Emkhakheni wokukhiqiza amapayipi, amazinga ahlukahlukene kanye nokucaciswa kudinga ukulandela ukuqinisekisa ikhwalithi nokuphepha komkhiqizo wokugcina.I-ASTM A139Ingabe enye indinganiso ethola indima ebalulekile ekukhiqizweni kwamapayipi ensimbi wezinhlelo zokusebenza ezahlukahlukene.
I-ASTM A139 iyincazelo ejwayelekile ye-electrofulusion (arc) ipayipi lensimbi elihlanganisiwe (NPS 4 nangaphezulu). Ihlanganisa izidingo ze-Electrofulusiul (i-ARC) ye-WelderFusion eSpiral SeldeFuef (i-ARC), udonga oluncane, ipayipi lensimbi ye-auntenitic lezinhlelo zokusebenza zokushisa eziphakeme. Leli Zinga libonisa izidingo zezinto zokwakha, izinqubo zokukhiqiza, ubukhulu kanye nezindawo zemishini zamapayipi ensimbi.
Izidingo ezibonakalayo ze-ASTM A139 zichaza izinhlobo namamaki wensimbi engasetshenziswa ukwenza amapayipi. Lokhu kufaka phakathi ukwakheka kwamakhemikhali kwensimbi, okumele kube namaphesenti athile ezinto ezinjengekhabhoni, i-manganese, phosphorus, isibabule kanye ne-silicon. Lezi zidingo zibalulekile ekuqinisekiseni ukuthi insimbi esetshenziswe ngaphakathiamapayipiihlangabezana namandla adingekayo namazinga okumelana nokugqwala.
Inqubo yokukhiqiza ye-ASTM A139 ipayipi ifaka i-ElectroFUSIONSIONSIEL (ARC) Welding, esebenzisa i-arc kagesi ukukhiqiza ukushisa okudingekayo ezinhlafunweni zensimbi zibe yi-cylindrical. Le nqubo ilawulwa ngokucophelela ukuze iqinisekise ukuthi ama-welds asezingeni eliphakeme futhi engenazo iziphambeko. Izinga futhi licacisa izindlela zokuhlola zama-welds, njengokuhlolwa kwe-ultrasonic kanye nokuhlolwa kokugoba okuqondiswa ngokusobala, ukuqinisekisa ukuthi bahlangabezana namazinga adingekayo.
Ngokwezilinganiso, izidingo ze-ASTM A139 zichaza ngosayizi wepayipi, ubukhulu obudongeni nobude. Lokhu kufaka ukubekezelelwa okuthile ngobukhulu ukuqinisekisa ukuthi ipayipi lihlangabezana nokucaciswa okudingekayo kokusetshenziswa kwalo okuhlosiwe. Lezi zidingo ezinobukhulu zibalulekile ekuqinisekiseni ukuthi amapayipi afakiwe futhi axhunywe kahle ezinhlobonhlobo zezicelo.
Izakhiwo zemishini ezinjengamandla ashubile, amandla okuthela, futhi ukunwebeka nakho kuchaziwe ku-ASTM A139. Lezi zakhiwo zibalulekile ekutholeni amandla nokusebenza kwepayipi ngaphansi kwezimo ezahlukahlukene zokusebenza. I-Standard isetha izidingo eziphansi zalezi zindawo zemishini ukuze ziqinisekise ukuthi ipayipi likwazi ukumelana nengcindezi elilindelekile, izinga lokushisa kanye nezimo zemvelo.
Sekukonke, i-ASTM A139 idlala indima ebalulekile ekwenziweni kweAmapayipi ensimbiNgezicelo ezahlukahlukene. Ngokucacisa izinto zokwakha, izinqubo zokukhiqiza, ubukhulu kanye nezindawo zemishini zamapayipi, okujwayelekile kuqinisekisa ukuthi umkhiqizo wokugcina uhlangabezana namazinga adingekayo kanye nokuphepha. Inika abakhiqizi, onjiniyela kanye nokuphelisa abasebenzisi bokuqiniseka ukuthi ipayipi lizokwenza njengoba kulindeleke ukuthi kulindelwe uhlelo lwayo oluhlosiwe.
Ngamafuphi, ukuqonda ukubaluleka kwe-ASTM A139 ekukhiqizweni kwamapayipi kubalulekile ekuqinisekiseni ikhwalithi nokuphepha kwemikhiqizo yepayipi yensimbi. I-Standard ibeka izidingo ezidingekayo zezinto zokwakha, izinqubo zokukhiqiza, ubukhulu kanye nezindawo zemishini ukuqinisekisa ukuthi amapayipi ahlangabezana nekhwalithi edingekayo namazinga okusebenza. Ngokunamathela ku-ASTM A139, abakhiqizi bangakhiqiza ipayipi lensimbi ephezulu elihlangabezana nezidingo zezinhlobonhlobo zezimboni kanye nezicelo.
Isikhathi sePosi: Dece-28-2023