Insimbi engagqwali engasetshenziswa kabusha futhi eqhubekayo
Kusukela yethulwa okokuqala ngo-1915, insimbi engagqwali ikhethwe kabanzi ukuze isetshenziswe ezimbonini ezahlukahlukene ngenxa yezakhiwo zayo ezinhle kakhulu zemishini kanye nokugqwala. Manje, njengoba kugxilwe kakhulu ekukhetheni izinto ezihlala isikhathi eside, insimbi engagqwali ithola ukuqashelwa okukhulu ngenxa yezakhiwo zayo ezinhle kakhulu zemvelo. Insimbi engagqwali ingasetshenziswa kabusha ngo-100% futhi ngokuvamile ihlangabezana nezidingo zokuphila zephrojekthi enamazinga amahle kakhulu okubuyisa impilo. Ngaphezu kwalokho, kubalulekile ukuqaphela ukuthi yize kuvame ukuba nokukhetha okunzima okufanele kwenziwe phakathi kokusebenzisa ikhambi eliluhlaza nokusebenzisa ikhambi elingabizi kakhulu, izixazululo zensimbi engagqwali zivame ukunikeza ukunethezeka kokubili.
Insimbi engagqwali engasetshenziswa kabusha
Insimbi engagqwali ingasetshenziswa kabusha ngo-100% futhi ngeke yonakale. Inqubo yokusetshenziswa kabusha kwensimbi engagqwali ifana nokuyikhiqiza. Ngaphezu kwalokho, insimbi engagqwali yenziwe ngezinto eziningi zokusetshenziswa, okuhlanganisa insimbi, i-nickel, i-chromium kanye ne-molybdenum, futhi lezi zinto zidingeka kakhulu. Zonke lezi zinto ziyahlangana ukuze zenze ukuphinda kusetshenziswe insimbi engagqwali kube okonga kakhulu futhi ngaleyo ndlela kuholele emazingeni aphezulu kakhulu okusetshenziswa kabusha. Ucwaningo lwamuva nje lwe-International Stainless Steel Forum (ISSF) lubonisa ukuthi cishe u-92% wensimbi engagqwali esetshenziswa ezakhiweni, ezakhiweni nasezakhiweni emhlabeni wonke iyabanjwa futhi isetshenziswe kabusha ekupheleni kwenkonzo. [1]
Ngo-2002, i-International Stainless Steel Forum yalinganisela ukuthi okuqukethwe okuvamile okuphinde kwasetshenziswa kwensimbi engagqwali kungaba ngu-60%. Kwezinye izimo, lokhu kuphakeme. I-Specialty Steel Industries of North America (SSINA) ithi insimbi engagqwali engu-300 ekhiqizwa eNyakatho Melika inokuqukethwe okuphinde kwasetshenziswa ngemva kokusetshenziswa okungu-75% kuya ku-85%. [2] Nakuba lezi zinombolo zinhle kakhulu, kubalulekile ukuqaphela ukuthi azisona isizathu sokuba ziphakeme. Insimbi engagqwali ivame ukuba nokuphila isikhathi eside ezicelweni eziningi. Ngaphezu kwalokho, isidingo sensimbi engagqwali siphezulu namuhla kunangesikhathi esidlule. Ngakho-ke, naphezu kwesilinganiso esiphezulu sokusetshenziswa kabusha kwensimbi engagqwali, impilo yamanje yensimbi engagqwali emapayipini ayanele ukuhlangabezana nezidingo zokukhiqiza zanamuhla. Lona umbuzo omuhle kakhulu.
Insimbi engagqwali eqhubekayo
Ngaphezu kokuba nomlando oqinisekisiwe wokusetshenziswa kabusha okuhle kanye namazinga okubuyiselwa ekupheleni kokuphila, insimbi engagqwali ihlangabezana nenye imfuneko ebalulekile yezinto ezihlala isikhathi eside. Uma kukhethwa insimbi engagqwali efanele ukuze ivumelane nezimo ezigqwali zemvelo, insimbi engagqwali ivame ukuhlangabezana nezidingo zephrojekthi zesikhathi sonke. Ngenkathi ezinye izinto zingase zilahlekelwe ukusebenza kwazo ngokuhamba kwesikhathi, insimbi engagqwali ingagcina ukusebenza nokubukeka isikhathi eside. I-Empire State Building (1931) iyisibonelo esihle sokusebenza kahle kwesikhathi eside kanye nokusebenza kahle kwezindleko kokwakhiwa kwensimbi engagqwali. Isakhiwo sibhekane nokungcola okukhulu ezimweni eziningi, ngemiphumela yokuhlanza ephansi kakhulu, kodwa insimbi engagqwali isabhekwa njengesesimweni esihle[iii].
Insimbi engagqwali – ukukhetha okusimeme futhi okonga imali
Okujabulisa kakhulu ukuthi ukucabangela ezinye zezici ezifanayo ezenza insimbi engagqwali ibe ukukhetha kwemvelo nakho kungenza kube ukukhetha okuhle kwezomnotho, ikakhulukazi uma ucabangela izindleko zokuphila kwephrojekthi. Njengoba kushiwo ngaphambili, imiklamo yensimbi engagqwali ivame ukwandisa impilo yephrojekthi inqobo nje uma insimbi engagqwali efanele ikhethiwe ukuze ihlangabezane nezimo zokugqwala kwesicelo esithile. Lokhu, nakho, kwandisa inani lokuqaliswa uma kuqhathaniswa nezinto ezingenayo impilo ende. Ngaphezu kwalokho, insimbi engagqwali yamaphrojekthi ezimboni inganciphisa izindleko zokugcinwa nokuhlolwa komjikelezo wokuphila ngenkathi inciphisa izindleko zesikhathi sokungasebenzi kokukhiqiza. Endabeni yamaphrojekthi okwakha, insimbi engagqwali efanele ingamelana nezimo ezithile ezinzima futhi iqhubeke nokugcina ubuhle bayo ngokuhamba kwesikhathi. Lokhu kunganciphisa izindleko zokupenda nokuhlanza impilo yonke ezingadingeka uma kuqhathaniswa nezinto ezihlukile. Ngaphezu kwalokho, ukusetshenziswa kwensimbi engagqwali kunegalelo ekuqinisekisweni kwe-LEED futhi kusiza ukukhulisa inani lephrojekthi. Ekugcineni, ekupheleni kokuphila kwephrojekthi, insimbi engagqwali esele inenani eliphezulu le-scrap.
Isikhathi sokuthunyelwe: Mashi-26-2024