Ngelixa kuthelekiswa ukomelela kunye nokuqina kwesinyithi, i-titanium kunye nentsimbi zivela njengezibini eziphambili ezikhuphisanayo, nganye ineseti eyodwa yeempawu kunye nokusetyenziswa okunokwenzeka. Ezi ntsimbi zilawula kakhulu ishishini langoku-ukusuka kwinqwelomoya ukuya kulwakhiwo lwezakhiwo. Noko ke, ngaba ngokwenene i-titanium yomelele kunentsimbi? Le bhlog izama ukuhlalutya iintsimbi ezimbini, iimpawu zazo, isakhiwo se-molecular, kunye nemigangatho yokusebenza, ukufumana impendulo kuyo. Ngokuphonononga iimpawu zoomatshini malunga namandla okuqina, ukuxinana, ukuxhathisa umhlwa, njl.njl., sinokufumana ukuba yeyiphi kwezi zimbini ehambelana nebhili yesicelo esinye kunye neshishini. Yiza nathi kolu hambo sijonga isayensi emva kwezi zixhobo zimbini zibalaseleyo.
Intshayelelo yeMetal Strength
Yintoni Echaza Amandla Entsimbi?
Ngokuqhelekileyo, amandla esinyithi aphenjelelwa ngamandla esinyithi ukumelana nemikhosi ngaphandle kokuguqulwa okanye ukungaphumeleli. Ezinye iipropathi zoomatshini zijongwa ukumisela amandla: amandla okuqina, amandla oxinzelelo, kunye nokomelela kwesivuno. Amandla e-tensile lolona xinzelelo luphezulu lwezinto ezinokunyamezela xa zolulelwa okanye zitsalwa. Amandla acinezelayo abonakalisa ukukwazi kwesixhobo ukuxhathisa amandla azama ukuyicinezela. Amandla esivuno, ngokuchaseneyo, aya kuvavanya uxinzelelo apho intsimbi ikhubaza ngokusisigxina. Ezi zakhiwo ziyimfuneko ekuhloleni ukuziphatha kwesinyithi phantsi kweemeko eziphathekayo.
Enye into ebaluleke kakhulu echaphazela ukomelela kwesinyithi kukwakheka kwazo kancinci. Nokuba lulungiselelo lweeathom, ubungakanani beenkozo, okanye ubukho okanye ukungabikho kwezinto ezixubeneyo, zonke ezi ziguquguqukayo zinefuthe kwindlela iintsimbi eziziphatha ngayo phantsi koxinzelelo. Umzekelo osisiseko omawuqwalaselwe bubukhulu obuziinkozo obuncinci, obusebenza ngokubanzi ukwandisa amandla ngokuqiniswa komda weenkozo. Ngakolunye uhlangothi, ukongezwa kwezinto ezifanelekileyo ze-alloying, ezifana nekhabhoni kwi-steels, kwandisa iipropathi zomatshini ngokuguqula ilungiselelo le-athomu ukufezekisa iipropati ezifunwayo, umzekelo, ubunzima kunye nokuguquguquka. Obu buchule bokwenza ngokwezifiso buya kudala isamente yokwahluka okubanzi kokusetyenziswa kwesinyithi kumashishini.
Izinto zokusingqongileyo nazo zihamba indlela ende ekuchazeni amandla esinyithi. Ubume bobume besinyithi bunokutshintshwa ngokuhamba kwexesha ngamaqondo obushushu, ukufuma, kunye nokuvezwa kweekhemikhali. Ubushushu obuphezulu busebenza ukwenza buthathaka isinyithi ngokukhawulezisa iinkqubo ezirhubuluzayo, oko kukuthi, ukuguquka okucothayo phantsi koxinzelelo. Indawo engcolisayo inokubangela ukuncipha ngakumbi kumandla ezinto eziphathekayo ngenxa ye-oxidation okanye ukusabela kweekhemikhali. Ngoko ke, ekukhetheni isinyithi kwisicelo esithile, kufuneka kuqwalaselwe kuphela kwiimpawu zayo zomatshini kodwa kunye nendlela eya kuziphatha ngayo phantsi kweemeko zokusingqongileyo ezinikezelweyo.
Ukubaluleka kwamandla kubuNjineli
Amandla yipropathi eyimfuneko eqwalaselwa kuyilo lobunjineli kunye nokukhethwa kwezixhobo kuba imisela ukukwazi kwesakhiwo ukumelana namandla asetyenzisiweyo ngaphandle kokusilela. Isitayela samandla esicatshangelwayo sixhomekeke kubume besicelo kunye neentlobo zamandla angaphandle abandakanyekayo. Oku kunokuba ngamandla okuqina, amandla acinezelayo, amandla okucheba, amandla okugoba, kunye namandla empembelelo. Oku kulandelayo yinkcazo eneenkcukacha nganye:
- Amandla Amandla: Ngokusisiseko, la mandla ajongene nokuchasana kwesixhobo sokutsalwa ngaphandle ngamandla anamandla. Umzekelo, intsimbi eqinileyo emalunga ne-400-800 MPa ithathwa njengesixhobo samandla aphezulu kakhulu kwaye isetyenziswa ngokubanzi kwizicelo zezakhiwo ezinje ngeebhulorho kunye nezakhiwo.
- Amandla acinezelayo: La mandla abhekisa kwisakhono semathiriyeli ukuxhathisa ukusilela okanye ukugquma xa iphantsi kwamandla oxinzelelo. Umzekelo, ikhonkrithi enamandla acinezelayo angama-20 eMPa kwizakhiwo zokuhlala ukuya kuthi ga kwi-40 MPa yezakhiwo ezisebenza ngokuphezulu.
- Amandla e-Shear: Le propati ibaluleke kakhulu idinga ukuqinisekiswa ukuxhathisa imikhosi yokutyibilika esebenza ngokuhambelana nomgangatho wezinto eziphathekayo kwiifasteners kunye namalungu. Umzekelo, iialloyi ze-aluminiyam zibonisa amandla okucheba ukusuka kwi-100 ukuya kwi-200 MPa, ngokuxhomekeke kwizinto ezixutywayo ezikhoyo.
- Amandla eTorsional: Le propati ilinganisa ukuxhathisa ngokuchasene namandla ajijayo. Kubalulekile kwii-shafts kunye ne-gear systems, i-shafts yensimbi ikhethwa ngokomzekelo ngenxa yokukwazi ukuxhathisa imikhosi ephezulu ye-torsional ngaphandle kokuguqulwa okubonakalayo.
