Common kupunduka ndi kupewa welded chitoliro

Zolakwika zomwe zimapangidwa popanga mapaipi owotcherera othamanga kwambiri (astm a53 grade b erw pipe) nthawi zina sizimayamba chifukwa chimodzi, koma nthawi zambiri zimachitika chifukwa chophatikiza zinthu zingapo.Zowonongeka zowotcherera zimathanso kuyambitsidwa ndi zifukwa zina kunja kwa malo owotcherera, kotero zinthu zambiri ziyenera kuganiziridwa mozama za zolakwika , Vutoli lingathe kuthetsedwa pofufuza mosamala zifukwa.

Zophatikiza

Mapangidwe amapangidwe a zolakwika zophatikizika ndikuti okusayidi yachitsulo sikutuluka ndi chitsulo chosungunula, koma imayikidwa pamtunda wowotcherera.

Ma oxide achitsulo awa nthawi zambiri amapangidwa pamwamba pa chitsulo chosungunula pamtunda wa V.Pamene m'mphepete m'mphepete akuyandikira liwiro ndi wotsika kuposa liwiro losungunuka, ndipo liwiro losungunuka ndilokwera kuposa kuthamanga kwachitsulo chosungunula, nsonga ya V-mawonekedwe a V imapanga chitsulo chosungunuka ndi Kuphatikizidwa kwazitsulo zachitsulo sikungakhale kotheratu. kutulutsidwa pambuyo yachibadwa extrusion.Pamwamba pa njira yoyera yachitsulo imapangidwa ndi zitsulo zachitsulo izi, motero zimapanga zolakwika pakupangira ndi kuwotcherera.

Chilema ichi chidzapangitsa weld kung'ambika ataphwanyidwa, ndipo zophatikizika zidzawoneka pakusweka kwa weld.Chilemachi chimakhalapo m'njira zosiyanasiyana, nthawi zina limodzi, nthawi zina mu unyolo.

Njira zopewera kuwonongeka kwa kuphatikiza:

1. Ngodya yooneka ngati V imayendetsedwa mosamalitsa mkati mwa 4 ~ 6
2. Kusintha kwa unit kuti muwonetsetse kutalika kwa ngodya yotseguka
3. Chiŵerengero cha Mn/Si mu mankhwala a mzerewu ndi wamkulu kuposa 8: 1
4. Kuchepetsa makutidwe ndi okosijeni wa malo kuwotcherera

Pre-arc

Chilema chamtunduwu ndichosakwanira kuphatikizika komwe kumachitika chifukwa cha pre-arc.Nthawi zambiri, burr kapena oxide sikelo ndi dzimbiri m'mphepete mwa mzerewu zimapanga mlatho kutsogolo kwa V angle, zomwe zimapangitsa kuti dera lalifupi lizidumphira ndikupanga chodabwitsa cha pre-arc, komanso chozungulira. panopa amasintha njira yamakono ndikuchepetsa Kutentha pakona ya V kumachepetsedwa.

Zowonongeka zomwe zimayambitsidwa ndi kuthamangitsidwa nthawi yomweyo, kuphulika kowala komanso kosalala kwa ndege kumatha kuwoneka kuchokera pakuphulika kwa weld, nthawi zina palibe m'mphepete mwa nthiti kapena oxide sikelo, dzimbiri, ndi zina, koma ngodya yaying'ono ya V kapena voteji yokwera kwambiri imayambitsanso arc phenomenon , Izi zimachitika chifukwa cha kutulutsa kwamphamvu kwamagetsi m'mphepete mwa mzerewo.

Njira zodzitetezera pazovuta za pre-arc:

1. Ngodya yooneka ngati V imayendetsedwa mosamalitsa mkati mwa 4 ~ 6
2. Mphepete mwa mzerewu ndi woyera, wosalala komanso wopanda ma burrs
3. Madzi ozizira azikhala oyera, wongolerani komwe madzi ozizira akudutsa, ndipo yesani kupeŵa mbali ya V.

Kusakanikirana kosakwanira

Chilemachi ndi chifukwa chakuti m'mbali mwa n'kupanga ziwiri zimatenthedwa koma osasakanikirana kwathunthu, ndipo weld wabwino samapangidwa.Chifukwa chachindunji chosakwanira kuphatikizika ndi kutentha kosakwanira pakuwotcherera.Pali zinthu zambiri zokhudzana ndi zomwe zimayambitsa kutentha kosakwanira kwa kuwotcherera, monga mphamvu zothamanga kwambiri.Kutulutsa, V ngodya ndi kutalika kwa kutentha, malo a maginito bar, momwe amagwirira ntchito ndi kuziziritsa kwa maginito bar, kukula kwa koyilo yolowera, liwiro la kuwotcherera, ndi zina zotero, zinthu izi zimakhudzana, ndi zotsatira zophatikizana. kumabweretsa zofooka zotere.

Njira zodzitetezera pakuwonongeka kosakwanira kwa fusion:

1. Kufananiza kwa kuwotcherera athandizira kutentha ndi liwiro kuwotcherera, makhalidwe a zopangira chubu akusowekapo
2. Kugwira ntchito kwa maginito bar
3. V ngodya ndi kutalika kwa kutentha
4. Mafotokozedwe a coil induction

Kukhazikika ndi chikhalidwe chabwino cha zida ndizomwe zimafunikira popewa zolakwika.Kukonzekera kujambula ndi kusanthula magawo a ndondomeko kungapangitse ubwino wa mipope.