從(cong)分配(pei)器出(chu)(chu)來到(dao)所有(you)(you)(you)潤(run)滑點進(jin)油(you)口(kou)(kou)（軸承(cheng)座油(you)孔(kong)），承(cheng)受(shou)壓(ya)(ya)力(li)(li)相對(dui)(dui)較低(di)。通(tong)常采(cai)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)拉制紫銅管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，走向彎(wan)(wan)曲(qu)(qu)時(shi)(shi)(shi)(shi)(shi)(shi)便(bian)于(yu)配(pei)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)。也有(you)(you)(you)采(cai)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)冷(leng)拔無(wu)縫鋼管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)或(huo)不(bu)(bu)(bu)銹鋼管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)(de)(de)；（３）遇到(dao)活動部位連接(jie)(jie)(jie)(jie)(jie)時(shi)(shi)(shi)(shi)(shi)(shi)采(cai)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)膠(jiao)(jiao)(jiao)FESTO管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)。8．2管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)路(lu)(lu)布置(zhi)(zhi)要(yao)(yao)(yao)(yao)求(qiu)（１）管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)路(lu)(lu)要(yao)(yao)(yao)(yao)盡(jin)(jin)量避開高(gao)溫輻(fu)射及冷(leng)卻水噴淋等(deng)(deng)溫度(du)(du)太高(gao)或(huo)太低(di)之處(chu)，特別是膠(jiao)(jiao)(jiao)FESTO管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)；（２）布管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)應(ying)(ying)(ying)不(bu)(bu)(bu)影(ying)(ying)響主(zhu)機等(deng)(deng)設備運轉(zhuan)，要(yao)(yao)(yao)(yao)安(an)(an)(an)全(quan)(quan)可(ke)靠，方(fang)便(bian)工作、觀察(cha)、維修；（３）布管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)要(yao)(yao)(yao)(yao)橫平(ping)豎直、整(zheng)齊(qi)美(mei)觀。盡(jin)(jin)量少(shao)拐彎(wan)(wan)或(huo)小(xiao)角度(du)(du)彎(wan)(wan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)，采(cai)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)大(da)圓弧(hu)(hu)，從(cong)而(er)減(jian)少(shao)油(you)流阻力(li)(li)；４）安(an)(an)(an)裝(zhuang)發生抵觸(chu)(chu)時(shi)(shi)(shi)(shi)(shi)(shi)，應(ying)(ying)(ying)小(xiao)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)讓大(da)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)、低(di)壓(ya)(ya)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)讓高(gao)壓(ya)(ya)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)；（５） 管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)在(zai)(zai)(zai)(zai)相互(hu)交叉(cha)時(shi)(shi)(shi)(shi)(shi)(shi)不(bu)(bu)(bu)能(neng)(neng)接(jie)(jie)(jie)(jie)(jie)觸(chu)(chu)，應(ying)(ying)(ying)隔開一定(ding)距離(li)；（６） 平(ping)行管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)的(de)(de)(de)(de)(de)(de)(de)(de)接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)要(yao)(yao)(yao)(yao)錯開安(an)(an)(an)裝(zhuang)，FESTO管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)以免影(ying)(ying)響安(an)(an)(an)裝(zhuang)和(he)(he)拆卸；（７）管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)道(dao)為便(bian)于(yu)拆卸清洗，應(ying)(ying)(ying)適當(dang)安(an)(an)(an)裝(zhuang)活接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)，但(dan)要(yao)(yao)(yao)(yao)少(shao)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)，減(jian)少(shao)泄(xie)漏的(de)(de)(de)(de)(de)(de)(de)(de)可(ke)能(neng)(neng)性。8．3確(que)定(ding)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)子(zi)(zi)長(chang)(chang)(chang)度(du)(du)（１）根據8.2條確(que)定(ding)的(de)(de)(de)(de)(de)(de)(de)(de)定(ding)配(pei)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)路(lu)(lu)徑(jing)(jing)(jing)，在(zai)(zai)(zai)(zai)現(xian)場(chang)測定(ding)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)子(zi)(zi)的(de)(de)(de)(de)(de)(de)(de)(de)長(chang)(chang)(chang)度(du)(du)，要(yao)(yao)(yao)(yao)注(zhu)意(yi)(yi)彎(wan)(wan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)半(ban)徑(jing)(jing)(jing)的(de)(de)(de)(de)(de)(de)(de)(de)大(da)小(xiao)的(de)(de)(de)(de)(de)(de)(de)(de)影(ying)(ying)響；（２）要(yao)(yao)(yao)(yao)把(ba)各類不(bu)(bu)(bu)同(tong)(tong)的(de)(de)(de)(de)(de)(de)(de)(de)FESTO管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)接(jie)(jie)(jie)(jie)(jie)入管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)路(lu)(lu)后(hou)(hou)的(de)(de)(de)(de)(de)(de)(de)(de)影(ying)(ying)響考慮(lv)在(zai)(zai)(zai)(zai)內(nei)(nei)；（３）管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)子(zi)(zi)長(chang)(chang)(chang)度(du)(du)應(ying)(ying)(ying)逐段(duan)(duan)確(que)定(ding)、切(qie)斷(duan)、預(yu)裝(zhuang)，以方(fang)便(bian)現(xian)場(chang)根據實際(ji)情(qing)況調整(zheng)，如(ru)果(guo)一下子(zi)(zi)全(quan)(quan)部切(qie)斷(duan)，出(chu)(chu)現(xian)積累誤差