- Amandla empembelelo: Ngamanye amaxesha kubhekiselwa kubo njengokuqina, oku kulinganisa ukukwazi kwemathiriyeli ukufunxa amandla kunye nokuxhathisa ukwaphuka ngequbuliso ngenxa yempembelelo. Izinto ezinje ngeglasi epholileyo kunye neepolima ezinempembelelo ephezulu zisetyenziswa kakhulu kwizicelo zokhuseleko, ngenxa yamandla azo anempembelelo ephezulu.
Nganye yemilinganiselo yamandla omatshini kufuneka ibe yinxalenye ebalulekileyo yenkqubo yoyilo, ekubeni inqaku ngalinye linentsingiselo eyahlukileyo yokukhethwa kwezinto ezixhomekeke kukhuseleko, umsebenzi, kunye nokuqina kwiindawo ezahlukeneyo zokusebenza.
Isishwankathelo seTitanium kunye nentsimbi
I-Titanium kunye ne-iron zintsimbi ezimbini ezisetyenziswa ngokuqhelekileyo, nganye inenkcazelo ebalulekileyo kwinani lemisebenzi yoshishino neyeteknoloji. I-Titanium yintsimbi ekhaphukhaphu, kunye nendalo yayo umlinganiselo wamandla-kubunzima, ukumelana nokugqwala, kunye nokuchasana nobushushu obugqithisileyo, inika. Ngenxa yezi zinto, i-titanium isetyenziswa kwimizi-mveliso ye-aerospace, yezonyango neyolwandle. I-iron, ngokubanzi, iyaxatyiswa ngobuninzi bayo, ixabiso eliphantsi, kunye nokusetyenziswa kweenjongo ezininzi. Ithathwa njengeyona nto iphambili ekubunjweni kwentsimbi, apho inazo zonke izicelo zokwakha, iimoto kunye neziseko.
Ukuxhomekeka kulwakhiwo lweathom kunye nokuziphatha kokudibanisa kwezi zinyithi, zonke iimpawu ezingundoqo ziyaboniswa. I-Titanium yintsimbi yotshintsho, kodwa inoxinano oluphantsi nokomelela okukhulu. Ithanda ukungagqwali, ngakumbi kwiatmosphere yaselwandle, kuba yenza ifilim yeoksidi ekhuselayo ekuvezweni emoyeni. Ngakolunye uhlangothi, isinyithi sithandwa kwi-oxidation kunye nokugqwala phambi kokufuma, nangona ngokusebenzisa i-alloying kunye nekhabhoni kunye nezinye izinto, iikhompawundi ezifana nensimbi engenasici zinokuphuculwa kakhulu kwiipropati zabo zomatshini kunye neekhemikhali.
Ukusuka kwimbono yobunjineli, ukukhethwa kwezinto eziphathekayo phakathi kwe-titanium kunye nentsimbi kuxhomekeke kwiinkcukacha ezithile zesicelo. I-Titanium ifumana indawo yayo yezicelo apho ukugcina ubunzima ngaphandle kokunciphisa amandla kubaluleke kakhulu, okanye ngokucacileyo kwiindawo apho ukuhambelana okukhulu kwe-biocompatibility kuyimfuneko, njengokufakelwa kotyando. Intsimbi kunye nealloys zayo ziza kwezazo xa ukuqina kwinqanaba lemizi-mveliso kunye neendleko ziyingqwalasela ephambili. Zombini ezi zinyithi zixoxa umbandela wonxibelelwano phakathi kwenzululwazi yezinto eziphathekayo kunye neengqwalasela zoyilo olusebenzayo, nto leyo eyenza ukuba kubaluleke kakhulu ukulungelelanisa iimpawu zemathiriyeli kunye neemfuno zokusebenza.
I-Titanium vs Intsimbi: Uthelekiso lwamandla
Iimpawu ezisisiseko zeTitanium
I-Titanium yintsimbi yoguquko eyaziwayo ngokomelela kwayo ukuya kubunzima obuphezulu kunye nokuchasa ukubola okudityaniswa nokuba yi-bioinert. Kuyinyaniso ukuba, ukuba noxinzelelo olusondele kwi-4.5 g/cm³, i-titanium ikhaphukhaphu kakhulu xa ithelekiswa nezinye iintsimbi ezininzi, ezinje ngeentsimbi, kwaye oku kuvumela ukusetyenziswa kwayo kwiindawo apho ukuncitshiswa kobunzima kubaluleke kakhulu kumandla ento. Amandla e-tensile avela kwi-430 MPa ukuya kwi-1,400 MPa esekelwe kwibakala, ngelixa igcina i-modulus ephantsi ye-elasticity malunga ne-110 GPa, eyenza ibe bhetyebhetye xa iphantsi koxinzelelo.
Ukumelana nokubola kuthathwa njengeyona nto iphambili ye-titanium, ethi iphuhlise umphezulu we-oxide obhityileyo (i-titanium dioksidi, i-TiO₂) xa usesichengeni seoksijini esebenza njengomqobo ekumdleni. Ngokukodwa ifaneleke kakuhle kwi-marine, i-aerospace, kunye nezicelo zonyango, apho ubukho bomswakama kunye neekhemikhali buxhaphakileyo. Njengoko i-titanium ingeyotyhefu kwaye ihambelana ne-biocompatible ngokupheleleyo, isetyenziselwa ukufakelwa, iprosthetics, kunye nezinye izixhobo zonyango ezifuna ukuhambelana kwezicubu kunye nokuqina. Uluhlu lwalo lobushushu bokusetyenziswa, ukuya kuthi ga kwi-600 ° C, longeza ngakumbi kwixabiso layo malunga nezicelo eziphezulu.
Xa kuthelekiswa nezinto zemveli ezifana nentsimbi okanye i-aluminiyam, i-titanium ihlala iqhayisa ngokukwazi ukubonisa iingenelo ezininzi ngakumbi xa iindawo ezibaluleke kakhulu ziqwalaselwa malunga nokufuna iipropathi zobugcisa eziphambili kunye nokukwazi ukumelana nokutshintsha kokusingqongileyo. Kwizakhono ezahlukeneyo kunye nezinye izixhobo zangoku, ivula i-horizons entsha yezinto ezintsha ezinje ngoshicilelo lwe-3D kunye nemixube edibeneyo.
