Kumvetsetsa ASTM A139: Msana wa Mapaipi a SAWH ndi Mapaipi Osefedwa Ozungulira

Mu dziko la mapaipi a mafakitale, malamulo ndi miyezo yoyendetsera zipangizo zomwe zimagwiritsidwa ntchito ndizofunikira kwambiri kuti zitsimikizire chitetezo, kulimba komanso magwiridwe antchito. Chimodzi mwa miyezo iyi ndiASTM A139, yomwe imagwira ntchito yofunika kwambiri popanga ndi kugwiritsa ntchito mapaipi a SAWH (spiral arc welded hollow) ndi mapaipi ozungulira. Mu blog iyi, tikambirana za kufunika kwa ASTM A139, makhalidwe a chitoliro cha SAWH, ndi ubwino wa Chitoliro Chozungulira cha Helical m'mafakitale osiyanasiyana.

Kodi ASTM A139 ndi chiyani?

ASTM A139 ndi mfundo yopangidwa ndi American Society for Testing and Materials (ASTM) yomwe imafotokoza zofunikira pa chitoliro chachitsulo cholumikizidwa ndi electrofusion (arc). Muyezo uwu umagwira ntchito makamaka pamapaipi omwe amagwiritsidwa ntchito kunyamula zakumwa ndi mpweya. Mfundoyi imakhudza mitundu yosiyanasiyana ya zitsulo ndipo imatsimikizira kuti mapaipi opangidwawo akukwaniritsa mawonekedwe enieni a makina ndi mankhwala.

Muyezo wa ASTM A139 ndi wofunikira kwambiri kwa opanga ndi mainjiniya chifukwa umapereka chitsogozo pa njira yopangira, kuphatikizapo njira zowotcherera ndi njira zowongolera khalidwe zomwe ziyenera kutengedwa. Potsatira miyezo iyi, opanga amatha kuwonetsetsa kuti zinthu zawo ndi zodalirika komanso zoyenera kugwiritsidwa ntchito m'njira zosiyanasiyana, kuyambira kunyamula mafuta ndi gasi mpaka kugwiritsa ntchito nyumba.

Udindo wa payipi ya SAWH

Chitoliro cha SAWH kapena chitoliro chozungulira chozungulira chozungulira chozungulira ndi mtundu wa chitoliro chozungulira chopangidwa ndi kulumikiza zitsulo zathyathyathya mozungulira kukhala mawonekedwe a cylindrical. Njira yopangira iyi imalola kupanga mapaipi akuluakulu omwe ndi olimba komanso opepuka. Ukadaulo wolumikizira wozungulira womwe umagwiritsidwa ntchito muMapaipi a SAWH imapereka zabwino zingapo, kuphatikizapo:

1. Kugwiritsa Ntchito Ndalama Moyenera:Njira yopangira mapaipi a SAWH nthawi zambiri imakhala yotsika mtengo kuposa njira zachikhalidwe, zomwe zimapangitsa kuti ikhale njira yokongola pamapulojekiti akuluakulu.

2. KUGWIRITSA NTCHITO NTCHITO:Chitoliro cha SAWH chingapangidwe m'makulidwe ndi makulidwe osiyanasiyana, zomwe zimapangitsa kuti chikhale choyenera kugwiritsidwa ntchito m'njira zosiyanasiyana, kuphatikizapo madzi, makina amadzi otayira, ndi zinthu zina zomangira.

3. Mphamvu Yowonjezereka:Kapangidwe ka spiral welded kamapereka mphamvu yowonjezera komanso kukana kupsinjika kwakunja, zomwe zimapangitsa chitoliro cha SAWH kukhala choyenera kwambiri m'malo opsinjika kwambiri.

Ubwino wa chitoliro chozungulira cholumikizidwa

Chitoliro cholumikizidwa ndi mtundu wina wa chitoliro cholumikizidwa chomwe chimapangidwa pogwiritsa ntchito ukadaulo wolumikizira chozungulira. Njirayi imaphatikizapo kukulunga chingwe chachitsulo mozungulira mandrel ndikuchilumikiza mozungulira mosalekeza.Helical welded chitoliro imapereka zabwino zingapo, kuphatikizapo:

1. Makhalidwe abwino a kayendedwe ka madzi:Kusalala kwa mkati mwa Helical Welded Pipe kumachepetsa kugwedezeka ndikuwongolera kuyenda kwa madzi, zomwe zimapangitsa kuti ikhale yoyenera kugwiritsidwa ntchito m'makampani amafuta ndi gasi.

2. KULEMERA KWACHEPETSEDWA:Kapangidwe kake kozungulira kamalola makoma opyapyala popanda kuwononga mphamvu, zomwe zimapangitsa kuti chitoliro chikhale chopepuka komanso chosavuta kuchigwira ndikuchinyamula.

3. Kutalika Kosinthika:Chitoliro Chopopera Chopopera Chingapangidwe m'litali kwambiri, kuchepetsa kuchuluka kwa malo olumikizirana omwe amafunikira mu chitoliro ndikuchepetsa kuthekera kwa kutuluka kwa madzi.

Pomaliza

Mwachidule, ASTM A139 ndi muyezo wofunikira kwambiri popanga chitoliro cha SAWH ndi chitoliro cholumikizidwa mozungulira, kuonetsetsa kuti zinthu zofunikazi zikukwaniritsa miyezo yofunikira yachitetezo ndi magwiridwe antchito. Kapangidwe kapadera ka chitoliro cholumikizidwa mozungulira kamapangitsa kuti chikhale chofunikira kwambiri m'mafakitale kuyambira pa zomangamanga mpaka mphamvu. Pamene ukadaulo ukupitilira kupita patsogolo, kufunika kotsatira miyezo yokhazikika monga ASTM A139 kudzakula kokha kuti zitsimikizire kuti zomangamanga zomwe timadalira zikhale zotetezeka komanso zogwira ntchito bwino. Kaya ndinu mainjiniya, kontrakitala, kapena woyang'anira polojekiti, kumvetsetsa miyezo iyi ndi ubwino wa mitundu iyi ya mapaipi ndikofunikira kwambiri popanga zisankho zodziwa bwino ntchito zanu.