(cha)時(shi)(shi)(shi)(shi)(shi)(shi)，配(pei)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)就困難了；（４）切(qie)下的(de)(de)(de)(de)(de)(de)(de)(de)短(duan)(duan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)要(yao)(yao)(yao)(yao)盡(jin)(jin)量利用(yong)(yong)(yong)(yong)(yong)(yong)(yong)在(zai)(zai)(zai)(zai)各個需(xu)要(yao)(yao)(yao)(yao)短(duan)(duan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)的(de)(de)(de)(de)(de)(de)(de)(de)地方(fang)，必要(yao)(yao)(yao)(yao)時(shi)(shi)(shi)(shi)(shi)(shi)可(ke)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)直通(tong)FESTO管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)接(jie)(jie)(jie)(jie)(jie)長(chang)(chang)(chang)，但(dan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)段(duan)(duan)上(shang)接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)宜少(shao)不(bu)(bu)(bu)宜多(duo)。8．4管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)子(zi)(zi)切(qie)斷(duan)（１）用(yong)(yong)(yong)(yong)(yong)(yong)(yong)鋸床或(huo)切(qie)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)機等(deng)(deng)機具(ju)切(qie)斷(duan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)子(zi)(zi)，不(bu)(bu)(bu)允許用(yong)(yong)(yong)(yong)(yong)(yong)(yong)溶(rong)斷(duan)（如(ru)火焰切(qie)割）或(huo)砂輪(lun)切(qie)割；（２）切(qie)口(kou)(kou)要(yao)(yao)(yao)(yao)平(ping)整(zheng)，斷(duan)面(mian)平(ping)面(mian)度(du)(du)不(bu)(bu)(bu)大(da)于(yu)1毫米，與(yu)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)子(zi)(zi)軸線垂直度(du)(du)不(bu)(bu)(bu)大(da)于(yu)1度(du)(du)；（３）用(yong)(yong)(yong)(yong)(yong)(yong)(yong)銼刀(dao)、刮刀(dao)等(deng)(deng)除去(qu)切(qie)屑和(he)(he)毛刺；（４）用(yong)(yong)(yong)(yong)(yong)(yong)(yong)干凈的(de)(de)(de)(de)(de)(de)(de)(de)壓(ya)(ya)縮空氣或(huo)其(qi)他方(fang)法(fa)清除管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)內(nei)(nei)附著的(de)(de)(de)(de)(de)(de)(de)(de)雜(za)物及浮銹；8．5管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)子(zi)(zi)彎(wan)(wan)曲(qu)(qu)（１）用(yong)(yong)(yong)(yong)(yong)(yong)(yong)彎(wan)(wan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)機冷(leng)彎(wan)(wan)，不(bu)(bu)(bu)能(neng)(neng)熱彎(wan)(wan)（大(da)口(kou)(kou)徑(jing)(jing)(jing)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)子(zi)(zi)可(ke)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)直角接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)替(ti)代彎(wan)(wan)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)），彎(wan)(wan)曲(qu)(qu)半(ban)徑(jing)(jing)(jing)要(yao)(yao)(yao)(yao)在(zai)(zai)(zai)(zai)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)徑(jing)(jing)(jing)的(de)(de)(de)(de)(de)(de)(de)(de)４倍(bei)以上(shang)；（２）彎(wan)(wan)曲(qu)(qu)處(chu)的(de)(de)(de)(de)(de)(de)(de)(de)橢圓度(du)(du)（長(chang)(chang)(chang)短(duan)(duan)徑(jing)(jing)(jing)變(bian)化）少(shao)于(yu)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)徑(jing)(jing)(jing)的(de)(de)(de)(de)(de)(de)(de)(de)10%，且(qie)不(bu)(bu)(bu)能(neng)(neng)出(chu)(chu)現(xian)折皺；（３） 若(ruo)彎(wan)(wan)曲(qu)(qu)處(chu)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)端(duan)(duan)有(you)(you)(you)接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)，管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)端(duan)(duan)應(ying)(ying)(ying)有(you)(you)(you)一段(duan)(duan)直管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)與(yu)接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)相連，以避影(ying)(ying)響安(an)(an)(an)裝(zhuang)；8．6管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)子(zi)(zi)與(yu)接(jie)(jie)(jie)(jie)(jie)頭(tou)(tou)(tou)焊接(jie)(jie)(jie)(jie)(jie)（１）采(cai)用(yong)(yong)(yong)(yong)(yong)(yong)(yong)鎢(wu)極氬弧(hu)(hu)焊或(huo)氬弧(hu)(hu)焊封(feng)底后(hou)(hou)電(dian)弧(hu)(hu)焊充(chong)填焊。當(dang)壓(ya)(ya)力(li)(li)超過(guo)(guo)21mpa時(shi)(shi)(shi)(shi)(shi)(shi)，應(ying)(ying)(ying)同(tong)(tong)時(shi)(shi)(shi)(shi)(shi)(shi)在(zai)(zai)(zai)(zai)管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)內(nei)(nei)部通(tong)5l/min氬氣；（２）管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)子(zi)(zi)壁(bi)厚(hou)>2mm時(shi)(shi)(shi)(shi)(shi)(shi)，外圓應(ying)(ying)(ying)切(qie)35°坡口(kou)(kou)，并在(zai)(zai)(zai)(zai)對(dui)(dui)口(kou)(kou)處(chu)留(liu)3mm間(jian)(jian)隙(xi)；管(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)(guan)壁(bi)厚(hou)≤2mm時(shi)(shi)(shi)(shi)(shi)(shi)，不(bu)(bu)(bu)切(qie)坡口(kou)(kou)，對(dui)(dui)口(kou)(kou)處(chu)留(liu)2mm間(jian)(jian)隙(xi)。

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