Iimpawu ezisisiseko zentsimbi
Intsimbi ifuziselwa nguFe kwaye inenombolo ye-athomu engu-26. Ekubeni ubukhulu becala ininzi kwaye iyindalo esisiseko, yinto eyaziwayo yoqweqwe loMhlaba. Ineempawu zokuqina kokuqina, ukunyibilika, ukuqhutywa kobushushu, kunye nokuqhutywa kombane. Intsimbi ikhona ikakhulu kwiifom ezimbini zekristale-BCC kunye neFCC, ihlalutya ukuba yeyiphi ipropathi yomatshini phantsi kobushushu obuhlukeneyo kunye neemeko zento inokuqondwa.
Intsimbi esulungekileyo inoxinano olumalunga ne-7.87 g/cm³ kwaye inyibilika kwi-1538°C (2800°F); ke, kwizicelo zobushushu obuphezulu, ingasetyenziswa. Kodwa idinga uyilo ukuze idityaniswe ukonyuka kwamandla omatshini, njengoko intsimbi esulungekileyo ithambile kwaye i-ductile. Izinto ze-alloy ezifana nekhabhoni, imanganese, kunye nechromium zenza izinto zibe nzima, zingagugi, kwaye zingagugi, ngenxa yoko zenza intsimbi.
Njengemathiriyeli yamagnetic, ifumana ukusetyenziswa kwayo kwizinto ezininzi zombane kunye neshishini. Isabela ngokukhawuleza ngokufuma kunye neoksijini ukuze yenze i-iron oxides (i-iron rust eyaziwayo), eyona nto yokuqala ekufuneka iqwalaselwe ngexesha lokugcinwa kunye nokusetyenziswa kwentsimbi. Ingqwalasela esisiseko ibandakanya ixabiso elifikelelekayo, ukufumaneka ngokulungeleyo, kunye nokuhambelana neendlela ezahlukeneyo zemveliso; kungoko, intsimbi isenemfuno enkulu kumashishini okwakha, oomatshini, oomatshini kunye nemizi-mveliso. Kutshanje, izazinzulu ngezinto zisebenzisa intsimbi kwiinkalo ezintsha ezinjengoyilo lwealloys yesiko kunye nokuveliswa okongeziweyo.
Ukuthelekisa Amandla Okuqina
Amandla okuqina e-titanium aphakathi kwe-430 MPa kunye ne-1,400 MPa, ngelixa intsimbi, iyahluka ngokwe-alloy yayo, ngokuqhelekileyo i-400 ukuya kwi-800 MPa yeentsimbi.
Iindidi ezahlukeneyo zamandla kwiintsimbi
Ukuqonda i-Tensile kunye namandla oxinzelelo
Kuvavanyo lwe-tensile, konke okwenziwayo kukutsalwa komzekelo ukusuka kwiziphelo zombini kude kube kukungaphumeleli, kwaye ke ukulinganisa umthwalo othwelwe ngumzekelo kweli nqanaba. Amandla okuqina angamiselwa kwi-megapascals (MPa) kwaye amandla oxinzelelo kwindawo yeyunithi kwindawo yokuphuka. Isixhobo sokuvavanya i-tensile silayishwa nge-axially ngokuchasene nomzekelo de wophuke. Amandla e-tensile yenye yezona zinto ziqhelekileyo zithathelwa ingqalelo kwizicelo eziphezulu zokusebenza. I-Titanium, umzekelo, inamandla okuqina ukusuka kwi-430 MPa ukuya kwi-1,400 MPa ngokuxhomekeke kwi-alloy eqwalaselwayo.
Ngokuchasene noko, amandla acinezelayo anokuqondwa njengokuxhathisa kwesixhobo xa uxinzelelo lufakwa kuyo ngenjongo yokuyityumza. Le propati ibaluleke kakhulu kwizinto ezisetyenziselwa ukwakha iziseko, iikholomu, kunye nezakhiwo zokuthwala imithwalo phantsi kwemikhosi yoxinzelelo. Uninzi lwezixhobo zinamandla amakhulu oxinzelelo kunamandla okuqina, kodwa i-juxtaposition iyahluka ngemathiriyeli nganye. Umzekelo, ikhonkrithi inamandla acinezelayo aphezulu kodwa inamandla asezantsi, nto leyo ethetha ukuba kufuneka iqiniswe ukuze ikwazi ukuphatha kakuhle imithwalo.
Ulwazi lwe-tensile kunye namandla oxinzelelo luvumela iinjineli ukuba zenze ukhetho olunolwazi ekukhetheni izinto eziphathekayo ukunyusa ukusebenza kunye nokhuseleko kwizicelo ezinikiweyo. Ulwazi oluchanekileyo, oluxhaswa yidatha kunye nohlalutyo lukhokelela ekuthembekeni okuqinisekisiweyo kwizakhiwo ezibalulekileyo kunye nezinto ezintsha.
Amandla empembelelo kunye nokufaneleka kwawo
Amandla empembelelo bubuchule bemathiriyeli ukumelana nomthwalo okhawulezileyo kunye nonyanzelwayo okanye ukothuka ngaphandle kokwaphuka. Le propati iyimfuneko apho impembelelo enamandla okanye impembelelo ephezulu kulindeleke ukuba isebenze, iqinisekisa imfezeko yesakhiwo kunye nokuphepha ukusilela kwintlekele. Ubunjineli kunye nesayensi yezinto eziphathekayo ziqwalasela amandla empembelelo njengeparameter ebalulekileyo ngelixa kuyilwa amacandelo okuvelisa, ukwakhiwa, iimoto, kunye nemizi-mveliso ye-aerospace. Iingqwalasela eziphambili kunye neenyaniso ezinxulumene namandla empembelelo zezi:
- Amaxabiso oVavanyo lweMpembelelo ye-Izod: Olu vavanyo lujolise ekulinganiseni amandla athatyathwe yimathiriyeli ukuphuka phantsi kweempembelelo. Ngokuqhelekileyo, into efana nentsimbi iya kubonisa amaxabiso amakhulu ngokubhekiselele kwi-brittleness yayo xa kuthelekiswa, umzekelo, i-ceramic.
- Iziphumo zoVavanyo lweCharpy Impact: Uvavanyo lwempembelelo ye-charpy lulinganisa ukukwazi kwemathiriyeli ukuchasa iimpembelelo zequbuliso kumzekelo ophawulweyo, ongqina ukuqina kwemathiriyeli kunye namandla ayo okufunxa amandla abekwe kumthwalo wangaphandle.
