Emkhakheni wokukhiqiza amapayipi, amazinga ahlukahlukene kanye nokucaciswa okudingeka kulandelwe ukuze kuqinisekiswe ikhwalithi nokuphepha komkhiqizo wokugcina.I-ASTM A139kungenye yezinga elinjalo elidlala indima ebalulekile ekukhiqizeni amapayipi ensimbi okusetshenziswa okuhlukahlukene.
I-ASTM A139 iwukucaciswa okujwayelekile kwepayipi lensimbi elishiselwe i-electrofusion (arc) (NPS 4 nangaphezulu).Ihlanganisa izidingo ze-spiral seam electrofusion (i-arc) eshiselwe, udonga oluncane, ipayipi lensimbi ye-austenitic yezicelo ezigqwalayo noma zokushisa okuphezulu.Leli zinga lichaza izidingo zezinto zokwakha, izinqubo zokukhiqiza, ubukhulu kanye nezakhiwo zemishini zamapayipi ensimbi.
Izidingo ezibonakalayo ze-ASTM A139 zicacisa izinhlobo namabanga ensimbi angasetshenziswa ukwenza amapayipi.Lokhu kuhlanganisa ukwakheka kwamakhemikhali ensimbi, okumele aqukathe amaphesenti athile ezakhi ezifana nekhabhoni, i-manganese, i-phosphorus, isulfure ne-silicon.Lezi zidingo zibalulekile ekuqinisekiseni ukuthi insimbi isetshenziswa kuamapayipiihlangabezana namandla adingekayo kanye namazinga okumelana nokugqwala.
Inqubo yokukhiqiza yepayipi le-ASTM A139 ihlanganisa ukushisela kwe-electrofusion (arc), esebenzisa i-arc kagesi ukukhiqiza ukushisa okudingekayo ukushisela imicu yensimbi ibe yisimo esiyicylindrical.Le nqubo ilawulwa ngokucophelela ukuze kuqinisekiswe ukuthi ama-welds asezingeni eliphezulu futhi awanawo amaphutha.Izinga liphinde licacise izindlela zokuhlola zokushisela, njengokuhlola kwe-ultrasonic kanye nokuhlolwa kokugoba okuqondiswa okuphambene, ukuze kuqinisekiswe ukuthi ahlangabezana nezindinganiso zekhwalithi ezidingekayo.
Ngokuphathelene nobukhulu, i-ASTM A139 ichaza izidingo zosayizi wamapayipi, ukujiya kodonga, nobude.Lokhu kuhlanganisa ukubekezelelana okuqondile kobukhulu ukuze kuqinisekiswe ukuthi ipayipi ihlangabezana nezincazelo ezidingekayo zokusetshenziswa okuhlosiwe.Lezi zidingo zobukhulu zibalulekile ekuqinisekiseni ukuthi amapayipi afakiwe futhi axhunywe ngendlela efanele ezinhlelweni ezihlukahlukene.
Izakhiwo zikagesi ezifana namandla aqinile, amandla esivuno, nobude nazo zicaciswe ku-ASTM A139.Lezi zakhiwo zibalulekile ekunqumeni amandla nokusebenza kwepayipi ngaphansi kwezimo ezihlukahlukene zokusebenza.Izinga libeka izidingo ezincane zalezi zakhiwo zemishini ukuze kuqinisekiswe ukuthi ipayipi ingakwazi ukumelana nokucindezela okulindelekile, izinga lokushisa kanye nezimo zemvelo.
Sekukonke, i-ASTM A139 idlala indima ebalulekile ekwenziweni kweamapayipi ensimbikwezinhlelo zokusebenza ezahlukahlukene.Ngokucacisa izinto zokwakha, izinqubo zokukhiqiza, ubukhulu kanye nezakhiwo zemishini zamapayipi, izinga liqinisekisa ukuthi umkhiqizo wokugcina uhlangabezana nezindinganiso ezidingekayo zekhwalithi kanye nokuphepha.Inikeza abakhiqizi, onjiniyela nabasebenzisi bokugcina ithemba lokuthi ipayipi lizokwenza njengoba kulindelekile ekusetshenzisweni kwalo okuhlosiwe.
Kafushane, ukuqonda ukubaluleka kwe-ASTM A139 ekukhiqizeni amapayipi kubalulekile ekuqinisekiseni ikhwalithi nokuphepha kwemikhiqizo yamapayipi ensimbi.Izinga libeka izidingo ezidingekayo zezinto zokwakha, izinqubo zokukhiqiza, ubukhulu kanye nezakhiwo zemishini ukuze kuqinisekiswe ukuthi amapayipi ahlangabezana nekhwalithi edingekayo kanye namazinga okusebenza.Ngokunamathela ku-ASTM A139, abakhiqizi bangakhiqiza ipayipi lensimbi eliphezulu elihlangabezana nezidingo zezimboni ezihlukahlukene kanye nezicelo.
Isikhathi sokuthumela: Dec-28-2023