Intsimbi engenasici enokusetyenziswa kwakhona nehlala ihleli
Ukususela ekuqalisweni kwayo okokuqala ngo-1915, intsimbi engagqwaliyo ikhethwe kakhulu ukuba isetyenziswe kumashishini ahlukeneyo ngenxa yeempawu zayo ezibalaseleyo zoomatshini kunye nokugqwala. Ngoku, njengoko kugxininiswa ngakumbi ekukhetheni izixhobo ezizinzileyo, intsimbi engagqwaliyo ifumana ukuqatshelwa okukhulu ngenxa yeempawu zayo ezibalaseleyo zokusingqongileyo. Intsimbi engagqwaliyo inokuphinda isetyenziswe ngokupheleleyo kwaye idla ngokuhlangabezana neemfuno zobomi beprojekthi enamazinga amahle okubuyisela ubomi. Ukongeza, kubalulekile ukuqaphela ukuba nangona kukho ukhetho olunzima olumele lwenziwe phakathi kokusebenzisa isisombululo esiluhlaza kunye nokusebenzisa isisombululo esingabizi kakhulu, izisombululo zentsimbi engagqwaliyo zihlala zibonelela ngokunethezeka kwazo zombini.
Intsimbi engagqwali enokusetyenziswa kwakhona
Intsimbi engagqwaliyo inokuphinda isetyenziswe ngokupheleleyo kwaye ayizukuwohloka. Inkqubo yokuphinda isetyenziswe intsimbi engagqwaliyo iyafana nokuyivelisa. Ukongeza, intsimbi engagqwaliyo yenziwe ngezinto ezininzi ezikrwada, kubandakanya intsimbi, i-nickel, i-chromium kunye ne-molybdenum, kwaye ezi zinto zifunwa kakhulu. Zonke ezi zinto zidibene zenza ukuphinda isetyenziswe intsimbi engagqwaliyo kube yexabiso eliphantsi kakhulu kwaye ngaloo ndlela kukhokelele kumanani aphezulu kakhulu okuphinda isetyenziswe. Uphando lwakutshanje olwenziwe yi-International Stainless Steel Forum (ISSF) lubonisa ukuba malunga ne-92% yentsimbi engagqwaliyo esetyenziswa kwizakhiwo, ekwakheni nakwizicelo zokwakha kwihlabathi liphela iyaphinda ithathwe kwaye isetyenziswe kwakhona ekupheleni kwenkonzo. [1]
Ngowama-2002, iForam yeNtsimbi Engagqwaliyo yeHlabathi iqikelele ukuba umxholo oqhelekileyo ophinda usetyenziswe wentsimbi engagqwaliyo umalunga nama-60%. Kwezinye iimeko, oku kuphezulu. I-Specialty Steel Industries of North America (SSINA) ithi intsimbi engagqwaliyo engama-300 eveliswa eMntla Melika inomxholo ophinda usetyenziswe emva kokuthengwa we-75% ukuya kuma-85%. [2] Nangona la manani ebalasele, kubalulekile ukuqaphela ukuba ayingonobangela wokuba iphezulu. Intsimbi engagqwaliyo idla ngokuba nobomi obude kwizicelo ezininzi. Ukongeza, imfuno yentsimbi engagqwaliyo iphezulu namhlanje kunangaphambili. Ke ngoko, nangona izinga eliphezulu lokuphinda usetyenziswe kwentsimbi engagqwaliyo, ubomi bangoku bentsimbi engagqwaliyo kwimibhobho alwanelanga ukuhlangabezana neemfuno zemveliso zanamhlanje. Lo ngumbuzo olungileyo kakhulu.
Isinyithi esingenasici esizinzileyo
Ukongeza ekubeni nerekhodi eliqinisekisiweyo lokukwazi ukuphinda kusetyenziswe kwakhona kunye namazinga okubuyela esiphelweni sobomi, intsimbi engagqwaliyo ihlangabezana nomnye umlinganiselo obalulekileyo wezixhobo ezizinzileyo. Ukuba intsimbi engagqwaliyo efanelekileyo ikhethiwe ukuze ihambelane neemeko zokugqwala kokusingqongileyo, intsimbi engagqwaliyo idla ngokuhlangabezana neemfuno zobomi beprojekthi. Ngelixa ezinye izinto zinokulahlekelwa kukusebenza kwazo ngokuhamba kwexesha, intsimbi engagqwaliyo inokugcina ukusebenza kunye nokubonakala ixesha elide. Isakhiwo i-Empire State (1931) ngumzekelo omhle wokusebenza okuphezulu kwexesha elide kunye nokusebenza kakuhle kweendleko zokwakhiwa kwentsimbi engagqwaliyo. Esi sakhiwo siye safumana ungcoliseko olukhulu kwiimeko ezininzi, kunye neziphumo zokucoca eziphantsi kakhulu, kodwa intsimbi engagqwaliyo isathathwa njengekwimeko entle[iii].
Intsimbi engagqwaliyo – ukhetho oluzinzileyo nolunoqoqosho
Okuvuyisayo ngakumbi kukuba ukuqwalasela ezinye zezinto ezifanayo ezenza intsimbi engagqwaliyo ibe lukhetho lokusingqongileyo kunokuyenza ibe lukhetho oluhle kakhulu kwezoqoqosho, ingakumbi xa kuqwalaselwa iindleko zobomi beprojekthi. Njengoko bekutshiwo ngaphambili, uyilo lwentsimbi engagqwaliyo lunokwandisa ubomi beprojekthi logama nje intsimbi engagqwaliyo efanelekileyo ikhethiwe ukuhlangabezana neemeko zokugqwala kwesicelo esithile. Oku, kwandisa ixabiso lokuphunyezwa xa kuthelekiswa nezixhobo ezingenabomi bude. Ukongeza, intsimbi engagqwaliyo kwiprojekthi zoshishino inokunciphisa iindleko zokugcinwa kunye nokuhlolwa komjikelo wobomi ngelixa inciphisa iindleko zokungasebenzi kwemveliso. Kwimeko yeeprojekthi zokwakha, intsimbi engagqwaliyo efanelekileyo inokumelana nezinye iimeko ezinzima kwaye igcine ubuhle bayo ngokuhamba kwexesha. Oku kunokunciphisa iindleko zokupenda kunye nokucoca ubomi bonke ezinokufuneka xa kuthelekiswa nezinye izinto. Ukongeza, ukusetyenziswa kwentsimbi engagqwaliyo kuncedisa kwisiqinisekiso se-LEED kwaye kunceda ukwandisa ixabiso leprojekthi. Ekugqibeleni, ekupheleni kobomi beprojekthi, intsimbi engagqwali eseleyo inexabiso eliphezulu le-scrap.
Ixesha leposi: Matshi-26-2024