- Ukuxhomekeka kwiqondo lobushushu: Amandla empembelelo yezixhobo ezininzi, iipolymers zibandakanyiwe, zihamba nokuguqulwa kwamaqondo okushisa ahlukeneyo. Iimathiriyeli ziba brittle kwaye ziphulukane namandla azo okufunxa amandla njengoko amaqondo obushushu ehla.
- Impembelelo yoLwakhiwo lweeNkozo: I-metal's microstructure-grain size kunye nokuqhelaniswa nokutya okuziinkozo-kuphembelela ukuxhathisa kwayo kwimpembelelo. Iintsimbi ezicolekileyo zidla ngokuba nokuqina ngakumbi kunoogxa bazo abarhabaxa.
- Ubuncinci beMathiriyeli kunye nokuqina: Iimathiriyeli ezingqukuva ezifana nealluminiyam zinika amandla empembelelo elungileyo, ngelixa imathiriyeli enqabileyo isilela ngokukhawuleza xa iphantsi kwempembelelo yempembelelo ephezulu.
Xa ezi zinto ziqondwa, ziba ngamanqaku agxininisekileyo ekukhetheni izixhobo ezinezisombululo zobunjineli eziza kugxininisa ukhuseleko kunye nokusebenza kwiimeko ezinempembelelo ephezulu.
Ukukhathala Amandla kunye nokuqina
Amandla okudinwa lelinye igama lokukwazi kwesixhobo ukuxhathisa usetyenziso lwebhayisekile okanye oluphindaphindiweyo lomthwalo ongaphantsi kwamandla ayo okugqibela ngaphandle kokunikezela. Lo mhlaba uba ngowona ubalulekileyo kumacandelo aphantsi koxinzelelo oluguquguqukayo ixesha elide, elifana nezakhiwo zebhulorho, izinto zenqwelomoya, okanye iinxalenye zemoto. Amaxesha amaninzi, izinto ezinje ngentsimbi ezinokuqina okuphezulu kunye ne-titanium alloys zikhethwa ukumelana nokwahluka kolu xinzelelo luphindaphindayo kuba zinika ukuxhathisa okuphezulu kakhulu. Ngokuqhelekileyo, amandla okukhathala ahlolwe ngokwemigaqo ye-SN (Stress-Number of cycles) ijika, ehambelana nenani lemijikelo yokungaphumeleli kwinqanaba elinikeziweyo loxinzelelo.
Ukuqina, kwelinye icala, kujongana nobuchule bemathiriyeli bokumelana nokuguga, ukubola, kunye nokonakala koomatshini ngexesha, kusetyenziswa kwiimeko zokusebenza. Izinto ezidlalwa apha zikwakulayishwa kwebhayisekile, kodwa ezinye izinto ezifana nokuvezwa kokusingqongileyo kunye ne-abrasion zingena kwibala layo. Ke ngoko, ipholima inokuba namandla aphantsi okudinwa xa kuthelekiswa neentsimbi; nangona kunjalo, ukuxhathisa kwayo okuphezulu kakhulu kwi-corrosion kuyenza ilungele izicelo apho ukuvezwa kokufuma okanye iikhemikhali zikhona. I-Inductively, ukhetho olusekelwe kwisigxina sezinto eziphathekayo lunokuqwalasela ukhuseleko olusekelwe kwipropati ebonakalayo, ngelixa ipropati nganye inokuthathelwa ingqalelo ngokwahlukileyo, kunye nayo nayiphi na imilinganiselo yokukhusela yangaphandle enokuthi isetyenziswe kwizinto eziphathekayo, ezifana neepeyinti okanye iingubo, okanye unyango.
Xa umntu ethatha amandla okudinwa kunye nonyamezelo njengento enye, mva nje ifilosofi yokudibanisa okanye indlela epheleleyo ibizwa ngokuba kukukhethwa kwezinto eziphathekayo. Le ndlela iqwalasela iimeko zokusetyenziswa kwento, njengeentlobo zemithwalo, izinto zokusingqongileyo, kunye nexesha elilindelekileyo lokusebenza kwemveliso. Ngaloo ndlela, injineli inokuzama ukuqinisekisa ukhuseleko, ukuthembeka, kunye nokusebenza kwexesha elide ngokuqwalasela ezi zakhiwo zimbini kwindlela yokuyila.
Ukusetyenziswa kweTitanium kunye nentsimbi kuShishino
I-Titanium kubuNjineli be-Aerospace
I-Titanium isaqhubeka ukudlala eyona ndima ibalulekileyo kubunjineli be-aerospace, izalisekisa iimfuno ezikhethekileyo ezinikwe yona yindalo. Inomlinganiselo ophezulu kakhulu wokomelela ukuya kubunzima ngokobungakanani bayo, kwaye ayinyangeki kakhulu ekumdleni; inokumelana phantse nalo lonke ubushushu obugqithisileyo. Ke ngoko, ifunyenwe ifanelekile kwiindidi ezahlukeneyo zezicelo ze-aerospace. Izicelo ezihlanu eziphambili ze-titanium zibalwe ngezantsi:
- Izixhobo zoLwakhiwo lweenqwelomoya
Iialloyi ze-Titanium zisetyenziswa phantse kuzo zonke izinto zesakhiwo esineempondo zezihlangu kumakhalane ephiko, i-fuselage, kunye negiya lokumisa. Ngenxa yamandla aphezulu okuqina kunye noxinano olusezantsi (malunga ne-4.5 g/cm³), inokunciphisa ubunzima benqwelomoya bubonke kwaye ibonelele ngokusebenza okuphezulu koomatshini. Oku kuncitshiswa kobunzima kuqinisekisa ukusebenza kakuhle kwamafutha kunye nesibonelelo somthwalo ophezulu. Ngenxa yoko, iinqwelo-moya zanamhlanje zisebenzisa i-titanium emalunga ne-15 ekhulwini kulwakhiwo; umzekelo yiBoeing 787 Dreamliner. - Amacandelo eNjini yeJet
I-Titanium igcina amandla kunye nokuqina kwayo kumaqondo obushushu aphezulu, iyenza iyimfuneko kumacandelo afana neeblade zefeni, ii-casings, kunye necompressor disks kwii-jet engines. Ezi zixhobo zenziwe kwi-alloy ye-titanium ye-big-grade ye-titanium i-Ti-6Al-4V (i-6% ye-aluminium, i-4% ye-vanadium) yokushisa okuphezulu kunye nokumelana nokudinwa kakuhle. Iindawo ze-Titanium zinokusebenza kumaqondo obushushu angaphezu kwama-600°C ngeli lixa zigcine imfezeko yolwakhiwo lwazo. - Amacandelo e-Spacecraft
Ukumelana nomhlwa kunye nokomelela kwayo kuyenza ibe luncedo kulwakhiwo lweziphekepheke. Isetyenziselwa ukuqaliswa kwezakhiwo zezithuthi, iinqanawa zoxinzelelo, kunye nezakhelo zesathelayithi zokuqinisekisa ukuqina kunye nokusebenza kwindawo. Umzekelo, i-titanium isetyenziswa kumacandelo aliqela kwi-NASA's Mars rovers ukugcina ukuguquguquka kobushushu phakathi kwe-153°C kunye ne-20°C. - Izibophelelo kunye neziqhagamshelo
Izibophelelo ze-Titanium ezihlangabezana nemigangatho ye-aerospace zisetyenziselwa ukukhusela iindawo ezahlukeneyo zenqwelomoya. Ezi zibophelelo zinegalelo elikhulu ekongeni ubunzima xa kuthelekiswa neziqhoboshi zentsimbi, kodwa zandisa amandla afanayo. Ngaphaya koko, i-titanium iyaxhathisa ukubola, ngaloo ndlela iqinisekisa ubomi bayo obude kunye nokunciphisa ukugcinwa kwemo engqongileyo evezwe kumanzi etyuwa okanye kwimichiza. - IiHydraulic Systems
Iityhubhu ze-Titanium kunye namacandelo kwinkqubo ye-hydraulic iqinisekisa amandla kunye nokuqina xa ejongene noxinzelelo oluphezulu kunye nokutshintsha kweqondo lokushisa okuqhelekileyo kwi-aviation. I-Titanium corrode kwaye inxibe kancinci malunga nezinto ezifana ne-aluminium, oku kuthetha ukuba iya kusebenza ngokuthembekileyo kwaye ibe nobomi obude benkonzo, ngakumbi kwiinqwelomoya zomkhosi kunye nezorhwebo ezisebenza phantsi kweemeko ezinzima.
Oku kusetyenziswa kungqina ukuba i-titanium sisixhobo esiyimfuneko kubunjineli be-aerospace, kunye netekhnoloji ye-titanium alloy ehlala iguquka, amandla ayo kunye neendawo zokusebenza zihlala zisanda.
I-ayini kuLwakhiwo nakwiMveliso
Ngenxa yamandla ayo amakhulu, ukuguquguquka, kunye nokufumaneka kwayo, i-iron ime njengenye yezinto ezibalaseleyo ekwakhiweni nasekuveliseni. Amashishini abalaseleyo abona usetyenziso oluphambili lwentsimbi, ukusukela kulwakhiwo olukhulu, olukhulu olufana nezakhelo zokwakha ukuya kwezona ndawo zincinci zegiya. Ezi zilandelayo ziinkcazo ezineenkcukacha zosetyenziso lwentsimbi kulwakhiwo nakwimveliso:
- Intsimbi yoLwakhiwo lweZakhiwo: I-ayini yeyona nto ingundoqo yentsimbi yolwakhiwo, kwaye imisebenzi yokwakha ebandakanya izakhiwo eziphakamileyo, iibhulorho, okanye izakhiwo zokuhlala ziyayiqesha. Ngenxa yokukwazi ukumelana nomthwalo onzima, insimbi ifaneleka ngokufanelekileyo ukwenza isakhelo samathambo ezakhiwo kunye nokuxhasa isakhiwo ngexesha lenkonzo.
- IiBar zoQiniso (IiRebha): Imivalo yokuqinisa, ininzi eyenziwe ngentsimbi enentsimbi, ifakwe kwikhonkrithi eninzi kumandla ayo obunzima. Le konkrithi, inamandla okuqina kwekonkile, isesona sithako sifanelekileyo kwikonkile esetyenziselwa ukwakha oohola beendlela, itonela namadama.
- Izixhobo kunye noomatshini: Imizi-mveliso yeayini yenza izixhobo zentsimbi kunye nezixhobo. Ukusuka kwizixhobo zokusika ukuya kumatshini onzima woshishino, uphawu oluqhelekileyo lwentsimbi kukuqina kwayo kunye nokulula komatshini ukuhambelana nokusingqongileyo kwimveliso.
- Ukwenziwa kweMoto kunye neZixhobo eziNzima: Intsimbi yokuphosa kunye nentsimbi isetyenziswe ngokuqhelekileyo ekwenzeni iimoto kunye nezixhobo ezinzima. Intsimbi yentsimbi yaziwa ngokuxhathisa kwayo kakhulu ekusetyenzisweni kwiibhloko zenjini kunye nentsimbi isetyenziswa apho amandla kunye ne-ductility kufuneka ilungelelaniswe kwiigiya kunye ne-chassis.
- Imibhobho kunye neNkqubo yeMibhobho: Imibhobho yentsimbi erhuqwayo ifumene ukusetyenziswa ngokubanzi kunikezelo lwamanzi kunye neenkqubo zogutyulo. Le mibhobho ikhethwa kwiziseko ezingundoqo zanamhlanje ngenxa yokumelana nokubola kunye nokumelana noxinzelelo olukhulu.
Isakhono se-ayini sokuphinda sisetyenziswe ngexabiso eliphantsi ngokuyinxenye negalelo ekusetyenzisweni kwayo ngokubanzi, ukuyixhasa ngakumbi ukuba ibe sisixhobo esingundoqo esisetyenziswa kuwo wonke ushishino lolwakhiwo nolwemveliso.
I-High-Strength Alloys kunye nokusetyenziswa kwazo
Izinto zokomelela okuphezulu zizinto zobunjineli ezibonelela ngeempawu eziphuculweyo kumandla okuqina, ukuxhathisa, ukuxhathisa i-abrasion, njl.njl. I-alloys yamandla aphezulu iya kwenziwa kwakhona kwiimeko kunye neemeko zokusebenza apho iintsimbi eziqhelekileyo zingekho.
- Usetyenziso lwe-Aerospace: Emva koko, kunokuthiwa iintlobo ezahlukeneyo ze-aluminium kunye ne-titanium zi-alloys zamandla aphezulu asetyenziswa kwicandelo le-aerospace. Iialloyi ze-Titanium zisetyenziswa ekwenzeni iinxalenye ze-injini yejethi kunye nezakhelo zesakhiwo ngenxa yamandla azo aphezulu ukuya kubunzima kunye nokumelana namaqondo obushushu aphezulu. Intsimbi, kwelinye icala, ifumana ukusetyenziswa kwayo kwiifuselages kunye namaphiko ngenxa yobunzima bayo obulula kunye ne-corrosion-resistance feature.
- Umzi mveliso weemoto: Ukufika kweentsimbi ze-AHSS kwimveliso yeemoto akwanelanga nje ukuguqula uyilo lwesithuthi kodwa nokhuseleko. Ezi ntsimbi zenza ukuba izithuthi zibe khaphukhaphu ezithi ngaloo ndlela zisebenzisa amafutha amancinci kwaye zibe nokuntlitheka. Kutshanje, iialloyi zemagnesium zikwafumana ukuthandwa njengamacandelo e-chassis ekhaphukhaphu.
- Ubunjineli boLwakhiwo noLwakhiwo: I-alloys yensimbi, efana neentsimbi ezicinyiweyo kunye ne- tempered, zisetyenziswa kwisizukulwana samva nje sokwakhiwa kokunyuka okuphezulu, iibhulorho, kunye namaqonga ase-offshore, ngokuyinhloko ngenxa yomthamo wabo wokuthwala umthwalo kunye ne-ductility, okuqinisekisa ukuthembeka okwaneleyo phantsi koxinzelelo oluguquguqukayo kunye ne-static ukudibanisa ukunyaniseka kwesakhiwo.
- Amandla kunye nokuVeliswa koMbane: Ii-superalloys ezisekwe kwi-nickel zifumana usetyenziso olukhulu ekuveliseni amandla, njengeentsimbi ze-iturbine yegesi okanye iiinjini zomphunga. Izixhobo zibonisa ukuzinza okumangalisayo kobushushu obuphezulu, ukuchasana ne-oxidation, kunye namandla omatshini phantsi kobushushu obuphakamileyo ixesha elide, ngaloo ndlela unikezela ukusebenza kakuhle kwimveliso yamandla.
- Imimandla yezonyango kunye neBiomedical: Iialloys ezifana ne-cobalt-chromium kunye ne-titanium zibalulekile kukufakelwa kwezonyango kunye neprosthetics. I-biocompatibility yabo, amandla, kunye nokunganyangeki kwe-corrosion kunikeze ukuqina kunye nokunciphisa impembelelo ye-physiological, kwaye ngoko ke babefanelekile ukuba babekho kumzimba womntu ixesha elide.
Njengoko itekhnoloji yemveliso iguquka, ukusetyenziswa kwe-alloys yamandla aphezulu nako akuyeki ukwanda. Ezi zixhobo zifuzisela ukusetyenziswa kwe-metallurgy ephezulu kunye nobunjineli, ezenza isiseko sezinto ezintsha kwiinkalo ezininzi.
Izinto ezingeloncedo ngeTitanium xa kuthelekiswa nentsimbi
Ukuqwalaselwa kweendleko
Ingxubevange ye-Titanium, ngelixa inamandla amakhulu-kubunzima bomlinganiselo kunye nokumelana nomhlwa, ibiza kakhulu kunesinyithi esiqhelekileyo njengentsimbi kunye nealloys zayo. Iindleko zingabalelwa kwizizathu ezininzi, ukuqala ngokutsalwa kwayo. I-Titanium ivela ikakhulu kwiminerali ekrwada efana ne-ilmenite kunye ne-rutile; nangona kunjalo, i-ores kufuneka ihambe ngeendlela zombane kunye nexesha elide ukuba zisetyenziswe njengesinyithi se-titanium. Enye indlela enjalo yinkqubo yeKroll. Indlela yayo yamanyathelo amaninzi inoxanduva ngokupheleleyo lweendleko zokuvelisa.
Ngaphezu koko, ukucutshungulwa kunye nokwenziwa kwe-titanium kunzima ngakumbi kunezo zentsimbi. Oku kubangelwa ubukhulu becala kwindawo yayo ephezulu yokunyibilika (malunga ne-1,668 ° C okanye i-3,034 ° F) kunye nokusebenza kwayo kwakhona kumaqondo obushushu aphezulu. Iindleko zemveliso zinyuka kunye nemfuneko yezixhobo ezizodwa kunye nokulawulwa okungqongqo kwendalo. Ngokuthelekisa, i-iron ifumaneka ngobuninzi kwaye ifikeleleka ngokulula, iyenza ukuba kutshiphu kakhulu ukuyisetyenza kwaye kungoko ikhethelwe uninzi lwezicelo zemizi-mveliso emikhulu.
Enye into ebalulekileyo ziindleko zomjikelo wobomi. I-Titanium idla ngokuba nobomi obude bokusebenza phantsi kwemekobume erhabaxa ngenxa yokonakala kwayo kunye nokumelana nokudinwa. Sekunjalo, iindleko zokufunyanwa kokuqala kunye nokulungiswa ngokuqhelekileyo zidlula kude iinzuzo zezoqoqosho ezifunyenwe ekusebenziseni isinyithi kwiiprojekthi ezingabizi kakhulu. Kwizicelo zentengiso enkulu, i-titanium, ke ngoko, isetyenziswa kuphela kwimimandla apho ukusebenza okuphezulu kuthethelela utyalo-mali, oko kukuthi, i-aerospace, i-biomedical, kunye nobunjineli baselwandle.
Ukufumaneka kunye nemingeni yeMveliso
Ukuba uthetha ngokunqongophala okanye ukunqongophala kokufumaneka, into ekufuneka iqwalaselwe kukuba i-titanium ikhona kwi-crust of Earth ngobuninzi. Ifumaneka kakhulu njenge-titanium dioxide (TiO₂). Ingxaki ephambili ikhona kwizigaba zokutsalwa kunye nokucocwa. Nangona amagama anjengokutsalwa kunye nokucokisa anokusetyenziswa kwintsimbi nganye, i-titanium inika umahluko omkhulu. Indlela eyinkimbinkimbi ekufuneka isetyenziswe ukwahlula i-titanium kwi-ore yayo, emva koko isinyithi ingasetyenziswa, idinga amandla amaninzi kwaye, ngoko, iyabiza. Ibandakanya indlela ye-Kroll okanye ye-Hunter, apho iikhemikhali ezinobungozi ezifana neklorine kunye ne-magnesium ziphathwa. Ixabiso lemveliso liyenyuka ngenxa yezi nkqubo-ukuya-kwindawo yokwenza imfuno ephezulu yento eninzi yendalo ibe ngumda ekufikelelekeni kwayo.
Ulungiselelo lwekhonkco lonikezelo kunye nolwabiwo lwezibonelelo lubonisa ezinye iingxaki kwimveliso ye-titania. Imisebenzi yokwembiwa kwemigodi kunye nokulungisa ifuna iziseko ezingundoqo kunye notyalo-mali olukhulu; ngaphezu koko, imithetho yokuthotyelwa kokusingqongileyo ingqongqo ngenxa yempembelelo yendalo esingqongileyo yemisebenzi enxulumene nokutsalwa. Ukwenza imeko ibe mandundu, bambalwa abavelisi abakhulu abaza kufunyanwa kwimimandla efana neTshayina, iRussia, neJapan, ukuhambisa ubuthathaka kubo: naluphi na utshintsho kuzinzo lwelizwe nezopolitiko oluchaphazela isakhono sabavelisi lunokuphazamisa amakhonkco onikezelo lwehlabathi kwaye ngoko ke unyuse iindleko.
Omnye umba ophambili onxulumene nesidingo solwazi lobugcisa kunye nezixhobo ezizodwa ezisetyenziselwa ukwenza kunye nokusetyenzwa kwe-titanium kwizicelo ezahlukeneyo. Esi sinyithi sinobushushu obuphezulu bokunyibilika obuyi-1,668 ° C, kunye nomthamo ophantsi wokuqhuba ubushushu, ngoko ke ukuba umgama oziikhilomitha ezingama-2000 ukusuka kuTom kwisibhakabhaka sakhe esigcwele ikholeji kwadibanisa amava akhe ekufundiseni umatshini kunye nokwenza i-titanium kunye neendlela zokuyila, ngaloo ndlela ukunciphisa imveliso enkulu. Yongeza ekunyuseni kwexesha lokukhokela kunye nokunciphisa amashishini afuna kakhulu i-titanium njengento ebalulekileyo. Ngokobuchwephesha, ngelixa isenza ukuba izibonelelo zayo zokusebenza zibonakale, ubukho kunye nokuveliswa kwe-titanium kucelwa umngeni yimiceli mngeni eyoyikisayo yobugcisa kunye nolingo lwezoqoqosho olubhekiselele kusetyenziso oluxhaphakileyo kumashishini angavani neendleko.
Unyino kwiiNkqubo eziZodwa
Ukusetyenziswa kwe-Titanium kuthintelwe okanye kulinganiselwe kwiimeko ezithile ngenxa yezoqoqosho, ubugcisa, kunye neemeko zokusebenza. Nantsi imiqobo emihlanu engundoqo ethintela ukusetyenziswa kwayo:
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Iindleko Zezinto Eziphezulu: Ixabiso le-Titanium liphezulu xa lithelekiswa nezinye izinto, umzekelo, i-aluminiyam okanye intsimbi. Ukukhutshwa kwe-Titanium kwi-ores yayo ngenkqubo ye-Kroll inamandla kakhulu, kwaye ukuphathwa okukhethekileyo kunye nokucubungula kongeza kwiindleko. Amaxabiso ezinto ezikrwada aqala malunga ne-25 yeedola ukuya kwi-30 yeedola ngekhilogram ngelixa i-aluminiyam iza malunga ne-2 ukuya kwi-3 yeedola ngekhilogram. - 2
Imingeni yokuVelisa kunye noMatshini: I-Titanium inzima ukwenza umatshini ngenxa ye-thermal conductivity ephantsi kunye nobunzima obuphezulu, kungoko ukunxiba izixhobo eziphezulu kunye nezantya zokucotha. Ngelixa olunye uphononongo lubanga ukuba ukwenziwa kwe-titanium kunokunciphisa ubomi besixhobo ukuya kuthi ga kwi-60 pesenti xa kuthelekiswa nomatshini wentsimbi, ngaloo ndlela kongeza iindleko ezongezelelekileyo nobunzima bokuvelisa. - 3
UkuGalling kunye nokuKhathazeka kokunxiba: Ngenxa yamandla ayo, i-titanium idla ngokuba buhlungu okanye ithande ukuhanjiswa kwezinto ngexesha lokutyibilika. Oku kuthintela i-titanium ekusetyenzisweni kuyo nayiphi na i-high-friction components, i-junior bearing, okanye i-kig, apho ezinye izinto ezifana nentsimbi okanye i-composites ngokubanzi zibeka ukusebenza okungcono kakhulu kunye nexesha. - 4
Ukusebenza okulinganiselweyo kubushushu obugqithisileyo: Nakweyiphi na imeko, i-titanium ibonisa ukumelana nobushushu obuphezulu xa kuthelekiswa ne-aluminiyam okanye intsimbi eqhelekileyo kodwa iphelelwa ngamandla kwaye ingazinzi kumaqondo obushushu angaphezu kwama-800 °F (427 °C). Ngale ndlela, i-aerospace okanye izicelo zemizi-mveliso ezifuna ukusebenza ngaphaya kwalo mda kunokuzisa umbuzo othile weemeko ezimbi kwi-titanium. - 5
Iingqwalasela zoMhlwa kwezinye iindawo: Nangona i-titanium ithandwa kakhulu ngokuxhathisa kwayo ekudlekeni, inokuhlaselwa ngokuncipha kakhulu kweemeko ezineasidi, njenge-hydrochloric acid, okanye iindawo ezityebileyo kwii-ion ze-fluoride. Ezi meko zibangela ukuwohloka okukhawulezileyo, oko kuyenza ingafaneleki ukusetyenzwa kweekhemikhali ezithile okanye usetyenziso lwaselwandle.
Ezi ngqwalasela, ke ngoko, zigxininisa ngakumbi imfuneko yobunjineli bobunjineli, amaxabiso, kunye nokukhethwa kwezinto eziphathekayo kwizicelo ezikhethekileyo ezixhomekeke kwi-titanium.
Ucaphulo
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I-Titanium kunye neeminerali zayo – Indawo yokugcina izinto kwiYunivesithi yaseMichigan exoxa ngomthamo we-titanium kunye neempawu zayo.
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Ukusasazwa kwe-titanium kwisinyithi – Uphononongo malunga neempawu zokusasazwa kwe-titanium kwisinyithi, oluqhutywa yi-ADS yaseHarvard.
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Iiminerali zentsimbi kunye netitanium kumhlaba waseHawaii - Uphando malunga netitanium kunye ne-iron oxides kumhlaba, oluvela kwiYunivesithi yaseHawaii.
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Ukuchazwa kweTitanium kunye neStainless Steel Medical Implants – Uthelekiso oluneenkcukacha lweempawu zetitanium kunye ne-stainless steel kwizicelo zonyango.
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Iimpawu zokutyhala eziguqukayo zeesinyithi – Uphononongo malunga neempawu zokutyhala zeesinyithi ezahlukeneyo, kuquka nee-alloys ze-titanium.
- Cofa apha ukuze ufunde ngakumbi.
Imibuzo ebuzwa rhoqo (FAQ)
Umbuzo: Ngaba i-titanium yomelele kunentsimbi?
A: Ngokuqinisekileyo. I-Titanium yomelele ngakumbi ukuba siqwalasela amandla okuqina. Intsimbi yintsimbi yemihla ngemihla yamandla afanelekileyo, nangona i-titanium inokuthatha imithwalo ephezulu yokuqina ngaphandle kokuqhekeka okanye ukonakala; kungoko, ithathwa njengesinyithi esingcono kwizicelo zobunjineli eziphezulu.
Umbuzo: Kutheni i-titanium ithathwa njengentsimbi eyomeleleyo xa ithelekiswa nentsimbi?
IMPENDULO: I-Titanium inokuqina okukhulu kunye namandla acinezelayo kunentsimbi kwaye inokumelana noxinzelelo phambi kokuba inikezele. Umlinganiselo wayo wokuqina wobunzima uphezulu, owenzela ukuba ulungele i-aerospace kunye namashishini omkhosi afuna izinto zokukhanya.
Q: Ukuthelekisa izakhono, zihamba njani i-titanium kunye nentsimbi?
A: I-Titanium yomelele kunezintsimbi ezininzi, ngakumbi xa kuthathelwa ingqalelo iialloyi zentsimbi zokuqina. Kodwa kuxhomekeke kubume bentsimbi, ezinye iinguqu zentsimbi zinokuba namandla aphezulu. Ke, i-titanium yaziwa ngokubanzi ngokuxhathisa umhlwa kunye nokukwazi ukugcina amandla kwizicelo zobushushu obuphezulu.
Umbuzo: Zeziphi izicelo apho amandla e-titanium abala?
A: I-Titanium ifumana indlela yayo kwimizi-mveliso ye-aerospace, yeemoto, kunye nezixhobo zonyango. Ukudityaniswa kokumelana nomhlwa kunye namandla aphezulu kuyenza ibe yimathiriyeli egqwesileyo yesakhelo koomatshini abanzima kunye namalungu kwiinjini zejethi kunye neeinjini zegesi.
Umbuzo: Ngaba i-titanium yomelele ngakumbi kunentsimbi?
IMPENDULO: Ewe, i-titanium yomelela ngakumbi kune-iron, ngakumbi kwindawo enomhlwa. Imelana ne-rust kunye ne-corrosion, ngokungafani nentsimbi, elahlekelwa yingqibelelo yayo xa ibonakaliswe kumswakama kunye nezinye izinto ezitshabalalisayo.
Umbuzo: Ngaba iialloyi ze-titanium zinokwenziwa zomelele kunealloyi zentsimbi ezihambelanayo?
A: Ngokwenene, ewe. Ingxubevange ye-Titanium inakho ukunyanga ukomelela kunealloyi zentsimbi, ngakumbi kuqwalaselwe iipropati ezikhethekileyo ezinokuthi zinikwe yi-titanium. Ezi ngxubevange zihlala zinamandla amakhulu okuqina kunye nokuxhathisa ukubola, zizibeka phezulu kwizicelo ezininzi.
Umbuzo: Amandla esivuno se-titanium athelekiswa njani nalawo entsimbi?
A: Amandla esivuno se-titanium anokodlula awe-iron, kunye nezinye i-titanium alloys zifezekisa uxinzelelo lwesivuno olungaphezulu kwe-900 MPa, ngelixa i-iron iqhelekile malunga nama-250 MPa. Amandla esivuno se-titanium, ephakame kakhulu, abonisa ukuba iya kwamkela njani imithwalo enzima kwaye ixhathise ukuguqulwa.
Umbuzo: Kutheni i-Titanium ikhethwa njengesinyithi kwizicelo ze-aerospace?
A: I-Titanium ifumana indlela yayo kwizicelo ze-aerospace ngenxa yomlinganiselo ophezulu wamandla-ukuya-kuxinaniso kunye nokumelana nomhlwa ekunikezelayo. Ke, amacandelo anokwenziwa abenzima ngoomatshini abakhoyo abahamba kwiimeko ezinzima zokusebenza ngexesha lokubhabha.
Umbuzo: Ingaba ubuninzi be-titanium buthelekiswa njani nobo bentsimbi?
IMPENDULO: Ukuba ngaphantsi koxinano kunentsimbi, i-titanium inegalelo kumlinganiselo wokomelela ukuya kubunzima. Olu phawu longeza kwiinzuzo zalo, lusetyenziswa kwiindawo apho ukuncitshiswa kobunzima sisigqibo esicacileyo: i-aerospace kunye nempahla yezemidlalo ephezulu.
Umbuzo: Kweziphi iindawo apho i-titanium ibonakalisa ukuthotywa xa ithelekiswa nentsimbi?
IMPENDULO: I-Titanium, nangona kunjalo, inengxaki yokungabikho kweendleko: kubiza kakhulu kunentsimbi ukuyithenga. Kwakhona, i-titanium inokubangela ingxaki enkulu ngexesha lomatshini kunye neemeko zonyango, ezikhawulela ezinye zezicelo zayo zokwakha. Sekunjalo, abaninzi baphikisa ukuba utyalo-mali lufanelekile, ngenxa yeenzuzo.
isiphelo
Ukuqonda amandla kunye nokusetyenziswa kwe-titanium xa kuthelekiswa ne-iron kubalulekile ekwenzeni izigqibo zobunjineli ezinolwazi. Nangona i-titanium igqwesile kumlinganiselo wamandla ukuya kubunzima kunye nokumelana nokugqwala, i-iron ihlala iyimfuneko kwizicelo ezinkulu nezingabizi kakhulu. Ukukhetha phakathi kwezi zinto ekugqibeleni kuxhomekeke kwiimfuno ezithile zeprojekthi, iimeko zokusingqongileyo, kunye nokuqwalaselwa kohlahlo-lwabiwo mali.
